US3051969A

US3051969A - Shoe conforming and wiper heating apparatus

Info

Publication number: US3051969A
Application number: US90565A
Authority: US
Inventors: Jacob S Kamborian; Heinz W Stemmler
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-02-20
Filing date: 1961-02-20
Publication date: 1962-09-04
Anticipated expiration: 1979-09-04

Description

Se t. 4, 1962 J. s. KAMBORIAN ETAL 3,051,969

SHOE CONFORMING AND WI PER HEATING APPARATUS Filed Feb. 20, 1961 4 Sheets-Sheet 1 P 4, 1962 J. s. KAMBORIAN ETAL SHOE CONFORMING AND WIPER HEATING APPARATUS Filed Feb. 20, 1961 4 Sheets-Sheet 2 P 4, 1962 J. s. KAMBORIAN ET AL 3,051,969

snow CONFORMING AND WIPER HEATING APPARATUS Filed Feb. 20, 1961 4 Sheets5heet 3 95 150 by 1M;

Sept. 4, 1962 .1. s. KAMBORIAN ETAL 3,051,969

SHOE CONFORMING AND WIPER HEATING APPARATUS Filed Feb. 20, 1961 4 Sheets-Sheet 4 4 mmvrozzs Jzmj .ilanzdaum Unite This invention relates to shoe machines, and particularly to machines for lasting the toes of shoes.

In pending application Serial No. 50,177, filed August 17, 1960, in the names of Jacob S. Kamborian, Charles J. Dyer and Alan G. Baker, there is disclosed a flexible shoe conformer comprising a substantially U-shaped yoke for engaging a shoe upper mounted on a last during relative heightwise movement of the yoke and last prior to the wiping of the lasting margin of the upper down upon the shoe insole that is also mounted on the last. In said application, resilient means are provided to yieldably urge the yoke against the last during the aforesaid relative movement to ensure that the yoke will perform its function efficiently. Subsequent to the conforming of the upper to the shape of the last, the lasting margin of the upper is wiped down against the insole by wipers that are moved across the insole. It is desirable that these wipers be heated so that they may iron the folded lasting margin flat against the insole.

An object of this invention is to provide a shoe conforming apparatus having a similar function to that disclosed in the aforesaid pending application in combination with a means for heating the wipers in all positions of the wipers. Another object is to provide a compact conforming apparatus comprising a substantially U-shaped yoke that takes up a minimum of space and whose support is located to a large extent within the frame of the machine and that provides for yieldably supporting the bight and legs of the yoke. A further object is to provide an efficient mechanism for applying heat to the wipers in an effective manner in all the positions of the wipers. Other objects of the inventions will become apparent upon a reading of the following detailed description of the invention.

These objects are carried out by providing a support for the yoke comprising a pair of support arms that are attached to the legs of the yoke and are pivotally mounted on a plate. The bight of the yoke is supported in the plate, and spring means are provided to yieldably urge the plate forwardly against a limit stop. The support arms are connected to each other through a toggle linkage that has a spring associated with it to apply a force to the toggle linkage in such a direction as to yieldably urge the support arms and the yoke legs connected thereto toward each other. T he support arms, which are positioned subjacent the wipers, have heated blocks mounted thereon: that are resiliently urged upwardly by springs into engagement with the wiper undersurfaces. The blocks have depending pins that fit into oversize holes in the support arms so that the blocks may rock or tilt during the movement of the Wipers and thus maintain a maximum bearing against the wipers despite any irregularities in the wiper undersurfaces.

Reference is now made to the accompanying drawings wherein:

FIG. 1 is a plan view of the shoe conforming apparatus and wiper heating means;

FIG. 2 is a view taken along the line 2r-2 of FIG. 1;

FIG. 3 is a view taken along the line 33 of FIG. 1 with the deformable yoke omitted;

FIG. 4 is a view taken along the line 44 of FIG. I with the deformable yoke omitted;

3,651,969 Patented Sept. 4, 1962 FIG. 5 is a plan view of the wiper driving mechanism;

FIG. 6 is a side elevation partially in section of the shoe support;

FIG. 7 is an elevation showing the wiper heating block and the portion of the support arm that supports the block;

FIG. 8 is a view taken along the line 88 of FIG. 7; and

FIG. 9 is a vertical section showing the relationship of the last, upper, yoke, heating blocks and wipers.

