US1484322A - Sole-positioning device for shoe-last jacks - Google Patents

Description

Feb. 19 19 24.

F. cHArrAuNEuF SOLE POSITIONING DEVICE FOR SHOE LAST JACKS Filed April 15 Patented Feb. 19, 1924.

narrso stares PA'EENT OFFICE.

FRANK CHATEAUNEUF, OF LYNN, IKASSACHUSETTS.

SOLE-POSITIONING- IDEVIGE FOB SHOE-LAST JACKS.

Application filed April 15, 1921. Serial-No. 461,534.

To all whom it may concern Be it known that I FRANK CHATEAU- NEUF, a citizen of the United States, and a resident of Lynn, county of Essex, State of h'lassachusetts, have invented an Improvement in Sole-Positioning Devices for Shoe-Last Jacks, of which the following is a specification.

In the manufacture of turned shoes the soles are channeled to form an uprightl shoulder adjacent the edge and a margin which extends to the edge, the margin being cut to various angles. When the sole is tacked on to the last, preliminary to the lasting operation, it should be positioned so that this margin portion projects be yond the side of the last, with the shoulder flush with the side. It is customary, particularly when the margin iscut so as to form a thick edge, to mold or break down the margin portion so that, when the sole is in position on the last the margin portion extends obliquely downward from the last bottom, assuming that the last is inverted.

As soles are usually bundled in stacks after channeling and molding, the bent down margin is almost invariably bent up toits former position, particularly about the toe portion. r

' In tacking the sole to the last, preparatory to lasting, it frequently occurs that the sole is not positioned thereon so that the margin portion only projects beyond the side of the last, and if, for example, the sole should be tacked on in such a position that its edge is flush with the side of the last, so that its margin portion would be supported flat with its bottom surface, -it would be practically impossible to' form a satisfactory sole and upper-attaching seam. Workmen are also frequently obliged to remove soles after they have been tacked on and then tack them on again in order that they may be correctly positioned, and as the sole margin will have almost invariably become turned up even with the last bottom, this portion should be hammered or pressed down against the side of the last before the shoe is lasted.

The object of my invention is to provide an attachment for an ordinary lastingjack which will enable the workman to position the sole on the last bottom. quickly and accurately andwill hold the sole in position until it has been secured thereto by tacks,

and which will enable the workman, without delaying his work of tacking on the sole, to press down the sole margin about the toe portion, at which point it is particularly desirable and necessary that the angle be tween the'surface of the margin and the shoulder be as wide as possible' I accomplish this object by means of the embodiment of my invention hereinafter described and illustrated in the accompanying drawing in which:

i Fig. 1 is a side elevation of said embodiment, showing the parts in initial position.

Figs. 2 and 3 are similar views'sh o-wing an intermediate and a final position thereof.

- Fig. at is a plan View thereof. 7

Figs. 5 and 6 are detail sectional views at'line arr-b of Fig. 4, and

Fig. 7 is a detail sectional view at line c(Z of Fig. 4.

As thedevice is adapted to be associated with an ordinary form of last jack, 'or sup port, by substituting a new toe rest, the support is merely indicated in the drawing by the usual last pin 1, the forepart rest supporting arm 2, and the forepart' 0r toe rest 3.

