US2083777A - Machine for applying pressure to shoe bottoms - Google Patents

Description

June 15, I937. v s. J'. FINN 2,083,777

MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed Sept. 1'7, 1935 Fig.1.

6 ivl/E/vm/i M. 74

Patented June 15, 1937 UNlTED STATES PATENT OFFICE MACHINE FOR APPLYKN G PRESSURE TO SHOE BOTTOMS Application September 17, 1935, Serial No. 40,960

15 Claims.

This invention relates to work-engaging devices for use in shoe machines and is illustrated herein as embodied in work abutments for use in cement sole-attaching machines of the type disclosed in United States Letters Patent No. 1,897,105, granted February 14, 1933, on an application filed in the name of Milton H. Ballard.

Cement sole-attaching machines of the type referred to are provided with pad boxes which comprise a substantially rectangular frame in which is mounted a fluid-filled pad having a distortable sole and shoe-receiving wall through which the sole-attaching pressure is applied, this wall conforming generally to the longitudinal contour of the shoe bottom. The pad box is provided with pressure-sustaining members in the form of pivoted yokes or bails which extend transversely of the pad at its forepart and rear portions and carry work-engaging members or abutments for engaging a shoe mounted thereon. As described in the patent referred to the work-engaging abutments are in reality plungers mounted for vertical sliding movement on the bails and arranged to be moved into engagement with the shoe by levers on the sole-attaching machine, the plungers being held in operative position against the shoe by spring-pressed pawls engaging ratchet teeth on the plungers.

Provision is made for limited adjustment of the forward bail longitudinally of the pad box to permit the toe-engaging abutment carried thereby to be positioned properly for operating on shoes which vary somewhat in size. This adjustment, however, is not sufficient to position the abutment for engaging Very small shoes, for example, infants and childrens shoes or the smaller sizes of youths and misses shoes. Moreover, since the pad box is adapted primarily to operate on large shoes no means is provided for adjusting the rear or heel-engaging abutment because the position of the heel portions of the larger sizes of shoes varies very little on the pad.

It is an object of the present invention to provide an improved work support adapted to operate on small shoes such as infants and childrens shoes and being equally well adapted to operate on large shoes.

To this end the invention provides in accordance with one of its features improved means for mounting a work-engaging member or abutment for swinging movement relatively to an operating member or pad to accommodate both small shoes and shoes of large sizes, said means causing work-engaging surfaces of the abutment to be moved nearer to or farther from the work-receiving surface of the pad by such swinging movement. As herein illustrated, the means for permitting swinging movement of the abutment comprises a rearwardly extending arm pivoted on the forward plunger of the pad box and having its rear end arranged to underlie the rear or heeleagaging plunger referred to. Pivoted on this arm are the work-engaging abutments, the forward abutment being pivoted on a slide mounted on the arm and thus being adjustable relatively to said arm and the rear abutment being pivoted directly to the end of the arm.

As illustrated, the abutments are longer than they are wide so that pivotal movement thereof causes different surfaces on the abutments to be positioned farther from or closer to the surface of the pad depending upon the direction in which the abutments are swung, thereby adapting the pad box for operating on both large and small shoes. Means is also provided for positively 1ocating the abutments in different predetermined positions and for causing them to be maintained in such positions.

With the above and other objects and features in View the invention will now be described in connection with the accompanying drawing and thereafter pointed out in the claims.

In the drawing,

Fig. l is a side elevation of the pad box embodying the present invention operating on a small shoe;

Fig. 2 is a fragmentary view of the pad box operating on a large shoe;

Fig. 3 is a vertical section taken on the line IIIIII of Fig. 1, and

Fig. 4 is a horizontal section taken on the line IV-IV of Fig. 1.

As more fully described in the patent referred to, the illustrated pad box comprises a rectangular frame l0 open at the top and provided at the bottom with the door-like member l2 pivoted at I4 and arranged to be swung upwardly about its pivot by a plunger (not shown) and maintained in such position by mechanism indicated genorally at M3 to cause a pad I8 in the pad box to apply operative pressure to a sole and shoe mounted thereon. The pad I 8 comprises a hollow fluid-filled vessel, preferably of rubber, the bottom wall of which is substantially flat and rests on the pivoted member 12 and the upper surface of which, as viewed in Fig. l, conforms generally to the longitudinal contour of a shoe bottom. The pad is secured in the pad box by means of narrow plates 20 fastened to the side walls of the frame and overlapping the upper surface of the pad.