The improved shoe conforming and wiper heating apparatus may be used in conjunction with a toe lasting machine such as the one disclosed in pending application Serial No. 778,188, filed December 4, 1958 in the names of Robert B. Dunlap and Jacob S. Kamborian, now Patent No. 3,011,186, granted December 5, 1961. Referring to FIG. 6, the machine includes a frame 10. A shoe support 12 comprising a toe rest 13 and a heel clamp 15 is so mounted on the frame that it may be moved heightwise with respect thereto. To accomplish this, a sleeve 14 is slidably mounted on the frame for heightwise movement relative to the frame. The sleeve is supported in a vertical position on the frame by

brackets

16 and 18. A carriage 20 is fastened to the sleeve by

brackets

22 and 24, and a pair of

collars

26 and 28 are rigidly connected to the sleeve above and below the bracket 22 to provide for movement of the carriage with the sleeve. A fluid operated motor 36, having a piston rod 32 connected to the lower end of the sleeve, provides for effecting heightwise movement of the sleeve 14 and hence of the carriage 20. The sleeve supports a toe post 34 upon which is mounted the aforementioned toe rest 13.

A toe clamp 36 for clam-ping a last =38 against the toe rest 13 is slidably mounted in the carriage 20 for movement heightwise of the carriage by being connected to a plate 40 which is slidably mounted in a guideway 42 secured to the carriage 20. The plate 40 is connected to the piston rod 44 of a fluid actuated motor 46 mounted on the carriage 211. Thus, actuation of the motor 46 to raise or lower the piston rod 44 causes a corresponding raising or lowering of the toe clamp 36.

The heel clamp 15 is engageable with the heel end of the last by being slidably mounted for horizontal movement at the top of the carriage 21). The heel clamp, comprising a pair of divergent jaws, is connected through a post 48 to a bracket 56. The bracket 50 is connected to the piston rod 52 of a fluid actuated motor 54, so that actuation of the motor 54 to move the piston rod 52 causes a corresponding movement of the heel clamp 15 towards or away from the heel end of the last. A fluid actuated motor 56 is mounted on the carriage and drives a latch 58 into engagement with a toothed bar 60 connected to the post 48 to lock the heel clamp in clamped position.

The frame 16 includes a block 62 (see FIG. 5) upon which is slidably mounted a plate 64. A pair of wiper cams 66 are slidable over the plate 64 and have arcuate cam slots 68 therein to receive pins 70 that are upstanding from the plate 64. A pair of wipers 72 are rigidly connected to the wiper cams 66.

A fluid actuated motor 74, mounted in the frame 10, is connected to the plate 64 and the Wiper cams 66 so as to concomitantly impart rectilinear translation of the plate 64 with respect to the stationary block 62 and arcuate movement of the wiper cams 66 with respect to the plate 64 about the center of curvature of the slots 68. The motor 74 has a piston rod 76 that is coupled to a block 78, the latter being slidable in ways 80 bounding the edge of a slot 82 in the plate 64. Short links 84 are pivotally connected at one end to the block 78 and at their opposite ends to levers 86. The levers '86 are pivotally connected to the plate 64 intermediate their ends by pivots 88, and at the ends remote from the links 84 to links 90. Each 3 link 90, in turn, is pivotally connected to the block 62 at a fixed point 91. The block 78 has links 92 pivotally connected thereto at one end. The links 92 are pivotally connected at the ends remote from the block 78 to the cam plates 66.

It will thus be seen that movement of the piston rod 76 to the right (FIG. 5) causes a corresponding movement of the block 78. Due to the connections at pivots 88 between the plate 64 and the levers 86, movement of the block 78 to the right causes a corresponding translation of the plate 64, but at a slower rate than the block. Due to the links 92, movement of the block 7 8 to the right causes the wiper cams 66 to swing with respect to the plate 64 about an axis lying at the center of curvature of the camslots 68 with the pins 70 riding in the cam slots during the translation of the plate 64. The movement of the wiper earns 66 imparts a corresponding movement to the wipers 72 to cause them to wipe the lasting margin of the upper at the toe of the shoe down against the insole, as will be described below.