According to my invention the toe-rest 3 has a lug 3 formed integrally therewith at its rear side, and said lug has a vertical bore therein in wh1ch a hollow shaft or sleeve 4 is mounted to move rotatably and to slide vertically. A stop nut 5 is threaded on the lower end of said sleeve and a horizontally extending bracket 6 is mounted on the upper" end thereof, said sleeve and bracket being supported and said nut being normally held against the lower side of said lug by a stout coil-spring 7 ,which is arranged on the sleeve between the upper side of the lug and the under side of the bracket. The bracket 6 extends horizontally away from the rest and has a pair of vertical ears 8 on its end,,between which a bell-crank lever 9 is mounted on a pivot 10, so arranged that one, a m 9 extends upwardly and the other arm 9 horizontally from the pivot. A treadle-rod 11 is pivoted to the end of the -9" and is extended downward thru the sleeve 4:. and is connected by a swivel joint to a trea dle 12. "A coil spring 13 isatta'ched to the end of the arm 9 and from the vertical 8 and the arm 9 is lifted from the horizontal. A last gage 14, having a last-engaging face 14 is mounted on a pivot- 15 in the end of arm 9 and has an arm 16 arranged to swing into engagement with the arm 9*. A coil spring 17 is attached at one-end to said gage and, at the opposite end, to the arm 9 adjacent the end thereof, and normally acts to hold the arm 16 against the arm 9 as in Fig. 1. A sole gage 18 is secured by a screw 19, which passes thru a wide slot 18 in the gage, to a fiat surface formed on the upper end of the gage ll and said sole gage is formed to provide a sole-edge-engaging face 18 on its front side, and a forwardly projecting lug 20, directly thereover, having its under surface at right'angles to the face 18".

A pair of centering levers 21 are pivoted, at intermediate points therein, in cars 22, on opposite sides of the sole-gage 18, to swing in a plane parallel to the upper surface of the last gage 14, and coil springs 23 are interposed between the opposite rear ends of sail levers and the opposite sides of the solegage 18, said springs being arranged to press the front ends of said levers towards each other, so that they are normally held against the sides of the gage 18. Projections 2% are formed on the upper sides of said levers 21 in front of their pivots, and I lugs 25 are formed on the adjacent sides of said PIOJGCtlODS- Sole-edge-engagrng faces 24: are provided on the ad acent sides of "said projections beneath said lugs 25, and

last-engaging faces 21 are provided onthe adjacent sides of said levers beneath said lugs, each face 24 forming the bottom of a recess between the lug 25 and the upper side of a lever 21, the depth of which corresponds to the width of the sole margin. The front end portions of the levers 21 are diver-gently extended, the adjacent sides thereof being continuous with the faces 21 A stop screw 27 is threaded into the upper side of the bracket 6', in such a position that its head will be engaged by the lever arm 9 when swung downward.

The manner in which the device is em ployed is as follows:

A. last, as 0:, is placed in position on the j ack pin and-toe rest, at which time the solepositioning devices will be held in the posi-' tion of Fig. 1, in which position the front end portions of levers 21 will be surliciently withdrawn from the toe rest to permit the last to'be swungon the pin 1 into position on the forepart. hen the last is in its normal position on the jack, the bracket 6 and parts supported thereby will be swung horizontally about the axial center of the sleeve l until the middle of the gage 18 is positioned approximately in line with the middle of the last forepart, and then the treadle is depressed, causing the lever 9 to be swung forward, carrying the face 14 of the last gage into engagement with the toe-end of the last, as shown in Fig. 2, and causing the centering levers 21 to slide along on the sides of the last and be-spread apart thereby, so that they will engage the last directly beneath the lugs 25,,as shown in Fig. 5. By this movement the lever arm 9 will be engaged with the stop screw 27, and the last gage will be pressed against the last with sufficient force, ordinarily, to stretch the spring 17 slightly and lift the arm 16 out of engagement with the arm 9, as shown in Fig.

'l he operator then places a sole, as y, on the last so that its extreme edge will engage the face 18 at its end, and the faces 24 at each side. In this position, the sole will be accurately centered or positioned on the last, so that the shoulder of the sole will be flush with. the sides of'the last at its sides and toe end, as shown in Figs. 5 and 7. While held in this position the operator drives the necessary tacks thru the sole into the last, to secure the sole in position thereon.

lVhile the margin of the sole, if it is a turn sole, will usually have been moulded or bent down or away from its flesh side, before it is tacked on, as before stated, almost invariably the toe portion thereof becomes bent back again, so that the operator, as he drives the last tack for holding the sole in position, further depresses the treadle, and, as the arm 9 has already been swung against the stop bolt 27, it cannot be swung down any farther, so thatfurther pressure on the bolt will cause the bracket 6 to be depressed against the action of the spring 7 and the sleeve 4 to slide down in the lug 3 This movement causes the parts supported on the lever 9 to be drawn down also, causin the lug 20, on the sole gage, and lugs 25 on the centering levers, to be presseddown on the sole margin, so that it is turned down a ainst the side of the sole, as indicated in lsigs. 3 and 6, by the time the parts have been drawn down to their fullest extent. The extent of pressure on the sole margin is determined by thestrength of the spring 17, which is adapted to yield before undue strain is placed on the sole margin. The sole and last will then be ready forthe lasting operation, and will then be removed from the jack and the treadle will be released permitting the parts to return to the position of Fig. 1.

