US2646582A - Machine for operating on shoes - Google Patents

Description

July 28, 1953 B. JORGENSEN MACHINE FOR OPERATING ON SHOES 6 Sheets-Sheet 1 Filed June 25, 1949 [nvenfor B efn/zardz Jorgensen By his A zzorney July 28, 1,953 B. JORGENSEN MACHINE FOR OPERATING ON SHOES 6 Sheets-Sheet 2 Filed June 23, 1949 lnvenfor ern/zardt Jorgensen By his Attorney July 28, 1953 I BLJORGENSEN 2,646,582

- MACHINE FOR OPERATING ON SHOES 7 Filed June 23, 1949 s Sheet sShe et 3 inventor Bernhardz Jorge/wen By his Attorney July 28, 1953 B. JORGENSEN 2,646,582

MACHINE FOR OPERATING ON SHOES Filed June 23, 1949 s Sheets-Sheet 4 fnvenlaf Bernhardt Jorgerzsen 4 By his Azzorn ey July 28, 1953 B. JORGENSEN 2,646,582

MACHINE FOR OPERATING 0N SHOES Filed June 23, 1949 s Sheets-Sheet 5 Inventor Bern/zarazJor'gensen By his Attorney July 28, 1953 B. JORGENSEN MACHINE FOR OPERATING ON SHOES 6 Sheets-Sheet 6 Filed June 25, 1949 Patented July 28, 1953 MACHINE FOR OPERATING ON SHOES Bernhardt Jorgensen, Marblehead, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. .L, a corporation of New Jersey "Application June 23, 1949, Serial No. 100,812

.16 Claims.

This invention relates to machines for operating on shoes and, in one aspect, has in view the provision of certain improvements in an organization of the character disclosed in United States Letters Patent No. 2,437,696, granted on March 16, 1948, on an application of mine. It is to be understood, however, that in various novel aspects the invention is not limited to the embodiment herein shown and described.

in accordance with the disclosure of the abovementioned Letters Patent there was applied to a fluid-operated cement toe-lasting machine constructed generally as disclosed in United States Letters Patent No. 2,324,509, granted on July 20,

1943, on an earlier application of mine, toe-pressing and trimming means constructed and arranged to receive the shoe after the toe-lasting operation, to apply pressure to the cement-lasted marginal portion of the toe end of the upper until thecement had more firmly set and to remove surplus material from the marginal portion of the upper near the end of the toe. The construction thus, provided included a plate for pressing the marginal portion of the upper on Y the insole, a fluid-operated toe rest for forcing the surplus material from the margin of the up per there was provided a trimming knife or v cutter movable along the pressing plate, and fluid-pressure means for operating the knife arranged to receive operating fluid directly from the fluid-pressure system of the lasting machine at a predetermined time in the next cycle of operations of the machine under control of one of the valves in the machine. That is, a valve controlling the operation of a portion of the lasting machine was rendered effective also to cause:

the above-mentioned trimming knife to operate and later to return to starting position in the course of the cycle of operations of the lasting machine. To cause the trimming knife to operate on the last shoe when the lasting machine was not performing acycle of operations, means was provided whereby the operator could move the above-mshfioned valne by hand, thus causing the portion of the lasting machine controlled by that valve to operate idly, and by control of another valve it was necessary also to cause the development of fluid pressure in the fluid-pressure system of the lasting machine for the purpose of operating the knife. Further to cause the toe rest to release the last shoe the operator had to break the circuit of the electrical means controlling the toe rest valve.

An object of the present invention is to pro- :vide a construction such that the toe-pressing and trimming means is not so dependent as heretofore on the lasting machine for its operation and. control. In the construction herein shown the operation of the trimming knife and its return to starting position are still under control of one of the valves of the lasting machine, although a different valve than heretofore, when the lasting machine is in use; but to cause the knifeto operate on the last shoe fluid is admitted to the knife-operating means by a different manually operated valve from an accumulatoralready charged by the fluid-pressure system of the lasting machine. It is therefore unnecessary, for

the'purpose of operating on .the last shoe, to 7 cause the development of fluid pressure in the fluid-pressure system of the lasting machine or to cause the idle operation of any portion of that machine. The construction shown is further such that the release of the shoe by the toe rest after the toe-pressing and trimming operations, whether it is the last shoe operated, upon or any other shoe, is efiectedin response to return movement of the knife-operating means, thus eliminating the. means previously provided for normally efiecting such release by the cycle of.

operations of the lasting machine and also the necessity for any act by the operator to efiect the release of the last shoe. Provision also is afforde'cl for moving directly by the shoe, when it is presented by the operator, the valve which admits fluid to the means for operating the toe drawings and thereafter pointed out in the claims.

