Cement lasting the side and heel portions of a shoe assembly

Abstract

A machine that includes nozzles that move along and apply cement in the corners between the side and heel portions of an upper mounted on a last and the corresponding portions of an insole located on the last bottom and that also includes side wipers and heel wipers that respectively wipe the side and heel portions of the upper margin against the insole and attach the wiped margin portions of the insole by means of the cement.

Description

This is a division of application Ser. No. 467,522 filed May 6, 1974.

BACKGROUND OF THE INVENTION

U.S. patent application Ser. No. 386,129 filed Aug. 6, 1973part front of the machine (downwardly in FIG. 23).

The depression of the left control knob 484 also actuates the motor 270 to project the piston rod 272 forwardly to thus move the hold-down slide 268 forwardly, thereby moving the hold-down 278 forwardly over the bottom of the shoe assembly 476. This is followed by an actuation of the motor 274 to project its piston rod 276 forwardly to thus lower the hold-down 278 to a position wherein its bottom is at substantially the same elevation as the plane of the bottom of the heel wipers 256. After this, the motor 16 is actuated under relatively low pressure to project its piston rod 18 upwardly to thereby raise the support 40 until the heel seat portion 490 (FIG. 31A) of the insole bears against the bottom of the hold-down 278 to thus locate the insole heel seat portion 490 in a plane substantially level with the plane of the bottoms of the heel wipers 256 in a plane parallel to the plane of movement of the heel wipers 256. After this, the motor 30 is actuated to move the cylinder 32 and the piston rod 34 away from each other to thereby force the brake fingers 36 against the flange 38 so as to lock the support 40 in working position in the machine in the position it had assumed pursuant to the rise of the support 40 by the motor 16 to bring insole heel seat portion 490 against the bottom of the hold-down 278. This is followed by an actuation of the motor 274 to raise the hold-down 278 to its idle position and an actuation of the motor 270 to return the hold-down slide 268 to its idle position.

After the hold-down slide 268 has returned to its idle position, the motor 166 is activated to move the main slide plate 164 to a forward working position and thereby carry the heel clamp pad 212 and the heel wipers 256 forwardly from their out-of-the-way positions until the bight 214 of the heel clamp pad 212 abuts the heel end of the shoe assembly 476, thereby terminating forward motion of the heel clamp pad 212. The main slide plate 164 and the heel wipers 256 carried thereon continue to move forwardly until the collar 234 (FIG. 15) on the shaft 226 abuts the depending leg 236 of the heel clamp slide 172. Simultaneously with the abutment of the collar 234 and the depending leg 236, the plunger 240 of the pilot valve 222 is depressed by reason of its abutment with the stop 238 to thereby actuate the pilot valve 222. The actuation of the pilot valve 222, by means of a control arrangement shown in U.S. Pat. No. 3,436,779, serves to lock the piston rod 168 of the motor 166 in position to thereby lock the main slide plate 164 in its forward position and also causes actuation of the motors 180.

The actuation of the motors 180 causes the heel clamp driving mechanism shown in FIGS. 10 and 13 to operate in the manner described above to move the heel clamp pad 212 to the FIG. 32 position. The legs 216 of the head clamp pad 212 are initially stretched forwardly towards the toe of the shoe assembly and are subsequently swung inwardly until they engage the side walls of the shoe assembly in the regions of the breast lines, so that all of the inner wall of the pad 212 engages the heel of the shoe assembly.

After the hold-down slide 268 has been returned to its idle position as described above, the momentary depression of the left control knob 484 causes the motors 74 to be so actuated as to project their piston rods 76 inwardly to thus move the bases 78, together with the sets of lasting units 72, inwardly to positions wherein bolts 492 (FIG. 6) mounted on the bases 78 engage flanges 494 mounted to the tables 52. As a result, the lasting instrumentalities 126 are positioned close to but not in engagement with the shoe assembly. This is followed by an operation of the motors 96 so as to admit pressurized air under relatively high pressure to the blind ends of these motors to thereby enable each piston rod 98 to cause a lasting intrumentality 126 to move inwardly with respect to its support 82 with its inner bracket 90 sliding on the support until the lasting strap bottom segment 134a engages and meets resistance from the shoe assembly 476. At this time, since there is no pressurized air in the motors 150, the piston rods 158 are dragged inwardly of the motors 150 during the inward movements of the lasting instrumentalties 126. The lasting strap bottom segments 134a engage the side portions of the shoe assembly 476, between its toe and heel portions, wherein the margin 496 of the upper 482 extends away from the insole as shown in FIG. 33. The rigid bottom segment 134a straddles the top line 498 of the upper so as to clamp the top line against the last 478. Upon engagement of a bottom segment 134a with the shoe assembly 476, the continued force applied by the piston rod 98, through the lever limb 106, causes the lever 110 to swing inwardly about its pivot pin 112. The inward swinging of the lever 110, through the pin and the slot connection 138 and 140, causes the outer presser strap top segement 130b to be forced inwardly thus flexing inwardly the outer presser strap middle segment 130c. This is followed by an inward swinging of the lever 102 about its pivot pin 108 which, through the lever limb 104 and the link 146, causes the inner presser strap top segment 132b to be forced inwardly thus flexing inwardly the inner presser strap middle segment 132c.

