US3066329A - Machine for pulling over a last and gluing the uppers of shoes - Google Patents

Description

A. MICHEL ET AL Dec. '4, 1962 MACHINE FOR PULLING OVER A LAST AND GLUING THE UPPERS OF SHOES 7 Sheets-Sheet 1 Filed April 1, 1960 N m W w r A I v In Ms w ru 8 a Mm II V In 3 b O Q 0 IQ \w Q %h\ A mt u w NSRQ Dec. 4, 1962 A. MICHEL ET AL 3,066,329

MACHINE FOR PULLING OVER ALAST AND GLUING THE UPPERS OF SHOES Filed April 1, 1960 7 SheetsSheet 3 I l J Dec. 4, 1962 A. MICHEL ET AL MACHINE FOR PULLING OVER A LAST AND GLUING THE UPPERS OF SHOES 7 Sheets-Sheet 4 Filed April 1, 1960 Dec. 4, 1962 A. MICHEL ET AL MACHINE FOR PULLING OVER A LAST AND GLUING THE UPPERS OF SHOES 7 Sheets-Sheet 5 Filed April 1, 1960 III l N V E N To 2 A/ber/ M/Cf/fl Akrberf SU/l/Vll 51? WW Dec. 4, 1962 A. MICHEL ET AL MACHINE FOR PULLING OVER A LAST AND GLUING THE UPPERS OF SHOES '7 Sheets-Sheet 6 Filed April 1, 1960 Dec. 4, 1962 A. MICHEL ETAL MACHINE FOR PULLING OVER A LAST AND GLUING THE UFPERS OF SHOES 7 Sheets-Sheet 7 Filed April 1, 1960 rates Unite A atent 3,056,329 Patented Dec. 4, 1962 iifice MACHINE FOR PULLING OVER A LAST AND GLUING THE UPPERS F Si-HFES Albert Michel and Herbert Schindler, Pirrnasens, Pialz,

Germany, assignors to Sehon & Cie G.m.h.H., Pinnasens, Pfalz, Germany Filed Apr. 1, 196%), Ser. No. 19,222

12 Claims. (Cl. 1210.8)

The invention relates to a machine for pulling the uppers of shoes over a last and toe lasting by cementing or gluing with wipers which sweep over the edge of the upper leather, an arrangement for supporting the shoe, a toe presser as well as a heel abutment, whereby the toe of the leather of the upper is pulled in successive operations over the last, wiped and glued.

Machines of this type heretofore were of such construction that they did not sufficiently compensate for the difference in quality and thickness of the leather used for the shoes, of the lining and the caps as well as the considerable differences in the form of the lasts, and of the expansion, etc.

The continuous change due to fashions in the leather color compels the manufacturer to spray the leather of the uppers; leather thus treated is particularly sensitive so that the outer layer of the upper is not also attacked where it is not covered by the sole later on i.e. along the border. This requirement is not met by the known machines.

It is therefore an object of the invention to improve and to refine machines of the type aforementioned in such a manner that the shortcomings indicated are eliminated and particularly good supervision and adjusting possibilitiesresultin a faultness work product.

In accordance with the invention this is accomplished first of all by a plurality of wide closely aligned grippers which are arranged with their supports in the manner of a crown upon a rotatable plate around a stationary shoe supporting means. Shoes which are pulled over and wiped in on a machine in accordance with the invention do not have to be worked over regardless of the material or the model being used. The gripper system in accordance with the new machine consists of a toe gripper, two side grippers and two ball grippers. The latter are unusually wide so that two units seize the entire ball portion from the beginning of the instep to the beginning of the curvature of the toe. The toe gripper is not a gripper in the customary sense, but a toe forming gripper, the lips of which are so large and are so formed that the entire toe portion of the upper leather is seized. The distances between the toe grippers and the side grippers are very small as is the distance between the side grippers so that all grippers when considered as a whole have the appearance of a pair of jaws viewed from the inside which bites into the rim of the leather of the upper.