In the drawings,

Fig. l is a view in front elevation of the greater portion of the above-mentioned toe-lasting machine having applied thereto the improved toepressing and trimming means;

Fig. 2 is a View partly in left-hand side elevation and partly in section of the toe-pressing and trimming means;

Fig. 3 is a section through a portion of the structure on the line IIIIII of Fig. 2;

Fig. 4 is a detail view in vertical section of parts located at the lower portion of Fig. 2;

Fig. 5 is a view of the toe-pressing and trimming means in rear elevation;

Fig. 6 is a section on the line VIVI of Fig. 5;

Fig. 7 is a view partly in left-hand side elevation and partly in section, showing a portion of the toe-pressing and trimming means and illustrating the action of the trimming knife on the shoe;

Fig. 8 is a view partly in plan and partly in section of portions of the structure shown in Fig. '7

Fig. 9 is a section on the line IX-IX of Fig. 6; and

Fig. 10 is a diagrammatic view of the fiuidpressure generating and controlling means included in the machine.

In general accordance with the disclosure in' the above-mentioned Letters Patent No. 2,324,- 509, the toe-lasting machine herein shown is provided with a plurality of fluid-operatedinstrumentalities which operate onthe shoe in the course of a cycle of power operations of the machine. These instrumentalities include grippers (not shown) which grip the margin of the toe end of the upper materials and apply a pull thereto, a toe former 2 (Fig. l) which wipes the toe end of the upper heightwise of the last while it is heldby the grippers, upper-trimming means identified generally by the reference character 4 for trimming the margin of the toe end of the upper to remove therefrom all but the outer layer of the upper materials, means (not shown) for applying cement to the toe end of the shoe after the upper-trimming operation, and a pair of wipers 5 for wiping the margin of the outer layer of the upper materials inwardly over the insole into position to be secured thereto by the cement. For operating the several instrumentalities there are provided cylinder-and-piston devices to which operating fluid, preferably oil, under pressure is delivered from a chamber or manifold 8 (Fig. 10). Admission of the fluid to the different devices and exhaust of the fluid'therefrom are controlled by sleeve valves some of which are shown at [0 in Fig. 10, the initial positions of these valves being such as to close the outlets from the manifold and to provide exhaust openings from the several devices to a reservoir or sump l2.v The valves ID in the machine herein shown are controlled in proper time relation to one another in the cycle of operations by a rotatable drum I4 in accordance more particularly with the disclosure of Letters Patent No. 2,337,- 558, granted on December 28, 1943, on an application of mine, this drum having thereon valvecontrolling fingers which cause the valves to deliver the fluid to the different devices and later to interrupt the delivery of the fluid and to open the devices to exhaust at the proper times. The drum I4 is rotated by fluid admitted from the manifold through a pipe line 16 t0 8' cylinder I3 in which is a piston 20 connected to the drum, the fluid being thus admitted to the cylinder l8- by a valve 22 which is movable by the operator to start the cycle of operations, the cycle corre-' sponding to one complete revolution of the drum.- Fluid is supplied to the manifold 8 from the sump 12 by a pump 24 driven continuously by an elec-- tric motor 26, the pump forcing the fluid into the manifold through a pipe line 28. When the machine is not in operation the fluid returns freely from the manifold to the sump through a valve 30, corresponding to the valve 1088 shown in Letters Patent No. 2,324,509, without developing any substantial pressure in the manifold. The valve is moved by the operator to' close the outlet from the manifold before the valve 22 is operated to start the machine, whereupon pressure is developed in the manifold and the excess fluid delivered by the pump returns to the sump past a spring-controlled relief valve 32. At the end of the cycle of operations the valve 30, under control of the drum I4, is re-'- turned automatically to its initial position to provide a free outlet again from the manifold. Prior to the completion of the cycle, after the wipers B have wiped the margin of the upper inwardly Over the insole, the valve 22 is caused by the drum [4 to return to its initial position and thus to stop the rotation of the drum to permit the wipers to dwell on the margin of the upper. Thereafter the valve 22 is again moved, this time automatically, to cause the machine to complete its cycle. In addition to the previously mentioned valves, the machine herein shown has a valve 34 hereinafter referred to which controls the admission of fluid from the manifold through a pipe line 36 to a cylinder 38 shown diagrammatically in Fig. 10, this cylinder havin therein a piston which at the proper time in the cycle operates a lever 40. As disclosed in Letters Patent No. 2,403,003, granted on July 2, 1946, on an application of mine, the lever 40, which corresponds to the lever 1'72 therein shown, serves by its movement to reduce the pressure of the fluid whereby the grippers are closed on the upper before applying a second pull thereto.