It is desired, during the lasting of the shoe, that the top line 498 of the side portions of the upper 482 be clamped against the last 478 and remain stationary on the last while the side portions of the upper extending from the top line towards the last bottom and the insole 480 have any slack and wrinkles taken out and then be pressed tightly against the last. This is accomplished by virtue of the fact that the bottom segment 134a first rigidly clamps the top line 498 to the last after which the outer presser strap top segment 130b is moved against the shoe assembly followed by a movement of the inner presser strap top segment 132b against the shoe assembly. The movement of the pressure straps against the shoe assembly causes the lasting strap middle segment 134c to flex and press the upper between the top line and the insole bottom against the last while conforming to the shape of the last. Since the outer presser top segment 130b is lower than the inner pressure strap segment 132b, the pressure applied by the lasting strap middle segment 134c against the upper commences at its bottom proximate to its rigid bottom segment 134a and works its way upwardly. Therefore, the upper is progressively urged upwardly of the top line as it is pressed against the last thus pressing the upper against the last in a wrinkle free manner. At the completion of the pressing of the upper against the last by the lasting strap middle segment 134c, the lasting strap top segment 134b extends upwardly of the insole 480 and outwardly of the upper margin 496 as indicated in FIG. 33.

From the foregoing it can be seen that, at the time the motors 96 are actuated to move their piston rods 98 inwardly, the lasting instrumentalties must be on opposite sides of the shoe assembly 476 in positions that are close to but not in engagement with the shoe assembly and that these positions are determined by the engagement of the bolts 492 with the flanges 494.

When operating on a left foot shoe assembly, with the toe rest 24 on the longitudinal center line of the machine, the left side of the shoe assembly (the upper side in FIG. 31A) projects further from the longitudinal center line of the machine than the right side of the shoe assembly (the lower side in FIG. 31A). Therefore, with a left foot shoe assembly and with the toe rest 24 located on the longitudinal center line of the machine, when the motors 74 have completed the inward movement of the lasting instrumentalties 126 due to the engagement of the bolts 492 with the flanges 494, the lasting instrumentalties 126 on the left side (FIG. 1) of the machine will be closer to its associated side of the shoe assembly 476 than the lasting instrumentalties on the right side of the shoe assembly. In some instances, the lasting instrumentalties on the left side of the machine may actually be in engagement with the shoe assembly. It is for the purpose of avoiding this undesirable condition that the toe end of the shoe assembly 476 was caused to swing rightwardly about the axis of the last pin 20, by the motor 488.

As shown in FIG. 31A, the right side of the last 478 of the left foot shoe assembly 476 (the bottom side as seen in FIG. 31A) has a reentrant portion 500 that curves inwardly of and between the toe and heel portions of the side of the last. The other side of the last has a much less pronounced reentrant portion.

In addition to the operation of the motor 96, after the engagement of the bolts 492 with the flanges 494 pressurized air is sent under relatively low pressure to the blind ends of the motors 150 on the right side of the machine as seen in FIG. 1 to thereby force the piston rods 158 of these motors inwardly at a lower pressure than the pressure that had been applied to the motors 96. The pressurized air is admitted to the blind ends of these motors 150 at the same time as it is admitted to the blind ends of the motors 96. However, due to the pressure of the air entering these motors 150 being lower than the pressure of the air entering the motors 96, the actuation of these motors 150 to force their piston rods 158 inwardly is delayed until the outer presser straps 130 have been flexed inwardly to cause the upper 482 to conform snugly to the shape of the last 478 and to press the upper against the last.