Other objects and details of the invention will become apparent if reference is had to the drawings which show an embodiment of a machine in accordance with the invention and in which:

FIG. 1 is a schematic diagram of the hydraulic system;

FIG. 2 is a side view of the machine with sections of different groups;

FIG. 3 is a section through the shoe supporting means;

FIG. 4 is a side view thereof;

FIG. 5 is a top view of the shoe support or rest;

FIG. 6 is a section through the toe grippers and support;

FIG. 7 is a side view thereof partly in section;

FIG. 8 is a top view of the toe grippers;

FIG. 9 is a section taken along the line A-A of FIG. 6 through the support;

FIG. 10 is a side gripper with the support partly in section;

FIG. 11 is a different foot conformation of the ball grippers support;

FIG. 12 is a section taken along the line BB of FIG. 10.

FIG. 12a is a section taken along line A-A of FIG. 10;

FIG. 13 is a plan View of the wiper head partially in section;

FIG. 14 is a side view thereof;

FIG. 15 is a plan view of the grippers system; and

FIG. 16 is a plan view of the turntable for the grippers system.

The pump 2 mounted in the standard 251 (FIG. 2) of the machine which is driven by motor 1 (FIG. 1) draws in oil through a duct 3 and through a suction basket from the sump and forces it into the conduit 4 where it is placed under pressure which is adjusted by a control valve 5. During idling of the machine the oil returns from this valve into the oil sump because the other paths are closed by a magnetically operated longitudinal slide member 6 and a lever operated rotary slide member 7. Thus the oil in the entire conduit 4, Le, between the manometer 8, the slide members 6 and 7, the pump 2' and the control valve 5 is in readiness under the required operating pressure.

The siide member 6 is operated in one direction by a magnet 38 which is in the circuit 9 and is controlled by two end switches 10 and 11 and in the other direction by the spring 12. The latter holds the longitudinal mem-' her 6 in locking position.

In the following description where mention is made of the oil actuating one or the other pistons, the return takes place in all cases by springs which are not shown. When moving the treadle 13 down by one tooth of the ratchet member 13 the switch 10 is closed and the coil ofmagnet 38 is energized, whereby the longitudinal slide member 6 is brought into open position so that the oil flows through the conduit 14 by way of a distributor 15 and thence through several conduits 16 into the piston cylinder of the grippers for the purpose of closing all grippers of the gripper head. The gripper head comprises a toe gripper, two side grippers and two ball grippers.

The conduit 16 is provided with pressure reducing valves but only as far as the two forward side grippers are concerned. The conduit 19 serves for the return of the oil and the conduit 20 for the leakage oil.

Moving the treadle further into the next ratchet tooth adjusts the rotary slide 7 by way or" the draw bars 21, 22 in a manner that the oil arrives by way of the conduit 23 at the distributor 26 and thence by way of conduits 27 at the gripper supports for the purpose of pulling all grippers downwardly and also at the piston 282 for drawing up the heel abutment. A pressure reducing valve 24 having a return conduit 25 is built into the conduit 23 as well as a cut off valve 31 having an operating lever 32.

Moving the treadle further into a following ratchet tooth causes the oil to enter into the conduits 28 (FIG. 15) and thence to operate three different pistons which, lowever, do not operate simultaneously but at short intervals depending on the strength of the biasing springs. Thus first the piston 255 for moving in the entire gripper head, then the piston 259 for operating the toe presser and after that the piston 91 (FIG. 15 which imparts a pivotal movement to the ball grippers. At the last ratchet the oil operates the piston 215 by way of the conduit 35 for pulling the wipers 201 inwardly and over. During this movement the piston also begins to operate in order to snap the toggle lever 57 of the shoe supporting means from its stretched out position. After a cerain inward movement of the pressure yoke 213 (FIG. 2) the circuit 9' is interrupted by switch 11 which is arranged in the path of movement of the yoke 213 whereby the magnetic plunger 38 also moves to its initial position,

3% opens all grippers and the entire fringe of the upper leather is free.