The pad box it is also provided with a pair of pressure-sustaining members in the form of bails or yokes 22, 26 extending transversely of the pad box and arranged respectively to support the forepart and heel portions of a shoe against pressure applied by the pad. The forward ball or yoke 22 is slidably mounted at its opposite ends on horizontal rods which permit the bail to be moved a limited distance longitudinally of the pad while maintaining it in a substantially vertical position. The rear bail 2t is pivoted at its opposite ends on a pair of pins 28, and its pivotal movement longitudinally of the pad is limited by stop pins 30 and 32 mounted in the opposite side walls of the frame.

As described in the patent referred to, the bails 22, 24 carry vertical plungers 34, 36 normally held in upper positions by compression springsElS, 48 and arranged to be pressed downwardly against the springs by treadle-operated levers (not shown), provided on the sole-attaching machine to cause the lower ends of the plungers, which are enlarged, to be lowered into sup-- porting engagement with the shoe on the pad. Each plunger is provided with ratchet teeth 42 which are engaged by pawls 44 to hold the plungers in the position into which they are moved by the levers, the pawls being pivoted on the bails and being forced against the ratchet teeth by compression springs 46.

The plunger 34 on the forward ball 22 has pivotally mounted on its lower end a carrier member 68 provided with a T-slot 50 (Fig. 4) in which the enlarged end of the plunger is located. The carrier member is prevented from sliding on the plunger'by an upstanding pin 52 mounted in the carrier member and engaging the cylindrical end of the plunger, this construction permitting the carrier member to swing laterally of the pad on the lower end of the plunger. Pivoted on the carrier member on a horizontal pin 54 is a rearwardly extending yoked arm the rear end of which is arranged to underlie the lower end of the plunger 36 on the bail 24 when the latter is swung into its substantially vertical position, as shown in Fig. 1. The arm 55 is maintained nor mally in a substantially horizontal position by a tension spring 58 secured at one end to a pin 68 mounted in the carrier member and secured at its other end to a pin 62 carried by the arm.

The forward portion of the arm 56 is provided at each side with laterally projecting lugs 64, the lower edge portions of which extend outwardly beyond the lugs to form a T-shaped guideway 56. Mounted on the guideway 66 is a slide member '58 which carries on its lower side a shoeengaging abutment l0 pivoted on a pin 12. The abutment '50 is so shaped that when it is located in the position shown in Fig. 1 it will extend downwardly fairly close to the upper surface of the pad so that the work-engaging surface thereof will be nearer the rear bail 24 than when it is swung into the position shown in Fig. 2,in which the abutment has been swung to the left to move the Work-engaging surface thereof farther forwardly relatively to the bail 24 and also farther away from the surface of the pad. The abutment H! is provided with flat portions I4, 16 which are arranged to engage horizontal surfaces formed on the slide member 68 to locate the abutment in either one of the two positions illustrated, and a tension spring 18, secured at one end to the abutment and at its other end to the slide member, acts as a toggle spring to hold the abutment in either of said positions.

The rear end of the arm 56 is reduced in width at its lower portion and has pivoted on its reduced portion a last-engaging abutment 80 arranged to swing longitudinally of the pad around a pivot 82, the pivot being mounted in one of two holes 83, 85 formed in the arm and spaced from each other longitudinally of the pad. The abutment 83 may be shifted bodily longitudinally of the pad by moving the pivot 82 from the position shown in Fig. 1 into the position shown in Fig. 2. The abutment is considerably longer than it is wide and, consequently, when located in the position shown in Fig. 1, its work-engaging surface is relatively close to the surface of the pad, whereas, when it is swung in a counterclockwise direction into the position shown in Fig. 2, an adjacent surface, which is then arranged to engage the last, is located a greater distance from the pad and farther rearwardly with respect to the bail 24. The surface of the arm 56 above the reduced portion thereof acts as a stop for limiting the swinging movement of the abutment. The abutment 89 is maintained in either one of the positions shown in Figs. 1 and 2 by a tension toggle spring 84 secured at one end to the arm 55 and at the other end to the abutment.