As disclosed in Letters Patent No. 2,437,596, a toe-lasting machine constructed substantially as outlined above has been provided heretofore with toe-pressing and trimming means, identified generally by the reference characterQS in said Letters Patent, such means being arranged to receive the shoe after the toe-lasting operation and to apply pressure to the cement-lasted marginal portion of the toe end of the upper until the cement has more firmly set, mechanism also being provided for removing at the same time any surplus material at the margin of the toe end of the upper. The present invention provides. in place of the earlier construction, improved toe-pressing and trimming means identified generally by the reference character 42 (Fig. 1), the insole-indenting attachment S2 and the accumulator 84 further shown in the last-mentioned Letters Patent being omitted. Secured to the frame of the lasting machine in the construction herein shown is a casting 34 formed to provide a cylinder 46 (Fig. 2) in which is mounted a vertically movable piston 68. Below the piston. are two'springs 50 and 52 which tend to force it upwardly, these springs being seated at their lower ends in a cap member 54 secured to the lower end of the casting 44. Upward movement of the piston is limited by engagement of the head of a screw 56 thereon with a boss 58 on the casting 44. The cylinder E6 and the piston 48 thus serve as an accumulator, identified generally by the reference character 60, for the storage of fluid under pressure. For charging the accumulator a pipe 62 leads from the previously mentioned pipe .line 36 (Fig. to a valve housing 64 (Fig.4) inserted in a bore in the casting 44 and extending into the upper end of the cylinder 46. A passageway 65 in this housing is normally closed by a ball check valve 68 to prevent escape of fluid from the accumulator, the valve being mounted in one end of a movable valve cage It controlled by a spring 12. It will thus be understood that each time fiuid is admitted by the valve 34 from the manifold 8 to the cylinder '38 of the lasting machine fluid is also forced into the accumulator 60 past the check valve 63 if the pressure in the accumulator is less than that in the manifold. Movement of the accumulator piston 48 by the pressure of the fluid thereon is limited by its engagement with a shoulder I4 on the upper end of the cap member 54.

Secured on the top of the casting 44 is a plate 76 and mounted on this plate is a casting I8 which serves as part of a housing for the toepressing and trimming mechanism. Supported on the casting I8 is a top casting 8B which partially incloses a portion of the mechanism, this casting having pivotally mounted thereon a cover 82 of transparent plastic material which may be swung upwardly when it is desired to afiord more convenient access to parts below it. Mounted in recesses in the sides of the casting 36 is a plate 84 (Figs. '7 and 8), corresponding to the plate i upwardly against it, the plate being locked in proper position by a spring-pressed pin 85 slidingly mounted in the casting and extending into a slot in the edge of the plate. which may be termed a presser, has a recess 86 therein, so'that it'will extend inward only over '4 the marginal portion of the shoe bottom around the end and along the sides of the .toe, and it is flexible enough to permit it to conform to such curvature as the bottom of the toe end of the shoe may have in response to pressure of the shoe thereon. To force the shoe upwardly against the plate there is provided a toe rest 88 arranged to engage the top face of the toe underneath and The plate 8%,

secured to a bracket I09 fast on the casting 94. When the valve is thus in its uppermost position an annular recess III] therein is in communication with the lower end of the cylinder 92 through a passageway 'I I2 formed in the casting 94. At this time the annular recess in the valve is also in communication with a passageway I I4 leading to the sump I2, this passageway being formed in the casting 94, the plate "IS, the casting 44, the cap member 54 and finally in a pipe IIB (Fig. 2). to exhaust. Leading also from the valve I62 to the accumulator 60 is a passageway H8 which,

however, is closed by the valve in its initial position, as is clear from Figs. 6 and 10.