FIG. 14 shows the details of switch 11 which is associated with a cam element 11a mounted on the yoke 213 and which is movable relative to switch 11 mounted in head member 205. A roller 11b which forms a part of switch 11 is spring biased against and rides on the cam element 11a. After the yoke 213 has moved a small distance the roller 11b following the cam element is moved outwardly by the spring of the switch, thereby opening the switch. This takes place when the yoke has moved far enough to open the wipers 201.

A standard 52 (FIG. 3) having a forked bolt 54 adjustable as to height, which is locked by means of nut 55 secured upon a plate 51 in the machine base. A pair of toggle levers 57 with a bolt 56, a bolt guided by means of a key 59 and a supporting member 60 secured thereto are mounted on the forked bolt. These components are a part of the shoe supporting means.

The toggle levers are biased by a spring 72 and are under the influence of a hydraulic piston 74 which engages a roller 78. In the closure plate 73 a threaded bore 74 is provided for connecting thereto the oil conduit 35 (FIG. 1). Screw 71 provided with lock nuts serves for the correct adjustment of the toggle levers in stretched out position. The supporting member 60* is surrounded by a further support member 61 which serves for the purpose of pressing the inner sole at the outer rim Well against the lasts. This member is secured by means of screw 62 to a pressure rail 63 which is adjustable in height as determined by the bars 65, 66, '70 which are linked to the treadle 13. In a predetermined position of the treadle the support member 61 drops somewhat downwardly. At the lower end of the standard 52 a plate 81 is mounted for rotation about the center boss 53.

A support 101 (FIGS. 6, 7) for the toe grippers is rigidly secured upon the rotatable plate 81 where by means of the bracket 102 and screws 103 two flat plates 104 are clamped which can be adjusted in height upon releasing screws 103. The two fiat plates are connected at the top by a bridge 105 and two screws 106. In the bridge an abutment pin 107 is inserted and between the flat plates 104 a cylindrical member 108 is movable which in one bore receives the pistons 109 and 110 and in another bore the piston 112. The oil duct for the double piston 109110 is connected to a threaded bore 108. A lid 111 which is securely fastened to the bottom of cylinder member 108 and is tightened thereagainst is provided with a bore 111 for the oil supply to the single piston 112. This piston is closed at the top by means of a dovetailed slide 113 which serves for receiving the lower toe gripper portion 114. On top of the cylinder member 108 the upper toe gripper portion 115 is secured by means of screw 116. The bolt 127 and the pressure spring 128 hold the cylinder portion 108 by way of lid 111 in its uppermost position where the bridge 105 serves as an abutment. The highest position of the lower gripper member is adjusted by an adjustment limiting screw 117 mounted upon the bolt 118.

If the oil is now admitted through the bore 111', and if gripper portion 114 is not yet in engagement with abutment 117, piston 112 is raised until portion 114 abuts limiting screw 117, then the cylinder portion 108 is forced downwardly with the upper toe gripper member 115, since the screw 117 prevents movement of member 114 upwardly and member 115 clamps the rim of the leather of the upper between members 115 and 114. In order that the upper leather may be pulled downwardly, oil is now introduced through the bore 108' and presses the entire cylinder portion together with the closed gripper part downwardly with a pressure which results from the adjusted oil pressure and from the surface magnitude of the two pistons 109 and 110 until the bridge of cylinder portion 108 rests on the pin 107 and thus neutralizes or removes the downward pressure of the outer piston.

4 At this moment the upper edge of the upper gripper portion has attained a level at which the wipers described hereinafter' can just sweep over the edge. Upon elimination of the pressure of the outer piston 109, the inner piston 110 has only the task of aiding a predetermined toggle lever movement which is eifected manually downwardly by means of the lever arrangement 121-126 if that proves to be necessary.