The actuation of the right motors 150, as seen in FIG. 1, forces the associated lasting strap top segments 134b on the right side of the machine, as seen in FIGS. 1 and 33, inwardly under the relatively low pressure to provide an inwardly directed back-up force that folds each lasting strap top segment 134b downwardly about its juncture with its lasting strap middle segment 134c so that the top segment 134b forms an acute angle with respect to the insole 480, this being permitted by the flexible connection provided by the ball and socket connections 154, 156. This causes the upper margin 496 on the side of the shoe assembly having the reentrant portion 500 to be folded downwardly about the periphery of the insole, part way towards the insole, as indicated in FIG. 33, to form an acute angle with the insole.

The shoe assembly engaging parts are now in the position shown in FIG. 32 with the pad 212 pressing the heel portion of the upper 482 againts the last 478 and the lasting instrumentalties 126 pressing the side portions of the upper margin against the last, the lasting instrumentalties 126 being located forwardly of the pad 212 with substantially no space between the rearmost lasting instrumentalties 126 and the fronts of the pad legs 216.

The motor 295 is now actuated so as to cause the cables 302 to move the slide 294 and the parts carried thereby, including the nozzles 396, forwardly until the valve actuating rod 314 engages the stop lug 334. The stop lug 33 is so located that it is engaged by the rod 314 at a location such that the nozzles 396 are over the widest part of the shoe assembly, indicated by number 502 in FIG. 31A. The engagement of the rod 314 by the lug 334 causes the valve 310 to open.

Referring to FIG. 30, the motors 430 are maintained in their idle positions by pressurized air passing from a source 504 through a line 506, a valve 508 and a line 510 to the blind ends of these motors. The opening of the valve 310 sends air from the source 504 through a line 512, the valve 310 and a pilot line 514 to the left side of the valve 508 to shift the valve 508. This shifting of the valve 508 vents the air from the blind ends of the motors 430 through the line 510 and the valve 508 and enables pressurized air to pass from the valve 508 through a line 516 to the rod ends of the motors 430 to thereby retract the piston rods 434 into the motors 430 and thus cause the nozzles 396 to be lowered under the yieldable force of the pressurized air in the motors 430 until they engage the insole 480 in the general region indicated by number 502 in FIG. 31A wherein the nozzles are spaced from the upper margin 496 and the insole periphery laterally of the side portions of the upper margin and the corresponding portions of the insole periphery that are between the toe and heel portions of the shoe assembly.

As described above, the toe portion of the shoe assembly 476 was swung rightwardly by the motor 488. In order to ensure that the nozzles engage the insole 480 inwardly of the upper margin 496, the nozzles were also swung rightwardly. As described above, by the admission of the relatively high pressure air to the left motor 378 as seen in FIG. 1 which is the top motor 378 in FIG. 23.

The motor 418 is maintained in its idle condition by pressurized air passing from the source 504 through a valve 518 and a line 520 to the motor 418. The lowering of the nozzles 396 causes the valves 436, which are normally closed, to open. The opening of the valves 436 enables pressurized air to pass from the source 504 through the valves 436 and a pilot line 522 to the left side of the valve 518 to shift this valve. The shifting of the valves 518 enables the air in the line 520 to vent to atmosphere through the valve 518 and enables pressurized air to flow from the valve 518 through a line 524, a valve 526, a line 528, a shuttle valve 530 and a line 532 to the motor 418 to so actuate the motor 418 as to move the yokes 414 inwardly under the yieldable force of the pressurized air operating under relatively high full line pressure in the line 532 and thus move the nozzles 396 outwardly under relatively high pressure along the insole 480 into the angle between the insole and the upper margin 496 until the nozzles reach the corners between the insole and the upper margin as indicated in FIG. 33.

It is desirable that the nozzles 396, in moving into these corners, first move downwardly against the insole and then move outwardly along the insole into the corners to ensure that the nozzles will not tangle with the upper margin which, as indicated in FIG. 33, is overhanging the insole 480 and extending inwardly of the insole periphery at this time, and to ensure that the nozzles do not move outwardly of the upper margin before moving downwardly. This desirable sequence is ensured by causing the outward movement of the nozzles to take place in response to the downward movement of the nozzles which causes the opening of the valves 436, the opening of the valves 436 in turn causing the outward movement of the nozzles to take place.

By means not shown, the opening of the valves 436 also shuts off the flow of pressurized air to the motors 378 so that the return springs 534 (FIG. 24) of these motors retract their piston rods 380 out of engagement with the bolt heads 276 to thereby enable the motor 418 to move the nozzles 396 outwardly.