It will be understood that in order to admit fluid from the accumulator 60 to the cylinder 92 the valve I02 must be moved downwardly to close the exhaust passageway I I4 and to cause the annular recess lid in the valve to connect the passageways I i2 and us. The construction herein shown is such that this movementof the valve is effected directly by the shoe when the operator presents the shoe in position for the toe-pressing and trimming operations. For this purpose there is provided a forwardly and rearwardly extending lever I26 (Figs. 5 and 6) the front portion of which is bifurcated and is pivotally mounted by means of two trunnions I22 on upwardly extend ing ears I24 formed on a bracket I26 fast on the casting 94. Pivotally mounted on the rear end of the lever I is a downwardly extending bar I28 the lower end of which is normally positioned over the. upper end of the valve 1532, as shown in Fig. 6. This position of the bar is determined by its engagement with the one face of a triangular block I36 fast on a shaft I32 which, for a purpose hereinafter explained, is mounted to turn in the bracket N39. The bar I28 is held against the block i by a spring-pressed pin :33 mounted in the lever I20 and bearing against the front face of the bar. Mounted in the bracket I26 is a spring-pressed pin I 38 which engages the lever I20 underneath and tends to swing its rear end upwardly, such 'movement of the .lever being upwardly extending arm I 34, and firmly clamped supported on the upper end of a piston 90 vertically movable in a cylinder 92 which is formed in a casting 94 secured to the plate I6. The

piston is held initially in its lowest position by control of a piston valve I62 (Figs. 6; 9 and 10).

This valve is vertically movable in a bore formed in the casting 94 and is held initially in its uppermost position by a spring HM engaging it underneath and seated at its lower end in arecess in the plate IS. The limit of upward movement of the valve is determined by engagement of a shoulder I06 thereon (Fig. 6) with a plate I08 in a split upper end portion of this arm is a stem I48 fast on a crossbar M8. on studs I56 (Fig. 8) on the opposite ends of this crossbar are two forwardly extending arms N52 to which are secured the end portions of a substantially U-shaped flexible band I5 5 arranged to receive and embrace the toe end of the shoe when the operator presents the shoe under the plate 84. This band may be made of leather or any other suitable material and has fast on -its' intermediate portion a finger :55 extending into a vertical slot in'the crossbar I43 to assist in supporting that portion of the band. Pivctally connected at its opposite ends to the arms I52 is a link I58, the connection between the link and.

equal movements toward or from each other, so

that the band E54 will properly position the toe end of the shoe widthwise relatively to the Accordingly the cylinder 92 is open Pivotally mounted presser plate 84. Pressure of the toe-end'face of the shoe against the band, moreover, serves to swing the lever I20 in the direction to lower the bar I28 and thus to move the valve I02 into position to cause the toe rest 83 to move upwardly and clamp the shoe against the plate 84. Movement of the lever I20 by the pressure of the shoe on the band is limited by engagement of a screw I80 in the lever with the shoulder I42 on the bracket I20, as shown in Fig. '7. The band i54, therefore, serves to position the shoe lengthwise as well as to position its toe end laterally. The valve I02 having been moved as described into position to cause the toe rest to clamp the shoe against the plate 84, it is held by the shoe in that position until it is released, as hereinafter described, to cause the toe rest to release the shoe. For removing from the margin of the upper any surplus material which may project inwardly beyond the presser plate 84 and upwardly from the insole near the end of the toe, there is provided a trimming knife or cutter I02 (Fig. '7) carried by a knife holder l64. The knife is secured to the holder by two screws IEO which extend through slots I68 in the holder and are threaded in blocks I10 lying partly in the slots I60 and partly in guideways in the top of the holder. The knife, therefore, may be adjusted relatively to the holder in directions lengthwise of the shoe. Screws I12 threaded in the holder and engaging the blocks I10 facilitate precise adjustment of the knife. At its front end the holder IE4 is pivotally mounted on the lower end of an arm lit, the arm being pivotally mounted at its upper end on a rod I76 supported on the top casting Rearwardly of the arm I14 the holder is further supported by two downwardly extending arms i; of a bell-crank lever I80 mounted on a shaft I82 on the casting 80. The connections between the holder and the arms I18 comprise links I84 (Fig. 8) the rear ends of which are pivotally connected by pins I88 to the holder and intermediate portions of which are pivotally mounted on pins I88 on the arms, the links lying in slots in the arms. Mounted in the arms I18 are spring-pressed pins I90 which bear on the rear ends of the link I84 and therefore tend to swing the holder downwardly about its pivotal connection with the arm I14, such movement of the holder being limited by engagement of screws I92 in the front end portions of the links with shoulders on the arms in the above-mentioned slots. The arms H4 and I78 are so arranged that initially, as shown in Fig. 2, the knife IE2 is but little inclined relatively to the upper-engaging presser plate 84, as compared with the construction shown in Letters Patent No. 2,437,696, and as the armsswing rearwardly and downwardly to operate the knife they cause it to assume a more nearly parallel relation to the plate before it engages the plate. After the knife arrives in position to engage the plate the links I84 are swung upwardly to some extent against the resistance of the springpressed pins I90 inresponse to the pressure of the plate 84 on the knife near its cutting edge as the knife is moved along the plate, the knife being held yieldingly against the plate in the V upper-trimming operation.

