US3668728A

US3668728A - Machine for disassembling a shoe from a last

Info

Publication number: US3668728A
Application number: US113831A
Authority: US
Inventors: Jacob S Kamborian; Wladyslaw Typrowicz; Gordon S Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1971-02-09
Filing date: 1971-02-09
Publication date: 1972-06-13
Anticipated expiration: 1989-06-13
Also published as: DE2203793B2; GB1347624A; CA954657A; DE2203793A1

Abstract

A machine for disassembling a shoe from a last supported bottomup by concomitantly causing a pad to press against and raise the quarter of the shoe above the bottom of the last and push the raised quarter toewardly over the bottom of the last and causing a bar to move downwardly against the bottom of the forepart of the shoe to break the last. Grippers are provided that grip the forepart portions of the shoe and move toewardly to remove the shoe from the broken last and a second bar is provided that is raised to close the last after the shoe has been removed from the last.

Description

United States Patent Kamborian et al.

[ 1 June 13, 1972 [54] MACHINE FOR DISASSEMBLING A SHOE FROM A LAST [72] Inventors: Jacob S. Kamborian, West Newton; Wladyslnw Typrowicz, Belmont; Gordon S. Anderson, Framingham, all of Mass.

[73] Assignee: Jacob S. Kamborian, West Newton, Mass.

; by said Typrowicz and Anderson 22 Filed: Feb. 9, 1971 21 Appl.No.: 113,831

521 0.8. CI .Q .12/1 s.1

3,381,323 5/1968 Spence ..12/15.1

Primary Examiner-Patrick D. Lawson Attorney-Albert Gordon [57] ABSTRACT A machine for disassembling a shoe from a last supported bottom-up by concomitantly causing a pad to press against and raise the quarter of the shoe abovethe bottom of the last-and push the raised quarter toewardly over the bottom of the last and causing a bar to movedownwardly against the bottom of the forepart of the shoe to break the last. Grippers are provided that grip the forepart portions of the shoe and move toewardly to remove the shoe from the broken last and a second bar is provided that is raised to close the last after the shoe has been removed from the last.

19 Chins, 16 Drawing Figures PATENTEDJUH 13 I972 33, 668 728 SHEET 01 0F 14 PATENTEDJUN13 I972 3.668 728 sum 02 0F 14 PATENTEDJUN 1 3 I972 3,668 728 sum 03 0F 14 PATENTEDJUNUISIE 3,668,728

sum as or 14 FIG. 4-

PATENTEDJUN 13 m2 3. 668 728 sum as or 14 PATENTEnJun 13 I972 3, 668. 728

saw 08UF14 PATENTEDJUH 1 3 I972 3,668. 728

sum as or 14 FATENTEDJUH 1 3 I972 sum 10 HF 14 FIG. ID

" FIG. n

PATENTEDJUM 13 m2 sum 12 [1F 14 PATENTEDJUH 13 I972 sum 13 [1F 14 PATENTEDJuu 13 I972 3, 668 728 sum 1a or 14 FIG. 15

MACHINE FOR DISASSEMBLING A SHOE FROM A LAST After shoe manufacturing operations have been completed on a shoe mounted on a last, the last is broken by moving the forepart portion of the last away from the quarter portion of the last so that the shoe may be removed from the last. This invention is concerned with a machine for performing this operation.

One feature of the invention is concerned with the concurrent breaking of the last and the movement of the quarter of the shoe clear of the last bottom followed by the removal of the shoe from the broken last. To accomplish this, the machine includes a support for supporting bottom-up a shoe assembly formed of the last having the shoe mounted thereon.

A bar located above the forepart of the shoe assembly is caused to move downwardly to break the last at the same time as a pad pressing against the shoe quarter is raised to raise the shoe quarter above the last bottom. Grippers are provided that grip the sides of the shoe on the broken last and move toewardly to remove the shoe from the broken last.

A second feature of the invention deals with the closing'of the last after the shoe has been removed therefrom. A second bar is provided that is located below the forepart of the shoe assembly and is raised after the shoe is removed from the broken last to close the last. In its broadest aspects, this feature of the invention has utility regardless of whether the shoe is removed from the broken last by means other than the grippers or by hand.

A third feature of the invention deals with the operation of the pad. The pad is so operated as to apply a yieldable force against the shoe quarter while it is rising so that, after the shoe quarter has been raised clear of the last bottom, the shoe quarter is pushed toewardly by the pad over the bottom of the last. A control is provided that enables the pad to apply a relatively heavy pressure while it is raising the quarter upwardly of the last bottom and enables the pad to apply a relatively light pressure when it is pushing the shoe quarter toewardly over the last bottom so that it will not crush the quarter.

