UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                            A. O. Smith Corporation 
                                (Name of Issuer)

                          Common Stock, $1.00 par value
                         (Title of Class of Securities)

                                    831865209
                                 (CUSIP Number)

                 Wesley A. Ulrich c/o Smith Investment Company,
           11270 West Park Place, Milwaukee, WI  53224/(414) 359-4030
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                  (See Item 4)
             (Date of Event which Requires Filing of this Statement)


   If the filing person has previously filed a statement on Schedule 13G to
   report the acquisition which is the subject of this Schedule 13D, and is
   filing this schedule because of Rule 13d-1(b)(3) or (4), check the
   following box  [_].

   Check the following box if a fee is being paid with the statement  [_]. 
   (A fee is not required only if the reporting person:  (1) has a previous
   statement on file reporting beneficial ownership of more than five percent
   of the class of securities described in Item 1; and (2) has filed no
   amendment subsequent thereto reporting beneficial ownership of five
   percent or less of such class.)  (See Rule 13d-7.)

   Note:     Six copies of this statement, including all exhibits, should be
   filed with the Commission.  See Rule 13d-1(a) for other parties to whom
   copies are to be sent.

   *    The remainder of this cover page shall be filled out for a reporting
   person's initial filing on this form with respect to the subject class of
   securities, and for any subsequent amendment containing information which
   would alter disclosures provided in a prior cover page.

   The information required on the remainder of this cover page shall not be
   deemed to be "filed" for the purpose of Section 18 of the Securities
   Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
   that Section of the Act but shall be subject to all other provisions of
   the Act (however, see the Notes).


   
          CUSIP No. 831865209


     1   NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              Smith Investment Company  39-6043416

     2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  [_]
                                                                     (b)  [_]


     3   SEC USE ONLY


     4   SOURCE OF FUNDS*



     5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                   [_]



     6   CITIZENSHIP OR PLACE OF ORGANIZATION

              Nevada

                     7  SOLE VOTING POWER
      NUMBER OF
                             1,039,384
        SHARES

                     8  SHARED VOTING POWER
     BENEFICIALLY

                             -0-
       OWNED BY

                     9  SOLE DISPOSITIVE POWER
         EACH

                             1,039,384
      REPORTING

        PERSON
                    10  SHARED DISPOSITIVE POWER
         WITH
                             -0-


    11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              1,039,384

    12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES*                                                          [_]




    13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

              9.9%* (See Item 4)


    14   TYPE OF REPORTING PERSON*

              CO


                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

   

   Item 1.   Security and Issuer.

        Security:  Common Stock, $1.00 par value ("Stock")

        Issuer:   A. O. Smith Corporation, a Delaware corporation

        Principal Executive Office:   11270 West Park Place
                                      Milwaukee, WI  53224


   Item 2.   Identity and Background of Reporting Person.

        (a)  Name:     Smith Investment Company, a Nevada corporation

        (b)  Business Address:   11270 West Park Place
                                 Milwaukee, WI  53224

        (c)  Present principal occupation:

             The principal business of the Reporting Person is to act as an
             operating company.  It holds certain Stock and Class A Common
             Stock, $5 par value per share ("Class A Stock"), of the Issuer
             as elaborated in Item 5; operates a division, Belvedere Company,
             1 Belvedere Boulevard, Belvidere, Illinois 61008-8596, which
             manufactures beauty salon furniture and fixtures; manages Berlin
             Industries, Inc., 175 Mercedes Drive, Carol Stream, Illinois
             60188-9401, a wholly-owned subsidiary of the Reporting Person,
             which engages in commercial printing; and manages Central States
             Distribution Service, Inc., P.O. Box 682, 3401 Lynch Creek
             Drive, Danville, Illinois 61832, a wholly-owned subsidiary of
             the Reporting Person, which engages in trucking, packaging and
             public warehousing.

             The name, business address and present principal occupation or
             employment of each executive officer, director and controlling
             shareholder of the Reporting Person are set forth on Annex A.

        (d)  During the last five years, neither the Reporting Person, nor
             any of its directors or executive officers, has been convicted
             in a criminal proceeding.

        (e)  During the last five years, neither the Reporting Person, nor
             any of its directors or executive officers, has been a party to
             any civil proceeding of a judicial or administrative body as a
             result of which proceeding it was or is subject to any judgment,
             decree or final order enjoining future violations of, or
             prohibiting or mandating activities subject to, Federal or state
             securities laws or finding any violation with respect to such
             laws.

        (f)  Citizenship:   All individuals listed on Annex A are U. S.
             citizens.

   Item 3.   Source and Amount of Funds or Other Consideration.

        No purchases (and hence no funds or other consideration) are
   reflected herein.

   Item 4.   Purpose of Transaction.

        On January 19, 1998, the Issuer issued a press release (the
   "Release"), a copy of which is filed as Exhibit 1 hereto.  Pursuant to the
   Release, the Reporting Person learned that the Issuer had acquired a
   significant portion of its own shares of Stock.  As a result, the
   Reporting Person made a good faith effort to determine the current number
   of issued and outstanding shares of the Issuer's Stock and whether it
   should file an amendment to its Schedule 13D.  The Reporting Person
   determined that the Issuer's acquisition of its own Stock increased the
   percentage of Issuer's Stock beneficially owned by the Reporting Person
   from 6.9% to 9.9%, based on the number of shares outstanding as of
   December 31, 1997.  This increase was passive as the Reporting Person
   acquired no Stock of the Issuer, but, instead experienced an increase in
   beneficial ownership solely as a result of the Issuer acquiring its own
   Stock as part of an ongoing plan, on the part of the Issuer, to repurchase
   certain of its own shares of Stock.

        The Reporting Person has provided the foregoing disclosure for
   informational purposes only and does not thereby admit that the
   acquisition by the Issuer of its own stock is a "plan or proposal" of the
   Reporting Person.  The position of the Reporting Person is that such
   transactions represent the plan and proposal of the Issuer and has been
   pursued only with the approval of the Issuer's Board of Directors.

        The Reporting Person does not have any present plans or proposals
   which relate to or would result in any of the items described in
   subparagraphs (a) through (j) of Item 4, Schedule 13D, other than as
   described above.

   Item 5.   Interest in Securities of the Issuer.

        (a)-(b)  The Reporting Person beneficially owns an aggregate of
   1,039,384 shares of Stock, representing 9.9% of the Issuer's issued and
   outstanding Stock as of December 31, 1997.  The Reporting Person has sole
   voting and sole dispositive power over such shares.  As of December 31,
   1997, the Reporting Person owned 5,378,168 shares of Class A Stock, or
   approximately 92.4% of the outstanding shares of Class A Stock.  The
   Reporting Person has sole power to vote and dispose of such shares.

        Mr. Glen R. Bomberger beneficially owns an aggregate of 16,440 shares
   of Stock, representing approximately 0.2% of the Issuer's issued and
   outstanding Stock as of December 31, 1997.  Mr. Bomberger has sole voting
   and sole dispositive power over such shares.  Mr. Bomberger also holds
   options for 200,900 shares of Stock, of which 184,700 were exercisable as
   of December 31, 1997.

        Mr. Jere D. McGaffey beneficially owns an aggregate of 300 shares of
   Stock, representing approximately 0.003% of the Issuer's issued and
   outstanding Stock as of December 31, 1997.  Mr. McGaffey has sole voting
   and sole dispositive power over such shares.

        Mr. Arthur O. Smith is Chairman and Chief Executive Officer and a
   director of Smith Investment Company; during 1993, Mr. Lloyd B. Smith
   retired as Vice President and a director of Smith Investment Company.

        On December 31, 1997, Arthur O. Smith owned beneficially 118,445
   shares, and his wife owned of record and beneficially 3,485 shares of the
   outstanding capital stock of the Reporting Person and 199,130 shares were
   held in various trusts for the benefit of the wife and issue of Arthur O.
   Smith.  On December 31, 1997, Lloyd B. Smith owned beneficially 962 shares
   of the outstanding capital stock of the Reporting Person and 312,043
   shares were held in various trusts for the benefit of the wife and issue
   of Lloyd B. Smith.  In addition, Messrs. Smith were trustees of various
   trusts for the benefit of persons other than themselves, their wives and
   issue, which trusts held an aggregate of 501,910 shares of the capital
   stock of the Reporting Person outstanding on December 31, 1997.  Messrs.
   Smith have shared investment and voting power on all trusts for which they
   are co-trustees.  On all other trusts one or the other shares trust powers
   with at least one other person.  The shares of capital stock of the
   Reporting Person held beneficially by Messrs. Smith and their wives,
   together with shares held by Messrs. Smith in trust for others comprised
   68.5% of the 1,658,533 outstanding shares of capital stock of the
   Reporting Person on December 31, 1997.  Messrs. Smith disclaim that any of
   the foregoing interests in the capital stock of the Reporting Person
   constitute beneficial ownership of any Stock of A. O. Smith Corporation.

        (c)  Not applicable.

        (d)  (See Item 6)

        (e)  Not applicable.

   Item 6.   Contracts, Etc.

        The Reporting Person has pledged 1,500,000 shares of Class A Stock
   (approximately 25.8% of the outstanding shares of Class A Stock as of
   December 31, 1997) beneficially owned by it to secure a note due 2003
   issued by the Reporting Person to Aid Association for Lutherans (the
   "Pledgee").  Upon the occurrence of an event of default (including failure
   to pay principal when due), the Pledgee has the right to vote or, after
   notice, to sell the pledged shares of Class A Stock.  The Pledgee also
   has, upon the occurrence of and during the continuation of an event of
   default, the right to receive dividends on the pledged Class A Stock. 
   Further, under the agreement all of the shares of Class A Stock owned by
   the Reporting Person are subject to a negative pledge.  For further
   information reference is made to Exhibit 3, the Pledge Agreement.

   Item 7.   Exhibits.

        1.   Press Release, dated January 19, 1998, of Issuer.

        2.   Loan Agreement, dated June 15, 1993, between Smith Investment
             Company and Aid Association for Lutherans.

        3.   Pledge Agreement, dated June 30, 1993, between Smith Investment
             Company and Aid Association for Lutherans.

                                    SIGNATURE

        After reasonable inquiry and to the best of my knowledge and belief,
   I certify that the information set forth in this statement is true,
   complete and correct.

        Dated:    February 26, 1998.

                            Smith Investment Company



                            By:  /s/ Wesley A. Ulrich
                                 Wesley A. Ulrich
                                 Secretary and Treasurer


   

                                                                      Annex A

        The following table sets forth certain information about the
   executive officers and directors of Reporting Person.

                                                       Principal Occupation
            Name                   Position                or Employment   

    A. O. Smith            Chairman, Chief Executive Chief Executive
                           Officer and Director      Officer of Smith
                                                     Investment Company
    J. D. McGaffey         Director                  Attorney at Law

    A. O. Smith, III       Director                  Employee of A. O.
                                                     Smith Corporation

    B. M. Smith            President and Director    President of Smith
                                                     Investment Company
    G. R. Bomberger        Vice President and        Executive Vice
                           Director                  President and Chief
                                                     Financial Officer of
                                                     A. O. Smith
                                                     Corporation

    W. A. Ulrich           Secretary and Treasurer   Secretary and
                                                     Treasurer of Smith
                                                     Investment Company   
    H. M. Stratton, II     Director                  President and Chief
                                                     Executive Officer of
                                                     STRATTEC Security
                                                     Corporation

    L. B. Smith            Retired                   Retired

        The business address of each person listed above, other than Jere D.
   McGaffey and Harold M. Stratton, II, and Arthur O. Smith, III is 11270
   West Park Place, Milwaukee, Wisconsin 53224.  Mr. McGaffey's business
   address is Foley & Lardner, 777 E. Wisconsin Avenue, Milwaukee, Wisconsin
   53202.  Mr. Stratton's business address is STRATTEC Security Corporation,
   3333 West Good Hope Road, Milwaukee, Wisconsin 53209.  Mr. Smith's
   business address is A. O. Smith Corporation, 531 North 4th Street, Tipp
   City, Ohio 45371.

        Messrs. Arthur O. Smith and Lloyd B. Smith may be deemed to be
   controlling shareholders of the Reporting Person.



                                                        A O SMITH CORPORATION

   For Release:   IMMEDIATE
                  January 19, 1998

   Contact:       Edward J. O'Connor
                  Vice President-Human Resources & Public Affairs
                  P.O. Box 23974
                  Milwaukee, WI  53223-0974
                  (414) 359-4100

   A. O. Smith 1997 earnings increase 68% to $2.00 per share
   Fourth quarter earnings doubled, to $.56 per share

        Milwaukee, Wis.---A. O. Smith Corporation (AOS-NYSE) today announced
   1997 earnings increased 49 percent to $37.6 million, compared with 1996
   earnings of $25.2 million.

        Earnings per share of $2.00 (diluted) were 68 percent higher than the
   $1.19 per share earned in 1996, underscoring the additional benefit of the
   company's share repurchase program.  Sales of $833 million were $52
   million higher than 1996 sales of $781 million.

        For the fourth quarter, earnings from continuing operations were $9.7
   million or $.56 per share (diluted), significantly higher than the $6.0
   million or $.28 per share earned during the same period in 1996.  Sales of
   $206 million represented a seven percent increase over fourth quarter 1996
   sales of $192 million.

        During the fourth quarter, the company completed the sale of its
   Mexican automotive affiliate, Metalsa, bringing the divesture of its
   automotive operations to a conclusion.

        "The company was able to achieve its earnings objectives despite
   recurring challenges in several of our major markets," Robert J. O'Toole,
   chairman and chief executive officer, observed.  "The acquisition of
   UPPCO, reductions in general and administrative expense and higher
   interest income contributed to the significant improvement in earnings."

        Sales in the Electric Motor Technologies platform increased nearly 16
   percent to a record $391 million.  The March 31 acquisition of UPPCO, a
   manufacturer of subfractional horsepower electric motors, added
   approximately $57 million to 1997 sales.  The company was able to overcome
   a nearly 10 percent decline in the domestic air conditioning industry,
   with sales of fractional horsepower and hermetic motors approximately the
   same as in the prior year.  Operating profits were moderately higher than
   1996 due to contributions from the UPPCO acquisition.