The toggle between the pivots 121, 124 and 126 is oper= ated by manipulating lever 123. This may become necessary when the upper leather is not yet correctly clamped between the members 114 and 115. Pressure on piston 110 alone would not be sufficient to accomplish this additional downward movement of cylinder 108 and the simultaneously stretching of the leather. However, if the stretching is effected manually, then piston 110 follows the movement and after the leather is stretched this piston is able to sustain the final adjusted position of the cylinder 108. It must be noted in this connection that the two pistons 109 and 110 are slidable relative to one another and have end surfaces of dilferent sizes. If piston 109 is already in fixed position a relatively smaller pressure is efiective only on piston 110 and thus can assist and maintain any additional adjustment effected by means of lever 123.

The toggle lever is linked by means of pin 126 to the cylinder 108 in which the coaxial pistons 109 and 110 are slidable. The pressure on the outer piston 109 is neutralized when, due to downward movement of cylinder 108, the pin 107 prevents further movement of the cylinder 108 relative to piston 109. The adjustment by means of lever 123 is still aided by pressure applied to piston 110, but the oil pressure has no further effect on piston 109.

Next to the toe grippers, two side grippers are secured to the rotatable plate and a rapid fastening device is used for this purpose because their position changes frequently, for example, when there are substantial difierences in sizes or form. The standard portion 51 (FIG. 10) has a slot 152 for sliding into the rotatable plate 81 and a rapid fastening device 153, 154 for clamping it on at the required position. An angular member 155 is connected to the standard portion 151 by means of the pin and may be tilted by several degrees out of its normal vertical position by means of a set screw 161. A spring which is not shown acts counter to the set screw 161. The cylinder part 157 (FIG. 12) extends over the angular member 155 with two legs and is secured thereto by means of two screws 156. Two elongated slots for the screws 156 allow adjustments in the height. In the bore of the cylinder portion 157 are located two pistons 162 and 164 which are supplied with oil through a bore 158 (FIG. 10). Piston 164 is provided with a sealing ring 165. This ring is necessary to prevent leakage between pistons 164 and 162 because the latter moves outwardly at the bottom. The limits of the outer piston are determined by engagement of its shoulder 163 with the threaded sleeve 166 which is adjustable in height. A second cylinder portion 167 (FIG. 12) is connected by a dovetail connection with the first cylinder portion 157. It is pressed upwardly by means of a hollow bolt 171 and a pressure spring 172 until a bracket secured by means of screw 169 to its lower end engages the vertically adjustable threaded sleeve 166. The cylinder portion 167 is prolonged upwardly by means of a forked portion 168 which carries upper gripper member 178 (FIGS. 1 and 10) by means of a bolt 177 as well as the lower gripper member 179 which is secured by means of two screws 180. The piston 175 at its upper end has a lateral projection 176 against which abuts the gripper portion 178. If the oil is admitted through the bore 174, the piston 175 presses upwardly and the two gripper members 178, 179 securely clamp the leather. Then the oil enters through the bore 158 and with mutual force presses the two pistons 162 and 164 downwardly to move the cylinder part 167 and all components connected thereto by way of the bracket 170. Thus the lateral portion of the upper leather is simultaneously pulled downwardly with the toe and that so far that the shoulder 163 of piston 162 rests against the threaded sleeve 166. In this manner the force of the large piston is stopped. In this position, the upper edge of the gripper portion 178 is also at such a height that the wipers described later can just sweep over it. After the pressure of the outer piston 162 has been removed the inner piston 164 has only one task which is to aid any downward correcting movement that might be required and which is effected manually and by touch by means of lever 188 which is effective by Way of elements 181-187 to move the gripper members 178, 179.

The angular member 155 is wider at the bottom than at the top, as will be noted by comparing FIGS. 12 and 12a which are sections of FIG. taken along lines B-B and A-A, respectively, but drawn to a smaller scale than FIG. 10. The shaft 185 is pivotally mounted in the wider portion of member 155 which portion extends to the rear of member 155 as seen in FIG. 10. The operation of this part of the mechanism is generally the same as explained above in connection with FIGS. 6 and 7.