A fourth feature of the invention is concemedwith the mounting 'of the pad. The pad is mounted on a bracket for swinging movement through an are having a prescribed lower limit so that it may conform to the shape of the last when it is raising the shoe quarter above the last bottom. Constraining means are provided to cause the arc of swinging movement to have a lower limit that is higher than the prescribed lower limit when the pad is moving toewardly to push the shoe quarter over the last bottom so that the pad will not intersect the las bottom during this toeward movement.

A fifth feature of the invention is concerned with a stripper that is located below the pad and is movable in unison with the pad. The stripper engages the topline of the quarter of the shoe while the pad and stripper are rising to augument the action of the pad in raising the shoe quarter upwardly of thelast bottom.

The third, fourth and fifth features of the invention have utility regardless of whether the last is broken and the shoe is removed from the last by the machine or manually by the operator.

In the drawings:

FIG. 1 is an elevation of the machine;

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

FIG. 3 is a plan view taken on the line 3-3 of FIG. 1;

FIG. 3A is a section taken on the line 3A-3A of FIG. 2;

FIG. 4 is a partially sectional view taken on the line 4-4 of FIG. 3;

FIG. 5 is a view taken on the line 5-5 of FIG. 3;

FIG. 6 is a view taken on the line 6-6 of FIG. 3;

FIG. 7 is a view taken on the line 7-7 of FIG. 3A;

FIG. 8 is a view taken on the line 8-8 of FIG. 3A;

FIG. 9 is a plan view of the pad and its mounting;

FIG. 10 is a view taken on the line 10-10 of FIG. 9;

FIG. 11 is a view taken on the line ll-ll of FIG. 4;

FIG. 12 is a schematic representation of a portion of the control circuit of the machine;

FIG. 13 is a representation of the shoe assembly as it appears in the machine just before the last is broken and the shoe quarter is raised above the last bottom;

FIG. 14 is a view taken on the line 14-14 of FIG. 13; and

FIG. 15 is a representation of the shoe assembly as it appears in the machine after the last has been broken and the shoe quarter has been raised above the last bottom.

For ease of explanation, directions that extend from left to right in FIG. 1 will be described as forward and directions that extend from right to left in FIG. 1 will be described as rearward. The side of a part facing forwardly will be considered to be its front and the side of a part facing rearwardly will be considered to be its back.

Referring to FIGS. 1-3A, a pair of beams 10 and l 1 extends upwardly of a base 12. A last support 14, having a last pin 16 extending upwardly thereof, is mounted to the beam 11. A bell crank 18 is swingably mounted to a shaft 20 that is secured to and extends between the

beams

10 and 11. An air operated motor 22, that is pivotally mounted to the base 12, has an upwardly extending piston rod 24 that is pivoted to a tail 26 of the bell crank 18. A lever 28 is pivoted to the back of the bell crank 18 by a pin 30. An air operated motor 32, that is pivoted to the front of the bell crank 18 by a pin 34, has a piston rod 36 that is pivoted to the lever 28.

A pad mount in theforrn of a bracket 38, secured to the top of the lever 28, has a pair of

flanges

40 and 42. A projection 44, formed on the bracket 38, extends between the

flanges

40 and 42. A shaft 46 is pivotally mounted in the

flanges

40, 42 and extends laterally of the flange 40. A bracket 48 (FIG. 7), rigidly clamped to the shaft 46 inwardly to the flange 40, has a tail 50 that is in intersecting relationship with respect to a bolt 52 that is mounted to the projection 44. A bracket 54 (FIG. 8), rigidly secured to the shaft 46 inwardly of the flange 42 and extending towards the

beams

10 and 11, has a cam follower roll 56 mounted to its end. A bolt 58, adjustably mounted to the bracket 54, is in intersecting relationship with respect to the projection 44.

Referring to FIGS. 9 and 10, a bracket 60, having flanges 62, is rigidly secured to the end of the shaft 46 remote from the

flanges

40, 42. A U-shaped pad 64, made of a flexible material such as polyurethane, has a tang 66 secured to its bight 68 and a front pressure applying face 69. The tang 66 has a lengthwise extending slot 70 that receives a pin 72, the pin 72 being mounted to the bracket 60. A lever 74 is fulcrumed to each flange 62 by a pin 76. One end of each lever 74 extends outward of and is secured to a leg 78 of the pad 64. A compression spring 80, extending between the other end of each lever 74 and a flange 62, acts to yieldably urge the pad legs 78 outwardly. A pair of straps 82 are pivoted at their tops to the pin 72 and are secured at their bottoms to a plate 84. The plate 84 extends toward the pad 64 and has a lip 86 that extends upwardly of the back of the pad bight 68. A stripper plate 88 is secured to and is positioned below the plate 84. The plate 88 extends beneath and forwardly of the pad bight 68 and its front end is formed into a concave stripper surface 90. A bolt 92 extends loosely through a lug 94 that is secured to thebracket 60. The front end of the bolt 92 is pivoted to the straps 82 by a pin 96. A compression spring 98, interposed between the lug 94 and a nut threaded onto the bolt 92, acts to yieldably urge the straps 82, the lip 86 and the stripper surface 90 forwardly about the axis of the pin 72 to a position wherein the lip 86 engages the back of the pad 64 as indicated in FIG. 10.