The shoe conforming and wiper heating unit 93 is mounted in the frame below the wipers and wiper driving means =(see FIGS. 14). The unit includes a block '94 slidably mounted in horizontal gibs 96 in the frame 10. The block has a lug 98 depending therefrom into which a threaded shaft 108 is screwed. The shaft 100 is rotatable in a bearing 102 fixed to the frame and is geared through

bevel gears

104 and 106 to a rod 108 rotatably mounted in the frame. The rod 108 extends through the frame and has a handle 110 secured thereto. Thus, rotation of the handle 110 will cause the threaded shaft 100 to rotate in the lug 98 and cause the lug together with the rest of the block 94 to slide along the gibs 96.

The block 94 includes spaced parallel Ways 112 between which is slidably mounted a plate 114. A pin 116 projects into each of the ways 112 in a position to intersect the plate 114 and act as a stop to thereby limit the forward movement of the plate in the ways. The plate 114 is yieldably urged forwardly against the pins 116 by two compression springs .118 one of which is shown in FIGS. 2 and 4. The block 94 has two lugs 120 upstanding therefrom (see FIG. 3). A rod 122 is threaded into a threaded opening in each lug 120 (see FIG. 2). Each rod 122 has a small diameter extension 124 projecting forwardly therefrom that extends through an opening 126 in a projection 128 extending downwardly from the plate 114. Each rod extension 124 has a kerf in which a screw-driver bit may be inserted. A compression spring 118 is wound about each rod extension and extends between the projection 128 and a shoulder 130 at the juncture of the threaded portion of the rod 122 and the rod extension 124. By rotating the rods 12-2 in the lugs 126, the distance between the shoulders 130 and the projections 128 may be adjusted, and thus the spring forces yieldably urging the plate 114 against the pins 116 may be adjusted.

The plate 114 has a pair of support arms 132 pivoted thereto at the rear ends of the support arms by pivots 134. The support arms converge toward each other at approximately the forward end of the plate 114 and then diverge from each other to form divergent support arm fingers 135. A shoe conformer 138, in the form of a generally U-shaped yoke having a bight 137 and legs 144 extending forwardly of the bight on opposite sides of the bight, is provided. The plate 114 has a recess 136 at its forward end adapted to receive the bight of the yoke. L-shaped flanges 140 are provided adjacent the forwardmost extremities of the arms 132 which are adapted to extend into elongate slots 142 in the legs of theyoke (see FIG. 1) and therebyconnect the fingers to the yoke. The yoke is fashioned out of a flexible, deformable material, preferably having a low coefficient of friction, such as Teflon. Reference is made to the aforementioned pending application Serial No. 50 ,177, filed August 17,

A} 1960 for a more detailed disclosure of the yoke and the manner in which it is mounted.

The support arms 132 are connected to each other through a toggle linkage comprising toggle links 146 pivotally connected to the arms 132 by pivots 148 and pivotally connected to each other by a toggle pin 150. The toggle pin extends downwardly through the plate 114 by way of an elongate slot 152 in the plate.

The plate 114 has ways 154 that slidably receive a primary slide 156 (see FIGS. 3 and 4). Slidably mounted in ways 158 (FIG. 4) in the primary slide is a secondary slide 160. The lower end of the toggle pin is seated in the secondary slide, and the primary slide has an elongated slot 162 to accommodate the toggle pin.

The primary slide has a plate 166 dependent therefrom at its forward end in which a hollow bushing 168 is threaded. A shaft 170 is threaded into a dependent flange 172 of the secondary slide and is slidable in the bushing 168. A compression spring 174, coiled about the shaft between the flange 172 and the bushing 168, serves to yieldably urge the secondary slide rearwardly in the ways 158 of the primary slide 156 to a position wherein the toggle pin 15%) abuts the rearward end 164 of the slot 162. By adjusting the bushing 168 in the plate 166, the spring force yieldably urging the secondary slide against the primary slide may be adjusted.