        Water Systems Technologies' sales of $287 million were slightly lower
   than 1996 sales of $291 million.  Higher sales of commercial water heaters
   and boilers were offset by second-half weakness in the residential water
   heater market.  1997 marked the sixth consecutive year that A. O. Smith
   has increased its sales in the important commercial water heating market
   segment.  Profits were essentially unchanged compared with 1996.

        Sales of the Storage and Fluid Handling Technologies platform of $155
   million were slightly higher than 1996 sales of $153 million.  Improved
   performance by the Smith Fiberglass unit was partially offset by lower
   sales of liquid storage tanks.  Operating profits were essentially flat in
   1997.

        The company also announced that its Board of Directors approved an
   authorization to repurchase an additional $50 million of its Common Stock
   and Class A Common Stock.  The company reported that it has nearly
   completed the previous authorization to repurchase $80 million of common
   stock granted on June 10, 1997.  Since the inception of the program in
   January of last year, the company has repurchased approximately 4.9
   million shares for $181 million, representing 23 percent of the total
   shares outstanding.  As of January 19, 1998, there were 16.2 million
   shares of Common Stock and Class A Common Stock issued and outstanding.

        The Board of Directors also today declared a regular quarterly cash
   dividend of $.17 per share on Common Stock and Class A Common Stock.  The
   dividend is payable February 17 to shareholders of record January 31,
   1998.

        A. O. Smith Corporation is a diversified manufacturer with
   headquarters in Milwaukee, Wis.  Its major product lines include
   fractional horsepower, subfractional horsepower, and hermetic electric
   motors; residential and commercial water heaters; industrial storage
   tanks; and fiberglass reinforced plastic pipe.

   

   
A.O. SMITH CORPORATION AND SUBSIDIARIES (condensed consolidated financial statements - $000 omitted except per share data) Statement of Earnings Three Months ended Year ended December 31 December 31 Continuing 1997 1996 1997 1996 Sales Electric Motor Technologies $ 91,970 $ 73,094 $390,749 $337,138 Water Systems Technologies 76,240 79,943 287,458 291 281 Storage & Fluid Handling Technologies 37,577 38,777 154,730 152,774 ------- ------- ------- ------- Net Sales 205,787 191,814 832,937 781,193 Costs and Expenses Cost of Products Sold 165,421 150,546 662,227 614,218 Selling, General and Administrative 24,748 25,734 106,999 107,350 Interest Expense 1,160 2,231 7,762 8,114 Interest Income (2,665) (153) (9,035) (341) Other Expense 1,243 2,192 3,328 5,629 Tax Provision 5,356 3,848 21,359 17,080 ------- ------- ------- ------- Total Costs and Expenses 195,263 184,398 792,640 752,050 Earnings Before Equity in Loss of Joint Ventures 10,524 7,416 40,297 29,143 Equity in Loss of Joint Ventures (779) (1,385) (2,744) (3,894) ------- ------- ------- ------- Earnings from Continuing Operations 9,745 6,031 37,553 25,249 Discontinued Earnings from Operations (less related income tax (1997-$0 & $7,698; 1996-$4,880 & $19,988)) - 10,778 15,231 40,168 Gain on Disposition (less related income tax of $13,482 & $71,538) 6,430 - 101,046 - ------- ------- ------- ------- Net Earnings $ 16,175 $ 16,809 $ 153,830 $ 65,417 ======= ======= ======= ======= Basic Earnings Per Share of Common Stock Continuing Operations $ 0.58 $ 0.29 $ 2.04 $ 1.21 Discontinued Operations $ 0.38 $ 0.51 $ 6.31 $ 1.92 ------ ------ ------ ------ Net Earnings $ 0.96 $ 0.80 $ 8.35 $ 3.13 ====== ====== ====== ====== Average Common Shares Outstanding 16,880,268 20,929,264 18,422,871 20,922,195 Diluted Earnings Per Share of Common Stock Continuing Operations $ 0.56 $ 0.28 $ 2.00 $ 1.19 Discontinued Operations $ 0.37 $ 0.51 $ 6.19 $ 1.90 ------ ------ ------ ------ Net Earnings $ 0.93 $ 0.79 $ 8.19 $ 3.09 ========= ========== ========== ========== Average Common Shares Outstanding 17,278,684 21,200,534 18,794,190 21,156,193
A.O. SMITH CORPORATION Balance Sheet December 31, December 31, 1997 1996 ASSETS: Cash and cash equivalents $145,896 $ 6,405 Receivables 126,232 121,571 Inventories 79,049 80,445 Deferred income taxes 11,849 12,416 Other current assets 2,702 4,537 -------- -------- Total Current Assets 365,728 225,374 Net property, plant and equipment 207,756 182,600 Investments in and advances to joint ventures 25,605 14,579 Prepaid pension asset 37,468 46,628 Goodwill 51,783 6,540 Other assets 28,176 37,777 Net long-term assets - discontinued operations - 357,654 ------- ------- Total Assets $716,516 $871,152 ======= ======= LIABILITIES AND STOCKHOLDERS' EQUITY Trade payables $ 61,299 $ 66,514 Accrued payroll and benefits 26,397 27,362 Product warranty 7,972 7,563 Income taxes 6,607 1,351 Long-term debt due within one year 5,590 11,932 Other current liabilities 13,556 7,228 Net current liabilities - discontinued operations 6,461 2,602 -------- -------- Total Current Liabilities 127,882 124,552 Long-term debt 100,972 238,446 Product warranty 18,349 17,109 Other liabilities 24,410 18,135 Deferred income taxes 28,442 31,271 Postretirement benefit obligation 16,756 17,000 Stockholders' equity 399,705 424,639 ------- ------- Total Liabilities and Stockholders' Equity $716,516 $871,152 ======= ======= A.O. SMITH CORPORATION Statement of Cash Flows Year Ended December 31 1997 1996 Operating Activities Continuing Net earnings $ 37,553 $ 25,249 Adjustments to reconcile net earnings to net cash provided by operating activities: Depreciation & amortization 26,286 23,601 Deferred income taxes (2,262) (3,345) Equity in loss of joint ventures 2,744 3,894 Net change in current assets and liabilities 10,797 24,320 Net change in noncurrent assets and liabilities 3,635 4,083 Other 1,495 2,630 -------- -------- Cash Provided by Operating Activities 80,248 80,432 -------- -------- Investing Activities Capital expenditures (44,886) (37,804) Capitalized purchased software costs (1,295) (2,567) Investment in joint ventures (13,719) (15,147) Acquisition of business (net of cash acquired) (60,918) (1,111) -------- -------- Cash Used by Investing Activities (120,818) (56,629) -------- -------- Cash Flow Provided/(Used) by Continuing Operations before Financing Activities (40,570) 23,803 Discontinued Cash provided/(used) by operating activities (106,132) 113,644 Cash used by investing activities (52,456) (177,116) Proceeds from disposition 773,090 - Tax payments associated with disposition (106,039) - ------- -------- Cash Flow Provided/(Used) by Discontinued Operations before Financing Activities 508,463 (63,472) Financing Activities Long-term debt incurred - 58,507 Long-term debt retired (143,816) (4,000) Purchase of common stock held in treasury (176,550) - Proceeds from common stock options exercised 3,757 539 Tax benefit from exercise of stock options 884 28 Dividends paid (12,677) (13,807) -------- -------- Cash Provided/(Used) by Financing Activities (328,402) 41,267 -------- -------- Net increase in cash and cash equivalents 139,491 1,598 Cash and cash equivalents - beginning period 6,405 4,807 ------- ------- Cash and Cash Equivalents - End of Period $145,896 $ 6,405 ======= =======


                          AID ASSOCIATION FOR LUTHERANS

                            SMITH INVESTMENT COMPANY

                               $20,000,000 - 6.95%

                                  June 15, 1993


   

                            SMITH INVESTMENT COMPANY
                                 P.O. Box 23976
                           Milwaukee, Wisconsin 53223


                                                                June 15, 1993



   Aid Association for Lutherans
   4321 North Ballard Road
   Appleton, Wisconsin 54919

   Attention:  Investment Department

   Gentlemen:

        The undersigned, Smith Investment Company, a Delaware corporation
   (herein called the "Company"), agrees with you as follows:

        1.   Authorization of Issue of Note.  The Company will authorize the
   issue of its promissory note (herein, together with any notes which may be
   issued hereunder in substitution therefor, called the "Note" or "Notes")
   in the aggregate principal amount of TWENTY MILLION and No/100 DOLLARS
   ($20,000,000.00) to be dated the Closing Date as hereinafter defined, to
   mature June 30, 2003, to bear interest on the unpaid balance thereof from
   the date thereof until the principal thereof shall become due and payable
   at the rate of 6.95% per annum, payable quarterly, and to be substantially
   in the form of Exhibit A hereto attached.

        2.   Sale and Purchase of Note.  The Company hereby agrees to sell
   to you, and subject to the terms and conditions herein set forth, you
   agree to purchase from the Company, a Note in the aggregate principal
   amount of TWENTY MILLION and No/100 DOLLARS ($20,000,000.00) at 100% of
   such principal amount.  The closing of such sale and purchase (herein
   referred to as the "Closing") shall take place at the offices of Whyte &
   Hirschboeck S.C., 111 East Wisconsin Avenue, Suite 2100, Milwaukee,
   Wisconsin on June 30, 1993,  or at such other time and place as may be
   agreed to by you and the Company (herein referred to as the "Closing
   Date").  At the Closing the Company will deliver to you the Note, payable
   to you or your order, against payment of the purchase price thereof in
   federal or other immediately available funds in Chicago, Illinois.  If at
   the Closing the conditions precedent thereto shall not have been
   satisfied, you shall, at your option, be relieved of all further
   obligations hereunder.

        3.   Conditions.  Your obligation to purchase and pay for the Note is
   subject to the satisfaction on or before the Closing Date of the following
   conditions: 

        3A.  Pledge Aqreement.  The Pledge Agreement in the form of Exhibit B
   hereto attached (the "Pledge Agreement") shall have been duly authorized,
   executed and delivered by the Company, no default shall exist thereunder,
   you shall have received a fully executed copy thereof, and you or your
   agent shall have received A. O. Smith Corporation stock as provided in
   paragraph 9 hereof.

        3B.  Opinion of Special Counsel.  You shall have received on the
   Closing Date from Whyte & Hirschboeck S.C., who are acting as special
   counsel for you in connection with this transaction, a favorable opinion
   satisfactory to you as to:

             (i)  the due organization, existence and good standing of the
        Company under the laws of the State of Delaware;

             (ii)  the due authorization (including any consent of
        stockholders required by law, by the charter or by-laws of the
        Company or otherwise), execution and delivery and the validity and
        enforceability of this Agreement and the Note, and the due
        authorization (including any consent of stockholders required by law,
        by the charter or by-laws of the Company or otherwise), execution and
        delivery and the validity and enforceability (assuming delivery of
        the stock described therein) of the Pledge Agreement;

             (iii)  the exemption of the issuance and delivery of the Note
        from the registration provisions of the Securities Act of 1933, as
        amended; and

             (iv)  such other matters incident to the matters herein
        contemplated as you may reasonably request, including the form of all
        papers and the validity of all proceedings.

        3C.  Opinion of Company Counsel.  You shall have received on the
   Closing Date from Messrs. Foley & Lardner, counsel for the Company, a
   favorable opinion satisfactory to you and your special counsel as to the
   matters specified in paragraph 3B and to the effect:

             (i)  that each Subsidiary of the Company is duly organized and
        in good standing under the laws of its state or jurisdiction of
        incorporation;

             (ii)  that the Company and each Subsidiary has the
        corporate power to carry on its business as now being conducted;

             (iii)  that the Company and each Subsidiary is duly
        qualified as a foreign corporation to transact business and is
        in good standing in any jurisdiction where the nature of its
        business transacted makes such qualification necessary and where
        the failure to be so qualified would have a material, adverse
        effect upon their business, financial or otherwise, taken as a
        whole;

             (iv)  that, in connection with the issuance and delivery of the
        Note under the circumstances contemplated by this Agreement, it is
        exempt from the necessity of qualifying an indenture with respect to
        the Note under the Trust Indenture Act of 1939, as amended;

             (v) that there is no action, suit or proceeding pending or, to
        the best of their knowledge, threatened against or affecting the
        Company or any Subsidiary before or by any court, governmental
        authority or arbitrator which, if adversely decided, might result,
        either individually or collectively, in any material adverse change
        in the business, properties, operations or condition, financial or
        otherwise, of the Company or the applicable Subsidiary except for a
        threatened claim by Michael J. Spitz against Berlin Industries, Inc.
        involving forfeitable benefits under a long term incentive plan,
        payments under which would total approximately $1,200,000 (if the
        claimant is successful) but which would not (except for payments
        aggregating approximately $140,000) commence prior to the maturity of
        the Note in 2003;

             (vi)  that neither the Company nor any Subsidiary is bound by
        any agreement or instrument of which they have knowledge, or subject
        to any charter or corporate restriction, which to their knowledge
        materially and adversely affects the business, properties, operations
        or condition, financial or otherwise, of the Company or the
        applicable Subsidiary;

             (vii)  that neither the authorization, execution and delivery
        of this Agreement, the Note, and the Pledge Agreement nor the
        consummation of the transactions therein contemplated, nor the
        fulfillment or compliance with the terms thereof will conflict with
        or result in a breach of any terms of the charter, by-laws or any
        other corporate restriction or of any statute, law, rule or
        regulation, or of any judgment, decree, writ, injunction, order or
        award of any arbitrator, court or governmental authority or of any
        instrument of which they have knowledge, which is applicable to the
        Company or any Subsidiary or by which the Company or any Subsidiary
        is bound, or constitute a default thereunder;

             (viii)  that neither the Company nor any Subsidiary is (a)  a
        "public utility company" or a "holding company," or an "affiliate" or
        a "subsidiary company" of a "holding company," as such terms are
        defined in the Public Utility Holding Company Act of 1935, as
        amended, or (b)  a "public utility" as defined in the Federal Power
        Act, as amended, or (c)  an "investment company" or an "affiliated
        person" thereof or an "affiliated person" of any such "affiliated
        person" as such terms are defined in the Investment Company Act of
        1940, as amended;

             (ix)  that the Company owns all of the stock of A. O. Smith
        Corporation, a Delaware corporation ("A. O. Smith Corporation"),
        described in Exhibit D beneficially and of record, free and clear of
        any liens, encumbrances, charges of any kind or claims or rights of
        any third parties whatsoever, excepting as set forth in the existing
        loan documentation by and between you and the Company dated as of
        July 13, 1988;

             (x)  that upon delivery of the stock described in the Pledge
        Agreement, the Pledge Agreement will create a first lien security
        interest in your favor in all right, title and interest of the
        Company in and to such stock; and

             (xi)  that, with respect to you and the Company, the
        issuance of the Note and the use by the Company of the proceeds
        therefrom does not violate or conflict with Section 7 of the
        Securities Exchange Act of 1934, as amended, or Regulations G,
        T, U or X of the Board of Governors of the Federal Reserve
        System (12 CFR Parts 207, 220, 221 and 224, respectively).