Referring to FIGS. 1-5, a beam 102 is pivoted to the beams.

- rotatable in the

beams

10 and 11. A link 106 is pivoted to the bell crank 18 forwardly of the shaft 20 to extend upwardly of the bell crank. The top of the link 106 is pivoted to a clevis 108 formed on the beam 102.

An air operated motor 110 is secured to the beam 102. The motor 110 comprises a cylinder 112 that extends lengthwise of the beam 102 and a piston 113 (FIG. 12) mounted within and movable lengthwise of the cylinder. The ends of a cable 114 are attached to the opposite sides of the piston and extend through the opposite ends of the cylinder 112. The cable 114 extends about pulleys 116 and 118 that are rotatably mounted to the beam 102 and the ends of the cable remote from the piston are secured to a clip 120 (FIG. 4) that is secured to a carriage 122. A rod 124 and a pair of

flanges

126 and 128, secured to and extending lengthwise of the beam. 102, act to guide the carriage 122 for forward-rearward movement along the beam 102. A frame 130 is secured to and extends laterally of the carriage 122 in general alignment with the pad 64.

A pair of levers 132 are pivoted to the frame 130 on pins 134. A gripper 136 is pivoted to the back of each lever 132. The piston rod 138 of an air actuated motor 140 is pivoted to the back of one of the levers 132 and the cylinder 142 of the motor 140 is pivoted to the back of the other one of the levers 132. A bar 142 is. mounted to a pair of flanges 146 on the frame 130 by means of pins 148 (FIG. 11).

Referring to FIGS. 1-3, an air actuated motor 149 is pivoted to the base 12. The piston rod 150 of the motor 149 is pivoted to a lever 152, and the back of the lever 152 is pivoted on the shaft 20. A bar 154 is mounted on the front of the lever 152.

A cam 156 (FIG. 1 and 3) is mounted to the back of the beam 102 in alignment with the cam follower roll 56.

In the idle condition of the machine: the piston rod 24 is retracted into the motor 22 so that the back of the bell crank 18 is lowered to retain the pad 64 in a lower position and the front of the bell crank 18 is raised to retain the front of the beam 102 in a raised position; the piston rod 36 is projected out of the motor 32 so that the pad 64 is swung rearwardly about the axis of the pin 30; the carriage 122, together with the frame 130, the gripper pads 136 and the bar 142 are retained in a forward position on the beam 102 by-the motor 110; the piston rod 138 is retracted into the cylinder 142 so that the grippers 136 are in outer positions; and the piston rod 150 is retracted into the motor 149 so that the bar 154 is in a lower position. At this time, the shaft 46, together with the pad 64, is urged downwardly (clockwise in FIG. 1) in the

flanges

40, 42 by gravity to a position wherein the tail 50 (FIG. 7) engages the bolt 52.

Referring to FIGS. 13 and 14, a shoe assembly comprising a last 158 having a completed shoe 160 mounted thereon is placed bottom-up on the support formed by the last support 14 and the last pin 16 with the last pin entering the conventional thimble in the last. As is conventional, the quarter 162 and the vamp 164 of the last are connected to each other by a hinge 166.

Referring to the schematic representation of a portion of the machine control circuit shown in FIG. 12, the motor 32 is retained in its idle position by pressurized air passing from a source 168 through a line 170, a line 172, a pressure regulator 174 set at a relatively high pressure, a line 176, a valve 178 and a line 180 to the motor 32. To start the machine cycle, the operator momentarily shifts a pair of valves 182 and 184 to enable pressurized air to pass from the line 170 through the valves 182 and 184 and a pilot line 186 to the valve 178 to shift the valve 178. Upon release of the valves 182 and 184 by the operator, the valve 178 remains in shifted position due to inertia. The shifting of the valve 178 allows the air in the line 180 to vent to atmosphere through the valve 178 and enables pressurized air to pass from the valve 178 through a line 188, a valve 190, a line 192, a shuttle valve 193 and a line 194 to the motor 32 to operate the motor 32 to retract its piston rod 36 under the relatively high pressure provided by the regulator 174'and thus swing the pad 64 forwardly about the axis of the pin 30 under the yieldable force of the pressurized air of the motor 32 to cause the pad 64 to engage the quarter of the shoe. In the idle condition of the machine, as indicated in FIGS. 9 and 10, the springs 80 retain the pad legs 78 in outer positions with the pin 72 at the back of the slot 70 in which position the padlegs 78 are spaced from each other a distance that is greater than the width of the quarter of the shoe assembly. The engagement of the pad bight 68 with the heel end extremity of the shoe assembly causes the slot 70 to move rearwardly along the pin 72 and the pad legs 78 to move inwardly against the force of the springs until the pad face 69 firmly presses the shoe quarter against the last with the stripper surface bearing against the last beneath the heel end of the topline 195 (FIG. 13) of the shoe quarter. In pressing itself against the shoe assembly, the pad 64, together with the shaft 46, swings to some extent about the axis of the shaft 46 with the tang 50 departing from the bolt 52.