When it is desired to operate on relatively small shoes, such, for example, as infants or childrens shoes, the slide member 68 is moved rearwardly on the guideway 66 to the proper position, as determined by the size of the shoe on the pad, and the abutment is swung downwardly into a substantially vertical position, as

shown in Fig. 1, so that its work-engaging surface will be located properly to engage the toe portion of the small shoe. In locating the soles and shoes on the pad, they are always placed so that the'shank portion of each shoe, regardless of its size, overlies that portion of the pad which is shaped to conform substantially with the shank portion of the shoe. Consequently, since the shank portions of all shoes are located in substantially the same position on the pad, the foreparts and heel portions of small shoes will be located nearer the central portion of the pad than the corresponding portions of large shoes. Accordingly, after the abutment Ill has been positioned as shown in Fig. 1, the pivot 82 of the last-engaging abutment 80 is moved into the forward hole 85 as shown in Fig. l, and the abutment itself is swung downwardly into a substantially vertical position, thereby bringing one work-engaging surface thereof nearer the sur face of the pad and nearer the forward abutment Hi. With the parts in this position, the pad is adapted to operate on a small shoe.

When operating on a large shoe, such as that shown in Fig. 2, the slide member 68 is moved forwardly on the guideway 66 and the abutment ID is swung in a clockwise direction until the flat surface Hi engages the surface or stop on the lower portion of the slide member. This locates the shoe-engaging surface of the abutment I0 farther away from the surface of the pad and farther forwardly relatively to the shank portion of the pad. The pivot pin 82 of the last-engaging abutment is shifted to the rear hole 83, and the abutment is swung rearwardly, as shown in Fig. 2, to move the work-engaging surface which engages large shoes farther away from the surface of the pad and farther rearwardly with respect to the bail 24. With the parts in this position, the

mechanism is arranged to operate on the large shoe shown in Fig. 2.

Shoes ranging in sizes between those illustrated in Figs. '1 and 2 can be accommodated by proper adjustment of the slide member 68 and, if necessary, by swinging the last-engaging abutment 80 into the position shown in Fig. l whileleaving its pivot in the rearward hole 83, as shown in Fig. 2. In this way, the pad box can be adapted for operating on both large and small'sizes of shoes and also upon shoes ranging between these sizes.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a shoe machine, the combination of means for operating on a shoe bottom, and a work-sup porting member, said member being arranged for swinging movement relatively to said operating means and having work-engaging surfaces thereon adapted to be located alternatively each to the exclusion of the other in different positions heightwise of the work by said swinging movement.

2. In a shoe machine, the combination of means for operating on a shoe bottom, and a work-supporting member, said member being arranged for swinging movement relatively to said operating means and having adjacent work-engaging surfaces thereon adapted to be moved separately into different work-engaging positions longitudinally of a shoe by such swinging movement.

3. In a shoe machine, the combination of means for operating on a shoe bottom, and a work-supporting member, said member being arranged for swinging movement relatively to said operating means and having work-engaging surfaces thereon each of which is adapted to be located by the swinging movement in a different position from another work-engaging surface heightwise and longitudinally of the work, said other workengaging surface being removed from work-engaging position by said swinging movement.

4. In a shoe machine, the combination of means for operating on a shoe bottom, and work-supporting members arranged for individual swinging movement relatively to said operating means, said members being spaced apart and each having work-engaging surfaces thereon adapted to be located nearer to or farther from the other member by said swinging movement.

5. In a shoe machine, the combination of means for operating on a shoe bottom, and work-supporting members arranged for swinging movement independently of each other relatively to said operating means, said members being spaced from each other and each having work-engaging surfaces thereon, one of which is adapted to be located nearer the operating means by swinging movement of the supporting members toward each other and another of which is adapted to be located farther from the operating means by swinging movement of said members away from each other.

6. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, an abutment for engaging a shoe on the pad and arranged for swinging movement longitudinally of the pad, said abutment having work-engaging surfaces thereon arranged to be located alternatively at different distances from the pad by said swinging movement, and means for maintaining said abutment in the different positions to which it may be swung.

'7. A pad box for use in applying pressure to shoe bottoms having, in combination, a'pad for receiving a sole and shoe, a pair of abutments for engaging a shoe on the pad and a last in said shoe, said abutments being arranged for pivoting movement longitudinally of the pad and each having work-engaging portions thereon arranged to be located respectively in different positions longitudinally and heightwise of the pad by said pivoting movement, and means for holding said abutments in different pivoted positions.

'8. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad'for receiving a sole and shoe, a pair of abutments for supporting a' shoe against pressure applied by the pad, said abutments being longer than they are wide and being pivoted at separated'p'oints for swinging movement longitudinally of the pad, means for limiting the swinging movement of the abutments in either direction, and meansffor holding said abutments at either limit of their swinging movement thereby to adapt them for operating on shoes of different sizes.

"9. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a pair of abutments for supporting a shoe against pressure applied by the pad, said abutments being longer than they are wide, means for positioning said abutments with their lengthwise dimension substantially parallel to the pad for operating on large shoes, and means for positioning said abutments with their widthwise dimension substantially parallel to the pad for operating on small shoes.

10. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a pair of abutments for supporting a shoe against pressure applied by the pad, said abutments being pivoted on the pad box for movement lengthwise of the pad and each having surfaces thereon arranged to be located in different positions lengthwise and heightwise of the pad by said pivotal movement, stops for locating said abutments in different pivoted positions lengthwise of the pad, and springs for maintaining said abutments in such positions.

11. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a pair of abutments pivoted at separated points opposite the pad and arranged for swinging movement toward and away from each other longitudinally of the pad, each abutment having a surface thereon arranged to be located farther from the pad and from the other abutment when the abutments are swung away from each other and each having another surface thereon arranged to be located nearer to the pad and the other abutment when the abutments are swung toward each other, means for limiting the swinging movement of the abutments toward and away from each other, and means for holding said abutments in either of said positions thereby adapting the pad box for operating upon both large and small shoes.

12. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a pair of bails on the pad box arranged for pivotal movement relatively to each other longitudinally of the pad, pressure sustaining members carried by said bails and arranged for movement heightwise of the pad, an arm pivoted on one of said pressure-sustaining members and having a portion engaging the other member, means for maintaining said portion in engagement with said other member,

abutments on said arm for engaging a last and shoe 0n the pad, means for adjusting said abutments relatively to each other on the arm, and means for swinging said abutments relatively to each other on the arm to move different surfaces on the abutments closer to or farther from each other and the sole-receiving surface of the pad.

13. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a pair of bails pivoted on the pad box and overlying the pad, said bails being-movable toward and away from each other longitudinally of the pad, pressure-sustaining members carried by said bails and arranged for sliding movement heightwise of the pad, an arm pivoted on one of said members and engaging the other member, a spring for maintaining said arm in engagement with said other member, abutments pivoted on said arm for engaging a last and shoe on the pad, said abutments having surfaces thereon arranged to be located in different positions longitudinally and heightwise of the pad by pivotal movement of the abutments, means for limiting the amount of pivotal movement of the abutments in either direction, and toggle springs for maintaining said abutments in one or the other of their pivoted positions.

14. In a shoe machine, the combination of means for operating on shoe bottoms, and a work-supporting member, said member being arranged for swinging movement longitudinally of the operating means and having a plurality of work-engaging surfaces arranged to be moved alternatively each to the exclusion of the other into different work-engaging positions by said swinging movement, thereby to adapt said surfaces for separately engaging shoes of different shapes.

15. A pad box for use in applying pressure to shoe bottoms having, in combination, a pad for receiving a sole and shoe, a support over the pad, pressure sustaining means between the pad and the support adapted to be located in different positions heightwise of the shoe to accommodate lasts of different heights, said means including a member rotatable about a center and having surfaces at different distances from said center, which surfaces are arranged for use each to the exclusion of the other for sustaining a last at different distances from the support.

SIDNEY J. FINN.

Images