The bell-crank lever I80 has a rearwardly extending arm I06 provided with a pin I on which is pivotally mounted the upper end of a link 200. The lower end of this link is pivotally connected to the upper end of a piston 202 in contiguous relation to the casting 94 (Fig. 9). Two springs 208 connected at their lower ends to the plate 16 and at their upper ends to a pin 2I0 (Fig. 3) extending through a reduced upper end of the piston tend to move it downwardly and hold it initially in a position determined by engagement of the pin with an annular member 2I2 secured on the casting 206 in concentric relation to the cylinder 204. The piston 202 is moved upwardly to operate the knife I82 by fluid admitted to the lower end of the cylinder 204 from the manifold 8 of the lasting machine by the valve 34 (Fig. 10) when this valve is moved to admit fluid through the pipe line 36 to the cylinder 38 at a predetermined time in the cycle of operations of the machine. For this purpose a passageway 2I4 (Figs. 4, 5, 9 and 10) formed in the casting 44, the plate 16 and the casting 94 leads from the valve housing 64 at the outer side of the check valve 68 to an annular recess 2 I 6 (Fig. 6) formed in a normally idle piston valve 2I8 which, however, may be moved downwardly in a bore formed in the casting 94 against the resistance of a spring 220 for a purpose hereinafter explained. The normal position of this valve is determined by the engagement of a shoulder 2Z2 thereon with the previously mentioned plate I08. Also communicating with the annular recess in the valve H8 is a passageway 224 formed in the castings 94 and 206 and leading to the lower end of the cylinder 204. Through the annular recess in the valve 2I8, therefore, the cylinder 204 is in open communication with the check valve housing 64 and the pipe line 36 leading to this housing, ready to receive fluid from the manifold 8 when the valve 34 is operated. It will also be understood that when the valve 34 is moved later into position to release fluid from the cylinder 38 in the cycle of operations of the lasting machine, fluid is released also from the cylinder 204 to cause the springs 208 to impart return movements to the piston 202 and the trimming knife I62. As the piston 202 is moved downwardly after the toe-trimming operation it causes the toe rest 88 to release the shoe. For this purpose an upwardly and downwardly extending bar 226 (Figs. 5 and 6) is supported on a stud 228 which is secured to the bracket I00 and extends through a slot 230 in the bar. Pivotally. mounted on a stud 232 which is fast in the bar 225 above the stud 223 is another shorter bar 234. A spring 236 connected to both bars tends to swing them toward each other. Initially, however, as shown in full lines in Fig. 6, their upper end portions are held a short distance apart by a roll 238 supported on the bracket I09 and engaging the lower end portion of the bar 225 and by a finger 240 fast on the piston 202 (Fig. 3) and engaging the bar 234 just below an inclined shoulder 242 on this bar. When the piston 202 moves upwardly, the finger 240, by its. engagement with the shoulder 242 on the bar 234, imparts upward movement to both the bars as far as permitted by the slot 230 in the bar 226. By this movement a recess 244 in the lower end of the bar 226 is carried to a position opposite the roll 238, thus pergus et travels upwardly until it is over the upper end of the bar 226, as illustrated by dotted lines in Fig. 6. Near the end of its upward movement the finger engages a curved face 246 on the bar 226 and thereby deflects the upper end of the bar forwardly to permit it to pass the bar, and it also engages a forwardly extending lug 248 on the upper end of the bar 234 to insure that both bars will be fully raised before the piston 202 starts downwardly. At the beginning of the downward movement of the piston the finger 24B, engaging the upper end face of the bar 228, causes the lower end of the bar to swing the triangular block I30 about the pin I32, thus causing this block to swing the valve-controlling bar I28 from over the upper end of the valve I02 to release the valve. When the valve is thus released it is moved upwardly by its spring Hi4 to release the fluid from the cylinder 92 and thereby to cause the toe rest 88 to release the shoe. Immediately after such release of the valve leg the roll 238 swings the bar 226 away from under the finger 240 so thatthe finger can return to its initial position. When the shoe is thus released it falls, still bottom upward, on an inclined shoe receiver 250 the construction of. which does not differ substantially from the disclosure of Letters Patent No. 2,437,696.