The motor is retained in its idle position by pressurized air passing from the line through a line 196, a pressure regulator 198 which reduces the pressure to less than full line pressure, a line 200, a valve 202, and a line 204 to the motor 110. The shifting of the valves 182 and 184 by the operator also enables pressurized air to pass from the line 186 through a pilot line 203 to the valve 202 to shift the valve 202. Upon release, by the operator, of the valves 182 and 184, the valve 202 remains in shifted position due to inertia. The shifting of the valve 202 cuts off the flow of air to the motor 110 through the line 204, enables the air in the motor 110 to vent to atmosphere through the line 204 and causes pressurized air to pass from the valve 202 through a line 206 to the motor 1 10. This enables the motor 110 to be operated to move the carriage 122 downwardly and rearwardly along the beam 102 under the yieldable force of the pressurized air of the motor 110 until the bar 142 engages the vamp portion of the shoe bottom with the grippers 136 located outwardly of the sides of the shoe. Due to the yieldable force'exerted by the motor 110, the position of engagement of the bar 142 with the shoe bottom and the location of the grippers when the bar 142 is engaged with the shoe bottom is dependent on the size and style of the shoe.

At this time the machine parts are engaging the shoe assembly as shown in FIGS. 13 and 14.

The bar 142 is so mounted in the flanges 146 that it can rise a limited amount in the flanges in response to its engagement with the bottom of the shoe. Such rise causes a valve 208 (FIG. 2 and 11) to shift. The shifting of the valve 208, by means not shown, causes the motor 22 to operate under full line pressure to raise its piston rod 24 to thus raise the back of the bell crank 18 and lower the front of the bell crank 18. The raising of the back of the fell crank causes the pad 64 and the stripper plate 88 to rise and the lowering of the front of the bell crank causes the beam 102 to swing downwardly about the axis of the shaft 104.

The rise of the pad 64, while it is still being pressed against the quarter of the shoe by the relatively high pressure of the motor 32, enables the pad to raise the quarter of the shoe upwardly of the last until the topline of the shoe clears the bottom of the last. This lifting action of the pad is augumented by the stripper surface 90 of the plate 88 bearing against the last and the rising topline under the yieldable force of the spring 98. During this rise the pad 64 and the stripper plate 88 swing about the axis of the shaft 46 to enable them to conform to the shape of the heel end of the shoe assembly.

The descent of the beam 102 causes the bar 142 to descend under full line pressure to cause the last 158 to break by lowering the last vamp 164 about the hinge 166 and thus loosen the shoe on the last. During the descent of the beam 102 and the rise of the pad 64, the shaft 104 rotates in the

beams

10 and 11. Referring to FIGS. 2 and5, a pair of

valves

210 and 212 are mounted to the beam 10. A pair of

studs

214 and 216 are rigidly connected to the end of the shaft "104 that is rotatably mounted in the beam 10. The stud 214 is in intersecting relationship with the valve 210 and the stud 216 is in intersecting relationship with the valve 212. As a result, at about the time the quarter of the shoe is raised clear of the last by the pad 64 and the stripper plate 88, the valve 210 is shifted and then the valve 212 is shifted.

The motor 140 is retained in its idle position by pressurized air passing from the line 170, at reduced pressure, through a line 218, a pressure regulator 220, a line 222, a valve 224, and a line 226 to the motor 140. The shifting of the valve 210 enathrough the valve 202 and causes bles pressurized air to pass from the line 170 through a line 227, the valve 210 and a pilot line 228 to the valve 224 to shift the valve 224. The shifting of the valve 224 enables the air in the line 226 to vent to atmosphere through the valve 224 and causes pressurized air to pass from the valve 224 through a line 230 to the motor 140 to actuate the motor 140 to move the grippers 136 inwardly to press against the sides of the shoe.

The shifting of the valve 210 also enables pressurized air to pass from the line 228 through a pilot line 232 to the valve 190 to thereby shift the valve 190 and thus cut off the flow of high pressure air passing to the motor 32 through the line 192. With this shifting of the valve 190, pressurized air flows from the valve 190 through a line 234, a pressure regulator 236 which is set at a lower pressure than the pressure regulator 174, a line 238, the shuttle valve 193 and the line 194 to the motor 32 to cause the motor 32 to urge the pad 64 forwardly under relatively low pressure.