The aforementioned shifting of the valve 518 that had caused the pressurized air to flow through the line 524 to the motor 418 also enabled pressurized air to flow from the line 524 through a pilot line 536 and a pneumatic timer 538 in the line 536 to the left side of a valve 540 to shift the valve 540 after a time delay provided by the timer 538. The shifting of the valve 540 enables pressurized air to flow from the source 504 through the valve 540 and a pilot line 542 to the left side of the valve 526 to shift the valve 526. The shifting of the valve 526 cuts off the flow of pressurized air through the line 528 and enables pressurized air to flow under relatively low pressure from the valve 526 through a line 544, a pressure regulator 546 in the line 544 set a pressure lower than the pressure of the air that had flowed through the line 528, the shuttle valve 530 and the line 532 to the motor 418 to cause the motor 418 to urge the nozzles 396 outwardly into the corners between the insole 480 and the upper margin 496 at a lower pressure than they had been originally urged outwardly.

Now the motor 328 is acutated to lower the stop lug 334 and disengage it from the valve actuating rod 314 thus causing the valve 310 to close the enabling the motor 295 to again move the plate 294 and the nozzles 396 forwardly. During this resumption of the forward movement of the nozzles 396, they are resiliently urged downwardly against the insole 480 by the motors 430 and are resiliently urged outwardly against the upper margin 496 under relatively low pressure by the motor 418 so that they are bearing against the insole and the upper margin when they stop their forward motion as described below. The nozzles 396 are urged outwardly against the upper margin 496 under relatively low pressure during their forward movement and during their below described rearward movement so that they will not tear or gouge the margin during these movements. The nozzles 396 are initially urged outwardly under relatively high pressure so as to rapidly move them outwardly into the corners between the upper margin 496 and the insole 480 thereby ensuring that they are in the corners when the nozzles resume their forward movement and and when the nozzles meet resistance to continued forward movement at the boundaries between the wiped toe portion of the upper margin and the unwiped side portions of the upper margin as described below.

As shown in greater detail in application Ser. No. 386,129, the machine control is so constructed that, in response to the lowering of the stop lug 334 to enable the slide plate 294 and the nozzles 396 to resume their forward movement, the motor 295 is caused to reverse its movement and move the slide plate 294 and the nozzles 396 rearwardly. The control is so constituted that the nozzles 396, at the conclusion of their forward movement, are located at the boundaries between the wiped toe portion of the upper margin and the unwiped side portions of the upper margin. Since the block 368, together with the nozzles 396, can swing about the axis of the post 370, the block, together with the nozzles, swing about this axis in one direction or the other should one nozzles arrive at this boundary before the other.

At the same time as the slide plate 294 and the nozzles 396 commence their rearward movement, pressurized air is caused to flow, by means described below, to the blind end of the motor 350 to thereby move the plunger 354 downwardly at a regulated speed past the orifice 344 and force cement through the passage means 398, the check valves 404 and the passages 400 in the nozzles 396 into the angle between the upper margin 496 and the insole 480.

The aforementioned opening of the valve 310 caused pressurized air to flow into the bottom of the cavity 458 to thereby raise the cylinder 456 to bring the stop member 470 and the valve assembly 466 into intersecting relationship with the cam 474. At this time, the cam 474 is forward of the stop surface 470 and the valve assembly 466 so that it does not intersect them during the forward movement of the plate 294. The plate 294, together with the nozzles 396, continues its rearward movement until the back of the cam 474 engages the stop surface 470 and engages the valve assembly 466 to thereby open the valve assembly 466. The aforementioned forward movement of the main slide plate 164 to bring the bight 214 of the heel clamp pad into abutment with the heel end of the shoe assembly 476 had also moved the lug 450 forwardly. The lug 450, in this forward movement, pushes the block 442, together with the stop surface 470 and the valve assembly 466, forwardly against the force of the spring 448. The stop surface 470 is located in a forward-rearward position that is dependent on the forward-rearward position of the heel end extremity of the shoe assembly 476. The machine parts are so dimensioned that the forward-rearward distance between the stop surface 470 and the pad bight 214 is substantially equal to the forward-rearward distance between the back of the cam 474 and the nozzles 396. Therefore, regardless of the length of the shoe assembly 476 and the forward-rearward position of the heel portion of the shoe assembly, the nozzles 396 are located proximate to the heel end portion of the corner between the insole 480 and the upper margin 496 when the plate 294 and the nozzles 396 terminate their rearward movements.