The lever 138 is secured to shaft 186 by means of a pin 187. A sleeve 184 into which the shaft 186 extends and which is fastened to said shaft by means of a pin 185 is rotatably mounted in the angular member 155 as seen in FIG. 12a. A link 182 is pivotally connected at one end with a pin 181 to the cylinder part 167 and is joined at the other end by means of a pin 183 to an upwardly extending eccentric portion at the end of the sleeve 184. As the lever 188 is moved downwardly, shaft 186 and sleeve 184 are pivotally moved in the member 155. This results in downward pull on the link [82 and consequent downward movement of the cylinder part 167 with the gripper members 173 and 179 which are mounted thereon.

Particularly with the lateral or side grippers it happens that the border of the upper leather is pulled down too much which cannot be corrected without special arrangement because the grippers as described must remain below the wipers. This particular arrangement consists in having built into the oil conduit 16 pressure reducing valves 17 (FIG. 1) for operating the piston 175 which when operated reduce the pressure between the gripper members 178-179 so much that the leather slides out of the grippers to a predetermined extent. These pressure reducing valves for rapid reducing of the pressure of course do not have any conventional pressure adjusting screw but a rapid fastening device which is not shown and which is arranged within reach.

The two ball grippers correspond as to their overall effect to the two side grippers just described, except that they do not necessarily need the pressure reducing arrangement just described. They are not provided with a rapid fastening means at the foot or pedestal but their position is fixed by a pin 153 (FIG. ll) for which a selection of holes 95 is arranged in the turntable 81 (FIG. 16).

For this purpose the standard portion 151 is provided with a projection 192 (FIG. 11) at its bottom portion and has a corresponding extension 191 which extends over said bottom portion. A bolt 194 is inserted in the lower end of the standard with a spring ring 195 for engagement by the linkage 92. This linkage may be supplied by way of a conduit 28 with pressure oil from two pistons 91 (FIG. which are movably connected by means of cylinders 94 secured to the standard by bolts 93. When the pressure oil enters, the ball grippers make a rotary movement which essential for the correct wiping of the upper leather at the ball portion.

Two wiper supports 202 which are provided with exchangeable wipers 201 are pivotally disposed in the 6 wiper head member 203 (FIGS. 13, 14). When they are in engagement with the drawn out upper leather they must first move inwardly and then slide over the toe.

For the inward movement a pressure piston 2 15 is provided with a yoke 213 with two bolts 212 such as are also found in the wiper support 202. These bolts are connected with longitudinally adjustable linkage 209, 208, the adjustability of which is utilized in connection with different sizes and shapes of shoes. If now the oil enters through the bore 217 into the closure member 216, the piston 5315 together with the yoke 213 is moved forwardly until the set screw 220 engages at the flanged guide member 204 which moves in the head member 205 and is held in its rearward position by means of pressure springs 207, bolts 206 and nuts 210. Up to this abutment of the set screws the linkage 208-209-212 had adjusted the wiper supports 202 and the wipers 20-1. The further movement of the piston 215 then causes the entire head portion 20-1 with the entire wiper head 20-3 to move forwardly to complete the wiping operation. The guide member 204 has a guide slot 211 (FIG. 13) for the draw bar 260.

In operation the arrangement described provides for placing the completely sewn upper upon the last externally of the machine and pulling it forwardly with a conven tional toe gripper in a manner that the heel portion rests firmly against the lasts. The rim of the front portion is now introduced in the open gripper described in detail hereinabove and then the treadle is released and moved to the second ratchet tooth whereupon the grippers close so that they securely hold the leather of the upper. When moving the treadle to its next ratchet position all five grippers are pulled downwardly to the same extent so that the uppermost edge of the upper gripper portions corresponds to a height which is later assumed by the inwardly moved wipers. In that position the shoe is now carefully observed as to even tightening of the rim of the upper leather around the toe and corrections can then be undertaken in the horizontal direction by operating the hand lever 84 which causes the entire grippers to move horizontally about the toe of the shoe or also vertically if the leather of the upper is unevenly high at different posi tions by downward operation of the end levers 188-123 or a part of them. It is also possible to make adjustments on both side grippers in that the gripper pressure thereof is decreased by the rapid operation of a pressure decreasing valve 17 built into the conduit 16. In that event the pressure decrease can be carried out until the leather slides out of the grippers as desired.