   For purposes of this paragraph 3C, Subsidiaries do not include the Foreign
   Subsidiaries.

        3D.  Additional Financial Information.  If not previously furnished,
   the Company shall furnish you with the same financial statements as
   are set forth in paragraph 7A(i), as at March 31, 1993.  The same
   representations and warranties applicable to the financial statements
   referred to in paragraph 5B shall be applicable to the financial
   statements furnished pursuant to this paragraph 3D. 

        3E.  Officer's Certificate.  The representations and warranties of
   the Company contained in paragraph 5 shall be true as of the Closing
   Date, except to the extent of changes caused by the transaction herein
   contemplated and dividends paid consistent with the provisions hereof;
   there shall exist on such date no Event of Default or Default; and the
   Company shall deliver to you an Officer's Certificate dated the Closing
   Date to both such effects.

        3F.  Tax Certificate.  The Company shall have delivered to you a
   certificate of the principal financial officer of the Company stating that
   such person has reviewed the federal income tax returns of the Company for
   the fiscal years ended December 31, 1986 through 1991, inclusive (and for
   the fiscal year ended December 31, 1992, if such tax returns have been
   completed prior to the Closing Date), and in the opinion of such person
   the Company has paid, or made adequate provision for the payment of, all
   federal income taxes for said fiscal years.

        3G.  Proceedings and Documents.  All corporate and other proceedings
   in connection with the transactions contemplated hereby and all documents
   incident thereto shall be satisfactory in substance and form to you and
   your special counsel, and you and your special counsel shall have received
   all such counterpart originals or certified or other copies of such
   documents as you or they may request.

        4.   Prepayments.  The Note shall be subject to prepayment with
   respect to the required prepayments specified in paragraph 4A and also
   under one or more of the circumstances set forth in the succeeding
   paragraphs.

        4A.  Mandatory Prepayments.  On June 30, 1996 and on June 30 of each
   succeeding year, the Company shall apply to the prepayment of the Note,
   without premium, $2,500,000 and such principal amount of the Note,
   together with interest thereon to the prepayment dates, shall become due
   and payable on such prepayment dates.  The remaining principal amount of
   the Note, together with interest thereon, shall become due and payable on
   June 30, 2003.  The Company's exercise of any prepayment option contained
   in this Agreement shall not reduce or otherwise affect its obligation to
   make any prepayment required by this paragraph 4A.

        4B.  Optional Prepayments on Mandatory Prepayment Dates.  The Note
   may be prepaid without premium, at the Company's option, on any date on
   which a prepayment is required by paragraph 4A in multiples of $20,000,
   provided that the optional prepayments permitted by this paragraph 4B
   shall not, in the aggregate, exceed $2,500,000 and shall be applied to the
   amounts due under the Note in the inverse order of their maturity.

        4C.  Optional Prepayment in Whole without Premium.  The Note may be
   prepaid without premium under the circumstances and as provided in
   paragraph 6C and in paragraph 9E.

        4D.  Optional Prepayment in Whole with Premium.  Except for the
   mandatory prepayments and the optional prepayments provided in paragraphs
   4A, 4B and 4C respectively, the Note shall not be subject to prepayment,
   except that the Note may be prepaid at the Company's option, in whole (but
   not in part) at any time (but upon notice as provided in paragraph 4E),
   such prepayment to be equal to the unpaid principal amount of the Note,
   plus accrued interest, and plus a Special Premium, which Special Premium
   shall be determined by calculating the present value of all remaining
   payments of interest and principal using a rate of interest equal to the
   Applicable Treasury Rate and deducting therefrom the outstanding principal
   balance of the Notes (provided that no Special Premium shall be payable if
   such is less than or equal to zero).  The Applicable Treasury Rate shall
   mean the yield on the U.S. Treasury Note whose maturity most-closely
   coincides with the remaining average life of the Notes plus 25 basis
   points.

        4E.  Notice of Prepayment.  The Company shall give you written
   notice of each prepayment, other than prepayments pursuant to paragraphs
   4A and 4C, not less than 30 days prior to the prepayment date, setting
   forth the principal amount to be prepaid on such date and the paragraph
   pursuant to which such prepayment is being made, whereupon the principal
   amount specified in such notice together with the interest thereon to the
   prepayment date, shall become due and payable on the prepayment date.

        5.   Representations and Warranties.  The Company represents and
   warrants that:

        5A.  Organization of the Company and Subsidiaries.  The Company is
   a corporation duly organized, validly existing and in good standing 
   under the laws of the State of Delaware. It has only those Subsidiaries 
   set forth on Exhibit C.  The Subsidiaries (other than the Foreign
   Subsidiaries) are corporations duly organized, validly existing and in
   good standing under the laws of the states set forth on Exhibit C, and
   as to the Foreign Subsidiaries, the Company believes such Foreign
   Subsidiaries are corporations duly organized, validly existing and in good
   standing under the laws of the other jurisdictions set forth on Exhibit C. 
   All of the other information set forth on said Exhibit C is true and
   correct.  The execution, delivery and performance by the Company of this
   Agreement, the Note and the Pledge Agreement herein provided for are
   within its corporate authority and have been duly authorized by proper
   corporate proceedings and will not contravene any provision of law or
   regulation, or of the Company's charter or by-laws or of any agreement,
   judgment or order binding on it.  This Agreement constitutes, and the Note
   and Pledge Agreement, when executed and delivered by the Company will
   constitute, valid and binding obligations of the Company enforceable in
   accordance with their respective terms.

        5B.  Financial Statements; Fiscal Year.  The Company has furnished
   you with the following audited financial statements of the Company and its
   Subsidiaries: statement of operations and retained earnings and statement
   of changes in financial position or cash flows for the years ended
   December 31, 1986 through 1988, and balance sheets at December 31, 1986
   through 1988, all audited by Arthur Young & Company, together with the
   unqualified opinion of such accountants to the effect that such statements
   fairly present the financial condition and the results of operations of
   the Company and its Subsidiaries for the periods and as of the relevant
   dates thereof, in accordance with generally accepted accounting principles
   (except as provided in paragraph 11P hereof), and for the years ended
   December 31, 1989 through December 31, 1992, all audited by Ernst & Young,
   together with the unqualified opinion of such accountants to the effect
   that such statements fairly present the financial condition and the
   results of operations of the Company and its Subsidiaries for the periods
   and as of the relevant dates thereof, in accordance with generally
   accepted accounting principles (except as provided in paragraph 11P
   hereof).  Such financial statements are true and correct and have been
   prepared in accordance with generally accepted accounting principles
   consistently applied throughout the periods involved (except as provided
   in paragraph 11P hereof).  The balance sheets fairly present the financial
   condition of the Company and its Subsidiaries as at the dates thereof, and
   the statement of operations and retained earnings and the statement of
   changes in financial position or cash flows fairly present the results of
   the operations and changes in financial position or cash flows of the
   Company and its Subsidiaries for the periods indicated.  There has been no
   material adverse change in the condition, financial or otherwise, of the
   Company and its Subsidiaries, taken as a whole, and no dividends have been
   authorized or paid, since December 31, 1992 except a dividend of 254 per
   share payable March 1, 1993, and a dividend of 254 per share payable June
   1, 1993.  The fiscal years of the Company and its Subsidiaries end
   December 31.

        5C.  Foreign Subsidiaries: Stockholders' Equity.  The combined total
   stockholders' equity of the Foreign Subsidiaries does not, as of December
   31, 1992, exceed $350,000.

        5D.  Central States Distribution Service, Inc. Intangibles.  The
   total unamortized intangibles resulting from the acquisition of Central
   States Distribution Service, Inc. do not exceed, as of the date hereof,
   $1,000,000.

        5E.  Actions Pending; Compliance with Law.  There is no action or
   proceeding pending or, to the knowledge of the Company, threatened against
   the Company or any Subsidiary before any court or governmental or
   administrative authority which might result in any material adverse change
   in the business or condition of the Company or such Subsidiary except for
   a threatened claim by Michael J. Spitz against Berlin Industries, Inc.
   involving forfeitable benefits under a long term incentive plan, payments
   under which would total approximately $1,200,000 (if the claimant is
   successful) but which would not (except for payments aggregating
   approximately $140,000) commence prior to the maturity of the Note in
   2003, and to the best knowledge of the Company, the Company and its
   Subsidiaries have complied with all applicable laws and requirements of
   governmental and administrative authorities, the noncompliance with which
   would have a material adverse effect on the condition, financial or
   otherwise, of the Company and such Subsidiaries, taken as a whole.

        5F.  Outstanding Debt.  The Company and its Subsidiaries have no
   outstanding Debt, except as permitted by paragraph 6D.  There exists no
   material default under the provisions of any instrument evidencing any
   indebtedness or any agreement relating thereto.

        5G   Qualification; Corporate Authority; Title to Property and A. O.
   Smith Corporation Stock.  The Company and each of its Subsidiaries has
   duly qualified and is authorized to do business and is in good standing as
   a foreign corporation in each jurisdiction where property owned by it or
   the nature of its activities makes such qualification necessary and where
   the failure to be so qualified would have a material, adverse effect upon
   their business, financial or otherwise, taken as a whole. The Company and
   each of its Subsidiaries has all requisite power and authority and all
   necessary trademarks, tradenames, copyrights, patents, licenses and
   permits to carry on its business as now conducted, and has good and
   marketable title to its properties and assets, including the properties
   and assets reflected in the financial statements described in paragraph 5B
   and those shares of A. O. Smith Corporation stock as set forth on Exhibit
   D, subject to no material liens or encumbrances excepting only that
   certain properties and assets (other than those shares of A. O. Smith
   Corporation stock as set forth on Exhibit D) may be subject to liens and
   encumbrances securing Current and Funded Debt.  The Company and each of
   its Subsidiaries enjoys peaceful and undisturbed possession under all
   leases necessary in any material respect for the operation of its
   properties and assets, none of which contains any unusual or burdensome
   provisions which might materially affect or impair the operation of such
   properties and assets.  All such leases are valid and subsisting and are
   in full force and effect.

        5H.  Taxes.  The Company and its Subsidiaries have filed all federal
   and state income tax returns which, to the knowledge of the officers of
   the Company, are required to be filed, and have paid all taxes as shown on
   said returns and on all assessments received by them to the extent that
   such taxes have become due. There is no unpaid assessment for Federal
   income tax liability of the Company or any Subsidiary for any period, and
   the Company knows of no basis for any claim for such liability.  The
   Company believes that the provisions in the accounts of the Company and
   its Subsidiaries for any additional income tax liability are adequate. 
   The United States income tax liabilities of the Company have been finally
   determined by the Internal Revenue Service and satisfied for all taxable
   years up to and including the taxable year ended December 31, 1987. 

        5I.  Conflicting Agreements and Charter Provisions.  Neither the
   Company nor any of its Subsidiaries is a party to any contract or
   agreement or subject to any charter or other corporate restriction which
   materially and adversely affects its business, property or assets, or
   financial condition.  Neither the execution and delivery of this
   Agreement, the Note or the Pledge Agreement, nor fulfillment of nor
   compliance with the terms and provisions hereof and of the Note and of the
   Pledge Agreement will conflict with, or result in a breach of the terms,
   conditions or provisions of, or constitute a default under, or result in
   the creation of any lien upon any of the properties or assets of the
   Company or any Subsidiary pursuant to, the charter or by-laws of the
   Company or any Subsidiary, any award of any arbitrator or any agreement
   (including any agreement with stockholders), instrument, order, judgment,
   decree, statute, law, rule or regulation to which the Company or any
   Subsidiary is subject.  Except as set forth on Exhibit E, neither the
   Company nor any Subsidiary is a party to, or otherwise subject to any
   provisions contained in, any instrument evidencing indebtedness of the
   Company or such Subsidiary, any agreement relating thereto or any other
   contract or agreement (including its charter) which restricts or otherwise
   limits the incurring of Funded Debt by the Company of the kind to be
   evidenced by the Note. 

        5J.  Governmental Consent.  Neither the nature of the Company or of
   any Subsidiary, nor any of their respective businesses or properties, nor
   any relationship between the Company or any Subsidiary and any other
   Person, nor any circumstance in connection with the offer, issue, sale or
   delivery of the Note is such as to require the Company or any Subsidiary
   to obtain any consent or approval or take any other action or give any
   notice to or make any filing with any court or administrative or
   governmental body (other than routine filings after the date of closing
   with the Securities and Exchange Commission and/or State Blue Sky
   authorities) in connection with the execution and delivery of this
   Agreement, the offer, issue, sale or delivery of the Note or fulfillment
   of or compliance with the terms and provisions hereof or of the Note.