It is to be noted that the tension of the spring 13 is less than that of the spring 7 and its only function is to swing the lever 9, and the parts thereon. away from the toe rest of the jack. The tension of the spring 7 of the treadle, thru the engagement with the bolt 27 by arm 9*, while the operator positions and tacks on the sole.

To provide for lasts which are so shaped that the toe end is abnormally turned away from the middle line of the last, the slot 18 in the sole gage 18 is extended transversely to permit lateral adjustment thereof, but ordinarily the horizontal swinging motion of the bracket 6 about the axis of the sleeve or shaft 4: is sufiicient to compensate not only for the variation between rights and lefts, as

indicated by the dotted line positions of Fig. 4, but also for the extreme variations of abnormal lasts. However, the last may be swung, to some extent, on the last pin as a center, to one side or the other on the fore-- part rest. That is, the levers 21 act to position the last on the rest, relatively to the gage 14, so that the sole edge engaging faces which are carried by and move with the gage and levers 21 will be held in the correct solepositioning relation with the last.

If vertical adjustment ofthe last and soleongaging faces becomes necessary, on account of variation in the shapes of the lasts, the bracket 6 may be raised or lowered by merely unscrewing or screwing-the nut 5 and the extent of the horizontal movement of these faces towards the last, by the initial movement of the treadle, may be varied by adjusting the bolt 27 up or down.

While the construction herein shown may be variously modified, this construction is the most desirable of which I am at present aware, and, while the device is shown as particularly adapted for use in connection with the operation of tacking on soles of turned shoes, it may be used to advantage in tacking on welt or McKay inner soles, or McKay outer soles, although, for these purposes, the sole-margin bending means would be unnecessary.

I claim:

1. In combination with a support adapted to hold a last in inverted position, last-engaging devices for the opposite sides of the last, adjacent its toe-end, mounted to swing about a vertical axis into position in front of said end and to swing about a horizontal axis, longitudinally of the last, into last-engaging position, and sole-edge engaging means movable with'said engaging devices into sole-positioning relation with the last. 2. In combination with a support for holding a last in inverted position, a gage having a face for engaging the toe-end of a last on said support and mounted for movement transversely of the last into position opposite said end and longitudinally thereof to engage said face with said end, last-engaging arms mounted on said gage at opposite ends of said face and movable towards-and from each other to engage opposite sides of the last, and sole-engaging means mounted posed axis, a last-gage mounted on said and. movable with said gage and arms into sole-positioning relation with the last.

3. In combination with asupport for hold-f ing a last ininverted position, a gagehaving a face for engagment with the toe end of a last on said support and mountedfor movement in a curved path about the toe end of the last, and also mounted for movement in a direction longitudinally of the last, to engage said face therewith, apair of arms pivotally mounted on said gage, at opposite ends of sa1d face and having faces on their adjacent sides for engagement with the opposite sides of the last simultaneously with the engagement of the face of said gage therewith, said gage and said arms each having sole-engaging faces thereon adjacent and above the last-engaging faces thereof and arranged to position a sole on the last engaged by said last-engaging faces.

4. In combination with a support for holding a last in inverted position, a bracket mounted at the fore-part-supporting end of said support, to swing about a vertically dis bracket to swing about a horizontally disposed axis, last-engaging arms mounted on said gage at opposite sides thereof and movable to engage opposite sides of a last on said support while its toe end is engaged by said last-gage, and sole-edge engaging means mounted on and movable with said gage and arms into sole-positioning relation with the last.