Provision is afiorded for operating thetrimming knife E62 on the last shoe by fluid from the accumulator til, thus rendering it unnecessary to cause the development of fluid pressure in the manifold 8 of the lasting machine or to manipulate the valve 35 of that machine. Leading from the valve 2 I 8 to the accumulator is a passageway 252 (Figs. 6, 9 and 10) formed in the casting 94-, the plate IS and the casting M. This passageway, however, is normally closed by the valve which, as hereinbefore explained, is normally idle. To cause the knife to operate on the last shoe the valve 2I8 is moved downwardly to close the passageway 2M leading to the valve 34 and to open communication between the passageway 224 and the passageway 252. For this purpose a lockshaft i (Figs. 5 and 6) mounted to turn in the lower end of the bracket I26 has fast thereon an arm 2% which carries a roll 258 in engagement with the upper end of the valve ZIB. Also fast on this rcckshaft is an arm 25!] having pivotally mounted thereon a block 262 to which is secured the rear end of a rod 264 extending forwardly through a bore in the casting 7 8 and having on its front end a knob 266. It will accordingly be understood that by pulling on the knob 26% the operator may move the valve 2I8 downwardly as described to cause the trimming knife to operate, and that when he releases the knob the valve is moved upwardly to its initial position by the spring 229 to cause the return of the knife. It will further be understood that the release of the last shoe by the toe rest88 takes place in response to the return movement of the knifeoperating piston 202 in the same manner as the release of any other shoe. I

Under some conditions it may be unnecessary to remove any surplus material from the margins of the toe ends of the uppers. To avoid unnecessary wear the construction shown is therefore such that any effective movement of the trimming knife I62, i. e., any movement of such extent as to render it eifective to trim an upper if the "upper on the insole. slidingly mounted in the annular member 2l2 porting For this purpose there is (Figs. 3and 5) a rod 268 which by means of a knob 2'56 on its outer end may be moved inwardly into position to engage a shoulder 212 on the piston EM and thus to serve as a stop to prevent the piston from being moved upwardly far enough to cause the trimming knife to move into engagement with the plate 34. Movements of this rod in opposite directions are limited by a screw 214 which is threaded in the annular member 2 I2 and extends into a slot 275 in the rod. The shoulder 27-2 on the piston, however, is located initially far enough below the rod 268 to permit the piston to be moved upwardly a short distance. Accordingly the finger 240 carried by the piston is moved upwardly farenough to cause the, lower end of the bar 226 to be swung inwardly over the rearward-1y extending portion of the block I30, and when the piston is thereafter'moved downwardly from the position determined by the rod 268 the finger 2% acts on a shoulder 278 (Fig. 6) on the bar 226 to cause the release of the valve I02 and thereby to cause the toe rest 88 to release the shoe.

To enable the operator to cause the toe rest 88 being limited by. engagement of a top face of the block I 39 with a shoulder on the bracket I09. It will be understood that in order to cause the toe rest to release the shoe the operator moves the rod 284 in a rearward direction, thus causing the block I39 to swing the bar I28 away from over the valve I02.