A rod 176 (FIG. 1) having a knob 178 thereon is rotatably mounted in a bearing that is fixed in the plate 166 and which is similar to the aforementioned bearing 102 (see FIG. 4). The rod 176 is threaded into a lug 179 dependent from the plate 114. By rotating the knob 178, the position of the primary slide 156, the secondary slide 160 and the toggle pin 150 may be adjusted forwardly and rearwardly.

A heating block 180, made of heat conductive material such as brass, is mounted on each support arm finger 135 beneath each wiper 72. The blocks are constructed so that their upper surfaces are substantially level with the upper surface of the yoke 138 and bear against the undersurfaces of the Wipers 72 (see FIG. 9). Each block comprises a forward portion 182 that is substantially parallel to its associated support arm finger 135 and a rear inwardly curved portion 184. An electric heating cartridge 186 is located in a bore 138 in each block portion 182. Each heating cartridge has Wires 191) extending therefrom leading to a source of power. The blocks have pins 192 (FIGS. 7 and 8) extending downwardly therefrom that are received in bores 194 in the support arm fingers 135. The bores 194 have a larger diameter than the pins 192 to permit some degree of play of the pins in the bores. Spring means are provided in the fingers 135 for yieldably urging the blocks upwardly of the fingers 135 against the undersides of the wipers 72. As shown in FIG. 7, this takes the form of a ball 196 slidable in a bore 198 in the finger 135 and receivable in a socket 200 in the undersurface of the block portion 182. A plunger 262 bears against the undersurface of the ball, and the plunger is engaged by a compression spring 284 interposed between the plunger 202 and a cap 226 threaded into the bottom of the bore whereby the spring yieldably urges th block 180 upwardly against the associated wiper. Alternatively, the blocks 180 may be urged upwardly by a leaf spring 208 secured to the undersides of the fingers 135 bearing against a plunger 210 extending through a bore in the finger, the plunger 210 in turn bearing against the underside of the block (see FIG. 4).

The heated blocks 13% are so located as to bear against the undersides of the Wipers 72 in both the advanced and retracted positions of the wipers and thus, continuously supply heat to the wipers so that when the wipers advance across the shoe to wipe the lasting margin of the upper down against the insole, they will, due to their heated condition, iron the margin down fiat against the insole and press down any irregularities in the lasting some margin. During the movement of the wipers from retracted to advanced position, the blocks 180 will, due to the aforementioned spring means be yieldably urged against the wiper underside. Ideally, the undersurfaces of the wipers should be flat or planar, but in actuality they have irregularities and are not completely flat. The pins 192 and oversize bores 194 permit the blocks 180 to rock to a limited degree in any direction so that the upper surfaces of the blocks 180 have the maximum amount of their upper surfaces bearing against the undersurfaces of the wipers even where the wiper undersides deviate from the horizontal.

The shoe conforming and wiper heating unit 93 is so mounted in the machine that the wipers 72 in their movement move just over the upper surface of the yoke 138 and as aforesaid, the upper surfaces of the blocks bear at all times against the undersurfaces of the wipers. The unit is adjusted in the machine so that all of the inwardly facing surface 212 of the yoke 138 is exposed forwardly of the wipers 72 in the retracted position of the wipers, and the yoke legs 1 14 are adjusted to approximately conform to the shape of the last that is to be worked on. To accomplish these adjustments, the handle 110 may be rotated to adjust the block 94 in the frame and thus adjust the position of the yoke 138 relative to a shoe that is mounted in the shoe support 12. The rods 122 and the bushing 168 are rotated to respectively provide the desired settings for the

springs

118 and 174. The knob 178 is rotated to adjust the position of the primary slide 156 in the plate 114. Due to the spring 174 yieldably urging the toggle pin 150 mounted on the secondary slide 160 against the slot end 164, forward or rearward movement of the primary slide causes a corresponding movement of the toggle pin 150. Forward movement of the toggle pin, through the toggle linkage, causes the arms 132 to swing about the pivots 134 in a direction to separate the support arm fingers 135 and thus move the yoke legs 144 apart and rearward movement of the toggle pin causes the yoke legs to move closer together.