During the rearward movements of the nozzles from the boundary of the unwiped side portion of the upper margin 496 with the previously wiped toe portion of the upper margin to locations that are proximate to the heel end extremity of the shoe assembly 476, the cement is continuously being extruded from the nozzle passages 400 into the angle between the upper margin 496 and the insole 480, the nozzles 396 are continuously being yieldably urged downwardly against the insole 480 by the motors 430, and the nozzles 396 are continuously being urged yieldably outwardly, under relatively low pressure, against the upper margin 496 by the motor 418, as shown in FIG. 33. Therefore, during the rearward cement extruding movement of the nozzles 396 they are able to remain in the angle between the insole 480 and the upper margin 496 in desirable positions for the extrusion of the cement regardless of the contour of the bottom of the insole and regardless of the contour of the insole periphery.

The relatively low back-up force exerted against the reentrant portion 500 on the right side of the shoe assembly 476 to fold the lasting strap top segments 134b part way towards the insole forces the partially folded upper margin 496 on the right side of the shoe assembly against the periphery of the insole 480 to create a barrier between the upper margin and the insole that inhibits the creeping of the cement between the upper margin and the insole and then between the upper 482 and the sides of the last 478. As noted in FIG. 33, the angle formed between the side of the last and the bottom of the last on the right side of the shoe assembly having the reentrant portion 500 is an acute angle which is smaller than the angle, which is close to a right angle, formed between the left side of the last and the bottom of the last. Therefore, the need for folding the lasting strap top segments 134b on the right side of the last partway towards the insole does not exist with respect to the lasting segments 134b on the left side of the last. By not folding the upper margin 496 on the side of the shoe assembly 476 not having the reentrant portion 500, the nozzles 396 on that side of the shoe assembly may move further outwardly under the force imparted thereto by the motor 418 until it meets resistance from the upper margin 496 and thus be positioned close to and extrude cement close to the periphery of the insole 480 which enhances the quality of the bond between the upper margin and the insole effected by the wiping operation described below. It is for these reasons that the left motors 150 (FIGS. 1 and 33) were not actuated, as were the right motors 150 to force their piston rods 158 inwardly under relatively low pressure.

The heel portion of the upper margin 496 is held upright and pressed against the last 478 by the heel clamp 212 to thereby enable the nozzles 396 to stay in the corner between this portion of the upper margin and the corresponding portion of the insole periphery as the nozzles move past this portion of the upper margin.

The motor 350 is maintained in its idle condition by pressurized air passing from the source 504 through a spring return valve 548 and a line 550 to the rod end of this motor. The motor 350 was actuated to force cement through the nozzles 396 pursuant to the aforementioned shifting of the valve 540 which, in addition to enabling the flow of pressurized air through the pilot line 542, enabled pressurized air to flow from the valve 540 through a pilot line 552 to the left side of a valve 556 to shift the valve 556. The shifting of the valve 556 enabled pressurized air to flow from the source 504 through the valve 556 and a pilot line 558 to the left side of the valve 548 to shift the valve 548. The shifting of the valve 548 cut off the flow of pressurized air in the line 550 and enabled pressurized air to flow from the valve 548 through a line 560 and a pressure regulator 562 in the line 560 to the blind end of the motor 350 to actuate the motor 350 to force cement through the nozzles 396.

The aforementioned opening of the valve assembly 466 enables pressurized air to flow from the source 504 through the valve assembly 466 and a pilot line 564 to the right side of the valve 556 to thereby shift the valve 556 back to its original position so that the flow of pressurized air in the pilot line 558 to shut off. The shutting off of the air flow in the line 558 enables the return spring in the valve 548 to return this valve to its original position to thereby cut off the flow of air in the line 560 and causes the pressurized air to again flow in the line 548 and thus actuate the motor 350 to return to its idle condition so as to cut off the flow of cement through the nozzles 396.

The opening of the valve assembly 466 also enables pressurized air to flow from the valve 466 through a pilot line 566 to the right side of the valve 518 to thereby shift this valve back to its original position so that the flow of air in the line 524 is cut off and pressurized air again flows through the line 520 to the motor 418 to thereby cause the motor 418 to swing the nozzles 396 inwardly and away from the upper margin 496 proximate to the heel end extremity of the upper margin.

The opening of the valve assembly 466 also enables pressurized air to flow from the line 566 through a pilot line 568 and a pneumatic timer 570 in the line 568 to the right side of the valve 508 to thereby shift this valve back to its original position so that the flow of air in the line 516 is cut off and pressurized air again flows through the line 510 to the motors 430 to cause the motors 430 to return to their idle position to thereby raise the nozzles 396 to their idle positions after a time delay imparted by the timer 570. This time delay enables the motor 418 to swing the nozzles inwardly of the upper margin 496 before they are raised upwardly of the insole 480 by the motors 430.