        5K.  Federal Reserve Regulations.  The Company does own a "margin
   security," as defined in Regulation G of the Board of Governors of the
   Federal Reserve System (12 CFR Part 207); provided, however, the Company
   will not use any proceeds from the sale of the Notes to purchase or carry
   any "security," as defined in Section 3(a)(10) of the Securities Exchange
   Act of 1934, if such transaction would constitute a "purpose credit"
   within the meaning of said Regulation G, or for any other purpose which
   would constitute any transaction contemplated by this Agreement a "purpose
   credit" within the meaning of said Regulation G, or which would involve a
   violation of Section 7 of the Securities Exchange Act of 1934, or
   Regulation T, U, or X of said Board of Governors (12 CFR Parts 220, 221
   and 224, respectively).

        5L.  Offering of Notes.  Neither the Company nor any agent acting on
   its behalf has offered the Note or any similar obligation of the Company
   for sale to, or solicited any offers to buy the Note or any similar
   obligations of the Company from, any Person which would subject the
   issuance of the Note to the provisions of Section 5 of the Federal
   Securities Act of 1933, as amended, and neither the Company nor any agent
   acting on its behalf will take any action which would subject the issuance
   or sale of the Note to the provisions of Section 5 of the Federal
   Securities Act of 1933, as amended, or to the comparable provisions of any
   securities or Blue Sky law of any applicable jurisdiction.

        5M.  Laws and Regulations.  The Company is and each Subsidiary is in
   substantial compliance with all laws and regulations, including, without
   limitation, laws and regulations relating to pollution and environmental
   control, persons with disabilities, equal employment opportunity and
   employee safety, in all jurisdictions in which it is presently doing
   business, where the failure to be in compliance would, in the aggregate,
   materially and adversely affect the business, condition or operations
   (financial or otherwise) of the Company and the Subsidiaries taken as a
   whole.  The Company will use its best efforts to comply substantially and
   to cause each Subsidiary to comply substantially with all such laws and
   regulations which may be legally imposed in the future in jurisdictions in
   which the Company or such Subsidiary may then be doing business.

        5N.  ERISA.  The Company is not deficient as to any minimum funding
   requirements under the Employee Retirement Income Security Act of 1974,as
   amended ("ERISA") with respect to any employee benefit plan (within the
   meaning of ERISA Section 3(3)) established or maintained by the Company. 
   The Company has not incurred any liability to the Pension Benefit Guaranty
   Corporation ("PBGC"), or to any trustee appointed pursuant to ERISA
   Sections 4042 or 4049, with respect to any such employee benefit plan, and
   the PBGC has not instituted proceedings to terminate any such employee
   benefit plan or to have a trustee appointed under ERISA Section 4042 to
   administer or terminate any such employee benefit plan.  The Company has
   not engaged in any "prohibited transaction," as such term is defined in
   ERISA Section 406 and Section 4975 of the Internal Revenue Code, which may
   result in any civil penalty assessed pursuant to ERISA Section 502(i) or a
   tax imposed by the Internal Revenue Code. The Company maintains no
   unfunded employee welfare benefit plans (within the meaning of ERISA
   Section 3(l)) for former employees of the Company which cannot be
   terminated without further obligation on the part of the Company within
   not more than thirty (30) days excepting a plan providing certain
   supplemental medical benefits to Medicare for approximately 50 former
   employees costing approximately $37,000 in 1991 and $48,000 in 1992.  The
   term "Company" as used herein includes all corporations which are members
   of a controlled group of corporations within the meaning of I.R.C. Section
   1563(a).

        5O.  There is no 5O.

        5P.  Undisclosed Statements.  Neither this Agreement, nor any
   document, certificate or statement referred to herein contains any untrue
   statement of a material fact or omits to state a material fact necessary
   to be stated in order to make the statements contained herein and therein
   not misleading.  There is no fact not generally known to the business or
   financial community which the Company has not disclosed to you in writing
   which materially affects adversely or, so far as the Company can
   reasonably now foresee, will materially affect adversely the properties,
   business, prospects, profits or condition (financial or otherwise) of the
   Company and its Subsidiaries, taken as a whole, or the ability of the
   Company to perform this Agreement.

        5Q.  Use of Proceeds.  The proceeds of the sale of the Note will be
   used by the Company to pay in full, without premium or penalty, all
   amounts due on the 9.4% Notes heretofore sold to you and scheduled to
   mature no later than June 30, 1995 (which amounts total $10,235,000 as of
   June 30, 1993), to pay in full all amounts due on the short term bank debt
   incurred to pay the balance due on the Company's acquisition of the
   remaining 20% minority interest in Berlin Industries, Inc., and the
   balance, if any, for general corporate purposes, and will not be used for
   any purpose prohibited by law.

        6.   Negative Covenants.  The Company agrees that, so long as any of
   the Note or Notes shall be outstanding:

        6A.  Dividends and Other Restricted Payments.  The Company will not
   at any time after the date hereof pay or declare any dividend on any class
   of its stock or make any other distribuion on account of any class of its
   stock or purchase or otherwise acquire, directly or indirectly, any shares
   of stock of A. O. Smith Corporation (all of the forgoing being herein call
   "Restricted Payments") except out of Consolidated Net Income Available for
   Restricted Payments.  "Consolidated Net Income Available for Restricted
   Payments" shall mean an amount equal to $3,000,000 plus 75% of "Adjusted
   Net Income" for the period (taken as one accounting period) commencing on
   January 1, 1993, and terminating at the end of the last fiscal quarter
   preceding the date of any proposed Restricted Payment less the sum of the
   aggregate amount of all Restricted Payments made by the Company on or
   after Janaury 1, 1993.  "Adjusted Net Income" shall mean the Consolidated
   Net Income of the Company reduced by its equity in the net income (or
   increased by its equity in any net loss) of  A. O. Smith Corporation, and
   increased by (i)  all dividends received from A. O. Smith Corporation, and
   (ii)  by any amortization of goodwill and covenants not to compete not
   exceeding $1,650,000 per annum from January 1, 1993, through and including
   December 31, 1996, $1,504,000 for 1997, and nothing thereafter, arising
   from the acquisition of Berlin Industries, Inc., all to the extent
   reflected on the financial statements delivered to you pursuant to
   paragraphs 7A(i) and (ii) hereof. There shall not be included in any
   computation of Restricted Payments or of Consolidated Net Income Available
   for Restricted Payments:  (y) dividends payable in stock of the Company,
   and (z) exchange of stock of one or more classes of the Company for other
   stock of the Company, except to the extent that cash or other property is
   involved in such exchange.  Notwithstanding the limitations of this
   paragraph 6A, the Company may with your prior written consent (which
   consent will not be unreasonably withheld) pay dividends on its common
   stock in excess of the permitted amount of Restricted Payments to the
   extent, but only to the extent necessary to avoid incurring a personal
   holding company tax liability (hereinafter an "Excess Restricted
   Payment").  In the event the Company proposes to make an Excess Restricted
   Payment, it shall furnish to you a report showing the calculation of the
   potential personal holding company tax liability and amount of dividend
   necessary to avoid such liability.  You shall have ten business days after
   receipt of such report within which to object to the proposed Excess
   Restricted Payment.  Excess Restricted Payments and payments made pursuant
   to paragraph 6B shall be included in the computation of Restricted
   Payments or of Consolidated Net Income Available for Restricted Payments.

        6B.  Redemption or Purchase of Common Stock.  The Company shall not
   redeem, purchase or otherwise acquire, directly or indirectly, any shares
   of any class of its stock except for cash purchases or redemptions of its
   common stock from time to time for an aggregate amount not exceeding
   $200,000. Any such cash purchase or redemption shall be deemed a
   Restricted Payment and shall be subject to the limitations set forth in
   paragraph 6A hereof.

        6C.  Restriction on A. O. Smith Corporation Stock.  The Company will
   not at any time after the date hereof sell, transfer, assign, pledge or
   otherwise encumber, or agree to sell, transfer, assign, pledge or
   otherwise encumber, any of the shares of stock of A. O. Smith Corporation
   owned by it and will at all times continue to hold the shares of such
   stock as are set forth on Exhibit D, and any related stock dividends,
   stock splits or the substantial equivalent thereof, free and clear of all
   liens and encumbrances excepting that the Company may sell at market value
   not more than 519,692 shares of Common Stock presently owned by it
   provided (i)  that if the proceeds thereof, net after the payment of
   reasonable sale expenses and the payment of any income taxes actually
   incurred as a result of such sale (such income taxes, however, not to be
   in excess of the lesser of: (A)  such taxes computed as if the Company had
   no other income or gain for the year or years in which such tax is
   computed or, (B)  if such year or years had a loss carryforward, after
   applying such income or gain against such loss carryforward and before
   applying any other income or gain against such loss carryforward) are not,
   within 12 months after the date of such sale, utilized (in good faith) in
   the business development and business activities of the Company and its
   Subsidiaries (including, without limitation, using such proceeds to
   acquire another entity provided such other entity is engaged in a business
   related to one or more of the businesses then engaged in by the Company or
   a Subsidiary), and not, directly or indirectly, for any other purpose,
   then, at your option, a prorata portion (with the numerator being the
   outstanding principal balance of the Note, and the denominator being the
   total outstanding principal balance of all Current Debt and Funded Debt)
   of such proceeds not so utilized, shall be immediately applied, without
   premium, to the principal amounts due under the Note in the inverse order
   of their maturity, together with interest thereon to the date of payment,
   (ii)  that all of, or the remaining, proceeds thereof are immediately used
   to reduce other Current Debt and/or Funded Debt, (iii)  that any such sale
   is made in compliance with all applicable federal and state laws, and (iv)
   that copies of all documents filed with any regulatory agency or
   authority, or furnished to the Company's shareholders, together with such
   additional information and documents as you may reasonably request, are
   furnished to you prior to such sale.

        6D.  Debt Restriction.  The Company will not and will not permit any
   Subsidiary to create, incur, assume or suffer to exist at any time Funded
   Debt and Current Debt aggregating, on a consolidated basis, in excess of
   the sum of (i)  100% of the current market value (as of the date of
   computation of the aggregate of all such Debt) of the A. O. Smith
   Corporation stock then owned by the Company (including any Pledged Stock
   subject, at the time of such computation, to the Pledge Agreement) plus
   (or minus) (ii)  25% of the Consolidated Tangible Net Worth of the Company
   (or 100% of any negative Consolidated Tangible Net Worth of the Company)
   in each instance as of the last day of the preceding calendar quarter, and
   in each instance (when computing Consolidated Tangible Net Worth) after
   deducting its investment in A. O. Smith Corporation.  Market value of A.
   O. Smith Corporation stock shall be determined as of the day preceding the
   day on which such computation is made in the same manner set forth in
   paragraph 9(b) hereof for determination of the market value of any Pledged
   Stock.

        6E.  Merger, Consolidation or Sale of Assets.  The Company will not,
   and will not permit Belvedere Company, a division of the Company or any
   Subsidiary to merge or consolidate with any other corporation or to sell,
   transfer or assign all or substantially all of its assets to another
   corporation or Person without, in each instance, your prior written
   consent, which consent shall not be unreasonably withheld, except that (i) 
   any such Subsidiary may merge or consolidate with or sell, transfer or
   assign its assets to the Company (provided that the Company shall be the
   continuing or surviving corporation), and (ii)  the Company may merge with
   any other corporation, provided that (a)  the Company shall be the
   continuing or surviving corporation, and (b)  the Company shall not,
   immediately after such merger, be in default under any of its obligations
   under this Agreement, the Notes or the Pledge Agreement.

        6F.  Compliance With Law.  Neither the Company nor any of its
   Subsidiaries will be in violation of any laws, ordinances, governmental
   rules or regulations to which it is subject including, without limitation,
   those relating to the environment or the removal and disposition of
   hazardous or toxic material, or similar types of deposits, which
   violations would in the aggregate materially adversely affect the
   business, profits, properties, assets or financial condition of the
   Company and its Subsidiaries on a consolidated basis, unless it is
   contesting in good faith the validity, application or substance of any
   such law, ordinance, governmental rule or regulation (the good faith and
   appropriateness thereof to be the subject of an opinion of independent
   counsel for the Company or the applicable Subsidiary, which opinion will
   be furnished you upon your request).

        6G.  Employee Retirement Income Security Act of 1974.  Neither the
   Company nor any of its Subsidiaries will permit the existence of any
   Reportable Event (as defined in Title IV of ERISA) to continue for more
   than thirty days after you determine in good faith that such Event
   constitutes grounds for the termination of any Plan by the Pension Benefit
   Guaranty Corporation or for the appointment by the appropriate United
   States District Court of a trustee to administer any Plan (unless the
   existence of such Event or such consequences thereof are being contested,
   in good faith, by the Company), nor permit any Plan to be involuntarily
   terminated within the meaning of Title IV of ERISA, or any trustee to be
   appointed by the appropriate United States District Court to administer
   any Plan, nor permit the Pension Benefit Guaranty Corporation to institute
   proceedings to terminate any Plan or to appoint a trustee to administer
   any Plan.  For purposes of this Agreement, "Plan" means any employee
   pension benefit plan subject to Title IV of ERISA maintained by the
   Company or any of its Subsidiaries, or any such plan to which the Company
   or of its Subsidiaries is required to contribute on behalf of its
   employees.

        6H.  Voting A. O. Smith Stock.  In connection with any A. O. Smith
   Corporation Class A Common Stock and Common Stock owned or hereafter
   acquired by the Company, including without limitation, all of the stock
   set forth on Exhibit D hereof, the Company shall not vote for, and shall
   not give any consent, waiver or ratification which would result in an
   amendment, modification or waiver of any of the provisions of the
   Certificate of Incorporation of A. O. Smith Corporation affecting or
   relating to the convertibility of any Class A Common Stock into Common
   Stock, or which would otherwise affect or relate to the convertibility of
   any Class A Common Stock into Common Stock, and shall affirmatively vote
   against the same.