When the unit 93 has been adjusted in accordance with the size and shape of the shoe to be lasted, the last 38 having a shoe insole 214 and upper 216 mounted thereon (see FIG. 9) is placed bottom-up on the shoe support 12. At this time the. toe clamp 36 and heel clamp are brought into engagement with the shoe and remain in engagement with the shoe during the movements of the shoe and wipers described below. The support 12 at this time is so located that the upwardly facing surface of the insole is above the plane of the undersurfaces of the wipers 72 and the shoulder 218 of the last at the intersection of the last bottom and side edges overlaps the inwardly facing wall 212 of the yoke 138 as indicated in FIG. 1.

.T he motor 30 is now actuated to lower the last to a location wherein the upwardly facing surface of the insole 214- is positioned below the undersurface of the wipers an amount approximately equal to the thickness of the lastingmargin 220 of the .upper. During this downward movement the bight 137 of the yoke is yieldably urged forwardly by the springs 118 to maintain the slide 114 pressed against the pins 116, and the spring 174, by urging the toggle pin 150 rearwardly urges the legs 139 of the yoke inwardly thereby compressing the deformable yoke. When the yoke can no longer be compressed, the bight 137 of the yoke is flexed rearwardly of the machine against the pressure exerted by the springs 118 causing the plate 114 to move rearwardly away from the pins 116. Should the last be substantially wider than the space between the yoke legs 139, after the yoke legs have reach the limits of their compressibility, the yoke legs are moved apart against the yieldable pressure exerted by the spring 174. The movement apart of the yoke legs causes the support arms 132 to swing apart about the pivots 134, which in turn through the toggle links 146 causes the toggle pin 150 and secondary slide 160 to move forwardly against the pressure of the spring 174. The net effect of these yieldable forces is to cause the upper 216 to snugly conform to the shape of the last 38 during the downward movement of the shoe support and take out any wrinkles or irregularities in the upper material, and to cause the lasting margin 220 of the upper to extend upwardly of the last (FIG. 9).

After the shoe and last have completed their downward movement, adhesive may be applied in the angle formed between the upstanding margin of the upper and the insole which will adhesively bond the lasting margin to the insole when the lasting margin is subsequently wiped down onto the insole. Although the adhesive may be applied in any manner desired, it is preferred to apply a thermoplastic quick-setting adhesive in the manner disclosed in Patent No. 2,969,555, granted Jan. 3 1, 1961, to Jacob S. Kamborian or pending application Serial No. 762,600, filed September 22, 1958 in the name of Jacob S. Kamborian, now Patent No. 3,009,182, granted November 21, 1961. Alternately, precemented uppers may be used wherein the lasting margin has adhesive applied thereto prior to the insertion of the shoe in the machine, which adhesive is activated to bond the lasting margin to the insole under the pressure exerted by the wipers during their wiping action. It is also contemplated that after the lasting margin has been wiped down over the insole, it may be secured thereto by tacks, staples or other similar fastening means.

When the shoe and last have completed their downward movement, the shoe upper is yieldably clamped between the last and yoke as indicated in FIG. 9. The motor 74 is now actuated to move the wipers 72 forwardly over the shoulder 218 of the last to wipe or fold the lasting margin 220 of the upper 216 down against the insole 214. During this movement the heated blocks bear continuously against the wipers so that the wipers remain continuously heated during their movement, and thus iron the folded lasting margin down flat against the insole. As the wipers move over the shoe, upward pressure may be applied to the last through the motor 30 to create pressure between the undersurfaces of the wipers and the upwardly facing surface of the insole during the wiping operation. When the wipers have completed their forward movement, an increased bedding pressure may be applied between the insole and wipers. After the completion of the wiping operation, the motor 30 is actuated to lower the last, the motor 74 is actuated to retract the wipers, the toe clamp 36 and heel clamp 15 are disengaged from the shoe and the carriage 20 is raised to its initial position. The lasted shoe may now be removed from the machine.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents falling within the scope of the appended claims. For example, it is within the purview of the invention to use the shoe conformer in other organizations than that disclosed, such as in a box-toe trimming machine to conform the upper to the shape of the last prior to trimming the boxtoe, lining and outer leather at the toe end of the shoe.