5. In combination with a support for holding a last in inverted, position, a vertically disposed pivot shaft mounted at the fore part supporting end of said support, a bracket arm on said shaft arranged to extend away from said support, a lever horizontally 1 5 pivoted in said bracket and having an up wardly extending arm, last-engaging and sole-positioning devicesmounted on said upwardly extending arm, and operating means for swinging said lever to carry said devices 1 into positioning relation with a last on said support. 7

6; In combination with a support for holding a last in inverted position, a vertically disposed pivot shaft mounted at the forepart supporting end of said support, a bracket-arm on said shaft arranged to extend away from said support, a lever horizontally pivoted in said bracket and having an up wardly extending arm, last engaging and sole-positioning devices pivotally mounted at the end of said upwardly extending arm and normally actuated to be swung away from a last on said support, and operating means for swinging said lever to move said 1 devices into positioning relation with the last.

7. In combination with a support for holding a last in inverted position, a vertically disposed pivot shaft mounted at the 30 fore-part supporting end of said support, a bracket-arm on said shaft arranged to extend away from said support, a lever horizontally pivoted in said bracket and having an upwardly extending arm, last-engaging and sole-positioning devices pivotally mounted at the end of said upwardly ex tending arm, means normally acting to swing said devices away from a last on said support, operating means for moving said lever to swing said devices into positioning relation with the last, and a spring for holding said devices in predetermined relation with said lever arranged to hold said lastpositioning devices in yielding engagement with the last. r

8. In combination with a support for holding a last in inverted position, lastengaging. devices mounted adjacent the forepart supporting end of said support and having sole-edge-engaging means for so positioning a sole on the last, while engaged by said devices, that its margin portion extends beyond the sides of the last, margin-engaging means arranged to extend over the margin portion of the sole when thus positioned and means to move said engaging means downwardly to bend down said margin portion.

9. In combination with a support for holding a last in inverted position, lastengaging devices mounted adjacent the forepart supporting end of said support and horizontally movable to engage the sides of a last on said support, sole-positioning means mounted on and movable with said devices and having sole-edge engaging faces arranged to be held at a distance from the edge of'the last, when in positioning relation therewith, to position the sole with its margin-portion projecting beyond the sides of the last, margin-engaging means extending from the faces of said sole-positioning means and means for moving said devices downwardly to bend the sole margin correspondingly.

10. In combination with a support for holding a last in inverted'position, a gage mounted at the forepart supporting end thereof, and having a last-engaging face,

a sole-edge-engaging face arranged to be held at a distance from the edge of the last, when the side thereof is engaged by said last-engaging face, to position a sole on the last with its margin portion extending beyond the side of the last, a projection on said gage above said sole-edge-engaging face arranged to extend over said projecting margin portion, and means to move said gage horizontally into last-engaging position and to move it downwardly from said position, to bend down the sole margin.

11. In combination with a support for holding a last'in inverted position, a gage mounted at the forepart supporting end thereof and having a last-engaging face, a sole-pos1t1on1ng face and a sole-marglnengaging projection, an operating device and means controlled thereby for moving said gage into sole positioning relation with the last andfor moving said gage downwardly, to bend down the margin portion of the sole. I

'12. In combination with a support for holding a last in inverted position, a gage mounted at the forepart supporting end thereof and having a lastengaging face, a sole-positioning face and a sole-'margin-engaging projection and 'inanually operated devices movable in one direction to move said gage successively horizontally into solepositioning relation with the last and then downwardly, to bend down the margin portion of the sole.

13. In combination with a support for holding a last in inverted position, a gage mounted at the forepart supporting end thereof and having a last-engaging face, a sole-positioning face and a sole-margin-engaging projection, a treadle and means operated thereby, when it is depressed, to move said gage horizontally into sole positioning relation with the last and then downwardly, to bend down the margin portion of the ,sole.