        7.   Affirmative Covenants.  The Company agrees that, until the Note
   or Notes have been paid in full in accordance with the terms hereof:

        7A.  Financial Statements.  The Company will deliver to you so long
   as you shall hold any Note and to any requesting holder or holders of 10%
   or more in aggregate unpaid principal amount of the Notes then outstanding
   in duplicate:

             (i)  as soon as practicable and in any event within 45 days
        after the end of each quarterly period (other than the last) in each
        fiscal year a consolidated statement of earnings, a consolidated
        statement of earnings retained in the business and a consolidated
        statement of cash flows of the Company for the periods from the
        beginning of the current fiscal year and from the beginning of such
        quarterly period to the end of such quarterly period, and a
        consolidated balance sheet of the Company as at the end of such
        quarterly period, setting forth in each case in comparative form
        corresponding figures for the corresponding periods in the preceding
        fiscal year, all in reasonable detail and certified by an authorized
        financial officer of the Company, subject to changes resulting from
        year-end adjustments;

             (ii)  as soon as practicable and in any event within 120 days
        after the end of each fiscal year, a consolidated statement of
        earnings, a consolidated statement of earnings retained in the
        business and a consolidated statement of cash flows of the Company
        for such year, and a consolidated balance sheet of the Company as of
        the end of such year, setting forth in each case in comparative form
        corresponding figures for the preceding fiscal year, all in
        reasonable detail and satisfactory in scope to you and audited by
        independent certified public accountants of nationally recognized
        standing selected by the Company, whose opinion shall be in scope and
        substance satisfactory to you and who shall have authorized the
        Company to deliver such financial statements and opinion to you
        pursuant to this Agreement;

             (iii)  as soon as possible, copies of all such financial
        statements, reports and returns as it shall send to its stockholders
        and of all regular or periodic reports which it is or may be required
        to file with the Securities and Exchange Commission or any
        governmental department, bureau, commission or agency succeeding to
        the functions of the Securities and Exchange commission; and

             (iv)  with reasonable promptness, such other data, including
        copies of any detailed reports submitted to the Company by
        independent accountants in connection with each annual or interim
        audit of the books of the Company and its Subsidiaries made by such
        accountants, as you may reasonably request from time to time relating
        to the covenants, terms and provisions of this Agreement and whether
        the same have been complied with by the Company and its Subsidiaries.

   All financial statements specified in clauses (i)  and (ii)  above shall
   be furnished in consolidated form (and the financial statements specified
   in clause (ii)  above shall also be furnished in consolidating form), for
   the Company and all consolidated subsidiaries which the Company may at the
   time have. Together with each delivery of financial statements required by
   clauses (i)  and (ii)  above, the Company will deliver to you an Officer's
   Certificate stating that there exists no Event of Default or Default, or
   if any such Event of Default or Default exists, specifying the nature
   thereof, the period of existence thereof and what action the Company
   proposes to take with respect thereto.  The Company also covenants that
   forthwith upon any officer of the Company obtaining knowledge of any Event
   of Default or Default under this Agreement, it will deliver to you an
   Officer's Certificate specifying the nature thereof, the period of
   existence thereof and what action the Company proposes to take with
   respect thereto.  You are hereby authorized to deliver a copy of any
   financial statement delivered to you pursuant to this paragraph 7A to any
   regulatory body having jurisdiction over you.

        7B.  A. O. Smith Information.  The Company shall deliver to you as
   soon as possible copies of all financial statements, notices, reports and
   other information or documentation which A. O. Smith Corporation shall
   send to its stockholders and of all regular or periodic reports which it
   is or may be required to file with the Securities and Exchange Commission
   or any successor agency.  In the event that A. O. Smith Corporation shall
   fail or cease to file reports with the Securities and Exchange
   Commission,you shall be furnished financial statements for A. O. Smith
   Corporation substantially similar to those required from the Company by
   clauses (i)  and (ii)  of paragraph 7A within the time periods specified
   therein.

        7C.  Inspection of Property.  The Company will permit any person
   designated in writing by you so long as you shall hold any Notes and any
   requesting holder or holders of 10% or more in aggregate unpaid principal
   amount of the Notes then outstanding, to visit and inspect any of the
   properties, corporate books and financial records of the Company and its
   Subsidiaries, and to discuss the affairs, finances and accounts of any of
   such corporations with the principal officers of the Company, all at such
   reasonable times and as often as you may reasonably request. Except as
   permitted in this Agreement or as may be necessary in connection with the
   enforcement of the Company's obligations hereunder and under the Notes,
   you agree, and any such holders must agree prior to making any inspection,
   to keep all nonpublic information concerning the Company confidential.

        7D.  Maintenance of Business.  The Company and its Subsidiaries will
   preserve and keep in force and effect all licenses and permits necessary
   to the proper conduct of their respective businesses, the failure of which
   to keep in full force and effect would have a material adverse effect on
   the condition, financial or otherwise, of the Company and its
   Subsidiaries, taken as a whole. 

        7E.  Taxes.  The Company will duly pay or discharge and will cause
   its Subsidiaries to duly pay and discharge all taxes, assessments and
   other governmental charges upon or against the Company or such
   Subsidiaries or their respective properties as well as all other
   liabilities of the Company or such Subsidiaries, in each case before the
   same become delinquent and before penalties accrue thereon, unless and to
   the extent that the same are being contested in good faith and by
   appropriate proceedings.

        7F.  Insurance.  The Company will keep and maintain or cause to be
   kept and maintained, with financially sound and reputable insurers,
   insurance with respect to its properties and business and the properties
   and businesses of each of its Subsidiaries against such casualties, risks
   and contingencies, and of such types, and having such terms, and in such
   amounts, as is required by law or as is customary for corporations or
   other persons engaged in the same or similar business or having similar
   properties similarly situated.

        7G.  Notice of Reportable Events.  The Company will deliver to you as
   long as you shall hold any Note and to any requesting holder or holders
   of 10% or more in aggregate unpaid principal amount of the Notes then
   outstanding, as soon as possible and in any event within 30 days after the
   Company shall have obtained knowledge that a Reportable Event has occurred
   with respect to any Plan, a certificate of an officer of the Company
   setting forth the details as to such Reportable Event and the action which
   the Company proposes to take with respect thereto, and a copy of each
   notice of a Reportable Event sent to the Pension Benefit Guaranty
   Corporation by the Company.

        8.   Events of Default; Remedies.  If any of the following events
   shall occur and be continuing, it shall constitute an Event of Default as
   the term is used herein: 

             (a)  If the Company defaults in the payment of any principal of
        any Note, when the same shall become due, either by the terms thereof
        or otherwise as herein provided; or

             (b)  If the Company defaults in the payment of any interest on
        any Note for more than 10 days after the date due; or

             (c)  If the Company defaults in any payment of principal of or
        interest on any other obligation for borrowed money (including
        guarantees and any obligation secured by purchase money mortgage
        which exceed $50,000 in the aggregate) beyond any period of grace
        provided with respect thereto or defaults in the performance of any
        other agreement, term or condition contained in any agreement under
        which any such obligation is created if the effect of such default is
        to cause such obligation to become due prior to its stated maturity
        unless the Company is contesting in good faith by appropriate
        proceedings the default or alleged default on such other obligation
        and you have been furnished with an opinion of counsel satisfactory
        to you to the effect that the Company is not in default on such
        obligation; or

             (d)  If any material representation or warranty made by the
        Company herein, in the Pledge Agreement or in any writing furnished
        in connection with or pursuant to this Agreement or the Pledge
        Agreement shall be false in any material respect on the date as of
        which made; or

             (e)  If the Company defaults in the performance or observance of
        any agreement or covenant contained in paragraph 6 or 9 hereof, or in
        the Pledge Agreement;

             (f)  If the Company defaults in the performance or observance of
        any other agreement, covenant, term or condition contained herein and
        such default shall not have been remedied within 30 days after
        written notice thereof shall have been received by the Company from
        you; or

             (g) If the Company makes an assignment for the benefit of
        creditors; or

             (h)   If the Company petitions or applies to any tribunal for
        the appointment of a trustee or receiver of the Company, or of any
        substantial part of the assets of the Company, or commences any
        proceedings relating to the Company under any bankruptcy,
        reorganization, arrangement, insolvency, readjustment of debt,
        dissolution or liquidation laws of any jurisdiction, whether now or
        hereafter in effect; or

             (i)  If any such petition or application is filed, or any such
        proceedings are commenced, against the Company, and the Company by
        any act indicates its approval thereof, consent thereto, or
        acquiescence therein, or an order entered appointing any such trustee
        or receiver, or adjudicating the Company bankrupt or insolvent, or
        approving the petition in any such proceedings, and such order
        remains in effect for more than 60 days; or

             (j)  If any order is entered in any proceedings against the
        Company decreeing the dissolution or split-up of the Company, and
        such order remains in effect for more than 60 days.

   When an Event of Default described in clauses (a)  or (b)  above has
   occurred and is continuing, any holder of any Note may, and when any Event
   of Default described in clauses (c) through (f) above has occurred and is
   continuing, the holder or holders of 50% or more in aggregate unpaid
   principal amount of the Notes at the time outstanding may, by notice in
   writing to the Company, declare the principal of and any accrued interest
   on all outstanding Notes to be immediately due and payable; and thereupon
   all Notes, including both principal and interest, shall become immediately
   due and payable.    When any Event of Default described in clauses (g) 
   through (j), inclusive, has occurred then all outstanding Notes, including
   both principal and interest, shall immediately become due and payable
   without presentment, demand or notice of any kind.

        The Company agrees to pay to the holder or holders of any of the
   Notes then outstanding hereunder all costs and expenses incurred by them
   in the collection of any such Notes, including reasonable compensation to
   such holder or holders' attorneys for all services rendered in connection
   therewith.

        In addition to the other rights granted to the holder or holders of
   the Notes herein upon the happening of an Event of Default, if the Event
   of Default shall have occurred as a result of the intentional, deliberate
   and willful violation by the Company of any provision, covenant or
   agreement hereof, and if the principal and interest on the Notes have been
   declared due and payable in the manner above specified, then, to the full
   extent enforceable under applicable law, the holder or holders of the
   Notes shall be entitled to receive and the Company shall be obligated and
   promises to pay, in addition to all other amounts provided for herein, a
   premium, which premium shall be equal to 6.95% of such principal and
   interest, or such lesser premium which would have been payable under
   paragraph 4D had there been a voluntary prepayment by the Company at the
   time the principal was declared due and payable by said holder or holders.

        The rights and remedies set forth in this letter agreement and in the
   Pledge Agreement are in addition to all rights and remedies granted by law
   or in equity.

        9.   Pledge of Stock.

        9A.  Delivery of Pledged Stock.  At Closing the Company shall deliver
   to you or your agent as security for the Notes the number of shares of A.
   O. Smith Corporation stock (subject to adjustment from time to time as
   hereinafter set forth) with appropriate stock powers executed by the
   Company in blank, necessary to provide 150% market value coverage to the
   principal amount of the Notes plus interest thereon for one quarter (the
   "Pledged Stock").  Class A Common Stock shall be delivered first; if
   exhausted, Common Stock shall be delivered.  When so implemented, the
   Pledge Agreement shall create a first lien security interest in the
   Pledged Stock.

        9B.  Adjustments of Pledged Stock.  The aggregate market value of
   the Pledged Stock shall at all times be at least equal to 150% of the
   aggregate outstanding principal balance of the Note or Notes plus accrued
   interest and any other amounts due thereon.  The aggregate market value of
   the Pledged Stock shall be determined initially, that is, when delivered
   to you, based on the last per share sale price for the stock of A. O.
   Smith Corporation (Class A Common Stock or Common Stock depending on which
   is being valued) as reported in the American Stock Exchange-Composite
   Transactions section of the Midwest Edition of the Wall Street Journal for
   the last business day prior to such delivery (unless the American Stock
   Exchange is closed on such date, then the last business day the American
   Stock Exchange is open prior to such delivery), or in case no sale of such
   A. O. Smith Corporation stock has taken place on such day, then the
   average of the closing bid and asked prices in the American Stock Exchange
   on such day as confirmed in writing addressed to you and the Company by a
   Milwaukee brokerage firm selected by you that is a member of the American
   Stock Exchange and delivered to you with the Pledged Stock.

        The aggregate market value of the Pledged Stock shall be computed by
   the Company monthly on the first business day of each calendar month so
   long as the Note or Notes remain outstanding based upon the last per share
   sale price for the applicable class of stock of A. O. Smith Corporation as
   reported in the American Stock Exchange-Composite Transactions section of
   the Midwest Edition of the Wall Street Journal for the last business day
   of the preceding calendar month (unless the American Stock Exchange is
   closed on such date, then on the last business day the American Stock
   Exchange is open prior to such date), or in case no sale of such A. O.
   Smith Corporation stock has taken place on such day, then the average of
   the closing bid and asked prices on such day on the American Stock
   Exchange as confirmed to you and the Company by a Milwaukee brokerage firm
   selected by you that is a member of the American Stock Exchange.  Advice
   as to such aggregate market value at the end of the preceding calendar
   month and the basis for the computation thereof (including any report as
   to the closing bid and asked prices by a Milwaukee brokerage firm) shall
   be given to you by the Company by the third business day of each calendar
   month in writing, or by telephonic or facsimile communication confirmed in
   writing immediately thereafter.

        In the event A. O. Smith Corporation (Class A Common Stock or Common
   Stock depending on which is being valued) is no longer traded on the
   American Stock Exchange but is regularly traded (and quoted) on another
   recognized United States exchange, such other exchange shall be
   substituted for the American Stock Exchange in this paragraph 9.

        In the event the market value of Class A Common Stock cannot be
   determined as provided herein, whether because such stock is no longer
   regularly traded on any exchange or for any other reason, such market
   value shall be determined as if such Class A Common Stock had been
   converted to Common Stock.

        To the extent that the aggregate market value of the Pledged Stock
   held on the last day of any calendar month shall not be at least equal to
   (i)  150% of the then outstanding principal balance of the Note or Notes
   plus accrued interest and any other amounts due thereon less (ii)
   $100,000, the Company shall deliver to you or your agent by the fifth
   business day of the following calendar month additional certificates
   representing sufficient additional shares of Pledged Stock so that the
   aggregate market value of the Pledged Stock at the end of the preceding
   calendar month, including such additional shares, shall be at least equal
   to 150% of the then outstanding principal balance of the Note or Notes
   plus accrued interest and any other amounts due thereon.