Reference is made to copending application Serial No. 34,564, filed June 7, 1960, in the name of Jacob S. Kamborian and Heinz W. Stemmler, which discloses a different shoe conforming apparatus having the same general purpose as the shoe conforming apparatus of the instant invention.

We claim:

1. In a lasting machine comprising wiper means; a shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movement to the shoe support and the wiper means to cause relative downward movement of the shoe support with respect to'the wiper means; shoe conformer means for engaging the shoe upper during said movement to conform the upper to the shape of the last; means for supporting the shoe conformer below the wiper means; and means for moving the wiper means across the last bottom to fold the lasting margin of the upper against the insole: the improvement comprising means for heating the wiper means, said heating means being mounted on the shoe conformer support means.

2. A lasting machine comprising: wiper means; a shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movement to the shoe support and wiper means to cause relative downward movement of the shoe support with respect to the wiper means; a shoe conformer for engaging the shoe upper during said movement to conform the upper to the shape of the last; means for supporting the shoe conformer below the Wiper means, said conformer supporting means comprising a finger positioned alongside of and connected to the conformer; means for moving the wiper means across the last bottom to fold the lasting margin of the upper against the insole; and wiper heating means mounted on said finger.

3. A lasting machine comprising: wiper means; a .shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movement to the shoe support and wiper means to cause relative downward movement of the shoe support with respect to the wiper means; a shoe conformer comprising a yoke having a bight and legs extending forwardly of the bight on opposite sides of the bight for engaging the shoe upper during said movement to conform the upper to the shape of the last; means for supporting the yoke below the wiper means with the legs extending toward the last comprising a finger extending alongside of and exteriorly of each yoke leg and means connecting each finger to a yoke leg; means for moving the wiper means across the last bottom to fold the lasting margin of the upper against the insole; and a heated block on each finger extending upwardly thereof to heat the Wiper means.

4. A lasting machine according to claim 3, wherein the heated blocks are in engagement with the undersur-face of the wiper means. i

5. A lasting machine comprising: wipers; a shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movement to the shoe support and wipers to cause relative downward movement of the shoe support with respect to the wipers; a shoe conformer comprising a yoke having a bight and legs extending forwardly of the bight on opposite sides of the bight for engaging the shoe upper during said movement to conform the shoe upper to the shape of the last; means for supporting the yoke below the wipers with the legs extending toward the last comprising a finger extending alongside of and exteriorly of each yoke leg and means connecting each finger to a yoke leg; means for moving the wipers across the last bottom to fold the lasting margin of the upper against the insole; a heated block mounted on each finger; and yieldable means for urging said blocks upwardly of the fingers into engagement with the undersurfaces of the wipers.

6. A lasting machine comprising: Wipers; a shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movements to the shoe support and wipers to cause relative downward movement of the shoe support with respect to the wipers; a shoe conformer comprising a yoke having a bight and legs extending forwardly of the bight on opposite sides of the bight for engaging the shoe upper during said movement to conform the shoe upper to the shape of the last; means for supporting the yoke below the wipers with the legs extending toward the last comprising a finger extending alongside of and exteriorly of each yoke leg and means connecting each finger to a yoke leg; means for moving the wipers across the last bottom to fold the lasting margin of the upper against the insole; a heated block located on each finger; yieldable means for urging said blocks upwardly of the fingers into engagement with the undersurfaces of the wipers; and means mounting the blocks on the fingers to permit rocking movement of the blocks with respect to the fingers.