14. In combination with a support for holding a last in inverted position, a horizontally extending, vertically movable bracket mounted adjacent the forepart end of said support, a spring for supporting said bracket in a normal position, a bellcrank lever pivoted on said bracket and having its arms respectively extending approximately horizontally'and vertically, a gage on said vertically extending arm, having last-engaging and sole-positioning faces and a sole-margin-engaging projection, and arranged to be carried by said arm into solepositioning relation with the last, upon downward swinging movement of said horizontally extending arm, a stop on said bracket arranged to be engaged by said lever when it has moved said gage into its operative position, and an operating device arranged to swing said lever intoengagement with said stop and draw down said bracket, successively.

15. In combination with a support for holding a last in inverted position having a forepart rest, a rod mounted for rotatable.

and vertical sliding movement adj acent said rest, a spring for supporting said rod in a normal position, a horizontally extending bracket on said rod, a bell-crank lever pivotcd at the end of said bracket and having its arms respectively extending approximately horizontally and vertically, a gage on said vertically extending arm having lastengaging and sole-positioning faces, and a sole-margin-engaging projection, so arranged that on downward swinging movement of said horizontally extending arm, said gage will be swung into sole-positioning relation with the last, an operating device for pulling said horizontally extending arm downwardly, and a stop of said bracket arranged to be engaged by the latter arm when said gage has been moved into positioning relation with the last, so that further pulling action on the arm will cause said bracket to be drawn downward, and said projection to be moved to bend the sole margin downward.

16. In combination with the fore-part rest of a last support for holding a last in inverted position, a gage having last-engaging and sole-positioning faces, a bell crank lever pivoted adjacent said rest, and on one arm of which said gage is pivotally mounted to swing towards and from the toe end of a last on said rest, an operating device for swinging said lever to carry said gage into positioning relationv with the toe end of a last on said rest, and a spring connecting said gage andthe other arm of said lever for yieldingly holding the gage in said positioning relation.

17. In combination with the fore-part rest of a last support for holding a last in inverted position, a gage having last-engaging and sole-positioning faces and a margin-engaging projection, a bell-crank lever pivoted adjacent said rest and on one arm of which said gage is mounted to swing towards and from the toe end of a last on said rest, means for swinging said lever to carry said gage into positioning relation with the last and for moving it downward to press said projection against the marginof a sole on the last, and a spring connecting said gage and the other arm of said lever, to hold said gage in yielding engagement with the last and said projection in yielding engagement with the sole margin.

18. In combination with a support for holding a last in inverted position, last engaging means having sole-positioning means and sole-margin engaging means carried thereby and a bell crank lever arranged to be successively swung and moved bodily to move said last-engaging means horizontally into sole-positioning relation with the last, and then downwardly to bend down the sole margin.

19. In combination with a support for holding a last in inverted position, a springsustained support, a bell crank lever mounted on said support, last-engaging means having sole-positioning means and solemargin-engaging means mounted on one arm of said lever and arranged to be carried horizontally thereby into sole-positioning relation with the last on said support, a stop on said spring sustained support arranged to be engaged by said lever when said last-engaging means has been moved onto said'solapositioning relation, and an operating device arranged to swing said lever and then pull said support down-- wardly while the lever is engaged with said stop.

7 20. In combination with the forepart rest of a support for holding a last in inverted position, a projecting lug on said rest, a tu. bular shaft mounted for rotatable and vertical sliding movement in said lug, a spring for sustaining said shaft, a stop forv limiting the upward movement of said shaft by spring, a bracket mounted on the upper end of said shaft and extending horizontally therefrom, a bell crank-lever pivoted on the end of said bracket, a gage mounted on one arm of said lever and having last-engaging and sole-positioning faces thereon, and a margin-engaging projection above said soleengaging face, a spring connecting the other arm of said lever and said gage, a treadle rod connected to the latter arm and extending downwardly thru said shaft for moving said lever to carry said gage into positioning relation with a last on said rest, and a stop on said bracket arranged to be engaged by said lever when said gage has been moved to said positioning relation to permit said bracket to be drawn downwardly with said shaft by said rod and cause said proj ection to bend .down the margin of the sole.

In testimony whereof, I have signed my name to this specification.

FRANK. CHATEAUNEUF.

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