        To the extent the aggregate market value of the Pledged Stock held on
   the last day of any calendar month is more than $100,000 in excess of 150%
   of the then outstanding principal balance of the Note or Notes plus
   accrued interest and any other amounts due thereon, and providing no Event
   of Default or Default exists, upon written request by the Company
   addressed to you accompanied by an Officer's Certificate to the effect
   that no Event of Default or Default exists, you shall, or you shall
   instruct your agent to, return to the Company (subject to the provisions
   of paragraph 9D hereof) within five business days after your receipt of
   such notice and Officer's Certificate certificates for sufficient shares
   of Pledged Stock to reduce the aggregate market value of the Pledged Stock
   then held so that it shall not be in excess of 150% (or such higher
   percentage as the Company shall specify in said written request to you) of
   the then outstanding principal balance of the Note or Notes plus accrued
   interest and any other amounts due thereon.

        For the purpose of meeting the requirements of this subparagraph B,
   certificates for shares of Pledged Stock required to be delivered to you
   or your agent or returned to the Company as the case may be, shall (except
   as otherwise provided in this subparagraph B or in the Pledge Agreement)
   represent a number of shares of Pledged Stock, in the aggregate, so as to
   be equal to the nearest 100 shares of the number of shares of Pledged
   Stock required to be delivered to you or your agent or returned to the
   Company, as the case may be. All Pledged Stock delivered to you or your
   agent pursuant to the requirements of this subparagraph B shall be
   accompanied by appropriate stock powers endorsed in blank by the Company
   and shall be subject to the first lien of the Pledge Agreement.

        9C.  Agent Under the Pledge Agreement.  You have advised us that
   MARSHALL & ILSLEY TRUST COMPANY, 1000 North Water Street, Milwaukee,
   Wisconsin ("Bank") will act, unless you advise the Company to the contrary
   in writing, as agent for you to hold the Pledged Stock, together with the
   stock powers relating thereto, in safekeeping.  The Bank, as such agent,
   will act with respect to the Pledged Stock only upon your express written
   instructions. The Company agrees to pay all reasonable fees of the Bank
   for its services as such agent, promptly after receipt from you of any
   statement by the Bank for such services.

        9D.  Stock Not Pledged.  Any of the A. O. Smith Corporation stock
   referred to in paragraph 6C of this Agreement, when not subject to the
   Pledge Agreement, shall be held in a safety deposit box in the Company's
   name at the M&I Marshall & Ilsley Bank, Menomonee Falls, Wisconsin office
   ("M&I").  Promptly following the end of each calendar quarter an officer
   of the M&I and an officer of the Company shall each certify to you in
   writing that such stock remains in such safety deposit box, identifying
   the same by certificate number, number of shares and class.  You may, at
   any time, upon reasonable notice to the Company, make your own examination
   of said safety deposit box to confirm and identify that such A. O. Smith
   Corporation stock remains in such box.  The Company will provide access to
   said box to any representative authorized by you who may be accompanied by
   a representative of the Company and/or the M&I.  Withdrawal of stock from
   said safety deposit box to satisfy the requirements of this paragraph 9
   may be made, provided, however, that prompt written notice thereof is
   given by the Company to you, and provided also that such stock is directly
   and promptly delivered to the Bank to be held by the Bank pursuant to the
   Pledge Agreement.  Withdrawal of stock from said safety deposit box may
   also be made to divide an individual certificate into certificates
   representing (in the aggregate) the same number of shares (in order to
   satisfy the requirements of this paragraph 9) provided, however, that
   prompt written notice thereof is given by the Company to you (giving the
   certificate number and number of shares being withdrawn), that such
   certificate is immediately delivered to the transfer agent for division,
   that the resulting certificates are, upon return by the transfer agent,
   immediately returned to the safety deposit box, and that no more than
   750,000 shares evidenced by no more than one certificate, are withdrawn
   and outstanding at any one time.  The provisions of this paragraph shall
   not limit or restrict the Company's right to sell 519,692 shares of Common
   Stock pursuant to paragraph 6C hereof.

        9E.  Decline in Value: Prepayment.  If at the time an additional
   pledge of A. O. Smith Corporation stock is required under this paragraph
   9, the market value of all of the A. O. Smith Corporation stock subject to
   pledge under this Agreement (being all of the stock referred to in
   paragraph 6C hereof) is not sufficient to satisfy the requirements of
   subparagraph B above, the Company shall nevertheless complete the pledge
   of stock required hereunder.  The Company may then immediately prepay the
   Note in full, and all accrued interest, without premium; otherwise you may
   proceed to exercise your rights under paragraph 8 of this Agreement and
   under the Pledge Agreement.

        10.  Representation by Aid Association for Lutherans.  You represent
   and in making this sale to you it is specifically understood and agreed
   that you are acquiring the Note for the purpose of investment and not with
   a present intention of selling or of making any other distribution
   thereof, provided that the disposition of your property shall at all times
   be and remain within your control.

        11.  Definitions.  For the purposes of this Agreement, the following
   terms shall have the following meanings:

        11A. "Capitalized Lease Obligations"   shall mean all rental
   obligations which, under generally accepted accounting principles, are or
   will be required to be capitalized on the books of the Company or any
   Subsidiary in accordance with such principles.  "Capitalized Lease" shall
   mean a lease the rental obligations under which are Capitalized Lease
   Obligations.

        11B. "Consolidated Net Income"  shall mean the consolidated net
   income of the Company determined in accordance with generally accepted
   accounting principles consistently applied.  (See paragraph 11P.)

        11C. "Consolidated Tangible Net Worth"  shall mean the gross book
   value of the assets of the Company and its Subsidiaries (exclusive of
   goodwill, patents, trademarks, tradenames, organization expense, treasury
   stock, unamortized debt discount and expense and other intangibles but
   including those intangibles resulting from the acquisitions of Central
   States Distribution Service, Inc. and Berlin Industries, Inc.) less
   reserves applicable thereto and all liabilities (including deferred income
   taxes and minority interests) other than capital stock and surplus, all
   determined on a consoldiated basis in accordance with generally accepted
   accounting principles consistently applied. (See paragraph 11P.)

        11D. "Current Debt"  shall mean all indebtedness for borrowed money
   maturing on demand or not more than one year after the date of
   determination thereof and not renewable or extendible at the option of the
   obligor beyond such year, provided that indebtedness for borrowed money
   arising under a revolving credit or similar agreement which obligates the
   lender to extend credit over a period of more than one year shall
   constitute Funded Debt and not Current Debt.

        11E. "ERISA"  shall mean the federal Employment Retirement Income
   Security Act of 1974, as amended.

        11F. "Event of Default"  shall mean any of the events specified in
   paragraph 8, provided that there has been satisfied any requirement in
   connection with such event for the giving of notice, or the lapse of time,
   or the happening of any further condition, event or act, and "Default"
   shall mean any of such events, whether or not any such requirement has
   been satisfied. 

        11G. "Foreign Subsidiaries"   shall mean Belvedere Company Canada,
   Inc. and Ensambles De Silleria Mexicana, S.A. de C.V.

        11H. "Funded Debt"   shall mean and include without duplication,

             (i)  any obligation payable more than one year from the date of
        creation thereof,  which under generally accepted accounting
        principles is shown on the balance sheet as a liability (including
        Capitalized Lease Obligations but excluding reserves for deferred
        income taxes and other reserves to the extent that such reserves do
        not constitute an obligation),

             (ii)  indebtedness payable more than one year from the date of
        creation thereof which is secured by any lien on property owned by
        the Company or any Subsidiary, whether or not the indebtedness
        secured thereby shall have been assumed by the Company or such
        Subsidiary,

             (iii)  guarantees, endorsements (other than endorsements of
        negotiable instruments for collection in the ordinary course of
        business) and other contingent liabilities (whether direct or
        indirect) in connection with the obligations, stock or dividends of
        any Person, 

             (iv)  obligations under any contract providing for the making of
        loans, advances or capital contributions to any Person, in each case
        in order to enable such Person primarily to maintain working capital,
        net worth or any other balance sheet condition or to pay debts,
        dividends or expenses,

             (v)  obligations under any contract for the purchase of
        materials, supplies or other property or services if such contract
        (or any related document) requires that payment for such materials,
        supplies or other property or services shall be made regardless of
        whether or not delivery of such materials, supplies or other property
        or services is ever made or tendered,

             (vi)  obligations under any contract to rent or lease (as
        lessee) any real or personal property if such contract (or any
        related document) provides that the obligation to make payments
        thereunder is absolute and unconditional under conditions not
        customarily found in commercial leases then in general use or
        requires that the lessee purchase or otherwise acquire securities or
        obligations of the lessor,

             (vii)  obligations under any contract for the sale or use of
        materials, supplies or other property or services if such contract
        (or any related document) requires that payment for such materials,
        supplies or other property or services, or the use thereof, shall be
        subordinated to any indebtedness (of the purchaser or user of such
        materials, supplies or other property or the Person entitled to the
        benefit of such services) owed or to be owed to any Person, and

             (viii)  obligations under any other contract which, in economic
        effect, is substantially equivalent to a guarantee,

   all as determined in accordance with generally accepted accounting
   principles.

        11I. "Officer's Certificate"  shall mean a certificate signed in the
   name of the Company by its Chairman of the Board, President, one of its
   Vice Presidents, its Treasurer or its Secretary.

        11J. "Person"  shall mean and include an individual, a partnership, a
   joint venture, a corporation, a trust, an unincorporated organization and
   a government or any department or agency thereof.

        11K. "Plan"  shall mean any pension benefit plan subject to Title IV
   of ERISA maintained by the Company, any Subsidiary or any member of the
   controlled group (a controlled group of corporations as defined in Section
   1563 of the Internal Revenue Code of 1954, as amended, of which the
   Company is a part), or any such Plan to which the Company, any Subsidiary
   or any member of the controlled group is required to contribute on behalf
   of its employees.

        11L. "Reportable Event"  shall mean a reportable event as that term
   is defined in Title IV of ERISA.

        11M. "Subsidiary"   shall mean and include any corporation, more than
   50% of the Voting Stock of which, shall, at the time any determination is
   made, be owned by the Company either directly or through Subsidiaries. 
   (See paragraph 11P)

        11N. "Voting Stock"  shall mean and include stock of the class or
   classes having general voting power under ordinary circumstances to elect
   at least a majority of the board of directors, managers or trustees of
   such corporation (irrespective of whether or not at the time stock of any
   other class or classes shall have or might have voting power by reason of
   the happening of any contingency).

        11O. There is no 11O.

        11P. Limitations (A. O.  Smith Corporation).  For purposes of this
   Agreement and the definitions herein contained, A. O. Smith Corporation
   shall not be deemed a Subsidiary, nor shall its financial statements be
   consolidated with the financial statements of the Company notwithstanding
   Statement of Financial Accounting Standards No. 94 or the references in
   this Agreement to "consolidated" or to generally accepted accounting
   principles; rather the interest of the Company in A. O. Smith Corporation,
   shall, as it has in the past, continue to be reflected pursuant to the
   equity method of accounting.

        12.  Miscellaneous.

        12A. Home Office Payment.  The Company agrees that, as long as you
   shall hold any Note, it will make payments of principal thereof and
   interest and premium, if any, thereon, and give notices relating thereto,
   in the manner and to the account designated by you in Exhibit F hereto
   attached, or in such other manner and to such other account within the
   United States as you may designate in writing, not withstanding any
   contrary provision herein or in any Note with respect to the place of
   payment.  You agree that, before disposing of any Note, you will make a
   notation thereon of all principal payments previously made thereon and of
   the date to which interest thereon has been paid, and will notify the
   Company of the name and address of the transferee of such Note.

        12B. Non-Business Due Date.  If any payment of principal or interest
   falls due on a Saturday, Sunday or other day which is not a business day,
   then such due date shall be extended to the next following business day
   and additional interest shall accrue and be payable for the period of such
   extension.

        12C. Expenses.  Whether or not the transactions herein contemplated
   shall be consummated, the Company agrees to pay all expenses incident to
   the transactions contemplated by this Agreement, including but not limited
   to, all printing expenses and the reasonable charges and disbursements of
   your special counsel.  In addition, so long as you hold any of the Notes,
   the Company will pay all such expenses relating to amendments, waivers or
   consents with respect thereto.  Although the Company is of the opinion and
   is so advised by its counsel that no federal or state documentary or
   similar taxes are payable in respect to this Agreement or the Notes the
   Company will pay such taxes, including interest and penalties, in the
   event any such taxes are assessed irrespective of when such assessment is
   made and whether or not any Notes are then outstanding and agrees to
   indemnify and hold you harmless from any liability on account of such
   taxes.  If and to the extent that any interest equalization taxes or other
   similar levies of the United States of America designed to limit or
   restrict investments in foreign securities shall be payable or determined
   to be payable in connection with any of the transactions hereby
   contemplated as a result of your reliance upon the truth and accuracy of
   the representations of the Company contained in paragraph 5K, the Company
   will indemnify and hold you and all subsequent holders of any of the Notes
   harmless from all such liabilities (including any income taxes in respect
   of any reimbursement of any such interest equalization taxes or other
   similar levies), whether or not any Notes are then outstanding.

        12D. Consent to Amendments.  This Agreement may be amended, and the
   Company may take any action herein prohibited, or omit to perform any act
   herein required to be performed by it, if the Company shall obtain the
   written consent to such amendment, action or omission to act given by the
   holder or holders of at least two-thirds of the principal amount of the
   Notes at the time outstanding, except that, without the written consent of
   the holder or holders of all of the Notes affected thereby at the time
   outstanding, no amendment to this Agreement shall extend the maturity of
   any Note, or reduce the rate of interest or premium payable with respect
   to any Note, or affect the amount of any required prepayments, or reduce
   the proportion of the principal amount of the Notes required with respect
   to any consent or give any Note preference over any other Note.  Each
   holder of any Note at the time or thereafter outstanding shall be bound by
   any consent authorized by this paragraph 12D, whether or not such Note
   shall have been marked to indicate such consent, but any Note issued
   thereafter shall bear a notation referring to any such consent.  No such
   consent shall extend to or affect any obligation not expressly amended or
   waived or impair any right consequent thereon.