The opening of the valve assembly 466 also returns the motors 378 to their idle condition.

The opening of the valve assembly 466, after a time delay sufficient to enable the nozzles 396 to be raised clear of the shoe assembly 476, causes pressurized air under a higher pressure than had previously been applied to the right motors 150 to flow to the blind ends of all of the motors 150. This causes each motor 150 to force its piston rod 158 inwardly under relatively high pressure and thereby force the lasting strap top segment 134b inwardly over the insole periphery under relatively high pressure. This has the effect of forcing each lasting strap top segment 134b inwardly and downwardly to press the upper margin 496 against the insole 480. At this time, the rigid lasting strap bottom segments 134a are still clamping the top line 498 to the last, and the inward and downward force imparted to the lasting strap top segments 134b causes the lasting strap middle segment 134c to stretch, while the inner and outer presser straps 132 and 130 maintain their pressure against the shoe assembly 476, to thus force the portion of the upper 482 extending above the top line 498 upwardly and stretch the upper upwardly and tightly about the last while it is conforming to the shape of the last. The pressure applied by the presser straps 130 and 132 is light enough to allow this stretching of the lasting strap middle segments 134c to take place. The forcing down of each lasting strap top segment 134b against the insole causes the lasting strap top segments 134b to wipe or fold the side portions of the upper margin 496 against the insole 480 and bond the upper margin to the insole by means of the previously applied cement.

After the lasting strap top segments 134b have forced the side portions of the upper margin 496 against the insole 480 for a sufficient length of time as to enable the side portions of the upper margin to be effectively bonded to the insole, the motors 74, 96 and 150 are actuated to return the sets of lasting units 72 to their idle positions. This is followed by an actuation of the motor 248 to cause the wiper slide 244 to move forwardly thereby imparting motion to the wiper cams 254 and consequently the heel wipers 256 in a heel wiping stroke by means of the links 258. The heel wipers 256 are guided in their movement by the engagement of the cam slots 262 with the rollers 260 in a path that is both forwardly translating and inwardly swinging about the vertex 572 (FIG. 16) of the heel wipers. This causes the heel wipers 256 to engage the heel portion of the upstanding upper margin 496, that extends from the heel end extremity of the shoe assembly 476 to the rearmost ends of the side portions of the upper margin 496 that had been previously wiped against and bonded to the insole by the sets of lasting units 72, and wipe the heel portion of the upper margin against the insole heel seat portion 490 and bond it to the insole heel seat portion by means of the previously applied cement.

At about the same time as the actuation of the motor 248 to effect the heel wiping stroke, the flow of pressurized air to the cylinder 456 is cut off to thereby enable the springs 460 to lower the cylinder 456 to its idle condition to thereby lower the stop surface 470 out of intersecting relationship with the cam 474 and to thereby lower the valve assembly 466 away from the cam 474 so as to allow the valve assembly 466 to open. The lowering of the stop surface 470 out of intersecting relationship with the cam 474 enables the motor 295 to resume the rearward movement of the plate 294 and the nozzles 396 until they reach their idle positions.

At or near the end of the heel wiping stroke the motor 30 is so actuated as to cause the brake fingers 36 to disengage the flange 38 and thus unlock the support 40 for heightwise movement. At about the same time, air is introduced under increased bedding pressure to the motor 16 to cause the support 40 to be so forced upwardly as to press the wiped heel portion of the upper margin 496 against the bottoms of the heel wipers 256 to thereby flatten the wiped heel portion of the upper margin and enhance the bond between the heel portion of the upper margin and the insole heel seat portion 490. When this bedding pressure has been applied for a sufficient length of time, the machine parts that have not already done so are returned to their idle positions and the machine cycle is completed so that the lasted shoe assembly 476 can be removed from the machine.

When the shoe assembly is in the FIG. 32A position during the cement extruding travel of the nozzles 396 along the insole periphery preparatory to the wiping of the side and heel portions of the upper margin against the insole, the upwardly facing bottom of the insole heel seat portion 490 lies in a substantially horizontal plane that is substantially parallel to the plane of the bottoms of the heel wipers 256. The shank portion 574 of the insole, at this time, rises upwardly and forwardly from the heel seat portion 490 at an incline that is dependent on the size and style of the shoe assembly 476. The lasting instrumentalties 126 should, at this time, extend in forward-rearward directions in an inclined plane that is approximately parallel to the plane of the insole shank portion 574. Prior to the start of the machine cycle, the shafts 66 had been rotated to cause the lasting instrumentalties 126 to swing in the appropriate direction about the axes of the pins 60 to thereby adjust the inclined plane of the lasting instrumentalties 126. If necessary, the shafts 50 had been rotated to raise or lower the lasting instrumentalties 126 to bring them to the apropriate elevation.