7. A lasting machine comprising: wipers; a shoe support for supporting a last having a shoe upper and insole mounted thereon; means for imparting relative heightwise movement to the shoe support and Wipers to cause relative downward movement of the shoe support with respect to the Wipers; a shoe conformer comprising a yoke having a bight and legs extending forwardly of the bight on opposite sides of the bight for engaging the shoe upper during said movement to conform the shoe upper to the shape of the last; means for supporting the yoke below the wipers with the legs extending toward the last comprising a finger extending alongside of and exteriorly of each yoke leg and means connecting each finger to a yoke leg; means for moving the wipers across the last bottom to fold the lasting margin of the upper against the insole; a heated block located on each finger beneath a wiper; a pair of pins depending from each block; a pair of bores in each finger of greater cross-sectional dimensions than the pins for receiving said pins and permit the blocks to rock with respect to the fingers; and spring means associated with each finger for yieldably urging the fingers upwardly into engagement with the undersurfaces of the wipers.

8. A shoe conforming apparatus comprising: a deformable yoke having a bight and a pair of legs extending forwardly of the bight on opposite sides of the bight; a block; a plate slidably mounted in the block; spring means yieldably urging the plate forwardly on the block; stop means for limiting the extent of forward movement of the plate under the influence of the spring means; means on the plate for supporting the bight of said yoke; a pair of support arms pivotally mounted on said plate and extending alongside said yoke legs exteriorly of said yoke; means connecting each support arm to a yoke leg; a primary slide mounted in the plate; a secondary slide slidably mounted in the primary slide; aligned slots in the plate and primary slide; a toggle pin mounted in the secondary slide and extending upwardly through said slots; a toggle link pivotally connected to each support arm, said links being pivotally connected at their ends remote from the support arms to said toggle pin; and spring means interposed between said primary and secondary slides for yieldably urging the secondary slide rearwardly of the primary slide whereby the support arms and the yoke legs connected thereto are yieldably urged toward each other.

9. A shoe lasting apparatus for use with a last having a shoe upper and insole mounted thereon comprising: wiper means; means for moving the wiper means in a direction to cause it to move across the insole to wipe the lasting margin of the upper upon the insole; a heated block positioned below the Wiper means; and means for yieldably urging the block upwardly against the undersurface of the wiper means.

10. A shoe lasting apparatus for use with a last having a shoe upper and insole thereon comprising: wiper means; means for moving the wiper means in a direction to cause it to move across the insole to wipe the lasting margin of the upper upon the insole; a heated block positioned below said Wiper means; yieldable means for urging said block upwardly into engagement with the undersurface of the wiper means; and means supporting the block for rocking movement.

11. A shoe lasting apparatus for use with a last having a shoe upper and insole mounted thereon comprising: wiper means; means for moving the wiper means in a direction to cause it to move across the insole to wipe the lasting margin of the upper upon the insole; a heated block positioned beneath the wiper means; a pair of pins depending from the block; a support finger located below the block; a pair of bores in the finger of greater crosssectional dimensions than the pins for receiving said pins and permitting the block to rock with respect to the finger; and spring means associated with the finger for yieldably urging the finger upwardly into engagement with the undersurface of the wiper means.

12. A shoe conforming apparatus comprising: a de formable yoke having a bight and a pair of legs extending forwardly of the hight on opposite sides of the bight; a plate located rearwardly of the yoke; means on the plate for supporting the bight of the yoke; a pair of support arms pivotably mounted on said plate and extending alongside said yoke legs exteriorly of said yoke; means connecting each support arm to a yoke leg; a primary slide 10 mounted in the plate; a secondary slide mounted in the primary slide; aligned slots in the plate and the primary slide; a toggle pin mounted in the secondary slide and extending upwardly through said slots; a toggle link pivotably connected to each support arm, said links being pivotably connected at their ends remote from the support arms to said toggle pin; and spring means interposed between said primary and secondary slides for yieldably urging the secondary slide rearwardly of the primary slide whereby the support arms and the yoke legs connected thereto are yieldably urged toward each other.

References Cited in the file of this patent UNITED STATES PATENTS 2,108,859 Kamborian Feb. 22, 1938 2,153,570 Iorgensen Apr. 11, 1939 2,986,753 Gilbride June 6, 1961