        12E. Form, Reqistration. Transfer and Exchange of Notes.  The Notes
   are issuable only as registered Notes without coupons in the denominations
   of $1,000,000 and any integral multiple of $1,000,000.  The Company shall
   keep at its principal office a register in which the Company shall provide
   for the registration of Notes and of transfers of Notes.  Upon surrender
   for registration of transfer of any Note at the office of the Company, the
   Company shall execute and deliver, at its expense, one or more new Notes
   of the same type and of a like aggregate unpaid principal amount
   registered in the name of the designated transferee or transferees.  At
   the option of the holder of any Note, such Note may be exchanged for other
   Notes of the same type of any authorized denominations, of a like
   aggregate unpaid principal amount, upon surrender of the Note to be
   exchanged at the office of the Company.  Whenever any Notes are so
   surrendered for exchange, the Company shall execute and deliver, at its
   expense, the Notes which the Note holder making the exchange is entitled
   to receive.  Every Note presented or surrendered for registration of
   transfer shall be duly endorsed, or be accompanied by a written instrument
   of transfer duly executed, by the holder of such Note or his attorney duly
   authorized in writing.  Any Note or Notes issued in exchange for any Note
   or upon transfer thereof shall be substantially in the form of Exhibit A
   hereto attached, with appropriate insertions and variations and carrying
   the rights to unpaid interest and interest to accrue were carried by the
   Note so exchanged or transferred, and neither gain nor loss of interest
   shall result from any such transfer or exchange.

        12F. Persons Deemed Owners.  The Company may treat the person in
   whose name any Note is registered as the owner and holder of such Note for
   the purpose of receiving payment of principal of (and premium, if any) and
   interest on, such Note and for all other purposes whatsoever, whether or
   not such Note shall be overdue, and the Company shall not be affected by
   notice to the contrary.

        12G. Survival of Representations and Warranties.  All representations
   and warranties contained herein or made in writing by the Company in
   connection herewith shall survive the execution and delivery of this
   Agreement, the Pledge Agreement and of the Notes.

        12H. Loss or Destruction of Note.  Upon receipt of evidence
   satisfactory to the Company of the loss, theft, mutilation or destruction
   of any Note, and in the case of any such loss, theft or destruction upon
   delivery of a bond of indemnity in such form and amount as shall be
   reasonably satisfactory to the Company, or in the event of such mutilation
   upon surrender and cancellation of the Note, the Company will make and
   deliver a new Note, of like tenor, in lieu of such lost, stolen, destroyed
   or mutilated Note.  If you are the owner of any such lost, stolen or
   destroyed Note, then the affidavit of your president or treasurer setting
   forth the fact of loss, theft or destruction and of your ownership of the
   Note at the time of such loss, theft or destruction shall be accepted as
   satisfactory evidence thereof and no indemnity shall be required as a
   condition to execution and delivery of a new Note other than your written
   agreement to indemnify the Company.

        12I. Delay not Waiver.  No delay or failure on the part of you or the
   holder of any Note in the exercise of any power or right shall operate as
   a waiver thereof; nor shall any single or partial exercise of the same
   preclude any other or further exercise, thereof, or the exercise of any
   other power or right, and the rights and remedies of you and the holder of
   any Note are cumulative to and not exclusive of any rights or remedies
   which you or any such holder would otherwise have.

        12J. Successors and Assigns.  All covenants and agreements in this
   Agreement contained by or on behalf of either of the parties hereto shall
   bind and inure, to the benefit of the respective successors and assigns of
   the parties hereto whether so expressed or not.

        12K. Notices.  All communications provided for hereunder shall be
   sent by first class mail and, if to you, addressed to you in the manner
   (except as otherwise provided in paragraph 12A with respect to payments of
   principal of and interest and premium, if any, on the Notes and notices
   relating thereto) in which this letter is addressed, and if to the
   Company, at Post Office Box 23976, Milwaukee,Wisconsin 53223 (Attention: 
   Treasurer), or to such other address with respect to either party as such
   party shall notify the other in writing.  Notices by the Company given
   pursuant to paragraph 4E shall be given by registered or certified mail.

        12L. Descriptive Headings.  The descriptive headings of the several
   paragraphs of this Agreement are inserted for convenience only and do not
   constitute a part of this Agreement.

        12M. Governing Law.  This Agreement is being delivered and is
   intended to be performed in the State of Wisconsin, and shall be construed
   and enforced in accordance with the laws of such state.

        12N. Counterparts.  This Agreement may be executed simultaneously in
   two or more counterparts, each of which shall be deemed an original, and
   it shall not be necessary in making proof of this Agreement to produce or
   account for more than one such counterpart.

        If you are in agreement with the foregoing, please sign the form of
   acceptance on the enclosed counterpart of this letter and return the same
   to the undersigned, whereupon this letter shall become a binding agreement
   between you and the undersigned.

                                      Very truly yours,

      (Corporate Seal)                SMITH INVESTMENT COMPANY


    Attest:                           By  /s/ Arthur O. Smith
                                          Arthur O. Smith
    /s/ Wesley A. Ulrich                  Chairman, President & Chief
                                          Executive Officer
    Wesley A. Ulrich
    Secretary & Treasurer              AID ASSOCIATION FOR LUTHERANS


                                       By  /s/ James Abitz
                                           James Abitz
                                           Vice President - Securities


                                       By  /s/ R. Jerry Scheel
                                           R. Jerry Scheel
                                           Second Vice President -
                                           Securities


   

    Exhibit A         -       Note
    Exhibit B         -       Pledge Agreement
    Exhibit C         -       Subsidiaries
    Exhibit D         -       A. O. Smith Corporation Stock
    Exhibit E         -       Other Debt Restricting Funded Debt
    Exhibit F         -       Note Payment and Notice Instructions



                                PLEDGE AGREEMENT

             PLEDGE AGREEMENT (this "Pledge Agreement"), dated June 30, 1993,
   between SMITH INVESTMENT COMPANY, a Delaware corporation (the "Pledgor"),
   the AID ASSOCIATION FOR LUTHERANS, a Wisconsin fraternal benefit society
   (herein, in its capacity as pledgee hereunder, together with its
   successors as pledgee hereunder, called the "Pledgee"):

                              PRELIMINARY STATEMENT

        The Pledgor has entered into a letter agreement, dated as of June
   15, 1993 (herein, as amended and modified from time to time, called the
   "Agreement"), with Aid Association for Lutherans, a Wisconsin fraternal
   benefit society, providing for the purchase by Pledgee of the Pledger's
   6.95% Notes due June 30, 2003 (herein, together with all securities issued
   in exchange or replacement therefor, called the "Notes"), in an aggregate
   principal amount not to exceed $20,000,000.  Capitalized terms used herein
   without definition have the meanings ascribed to them in the Agreement.

        The Agreement provides, among other things, that the Pledgor grant
   to the Pledgee a first security interest in the Pledged Stock hereinafter
   mentioned as security for the Notes. 

                                     PLEDGE

        The Pledgor hereby grants a security interest in, and delivers to
   the Pledgee or such agent as the Pledgee has duly designated in writing to
   the Pledgor prior to or concurrently with such delivery, as security for
   the payment of the Notes and the due performance of all obligations of the
   Pledgor under the Agreement and under this Pledge Agreement, the A.O.
   Smith Corporation shares of stock, with appropriate stock powers executed
   by the Pledgor in blank, as required by and as described in the Agreement
   (herein, together with any additional shares of such stock and stock
   powers that may be delivered to the Pledgee or its agent in accordance
   with the Agreement, called the "Pledged Stock").  The Pledgor represents
   and warrants to, and agrees with, the Pledgee that as of the date hereof
   and as of the date of any future delivery to the Pledgee or its agent,
   such shares of stock of A.O. Smith Corporation are and will be represented
   by stock certificates, and that each such stock certificate, accompanied
   by an instrument of assignment duly executed in blank by the Pledgor, will
   be delivered by the Pledgor to the Pledgee or the Pledgee's duly
   designated agent.  The number of shares of Pledged Stock subject hereto
   may be increased or decreased, from time to time, all as provided in the
   Agreement.

        The Pledged Stock is to be held and disposed of subject to the terms,
   covenants and conditions hereinafter set forth:

        1.   Terms of Acceptance by Pledgee.  The Pledgee accepts the deposit
   and pledge of the Pledged Stock made by the Pledgor hereunder and agrees
   to hold the Pledged Stock, or by its duly designated agent, as herein
   provided, but only upon the following terms and conditons:

             (a)  each holder of a Note by its acceptance thereof authorizes
        the Pledgee to exercise such powers under this Pledge Agreement as
        are specifically delegated to the Pledgee by the terms hereof,
        together with such powers as are reasonably incidental thereto;

             (b)  the Pledgee may execute any of its duties under this Pledge
        Agreement by or through agents or employees and shall be entitled to
        retain counsel and to act in reliance upon the advice of such counsel
        concerning all matters pertaining to its duties hereunder, and shall
        hold, itself, or by its duly designated agent, any and all of the
        Pledged Stock at any time received pursuant to the provisions of this
        Pledge Agreement and the Agreement for the ratable benefit of all the
        holders of the Notes;

             (c)  the Pledgee shall be under no obligation to take any action
        in respect of this Pledge Agreement or pursuant to this Pledge
        Agreement unless and until furnished with an indemnity satisfactory
        to it against any liability and expense in connection with the taking
        of such action; 

             (d)  the Pledgee shall have no duty to take any affirmative
        action under this Pledge Agreement unless directed to do so by the
        holders of a majority in aggregate principal amount of the Notes then
        outstanding, and shall in all cases be fully protected with the
        written instructions signed by or on behalf of the holders of a
        majority in aggregate principal amount of the Notes then outstanding,
        and such instrument and any action taken or not taken pursuant
        thereto, shall be binding upon the holders of the Notes;

             (e)  the Pledgee shall be entitled to rely, for all purposes of
        this Pledge Agreement, upon any request or notice delivered to it as
        provided herein, with respect to the matters stated therein and each
        such request or notice shall be a full warrant to the Pledgee for any
        action taken, suffered or omitted by it in reliance thereon;

             (f)  the Pledgee shall not be liable with respect to action
        lawfully taken or omitted to be taken by it in good faith, in
        accordance with the direction of the holders of a majority in
        aggregate principal amount of the Notes then outstanding, relating to
        the time, method and place of conducting any proceeding for any
        remedy available to the Pledgee or exercising any power conferred
        upon the Pledgee under the Agreement; and

             (g)  neither the Pledgee nor any of its directors, officers or
        employees shall be liable for any action taken or omitted to be taken
        by it or them under this Pledge Agreement, except for its or their
        own gross negligence or willful misconduct, nor shall the Pledgee be
        responsible for the validity, effectiveness or sufficiency of this
        Pledge Agreement or any of the Pledged Stock.

        2.   Ownership and Reqistration of the Pledged Stock.  The Pledgor
   represents and warrants that 

             (a)  the Pledged Stock is duly issued, fully paid and
        nonassessable (except for statutory provisions imposing liability for
        unpaid wages and salaries owing to employees);

             (b)  the Pledger owns the Pledged Stock free and clear of any
        security interest or charge, except the security interest granted
        under this Pledge Agreement; and

             (c)  the Pledgor has good right and lawful authority to grant a
        security interest in and deliver the Pledged Stock as provided in
        this Pledge Agreement.

   The foregoing representations and warranties shall also be true and
   correct at the time of any future delivery of Pledged Stock to the Pledgee
   or its agent.  The Pledgor will warrant and defend the Pledgor's title to
   the Pledged Stock, and the security interest therein created by this
   Pledge Agreement, against all claims of all persons, and will maintain and
   preserve such security interest.  Without the prior consent of the Pledgee
   and the holders of all the Notes then outstanding, the Pledgor will not
   transfer, create or otherwise dispose of any interest in, or grant any
   option with respect to, or pledge the Pledged Stock.

        3.   Votes, Consents, Waivers and Ratifications of the Pledged Stock. 
   Unless a Default or an Event of Default shall have occurred and be
   continuing, the Pledgor shall have the right to vote any and all of the
   Pledged Stock and to give consents, waivers and ratifications in respect
   of the Pledged Stock; provided, however, that no vote shall be cast, and
   no consent, waiver or ratification shall be given, which would be
   inconsistent with any of the provisions of the Notes, the Agreement, this
   Pledge Agreement or any other instrument or agreement referred to herein
   or therein, which would result in an amendment, modification or waiver of
   any of the provisions of the Certificate of Incorporation of A.O. Smith
   Corporation affecting or relating to the convertibility of any Class A
   Common Stock into Common Stock, or which would otherwise affect or relate
   to the convertibility of any Class A Common Stock into Common Stock.  Such
   right of the Pledgor to vote and give consents, waivers and ratifications
   shall cease if a Default or an Event of Default shall occur and be
   continuing.  Whenever a Default or an Event of Default has occurred and is
   continuing, the Pledgee may transfer into its name, or into the name of
   its nominee or nominees, any or all of the Pledged Stock and may vote any
   or all of the Pledged Stock (whether or not so transferred) and may give
   all consents, waivers and ratifications in respect thereof and may
   otherwise act with respect thereto as though it were the outright owner
   thereof, the Pledgor hereby irrevocably constituting and appointing the
   Pledgee as the proxy and attorney-in-fact of the Pledgor, with full power
   of substitution, to do so.

        4.   Dividends on Pledged Stock..  All cash dividends on the Pledged
   Stock shall be paid to the Pledgor, provided that no Default or Event of
   Default shall have occurred and be continuing.  All dividends (other than
   cash dividends) and all other distributions in respect of any of the
   Pledged Stock, whenever paid or made, and all cash dividends on the
   Pledged Stock paid after the occurrence and during the continuance of a
   Default or an Event of Default, shall be delivered to the Pledgee and held
   by it or its duly designated agent, subject to the security interest
   created by this Pledge Agreement.