The shoe assembly 476 had been brought to the FIG. 32A position wherein the upwardly facing bottom of the insole heel seat portion 490 is in the substantially horizontal plane referred to in the preceding paragraph by causing the motor 16 to raise the shoe assembly so as to bring the insole heel seat portion against the hold-down 278. The shoe assembly had then been retained in this position by the operation of the motor 30 to cause the brake fingers 36 to bear against the flange 38, after which the hold-down 278 was disengaged from the shoe assembly. The hold-down 278 was disengaged from the shoe assembly with the shoe assembly retained in the FIG. 32A position by the brake fingers 36 so that the hold-down 278 would not be intersected by and interfere with the nozzles 396 during the rearward cement extruding movement of the nozzles and also would not be intersected by and interfere with the nozzles during the forward movement of the nozzles from their idle position to the location wherein the nozles were lowered against the insole.

When operating on a right foot shoe assembly, the operator will start the machine cycle by momentarily depressing the right control knob 484 (FIG. 1). This causes actuation of the motor 488 to swing the column 22 and the toe rest 24 leftwardly (FIG. 1). The depression of the right control knob 484 also admits air under relatively high pressure to the blind end of the right motor 378 as seen in FIG. 1 (the bottom motor 378 in FIG. 23) to thus project the piston rod 380 of this motor 378 forwardly under a pressure that is higher than the pressure projecting the piston rod of the other motor 378 forwardly. As a result, the block 368 is swung clockwise (FIG. 23) about the axis of the post 370 so as to swing the nozzles 396 leftwardly as seen from the front of the machine (upwardly in FIG. 23).

In a right foot shoe assembly, the left side of the last has the reentrant portion 500. In operating on the right foot shoe assembly, after the engagement of the bolts 492 with the flange 494, pressurized air is sent under relatively low pressure to the blind ends of the motors 150 on the left side of the machine as seen in FIG. 1 to thereby force the piston rods 158 of these motors inwardly at a lower pressure than the pressure that had been applied to the motors 96. The actuation of these motors 150 forces the associated lasting strap top segments 134b on the left side of the machine, as seen in FIGS. 1 and 33, inwardly under relatively low pressure to provide the inwardly directed back-up force described above with respect to the left foot shoe assembly and to cause the upper margin 496 on the side of the right foot shoe assembly having the reentrant portion 500 to be folded downwardly part way towards the insole.

In a right foot shoe assembly, when the toe rest 34 is on the longitudinal center line of the machine, the right side of the shoe assembly (the lower side in FIG. 31A) projects further from the longitudinal center line of the machine than the left side of the shoe assembly (the upper side in FIG. 31A). Therefore, with the right foot shoe assembly and with the toe rest 24 located along the longitudinal center line of the machine, when the motors 74 have completed the inward movement of the lasting instrumentalties 126 due to the engagement of the bolts 492 with the flanges 494, the lasting instrumentalties 126 on the right side of the machine (FIG. 1) will be closer to their associated side of the shoe assembly 476 that the lasting instrumentalties on the left side of the shoe assembly. Therefore, the leftward swinging of the toe rest 32 and the nozzles 396, in operating on a right foot shoe assembly, enables the sides of the shoe assembly to be spaced the desired distance inwardly from the lasting instrumentalties 126 when the lasting instrumentalties have completed their inward movement pursuant to the operation of the motors 74. The leftward movement of the nozzles 396, in operating on a right foot shoe assembly, ensures that the nozzles engage the insole 480 inwardly of the upper margins 496 when the nozzles are lowered against the insole 480 by the motors 430.

In all other respects the machine cycle in operating on a right foot shoe assembly is identical to the above described machine cycle in operating on a left foot shoe assembly.