The shifting of the valve 212 pressurized air to pass from the line 170 through a line 240, the valve 212 and a pilot line 242 to the valve 202 to shift the valve 202. The shifting of the valve 202 enablesthe air in the line 206 to be vented to atmosphere pressurized air to again pass to the motor 110 through the line 204 to operate the motor 110 to move the carriage 122, together with the bar 142 and the grippers 136, forwardly along the beam 102 to the idle position of the carriage 122 on the beam 102.

From the foregoing it can be seen that, at about the time the pad 64 and the stripper plate 88 have raised the quarter of the shoe clear of the broken last, the grippers 136 are closed on the sides of the vamp of the shoe to grip it, as shown in FIG. 15, and are then moved forwardly to remove the shoe from the last. This action of the grippers 136 is augmented by the pad 64 which is caused by the motor 32 to push the quarter of the shoe forwardly over the bottom of the last after it has cleared the bottom of the last. The pad 64 is pressed by the motor 32 against the quarter of the shoe assembly under relatively high pressure so that sufficient pressure to raise the quarter of the shoe off the last can be applied. After the quarter of the shoe has been raised clear of the last, the pad 64 is moved forwardly by the motor 32 under relatively low pressure to prevent the pad from crushing the sides of the shoe quarter which is now unsupported by the last. Since the bar 142 is moved forwardly together with the grippers 136, the bar does not interfere with the removal of the shoe from the last by the grippers.

As the pad 64 moves forwardly over the bottom of the last, the cam follower roll 56 engages and rides along the cam 156. This constrains the lower limit of the arc of swinging movement of the pad 64 and the stripper 88 about the axis of the shaft 46 to a level that is determined by the engagement of the cam follower roll 56 with the cam 156. This level is higher than the lower limit of swinging movement previously available to the pad 64 and the stripper 88 that was prescribed by the engagement of the tail 50 with the bolt 52 (FIG. 7). Should the coaction between the cam follower roll 56 and the cam 156 cause the bolt 58 to engage the projection 44, the piston rod 36 moves outwardly (leftwardly in FIG. 1) of the motor 32. If the pad 64 and the stripper 88 had continued to swing downwardly about the axis of the shaft 46 to the extent permitted by the engagement of the tail 50 with the bolt 52 after they had cleared the quarter of the last, they would have intersected the bottom of the quarter of the last, the pad would have crushed the shoe quarter, and the pad would not have been effective to push the shoe quarter forwardly over the bottom of the last. This undesirable effect is prevented by the coaction of the roll 56 and the cam 156.

The return of the carriage 122 to its idle position on the beam102 causes a cam 244 (FIG. 6) mounted to the carriage to momentarily operate an actuator 245 of a valve 246 to momentarily shift the valve 246. This enables pressurized air to pass from the line 170 through a line 248, the valve 246 and a pilot line 250 to the

valves

178, 190 and 224 to shift these valves to their idle positions and thus cause the motor 32 to return the pad 64 and stripper plate 88 rearwardly to their idle position and cause the motor to move the grippers 136 away from each other to their idle position. By means not shown, the shifting of the valve 246 also causes the motor 22 to lower the pad 64 and stripper plate 88 to their idle position and raise the beam 102 to its idle position. in addition, by means not shown, the shifting of the valve 246 causes the motor 149 to reciprocate the piston rod .150 to first raise and then lower the bar 154. The valve actuator 245 is so constructed that it is not actuated to shift the valve 246 during the rearward movement of the carriage 122 at the beginning of a machine cycle.

From the foregoing it can be seen that the return of the carriage 122 to its idle position causes the grippers 136 to release the shoe, which has now been removed from the last, so that the shoe may fall into a container 252 (FIGS. 1 and 2), enables the roll 154 to engage the last and close it about the hinge 166 to its original position and causes the machine parts to return to their idle positions to complete the machine cycle.

We claim:

1. A machine for disassembling a shoe from a last whose vamp and quarter are movably connected to each other comprising: a support for supporting bottom-up the quarter of a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a bar, located forwardly of the support, mounted for heightwise movement; a pair of grippers, located forwardly of the support, mounted for inward-outward and forward-rearward movement; a pad, located rearwardly of the support, mounted for heightwise movement; means for initially locating the bar in an upper position above the bottom of the shoe assembly vamp; means for initially locating the grippers in rearward and outer positions wherein the grippers are outward of and spaced from the sides of the shoe assembly; means for initially locating the pad in a lower position wherein it is pressing against the shoe quarter; means for concomitantly lowering the bar to cause the bar to break the last by moving its vamp downwardly and raising the pad to raise the shoe quarter above the last bottom; means for thereafter causing the grippers to move inwardly to grip the sides of the shoe; and means for thereafter causing the grippers to move forwardly to remove the shoe from the broken last. 7

2. The machine as defined in claim 1 further comprising: means so constructing the pad as to cause it to move forward and push the whoe quarter forwardly after it has raised the shoe quarter above the last bottom to thereby augment the forward movement of the grippers in removing the shoe from the last.