        5.   Exchange of Pledged Stock.  The Pledgee may deliver the Pledged
   Stock or any part thereof to the issuer thereof or any other person for
   the purpose of making denominational exchanges or registrations,
   transfers, substitutions.or for any other purpose furthering the
   provisions of this Pledge Agreement or the Agreement, and the Pledged
   Stock or any part thereof so delivered, and any instruments issued as a
   result of or in connection with such delivery, shall be subject to the
   security interest created by this Pledge Agreement to the same extent as
   if no such delivery had been made.

        6.   Remedies in Case of an Event of Default.

             (a)   If an Event of Default shall have occurred and be
      continuing, the Pledgee shall have the following rights in respect
      of the Pledged Stock, in addition to any rights provided by law:

                  (i)  to vote the Pledged Stock; and

                  (ii) to convert the Pledged Stock which is Class A Common
         Stock into Pledged Stock which is Common Stock and/or to sell the
         Pledged Stock, upon at least 10 business days' prior notice to the
         Pledgor of the time and place of sale (which notice the Pledgor and
         the Pledgee agree is reasonable), for cash or upon credit or for
         future delivery, the Pledgor hereby waiving all rights, if any, of
         marshaling the Pledged Stock and any other security for the Notes,
         at the option and in the complete discretion of the Pledgee, either:

                       (A)  at public sale, including a sale at any broker's
             board or exchange; or

                       (B)  at private sale, in which event such notice shall
             also contain the terms of the proposed sale and the Pledgor
             shall have until the time of such proposed sale in which to
             procure a purchaser willing, ready and able to purchase the
             Pledged Stock on terms no less favorable to the Pledgee and the
             holders of the Notes, and if such a purchaser is so procured,
             the Pledgee shall sell the Pledged Stock to the purchaser so
             procured; and

                  (iii)     on behalf of the holders of the Notes, to bid for
             the Pledged Stock and, in lieu of paying cash therefor, to make
             settlement for the selling price by crediting ratably upon the
             outstanding principal of, and interest and prepayment premium,
             if any, on the Notes, and any other sums due under the
             Agreement, the net selling price after deducting all reasonable
             costs and expenses incurred in connection therewith.  The
             Pledgee, upon so acquiring the Pledged Stock, shall be entitled
             to hold, deal with and sell the same in any manner not
             prohibited by applicable laws.

   From time to time the Pledgee may, but shall not be obligated to, postpone
   the time and change the place of any proposed sale of any of the Pledged
   Stock which has been noticed as provided above, upon at least 5 days'
   prior notice to the Pledgor (which notice the Pledgor and the Pledgee
   agree is reasonable) of the new time and place of such sale whenever, in
   the judgment of the Pledgee, such postponement or change is necessary or
   appropriate in order that the provisions of this Pledge Agreement
   applicable to such sale may be fulfilled or in order to obtain more
   favorable conditions under which such sale may take place.  The method,
   manner, time, place and terms of any such sale of Pledged Stock must be
   commercially reasonable.

             (b)  In case of any sale by the Pledgee of the Pledged Stock on
        credit or for future delivery, which may be elected at the option and
        in the complete discretion of the Pledgee, the Pledged Stock so sold
        may be retained by the Pledgee until the selling price is paid by the
        purchaser, but the Pledgee shall incur no liability in case of
        failure of the purchaser to take up and pay for the Pledged Stock so
        sold.  In case of any such failure, such Pledged Stock so sold may be
        again similarly sold.  After deducting all reasonable costs and
        expenses of every kind, the Pledgee shall ratably apply the residue
        of the proceeds of any sale or sales to pay the principal of, and
        interest and prepayment premium, if any, on the Notes and any other
        sums due under the Agreement.  The excess, if any, shall be paid to
        the Pledgor, except as may otherwise be required by law.

             (c)  Neither failure nor delay on the part of the Pledgee to
        exercise any right, remedy, power or privilege provided for herein or
        by statute or at law or in equity shall operate as a waiver thereof,
        nor shall any single or partial exercise of any such right, remedy,
        power or privilege preclude any other or further exercise thereof or
        the exercise of any other right, remedy, power or privilege.

             (d)  The Pledgor recognizes that, in taking actions pursuant to
        this Paragraph 6, the Pledgee may be unable to effect a public sale
        of all or a part of the Pledged Stock by reason of certain
        requirements contained in the Securities Act of 1933, as amended, or
        any similar federal statute then in effect, and under the applicable
        securities or "blue sky" laws of one or more of the states (such Act,
        statute and laws being herein collectively called the "Securities
        Act"), but may, notwithstanding the rights and agreements set forth
        in Paragraph 7 below, deem it necessary or appropriate to resort to
        one or more private sales to a restricted group of purchasers who
        will be obligated to agree, among other things, to acquire such
        securities for their own account, for investment and not with a view
        to the distribution or sale thereof.  The Pledgor agrees,
        notwithstanding the rights and agreements set forth in Paragraph 7
        below, that such private sales so made may be at prices and on other
        terms less favorable to the seller than if such securities were sold
        at public sales, and the Pledgee has no obligation to delay sale of
        any such securities for the period of time necessary to permit the
        issuer of such securities, even if such issuer would agree, to
        register such securities for public sale under applicable securities
        laws.  The Pledgor agrees that private sales made under the foregoing
        circumstances shall be deemed to have been made in a commercially
        reasonable manner.

        7.   Reqistration of the Pledged Stock.  During the continuance of an
   Event of Default, the Pledgor, upon the written request of the Pledgee; 
   (i) will promptly use its best efforts to cause A. O. Smith Corporation to
   make all necessary filings (including the filing of one or more
   registration statements) under the Securities Acts relating to any of the
   Pledged Stock issued by it designated by the Pledgee in such request and
   irrespective of the number of shares of such corporation then pledged to
   the Pledgee, and the Pledgor will in good faith use its best efforts to
   cause such filings to become and remain effective;  (ii) will cause to be
   furnished to the Pledgee such number of copies as the Pledgee may request
   of each preliminary prospectus, prospectus and offering circular relating
   to the Pledged Stock issued by A.O. Smith Corporation, all of which shall
   comply with the requirements of the applicable securities law;  (iii) will
   promptly notify the Pledgee of the happening of any event (of which it has
   knowledge) as a result of which the then effective prospectus or circular
   includes an untrue statement of a material fact or omits to state a
   material fact necessary to make the statements therein not misleading in
   the light of the then existing circumstances and will cause the Pledgee to
   be furnished with such number of copies as the Pledgee may request of such
   supplement to or amendment of such prospectus or circular as is necessary
   to eliminate such untrue statement or supply such omission;  (iv) will
   agree in writing to indemnify and hold the Pledgee harmless against any
   claims and liabilities which the Pledgee may incur by reason of  (a) any
   failure on the part of the Pledgor or A. O. Smith Corporation to comply
   with the provisions of any applicable securities laws; or  (b) any untrue
   statement of a material fact or omission to state a material fact required
   to be stated in any registration statement, offering circular or
   prospectus relating to the Pledged Stock issued by A.O. Smith Corporation,
   or necessary to make the statements therein not misleading, except insofar
   as such claims or liabilities are caused by any such untrue statement or
   omission based upon, or in conformity with, information furnished in
   writing to the Pledgor or such corporation by the Pledgee;  (v) will do
   any and all other acts and things which may be necessary or advisable to
   enable the Pledgee to consummate any proposed sale or other disposition of
   any of the Pledged Stock pursuant to this Pledge Agreement; and  (vi) will
   bear all costs and expenses of carrying out its obligations under this
   Paragraph 7.

        8.   Obligations Not Affected.  The obligations of the Pledgor under
   this Pledge Agreement shall remain in full force and effect without regard
   to, and shall not be impaired or affected by:  (i) any amendment or
   modification of or addition or supplement to the Notes, the Agreement or
   any other instrument securing the Notes; (ii) any exercise or non-
   exercise by the Pledgee of any right, remedy, power or privilege under or
   in respect of this Pledge Agreement, the Notes, or any assignment or
   transfer thereof or any waiver of any such right, remedy, power or
   privilege (iii) except to the extent therein specified, any waiver,
   termination, consent, extension, indulgence or other action or inaction in
   respect of this Pledge Agreement, the Agreement, the Notes or any other
   instrument securing the Notes; (iv) any bankruptcy, insolvency,
   reorganization, arrangement, readjustment, composition, liquidation or the
   like, of the Pledgor or A. O. Smith Corporation; or (v) any limitation on
   the liability or obligations under this Pledge Agreement of the Pledgor or
   A. O. Smith Corporation which may now or hereafter be imposed by any
   statute, regulation or rule of law or any invalidity or unenforceability,
   in whole or in part, of this Pledge Agreement or any provision hereof, or
   for any other reason, whether or not the Pledgor or A. O. Smith
   Corporation (as the case may be) shall have notice or knowledge of any of
   the foregoing.

        9.   Accidental Loss of Pledged Stock.  So long as the Pledged Stock
   is being held on behalf of the Pledgee by an agent designated by it for
   that purpose as described in Paragraph 1, the risk of accidental loss of
   or damage to the Pledged Stock shall be on the Pledgor to the extent of
   any deficiency in any effective insurance coverage.  In the event that the
   Pledged Stock is at any time being held by the Pledgee directly rather
   than by its designated agent, or if the agent designed by the Pledgee to
   hold the Pledged Stock is not a bank or trust company having total capital
   and surplus of not less than $100,000,000 at the time it is so designated
   as agent to hold the Pledged Stock, then the Pledgee agrees to indemnify
   the Pledgor against any accidental loss of or damage to the Pledged Stock
   to the extent of any deficiency in any effective insurance coverage.

        10.  Notices.  All notices, consents and other communications
   hereunder shall be in writing and shall either be delivered, or shall be
   sent by certified or registered mail, postage prepaid and addressed  (i)
   if to the Pledgor, Post Office Box 23976, Milwaukee, Wisconsin 53223-0976,
   with a copy to Jere D. McGaffey, Foley & Lardner, 777 E. Wisconsin Avenue,
   Milwaukee, Wisconsin 53202, or  (ii) if to the Pledgee, 4321 North Ballard
   Road, Appleton, Wisconsin 54919, Attention: Investment Department, or as
   to either party, at such other address as shall be designated by such
   party by notice to the other party.  The addresses for the holders of the
   Notes for the purposes of this Pledge Agreement shall be their respective
   addresses for notices specified in the register for the Notes maintained
   by the Pledgor pursuant to Paragraph 11E of the Agreement.  All notices
   shall be deemed to have been given either at the time of the delivery
   thereof to any officer or employee of the person entitled to receive such
   notice at the address of such person for purposes of this Paragraph 10, or 
   at the completion of the third full day following the time of such mailing
   thereof to such address, as the case may be.

        11.  Amendment, Succession and Headings.  This Pledge Agreement may
   not be changed, modified or discharged orally, nor may any waivers or
   consents be given orally hereunder, and every such change, modification,
   discharge, waiver or consent shall be in writing, duly signed by or on
   behalf of the Pledgor and the Pledgee with the written consent of a
   majority in aggregate principal amount of the Notes then outstanding. 
   This Pledge Agreement shall be binding upon the Pledgor, the Pledgee and
   their respective successors and assigns, and shall inure to the benefit of
   each holder of a Note.  The captions in this Pledge Agreement are for
   convenience reference only and shall not define or limit the provisions
   hereof.

        12.  Return of Pledged Stock; Termination. 

             (a)  The Pledgee shall forthwith assign, transfer and deliver,
   without recourse and against receipt, such of the Pledged Stock (and
   property received in respect thereof) as may be required pursuant to the
   Agreement and which has not theretofore been returned to the Pledgor, sold
   or otherwise applied pursuant to the provisions of this Pledge Agreement;
   this Pledge Agreement shall continue as to any remaining Pledged Stock. 
   Any such assignment, transfer and delivery shall not affect the
   obligations of the Pledgor to subsequently deliver Pledged Stock as
   provided in the Agreement.

             (b)  Upon payment in full of the Notes and the due performance
   of all obligations of the Pledgor under this Pledge Agreement and under
   the Agreement, the Pledgee shall forthwith assign, transfer and deliver,
   without recourse and against receipt, such of the Pledged Stock (and any
   property received in respect thereof) as has not theretofore been sold or
   otherwise applied pursuant to the provisions of this Pledge Agreement to
   or upon the order of the Pledgor, whereupon this Agreement shall
   terminate.

             (c)  The Pledgee shall not be required, however, to assign,
   transfer and deliver any of the Pledged Stock as aforesaid unless and
   until the Pledgee shall have received a favorable opinion of counsel or
   other evidence, satisfactory to the Pledgee, as to the payment of all
   transfer taxes and similar governmental charges, if any, payable in
   connection with such assignment, transfer and delivery.

        13.  Holders of Notes.  The Pledgee may deem and treat the person in
   whose name a Note is registered as the holder and owner thereof for all
   purposes.  The Pledgor shall, upon the request of the Pledgee, furnish to
   the Pledgee a copy of the register for the Notes which is maintained by
   the Pledgor pursuant to Paragraph 12E of the Agreement.

        14.  Governing Law.  This Agreement shall be deemed to be made under
   and shall be governed by the laws of the State of Wisconsin.

   IN WITNESS WHEREOF, the parties have caused this Pledge Agreement to be
   executed by their respective officers thereunto duly authorized and, their
   respective corporate seals to be duly affixed hereto as of the date first
   set forth above.

                                      SMITH INVESTMENT COMPANY
        (Corporate Seal)              Pledgor


   Attest:                            By  /s/ Arthur O. Smith
                                          Arthur O. Smith
   /s/ Wesley A. Ulrich                   Chairman, President & Chief
   Wesley A. Ulrich                       Executive Officer
   Secretary & Treasurer


                                      AID ASSOCIATION FOR LUTHERANS
                                      Pledgee


                                      By  /s/ R. Jerry Scheel
                                          R. Jerry Scheel
                                          Second Vice President - 
                                          Securities


                                      By  /s/ James Abitz
                                          James Abitz
                                          Vice President - Securities