While the leather of the upper was being drawn up by the grippers the heel member 271 had simultaneously engaged the heel of the last and supported the same. This heel support is seated on a pivot arm 272-27S (FIG. 2) and is moved by means of the hydraulic arrangement with the parts 281-2155. After secure placement of the heel support 271 the pivot arm is secured against any movement by a locking device 274 which is operative in both directions. This locking device 274 cooperates with the members 275, 276, 277 which constitute a toggle which cannot release unless the locking effect is overcome by the return movement of piston 282.

As the last with the shaft of the shoe is mounted in the machine the piston 282 is put under pressure by admission of water through nozzle 285. The piston moves to the right and thereby pulls link 283 with pivot arm elements 272278 to the right. A pressure spring 277a is mounted in the lower pivot arm portion 277 which presses the upper arm portion 273 against the lug 275. The pivotal movement of the arm continues until the heel support 271 rests against the last, whereupon the pivot arm is tripped about the bolt 276 against the total pressure of the spring, so that the pin of the latch portion 274 engages the earn 274 and locks the arm in position, If after this operation the pressure fluid leaves the cylinder 281, the spring 279 pulls the lower pivot arm portion 277 to the left, thereby align- 7 ing arms 273 and 277 and straightening the toggle while releasing the latch 274, 274' and permitting the entire pivot arm to travel to the left as far as possible.

Stepping the treadle further to the next ratchet causes the pivot arm 253 to be swung over by means of piston 255 and the cylinder 256 against the effect of a pull spring 259a. The pivot arm 253 carries also simultaneously the complete shoe toe support with the draw bar 260 and levers 261, 262, 263 and 265. The draw bar 266 is opei-- ated downwardly by pressure oil and upwardly by a pressure spring 258. This position of op ration is then followed by the pivotal movement of the two ball grippers which are actuated with the link 91, 92. The linlt 265 which is pivotally mounted on head 205 cooperates with lever arms 263, 261 and 262 which are moved by the bar 260. Lever 263 which is a pressure member for the front cap of the shoe is pivotally connected to link 265 which acts as a guide member as well as to lever 261. Adjustments of the pressure member or lever 263 can be made by rotating the threaded portion 265a which engages a thread in the forward portion of the link 265 that is connected to the pressure member 263. When the bar 26% moves upwardly the pressure member is not only moved upwardly away from the shoe upper by the lever 261 but also slightly to the right under the guidance of link 265.

Moving the treadle further to the last ratchet opens the conduit 35 and the oil flows through the conduit 217 into the piston 215 to thereby first swing the wipers inwardly by means of the yoke 213 and the linkage 212, 209 and 208 and of the wiper support 2&2 and then for longitudinal movement of the wipers over the toe of the shoe toward the heel. Upon completion of the movement of the yoke 213, approximately 4 to /3 inch, the switch 11 (FIG. 1) is opened by means not shown and thus the circuit is interrupted; the slide 6 drops down again into its initial position and the five tensioned grippers release the leather of the upper. Almost simultaneously the toggle lever 57 is pressed out of its vertical position by means of the pressure piston 75 and the shoe support 66 drops downwardly. At the same time the inner sole support 61 is displaced downwardly by way of an arrangement not described in detail so that the heavy pressure on the shoe no longer presses the shoe upon the two supports but is able to press it firmly against wipers. After several seconds the treadle is displaced to its end position by releasing a locking lever which is not shown and all parts return to their initial position.

In practice this machine is designed for two positions of operation, i.e. one for the right and one for the left shoe. While one side is under pressure all necessary preparations for the next shoe are made on the other side.

Having now described our invention with reference to the embodiment illustrated in the drawings, we do not wish to be limited thereto, but what we desire to protect by Letters Patent of the United States is set forth in the appended claims.

We claim:

1. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine in cluding a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of Wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof.

2. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith.

3. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion.

4. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers, having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said'turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith, and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, and a pair of manually operated pressure reducing valves provided in the fluid supply ducts of said side grippers.

5. Machine in accordance with claim 4 wherein the support means of said toe grippers is fixedly disposed upon the turntable while the support means of the side grippers include rapid fastening means for fastening said side grippers in any predetermined position and said turntable having a plurality of apertures and the support means of the two ball grippers include pins rotatably supporting said ball grippers in selected ones of said apertures.

6. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith, and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion, said gripperscomprising a toe gripper, two side grippers and a pair of ball grippers, a pair of manually operated pressure reducing valves being provided in the fluid supply ducts of said side grippers, and a plurality of hydraulic pistons associated with the lower end of said ball gripper supporting means operative to effect minor pivotal movements for adjusting the leather of shoe uppers adjacent the ball portions in the correct positions.

7. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling eflect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, a pair of manually operated pressure reducing valves being provided in the fluid supply ducts of said side grippers, said support means of said side grippers and of said ball grippers each including a joint and a set screw permitting angular adjustment of the vertical position of said side and said ball grippers.

8. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with Wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carryin; said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, a pair of manually operated pressure reducing valves being provided in the fluid supply ducts of said side grippers, and said shoe supporting means including a vertically adjustable toggle lever associated with a hydraulically movable piston operative upon closing of said grippers to collapse said toggle lever.

9. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of Wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, a pair of manually operated pressure reducing valves being provided in the fluid supply ducts of said side grippers, said wipers, said toe pressure means and said heel abutment being supported on pivot arms, and said pivot arms having their pivot supports in said base and being associated with hydraulic pistons operative to move them into position.

10. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turnable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling eflect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, and a pair of manually operated pressure reducing valves provided in the fluid supply ducts of said side grippers, said wipers, said toe pressure means and said heel abutment being supported on pivot arms, said pivot arms having their pivot supports in said base and being associated with hydraulic pistons operative to move them into position, and said pivot arm for said wipers including also a hydraulic piston operative to pull said toe pressure means downwardly.

11. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with Wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turna'ble and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith, and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling effect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, and a pair of manually operated pressure reducing valves provided in the fluid supply ducts of said side grippers, said wipers, said toe pressure means and said heel abutment being supported on pivot arms, and said pivot arms having their pivot supports in said base and being associated with hydraulic pistons operative to move them into position, and said pivot arm. for said wipers including also a hydraulic piston operative to 11 pull said toe pressure means downwardly, and said toe pressure means including an adjustable link adapted to impart a withdrawing movement to the support away from the shoe supported thereon.

12. Machine for pulling over and lasting the uppers of shoes on the lasts by cement lasting with wipers for pulling the rim of the leather of the uppers, said machine including a base, a shoe supporting means, a toe presser and a heel abutment and a plurality of wide grippers having support means and being disposed together with said shoe supporting means in close proximity to one another in crown fashion arrangement, a turntable carrying said shoe supporting means and said grippers, said shoe supporting means being stationary relative to said turntable and being disposed centrally thereof, each said gripper support means including a single hydraulic piston for closing said grippers and a double hydraulic piston for moving said grippers and said hydraulic pistons having fluid supply ducts associated therewith, and comprising a smaller and a larger piston portion and an auxiliary means including manual means associated with said smaller piston portion operative to increase the pulling efli'ect of said smaller piston portion, said grippers comprising a toe gripper, two side grippers and a pair of ball grippers, and a pair of manually operated pressure reducing valves provided in the fluid supply ducts of said side grippers, said wipers, said toe pressure means and said heel abutment being supported on pivot arms, said pivot arms having their pivot supports in said base and being associated with hydraulic pistons operative to move them into position, said Wipers constituting a wiper head being associated with a hydraulic pressure piston and a yoke in engagement therewith and draw ba-r means being connected endwise of said yoke operative to move said wipers inwardly prior to wiping across the shoe.

References titted in the file of this patent UNITED STATES PATENTS

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