3. The machine as defined in claim 1 further comprising: control means actuable to effect the inward and forward movement of the grippers; and means responsive to the rising movement of the pad to actuate the control means.

4. The machine as defined in claim 3 further comprising: means so constructing the pad as to cause it to move forwardly and push the shoe quarter forwardly after it has raised the shoe quarter above the last bottom to thereby augment the forward movement of the grippers in removing the shoe from the last.

5. The machine as defined in claim 1 further comprising: means mounting the pad for forward-rearward movement; a yieldable force applying means actuable to yieldably urge the pad forwardly; and means for actuating the force applying means while the pad is in its lower position to thereby yieldably press the shoe quarter against the last while the pad is rising to enable the pad to raise the shoe quarter above the last bottom and to enable the pad to move forwardly and push the shoe quarter forwardly after it has raised the shoe quarter above the last bottom to thereby augment the forward movement of the grippers in removing the shoe from the last.

6. The machine as defined in claim control means actuable to effect the inward and forward movement of the grippers; and means responsive to the rising movement of the pad to actuate the control means.

5 further comprising:

7. The machine as defined in claim- 1 further comprising: means mounting the bar and the grippers for unitary forwardrearward and heightwise movement whereby said lowering of the bar also effects lowering of the grippers to properly locate the grippers in relation to the sides of the shoe assembly and the forward movement of the grippers moves the bar forwardly so that the bar will not interfere with the disassembly of the shoe from the broken last.

8. The machine as defined in claim 7 further comprising: a beam, extending forwardly of the support, mounted for heightwise movement; a carriage mounted to the beam for forward-rearward movement; means mounting the bar and the grippers to the carriage to thereby provide for said unitary forward-rearward and heightwise movement of the bar and the grippers; means for initially locating the beam in an upper position and the carriage in a forward position in the beam to thereby locate the bar and the grippers in their initial locations; means for thereafter lowering the beam to thereby effect the unitary lowering of the bar and the grippers; and means, effective after the grippers have moved inwardly to grip the sides of the shoe, for moving the carriage forwardly to thereby effect the unitary forward movement of the bar and the grippers. I

9. The machine as defined in the claim 8 further comprising: a connection between the beam and the pad so constructed as to locate the pad in a lower position when the beam is in its upper position and to raise the pad concomitantly with the lowering'of the beam; means mounting the pad for forwardrearward movement; and means for actuating the force applying means while the pad is in its lower position to thereby yieldably press the pad against the shoe quarter while the pad is rising to enable the pad to raise the shoe quarter above the last bottom and to enable the pad to move forwardly and push the shoe quarter forwardly after it has raised the shoe quarter above the last bottom to thereby augment the forward movement of the grippers inremoving the shoe from the last.

10. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a pad, located rearwardly of the support, mounted for heightwise movement; a yieldable force applying means, actuable under a relatively high or a relatively low pressure, to yieldably urge the pad forwardly; means for initially locating the pad in a lower position; means for actuating the force applying means under the relatively high pressure while the pad is in the lower position to thereby press the shoe quarter against the last; means for raising the pad to enable the pad'to raise the shoe quarter above the last bottom and to enable the pad to move forwardly and push the shoe quarter forwardly over the bottom of the last after it has raised the shoe quarter above the last bottom; and means, effective when the pad has raised the shoe quarter above the last bottom, to actuate the force applying means under the relatively low pressure so that the pad will not crush the shoe quarter as it pushes it forwardly.

11. The machine as defined in claim 10 further comprising: means responsive to the rise of the pad for actuating the force applying means under the relatively low pressure.

12. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly,

last bottom, the swinging mounting of the pad enabling the pad to swing through said arc and conform to the shape of the last during the raising of the shoequarter above the last bottom; an constraining means, effective when the pad is moving forwardly to push the shoe quarter over the last bottom, to cause the arc of swinging movement of the pad to have a lower limit that is higher than said prescribed lower limit so that the pad will not intersect the last bottom when it is moving forwardly.

13. The machine as defined in claim 12 wherein the means pivotally mounting the pad to the bracket comprises: a shaft rotatably mounted to the bracket; and means securing the pad to the shaft; and wherein the constraining means comprises: a cam follower secured to the shaft; and a cam so located forwardly of the cam follower as tobe intersected by the cam follower when the pad is moving forwardly to push the shoe quarter over the last bottom.

14. The machine as defined in claim 13 wherein the vamp and quarter of the last are movably connected to each other and further comprising: a beam extending forwardly of the support mounted for heightwise movement; a bar mounted to the beam; means for initially locating the beam in an upper position; means for lowering the beam concomitantly with the raising of the bracket to cause the bar to break the last by moving its vamp downwardly; and means mounting the cam to the beam.

15. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe as sembly quarter extending rearwardly; a pad, located rearwardly of the support, having a front face; a stripper located below the pad and extending forwardly of said front face; means mounting the pad and the I stripper for unitary heightwise and forward-rearward movement; means for initially locating thepad and the stripper in a lower position;

formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a bracket mounted for heightwise movement and for forward-rearward movement; a pad located rearwardly of the support having a front face adapted to engage the shoe assembly; means mounting the pad to the bracket, rearwardly of the front face, for heightwise swinging movement in an are having a prescribed lower limit; means for initiallylocating the bracket in a lower position; means for concomitantly yieldably urging the bracket forwardly and raising the bracket to enable the front face of the pad to raise the shoe quarter above the last bottom and then move forwardly to push the shoe quarter forwardly over the means for yieldably urging the pad and the stripper forwardly so that said front face is pressed against the shoe quarter and the stripper bears against the last beneath the topline of the shoe quarter; and means for raising the pad and the stripper to cause the action of said front face pressing against the shoe quarter and the action of the stripper bearing against the last and said topline to raise the shoe quarter above the last bottom. I v

16. The machine as defined in claim 15 further comprising: a lip extending upwardly of the stripper rearwardly of the pad; and means for yieldably urging the stripper forwardly to cause the lip to engage the back of the pad.

17. A machine for disassembling a shoe from a last whose vamp and quarter are movably connected to each other comprising: a support for supporting bottom-up the quarter of a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a first bar, located forwardly of the support, mounted for movement towards and away from the bottom of the forepart of the shoe assembly, that includes a heightwise movement; a pad, located rearwardly of the support, mounted for heightwise movement; a second bar, located forwardly of the support and below the first bar, mounted for heightwise movement; means for initially locating the first bar in a position above and proximate to the bottom of the shoe assembly vamp; means for initially locating the second bar in a lower position below the top of the shoe assembly vamp; means for initially locating the pad in a lower position wherein it is pressing against the shoe quarter; means for concomitantly lowering the first bar to cause it to break the last by moving its vamp downwardly and raising the pad to raise the shoe quarter above the last bottom whereby the shoe may be removed from the last; means for thereafter moving the first bar away from the bottom of the broken last; and means for thereafter raising the second bar to engage the bottom of the forepart of the last and close the last.

18. The machine as defined in claim 17 wherein the first bar is mounted for forward-rearward movement in addition to heightwise movement; and further comprising: means for initially positioning the first bar in a rearward and upper position to thereby locate the first bar in the position above and proximate to the bottom of the shoe assembly; and means, effective after the first bar has been lowered to break the last, after the pad has been raised to raise the shoe quarter above the last bottom, and before the second bar is raised, to move the first bar rearwardly and away from the last to thereby move the first bar away from the bottom of the broken last.

19. The machine as defined in claim 8 further comprising: A

pair of grippers, located forwardly of the support, mounted for inward-outward movement and for unitary movement with the first bar whereby said lowering of the first bar also effects lowering of the grippers and said rearward movement of the first bar also effects rearward movement of the grippers; means for initially locating the grippers in outer positions wherein the grippers are outward of and spaced from the sides of the shoe assembly; and means for causing the grippers to move inwardly to grip the sides of the shoe assembly after the first bar, together with the grippers, has been lowered and before the first bar, together with the grippers, is moved rearwardly whereby the rearward movement of the first bar also causes the grippers to remove the shoe from the broken last.

l i i I

Claims

1. A machine for disassembling a shoe from a last whose vamp and quarter are movably connected to each other comprising: a support for supporting bottom-uP the quarter of a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a bar, located forwardly of the support, mounted for heightwise movement; a pair of grippers, located forwardly of the support, mounted for inward-outward and forwardrearward movement; a pad, located rearwardly of the support, mounted for heightwise movement; means for initially locating the bar in an upper position above the bottom of the shoe assembly vamp; means for initially locating the grippers in rearward and outer positions wherein the grippers are outward of and spaced from the sides of the shoe assembly; means for initially locating the pad in a lower position wherein it is pressing against the shoe quarter; means for concomitantly lowering the bar to cause the bar to break the last by moving its vamp downwardly and raising the pad to raise the shoe quarter above the last bottom; means for thereafter causing the grippers to move inwardly to grip the sides of the shoe; and means for thereafter causing the grippers to move forwardly to remove the shoe from the broken last.

6. The machine as defined in claim 5 further comprising: control means actuable to effect the inward and forward movement of the grippers; and means responsive to the rising movement of the pad to actuate the control means.

7. The machine as defined in claim 1 further comprising: means mounting the bar and the grippers for unitary forward-rearward and heightwise movement whereby said lowering of the bar also effects lowering of the grippers to properly locate the grippers in relation to the sides of the shoe assembly and the forward movement of the grippers moves the bar forwardly so that the bar will not interfere with the disassembly of the shoe from the broken last.

