ELECTROGLAS INC
SC 13G, 1997-02-13
SPECIAL INDUSTRY MACHINERY, NEC
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                                (Amendment No.)


                                Electroglas, Inc.
                                (Name of issuer)

                      Common Stock, $.01 par value per share
                         (Title of class of securities)

                                    285324109
                                 (CUSIP number)


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 the
disclosures provided in a prior cover page.

The information required in 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).

<PAGE>



- - --------------------------------------------------------------------------------
  1      NAME OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         EQSF Advisers, Inc.
         (EIN 13-3354359)
- - --------------------------------------------------------------------------------
  2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  [   ]
                                                              (b)  [   ]
- - --------------------------------------------------------------------------------
  3      SEC USE ONLY

- - --------------------------------------------------------------------------------
  4      CITIZENSHIP OR PLACE OF ORGANIZATION

                     New York Corporation

- - --------------------------------------------------------------------------------
                                 5      SOLE VOTING POWER
          NUMBER OF
            SHARES                               1,070,000
                               -------------------------------------------------
         BENEFICIALLY            6      SHARED VOTING POWER
           OWNED BY
                                ------------------------------------------------
             EACH                7      SOLE DISPOSITIVE POWER
          REPORTING
            PERSON                               1,070,000
                               -------------------------------------------------
             WITH               8       SHARED DISPOSITIVE POWER

- - --------------------------------------------------------------------------------
 9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  1,070,000
- - --------------------------------------------------------------------------------
 10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
         CERTAIN SHARES*                                      [    ]

- - --------------------------------------------------------------------------------
 11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
                  5.89%
- - --------------------------------------------------------------------------------
 12      TYPE OF REPORTING PERSON*

                  IA
- - --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
- - --------------------------------------------------------------------------------
  1      NAME OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

                  Martin J. Whitman
                  (###-##-####)
- - --------------------------------------------------------------------------------
  2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a)   [   ]
                                                                   (b)   [   ]
- - --------------------------------------------------------------------------------
  3      SEC USE ONLY

- - --------------------------------------------------------------------------------
  4      CITIZENSHIP OR PLACE OF ORGANIZATION

                  USA
- - --------------------------------------------------------------------------------
                                 5      SOLE VOTING POWER

          NUMBER OF                              None  (See Item 4)
                               -------------------------------------------------
                                 6      SHARED VOTING POWER
            SHARES
         BENEFICIALLY                            None
           OWNED BY            -------------------------------------------------
             EACH                7      SOLE DISPOSITIVE POWER

          REPORTING                              None  (See Item 4)
                               -------------------------------------------------
         PERSON WITH            8       SHARED DISPOSITIVE POWER

                                                 None
- - --------------------------------------------------------------------------------
 9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  -0-    (See Item 4)
- - --------------------------------------------------------------------------------
 10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
         CERTAIN SHARES*                                                   [  ]
- - --------------------------------------------------------------------------------
 11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                  -0-
- - --------------------------------------------------------------------------------
 12      TYPE OF REPORTING PERSON*

                  IN
- - --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Item 1.
         (a)      Name of Issuer:
                  Electroglas, Inc. (the "Issuer").

         (b)      Address of Issuer's Principal Executive Offices or, if None,
                  Residence:
                  2901 Coranado Drive, Santa Clara, CA 95954
Item 2.
         (a)      Name of Person Filing:
                  This schedule is being jointly  filed by EQSF  Advisers,  Inc.
("EQSF")  and  Martin  J.  Whitman,  the  Chief  Executive  Officer  of EQSF and
controlling   person  of  EQSF.  (EQSF  and  Martin  J.  Whitman  are  sometimes
collectively referred to hereinafter as "Filer").  Attached hereto as an exhibit
is a copy of the  joint  schedule  13G  filing  agreement  among  the  reporting
persons.

         (b)      Address of Principal Business Office:
                  The address of the  principal  executive  office of EQSF and 
                  Mr.  Whitman is: 767 Third  Avenue,  New York, NY 10017-2023.

         (c)      Citizenship:
                  The  citizenship  or  place  of  organization  of  each of the
reporting persons is as follows:

                  EQSF:
                  New York State Corporation.

                  Martin J. Whitman:
                  United States Citizen.

         (d)      Title of Class of Securities:
                  Common Stock, $.01 par value per share.

         (e)      CUSIP Number:
                  285324109

Item 3. If this  statement  is  being  filed  pursuant  to  Rules  13d-1(b),  or
13d-2(b), check whether the person filing is a:
<PAGE>

         (e)      Investment Adviser registered under section 203 of the 
Investment Advisers Act of 1940 (EQSF).

Item 4.  Ownership.
         (a)&(b)  EQSF beneficially owns 1,070,000 shares, or 5.89% of the class
of securities of the issuer.

         (c)      (i) EQSF: 1,070,000

                  (ii) Not applicable.

                  (iii) EQSF: 1,070,000

                  (iv) Not applicable.

         Mr. Whitman disclaims beneficial ownership of all such shares.

Item 5.  Ownership of Five Percent or Less of a Class.
         Not applicable.


Item 6.  Ownership of More than Five Percent on Behalf of Another Person.
         Third Avenue Value Fund, Inc., an investment  company  registered under
         the Investment Company Act of 1940, has the right to receive dividends
         from, and the proceeds from the sale of, such shares.

Item 7.  Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company. 
         Not Applicable.

Item 8.  Identification and Classification of Members of the Group.
         Not applicable.

Item 9.  Notice of Dissolution of Group.
         Not applicable.

<PAGE>

Item 10. Certification.
         By signing  below I certify  that,  to the best of my knowledge and 
belief, the  securities  referred  to above  were  acquired  in the  ordinary  
course of business  and were not acquired for the purpose of and do not have the
effect of changing or  influencing  the control of the issuer of such securities
and were not acquired in connection  with or as a participant in any transaction
having such purposes or effect.  

                                   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.

                                                               February 13, 1997
                                                                          (Date)




                                                     EQSF ADVISERS, INC.

                                                     By:/s/   MARTIN J. WHITMAN
                                                     Martin J. Whitman
                                                     Chairman, President and
                                                     Chief Executive Officer


                                                      /s/      MARTIN J. WHITMAN
                                                     Martin J. Whitman






                                                                       Exhibit 1

                             JOINT FILING AGREEMENT


     In  accordance  with Rule 13d-1 (f) under the  Securities  Exchange  Act of
1934,  as amended,  the  undersigned  hereby  agree to the joint filing with all
other Reporting Entities (as such term is defined in the Schedule 13G) on behalf
of each of them of a statement on Schedule 13G  (including  amendments  thereto)
with  respect to the Common  Stock,  $.01 par value per share,  of  Electroglas,
Inc.,  and that this  Agreement be included as an Exhibit to such joint  filing.
This Agreement may be executed in any number of counterparts  all of which taken
together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this 13th
day of February, 1997.


                                                             EQSF ADVISERS, INC.

                                                     By:/s/   MARTIN J. WHITMAN
                                                     Martin J. Whitman
                                                     Chairman, President and
                                                     Chief Executive Officer



                                                     /s/      MARTIN J. WHITMAN
                                                     Martin J. Whitman



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