Claims

1. A cement lasting machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for applying cement in the corner between a particular portion of the margin of said upper and the periphery of the corresponding portion of the insole and for wiping said margin portion against the insole comprising: wiping means mounted for movement, in a prescribed plane substantially parallel to the bottom of the wiping means, in a wiping stroke between a retracted position and an advanced position; a bar mounted for heightwise movement in a path that is at right angles to said plane; a show shoe assembly support secured to and extending upwardly of the bar for so supporting the shoe assembly bottom-up that said insole portion substantially lies in a plane parallel to said prescribed plane; brake means cooperative with the bar and movable between a braking position wherein it locks the bar against said heightwise movement and an open position wherein it permits said heightwise movement; a hold-down mounted for movement between a remote position spaced from the shoe assembly and a working position in a prescribed location above the support wherein the bottom of the hold-down lies in a wiping plane that is substantially coextensive with the bottom of the wiping means; a cement applying member mounted for heightwise movement towards and away from the insole and mounted for cement applying movement between a starting position and a final position along said corner past said prescribed location; means for initially retaining the wiping means in its retracted position; means for initially retaining the bar, together with the support, in a lower position; means for initially retaining the brake means in its open positions; means for initially retaining the hold-down in its working position; means for initially retaining the cement applying member in an upper position above said starting position; means for thereafter raising applying an upwardly directed yieldable force to the bar to yieldably raise the bar, together with the support, under a yieldable force to cause said insole portion to bear against the hold-down and thus locate said insole portion in said wiping plane; means, operative after said insole portion has been located in said wiping plane, for lowering the cement applying member into said starting position; means, operative after said insole portion has been located in said wiping plane, for causing the brake means to move into said braking position; means, operative after the brake means has moved into said braking position, for causing the hold-down to move to said remote position whereby said insole portion is retained in said wiping plane by said brake means; means for thereafter causing the cement applying member to effect its cement applying movement, the movement of the hold-down to said remote position preventing interference between the cement applying member and the hold-down during said cement applying movement; means enabling cement to be applied by said cement applying member into said corner during said cement applying movement; means for thereafter raising the cement applying member upwardly of the insole; and means for thereafter moving the wiping means through said wiping stroke to wipe said margin portion against the corresponding portion of the insole and bond said margin portion to the corresponding portion of the insole by means of the cement; and means, operative after the commencement of the wiping stroke, for causing the brake means to return to its open position to thereby enable said yieldable force to press the wiped margin portion against the bottom of the wiping means.

2. The machine of claim 1 further comprising: a stationary sleeve in which said bar is mounted for said heightwise movement; and a flange mounted to the bar for heightwise movement therewith; and wherein said brake means comprises: a pair of arms movably mounted to opposite sides of said sleeve; and a brake finger mounted to a first end of each arm so that the brake fingers are located on opposite sides of and in registry with the flange; and wherein the means for retaining the brake means in its open position and for causing the brake means to move into said braking position comprises: a motor connected to the ends of the arms remote from the brake fingers.

3. A method, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for applying cement in the corner between a particular portion of the margin of said upper and the periphery of the corresponding portion of the insole and for wiping said margin portion against said insole comprising: providing wiping means mounted for movement, in a prescribed plane substantially parallel to the bottom of the wiping means, in a wiping stroke between a retracted position and an advanced position; providing a bar mounted for heightwise movement in a path that is at right angles to said plane; providing a shoe assembly support that is secured to and extends upwardly of the bar; so supporting the shoe assembly bottom-up on the support that said insole portion substantially lies in a plane parallel to said prescribed plane; initially retaining the wiping means in its retracted position; initially retaining the bar, together with the support, in a lower position; placing a hold-down in a working position in a prescribed location above the support wherein the bottom of the hold-down lies in a wiping plane that is substantially coextensive with the bottom of the wiping means; thereafter yieldably raising applying an upwardly directed yieldable force to the bar to yieldably raise the bar, together with the support, to cause said insole portion to bear against the hold-down and thus locate said insole portion in said wiping plane; thereafter locking the bar against the heightwise movement; thereafter moving the hold-down away from said working position to a remote position spaced from the shoe assembly whereby said insole portion is retained in said wiping plane by said locking of the bar; thereafter causing a cement applying member to have cement applying movement between a starting position and a final position along said corner past said prescribed location, the movement of the hold-down to said remote position preventing interference between the cement applying member and the hold-down during said cement applying movement; applying cement by the cement applying member into said corner during said cement applying movement; thereafter raising the cement applying member upwardly of the insole; and thereafter moving the wiping means through said wiping stroke to wipe said margin portion against the corresponding portion of the insole and bond said margin portion to the corresponding portion of the insole by means of the cement; and, after the commencement of the wiping stroke, unlocking the bar to thereby enable said yieldable force to press the wiped margin portion against the bottom of the wiping means. 4. The machine according to claim 1 further comprising: means, operative at about the same time as the brake means is caused to return to its open position, for increasing the extent of said yieldable force. 5. The method according to claim 3 further comprising: increasing the extent of said yieldable force at about the same time as the bar is unlocked.