8. The machine as defined in claim 7 further comprising: a beam, extending forwardly of the support, mounted for heightwise movement; a carriage mounted to the beam for forward-rearward movement; means mounting the bar and the grippers to the carriage to thereby provide for said unitary forward-rearward and heightwise movement of the bar and the grippers; means for initially locating the beam in an upper position and the carriage in a forward position in the beam to thereby locate the bar and the grippers in their initial locations; means for thereafter lowering the beam to thereby effect the unitary lowering of the bar and the grippers; and means, effective after thE grippers have moved inwardly to grip the sides of the shoe, for moving the carriage forwardly to thereby effect the unitary forward movement of the bar and the grippers.

9. The machine as defined in the claim 8 further comprising: a connection between the beam and the pad so constructed as to locate the pad in a lower position when the beam is in its upper position and to raise the pad concomitantly with the lowering of the beam; means mounting the pad for forward-rearward movement; and means for actuating the force applying means while the pad is in its lower position to thereby yieldably press the pad against the shoe quarter while the pad is rising to enable the pad to raise the shoe quarter above the last bottom and to enable the pad to move forwardly and push the shoe quarter forwardly after it has raised the shoe quarter above the last bottom to thereby augment the forward movement of the grippers in removing the shoe from the last.

10. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a pad, located rearwardly of the support, mounted for heightwise movement; a yieldable force applying means, actuable under a relatively high or a relatively low pressure, to yieldably urge the pad forwardly; means for initially locating the pad in a lower position; means for actuating the force applying means under the relatively high pressure while the pad is in the lower position to thereby press the shoe quarter against the last; means for raising the pad to enable the pad to raise the shoe quarter above the last bottom and to enable the pad to move forwardly and push the shoe quarter forwardly over the bottom of the last after it has raised the shoe quarter above the last bottom; and means, effective when the pad has raised the shoe quarter above the last bottom, to actuate the force applying means under the relatively low pressure so that the pad will not crush the shoe quarter as it pushes it forwardly.

12. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a bracket mounted for heightwise movement and for forward-rearward movement; a pad located rearwardly of the support having a front face adapted to engage the shoe assembly; means mounting the pad to the bracket, rearwardly of the front face, for heightwise swinging movement in an arc having a prescribed lower limit; means for initially locating the bracket in a lower position; means for concomitantly yieldably urging the bracket forwardly and raising the bracket to enable the front face of the pad to raise the shoe quarter above the last bottom and then move forwardly to push the shoe quarter forwardly over the last bottom, the swinging mounting of the pad enabling the pad to swing through said arc and conform to the shape of the last during the raising of the shoe quarter above the last bottom; an constraining means, effective when the pad is moving forwardly to push the shoe quarter over the last bottom, to cause the arc of swinging movement of the pad to have a lower limit that is higher than said prescribed lower limit so that the pad will not intersect the last bottom when it is moving forwardly.

13. The machine as defined in claim 12 wherein the means pivotally mounting the pad to the bracket comprises: a shaft rotatably mounted to the bracket; and means securing the pad to the shaft; and wherein the constraining means comprises: a cam follower secured to the shaft; and a cam so located forwardly of the cam follower aS to be intersected by the cam follower when the pad is moving forwardly to push the shoe quarter over the last bottom.

15. A machine for disassembling a shoe from a last comprising: a support for supporting bottom-up a shoe assembly, formed of the last having the shoe mounted thereon, with the shoe assembly vamp extending forwardly and the shoe assembly quarter extending rearwardly; a pad, located rearwardly of the support, having a front face; a stripper located below the pad and extending forwardly of said front face; means mounting the pad and the stripper for unitary heightwise and forward-rearward movement; means for initially locating the pad and the stripper in a lower position; means for yieldably urging the pad and the stripper forwardly so that said front face is pressed against the shoe quarter and the stripper bears against the last beneath the topline of the shoe quarter; and means for raising the pad and the stripper to cause the action of said front face pressing against the shoe quarter and the action of the stripper bearing against the last and said topline to raise the shoe quarter above the last bottom.

19. The machine as defined in claim 8 further comprising: A pair of gripperS, located forwardly of the support, mounted for inward-outward movement and for unitary movement with the first bar whereby said lowering of the first bar also effects lowering of the grippers and said rearward movement of the first bar also effects rearward movement of the grippers; means for initially locating the grippers in outer positions wherein the grippers are outward of and spaced from the sides of the shoe assembly; and means for causing the grippers to move inwardly to grip the sides of the shoe assembly after the first bar, together with the grippers, has been lowered and before the first bar, together with the grippers, is moved rearwardly whereby the rearward movement of the first bar also causes the grippers to remove the shoe from the broken last.