US1839734A - Jack stand - Google Patents

Description

Jan. 5, 1932.

D. BEVILACQUA JACK STAND Filed March 18, 1931 2 Sheets-Sheet- INVENTOR nommcx azvyucom BY mme ATTORNEY Jan. 5, 1932. D. BEVILACQUA 3 JACK STAND Fileafuarcn 18. 19.51 2 Sheets-Sheet 2 7 F .W 1 v V a 3 w INVENTOR DOMINICK BEVILACQUA 2)\ M v ATTORNEY the base, the support 21 beingapproximately Patented Jan. 5, 1932 ED .QFFICE DGMINICK BEVILA QUA, or LQNG m m CITY, new YORK, nssreivon TO I. MILLER &

- sons, INCORPORATED, 'Aoonronenon on new YORK- JACK smann Application filed Mar u s, 1931. serial No'. 523,409.

This invention relates to the shoe machine art and deals more. specifically witha ack stand. Y

In certain ope'rationsduring the processes of shoe manufacture, and particularly in the manufactureof turn shoes, theshoe having a last therein is placed upon ajacl: to hold the same firmly whiletheshoemaker works on the shoe. y v s It is therefore an objectof this invention to providea jackstand uponwhich a jack may be removably'mounted, 'whichrstand is simple and cheap to construct,'wl1ile the same time giving a rigid support for the ]1Cl. Further, it is an object of this invention to provide a ack stand which gives the greatest freedom to the shoemaker in operating upon the shoe supported thereon.

And finally, it is an object of this invention generally to improve the jack stand art and to render the same more durable and efficient These and other objects of'the invention will be readily apparent to those skilled in the art from the following description taken 1 in connection with the accompanying drawings, in which: I Fig. 1 is a side elevation of a stand constructed in accordance with the present invention;

Fig. 2 is a perspective View of the device shown in Fig. l, the ack being removed; and. Fig.3 is a perspective view vof a modification. 7

Referring in detail to Figs. 1 and 2, the stand 10 is seen to comprise a base 11 having holes 12 therein, wherebythe base may be screwed or bolted down. The base also has a pair of rear\ 'ardly extending members 13 and a cross support 15 in which is pivoted at 16 the foot treadle '17 having the arm v18 and foot portion, 19. A standard or frame 20 having the supports 21 and 22 is fixed to two-thirds of'the length of the support 22 and the two being joined by the angularly disposed cross strut 23 asshown. A bracket plate 25 is bolted to the support 22. The plate 25 is provided with holes 26 through which the jack 30 is adapted to be bolted. It will be understood that the several holes he'moves the treadle to the left, thus causing;

provided in the bracketmay be, positioned as desired, whereby the jack may be fixed on the stand 5 in several different, positions and adjustments as desired to suit the needs of the shoemaker. A table 31 is fixed to the support 22 and hasat its rear end a plate 32 which may be bolted to the shoemakers bench '(notshown). The table 31 is L-shape and is constructed preferably of the same-material as the supports 21*and, It will be noted that the freedom permittedthe workman in operating upon a shoe held on this device is very great, by virtue of the space provided by the foreshortening of the support 21, as well' by rvirtuei of the fact that the table is Lgshaped and thus provides for considerable. space around the jack. A coiled spring is connected between the treadlearm '18 and the table 31 for the purpose of holding thetreadle normally; in its uppermost position. An important feature ofthe spring 35 is that it-isjoined to the right-side of the table 31, so that it is disposed atan angle with 1 respect to the horizontal plane and thereby not only urges the treadlel'? upwardly but also to the right. A plate 40 having ratchet teeth d1; therein is mounted between the supports 21 and 22. The plate40. hasia slot 43 through which thetreadle, arm 18 extends,and the slot is of sufiicient width so that the arm .18 may be moved upwardly under tension of the spring-35 and downwardly un e1 foot pressure," without engaging the ratchet teetl Byvirtue of the fact that the spring 35 isangularly disposed, as described above, the arm 18 normally is drawn tothe right by a component of the force of the spring which depends upon the cosineofthe; angle of'the spring 35 withrespect to the iorizontal. 7 When the operator wishes-to de press the treadle and leave it'in such a .posi tion, he hears down on the foot-portion l and when the positiont'o be held is reachedg the arm 1 8 to-erigage-a ratchet tooth, 1

; .lniorderto holdtheshoe firmly'onthe jack,

a heavy leathlr saddle 45 is provided and-the rop'e etiis to opposite'endsthereof? The 11efl .pa s. t oug eye? ,4? w ic s jaile te ei ledi pr gf.tfiw-w e ini 155 sesame turn pivotally connected to a link 49. The link 49 is pivotally connected to the .arm 18 in any suitable manner. It will be seen that by means of the treadle 17 and the saddle 45 the shoe may be held firmly on the jack. The details of the structure of the jack have been omitted because any'jack of the prior art is suitable for use in this invention, it being merely necessary that the same be provided with bolts and nuts for attachment'to the bracket plate 25. V

The parts of the jack stand constructed in accordance with this invention are preferably made of fabricated steel welded, riveted, or bolted together. However, the stand may be cast of iron or steel.

Referring now to Fig. 3, this modification of the invention differs from that of Figs. 1 and 2 only in that the support 121' is of full length and the table 131 is attached to two extensions 121a which extend at right angles to the supports 121 and 122. The jack 30 is fixed to the table by bolts (not shown) or any other suitable means. Except for these dif-' ferences the description of Figs. 1 and 2 ap-- plies also to Fig. 3.

' Having thus described my invention, I claim'r' 1. A jack stand comprising a base member, a frame comprising two vertical supports, one of which is longer than the other, an L-shaped table joined to said longer support, and means to support a jack on said frame.

2. A jack stand comprising a basememher, two Vertical supports, one of which is shorter than the other, an L-shaped table joined to said other support, means to support a j ack, a pivotally mounted foot treadle, means to engage the work on said jack, means connecting said last mentioned means and said treadle, and means for locking said treadlein place.

w 3. A jack stand comprising a base member, two-vertical supports, one of which is shorter than the other, an L-shaped table joined to said other support, means to support a jack, a pivotally mounted foot treadle, spring means normally holding said treadle upward, means to engage the work onsaid ack, means connecting said last mentioned means and said treadle, and means for locking said treadle in place. 4

4. A jack stand comprising a base memher, two vertical supports, one of which is shorter than the other, an L-shapedtable joined to saidother support, means to sup port a jack, a pivotally mounted foot't-readle,

shorter than the other, an L-shaped table joined to said other support, means to sup port a jack, a pivotally'mounted foot treadle, means to engage the work on said jack, spring means connecting said last mentioned means and "said treadle, and means for locking-said treadle in place. 7

6. A jack stand comprising a base member, two verticalsupports, one of which is shorter than the other, an L shaped table joined to said other support, means to support a jack, a pivotally mounted foot treadle, spring means normally holding said treadle upward,v means to engage the work on said jack, spring means connecting said last mentioned means and said treadle, and means for locking said treadle in place.

7. A jack stand comprising a base member, two vertical supports, one of which is shorter than the other, an L-shaped table joined to said other support, means to support a jack, a pivotally mounted foot treadle, spring means normally urging said treadle upward and to one side, means to engage the workon said ack, spring means connecting said last mentioned means and said treadle, and means for locking saidtreadle in place.

DOMINICKBEVILACQUA.

spring means normally urging said treadle' .upward and to oneside', meansto engage the Work on said jack, meansconnectingsaid last mentionedme'ansand said treadle, and-means for locking saidtreadle in place.

5. A jack stand [comprising a base =mem her; two 'verticalisupports, one of which, is

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