To dispose of the waste material removed from successive shoes there is provided an ejector 290 (Fig. 7) and operating mechanism therefor which are constructed substantially as disclosed in Letters Patent No. 2,437,696 and therefore need not be herein described in detail. The ejector is operated in response to return movement of the knife-operating lever I88 to push the waste material rearwardly from over the plate 84 into a downwardly inclined trough 292 leading to a suitable receptacle. 7

The manner of operation of the construction shown, in so'far asit is of interest with reference to the present invention, will now be briefly summarized. Immediately upon the release of a shoe by the lasting machineat the end of its cycle of operations the operator presents the shoe with its toe end under the presser plate 84, moving it rearwardl into. engagement with the toeembracing band lil twhich, by reason of the provision for equal swinging movements of the bandcontrollingarms I52 toward or from each other, determines the position of the toe end of the shoe widthwise relatively to" the presser plate and the trimming means. By pressure of the toe-end face of the shoe against the'band the band-supmovement to the bar I28 and thereby to move the valve I102 downwardly into position to admit operating fluidfrom the accumulator 60 into the cylinder 92 to cause the toe rest 88 to move upwardly and clamp the shoe against the plate 84. This movement of the lever is limited by'engageleverI 20* is operated to impart downward ment of the screw 169 with the shoulder [42, so

that the band I54 also determines the position of the shoe lengthwise. The operator then presents the next shoe to the lasting machine and again starts the cycle of operations of that machine. At the time in the cycle when the valve 34 is operated to admit fluid from the manifold 8 to the pipe line 36 communicating with the cylinder 38 of the lasting machine, fluid also is admitted by the same valve to charge the accumulater 63, if the pressure therein is less than that in the manifold 8, and to the cylinder 284 to operate the trimming knife H32 in the manner described. As the'piston 262 is moved upwardly to operate the knife the finger 248 thereon serves first to raise the two bars 228 and 234 (Fig. 6) as far as permitted by the stud 228 and the slot 230, thus causing the lower end of the bar 228 to the fluid is released from the cylinder 204 and the piston 262 is moved downwardly by the springs 28% to impart return movement to the trimming knife. In response to the downward movement of the piston the finger 240 thereon first acts on the bar 226 to cause the block 30 to swing the bar 128 away from over the valve I02, thus releasing the valve and causing it to be moved upwardly by its spring H34 into position to release the fluid from the cylinder 92. This causes the toe rest to release the shoe, which then falls on the shoe receiver 250. Shortly after the beginning of the downward movement of the bar 226 by the pressure of the finger 240 thereon the roll 238 swings the bar from under the finger and thus permits the finger to return to its initial position.

If it is desired to prevent any effective movement of the trimming knife I52, the operator moves the rod 268 (Figs. 3 and 5) inwardly into position to limit the upward movement of the piston 262 by engagement of the rod with the shoulder 2'12 on the piston. In that case fluid is admitted by the valve 34 to the cylinder 204 in the next cycle of the lasting machine, but the .trimming knife is prevented from engaging the plate 86. Accordingly the only operation performed on the shoe is the pressing of the marginal portion of the upper on the insole by the plate 84. When the movement of the piston 202 is thus limited, the finger 2:32 thereon nevertheless is moved upwardly far enough to permit the lower end of the bar 226 to be swung into position over the rearwardly extending portion of the block H0, and upon return movement of the piston the finger acts on the shoulder 218 on the bar to effect the release of the valve I02 and thus to cause the toe rest 88 to release the shoe.

In operating on the last shoe, when no cycle of operations is being performed by the lasting machine, the operator causes the trimming knife to operate on the shoe by pulling forwardly on the knob 266 and by thus moving the valve 2I8 downwardly to admit fluid from the accumulator E0 to the cylinder 2%. After the operation of the knife the operator releases the knob 266 to cause the valve 218 to be returned by its spring 220 into 12 position to release the fluid from the cylinder 2M, whereupon the piston 202 is moved downwardly to return the trimming knife and to cause the toe rest to release the shoe.

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

1. In a machine for operating on shoes, means for lasting the toe-end portion of a shoe in a cycle of automaticoperations of the machine, means constructed and arranged to receive the shoe after the toe-lasting operation and to clamp and hold the shoe independently of a cycle of operations of the machine, a trimming knife for trimming off the surplus margin of the toe end of the upper while the shoe is so held, fluid-operated means for operating said knife thus to trim the upper, a source of supply of fluid under operating pressure terminable with each cycle, an automatically controlled valve for admitting operating fluid from said source to said fluid-operated means as an incident to the next cycle of operations of the machine, another source of supply of fluid constantly under pressure, and another valve controlled by the operator for admitting operating fluid from said other source to said fluid-operated means to operate the knife independently of any cycle of operations of the ma.- chine.

2. In a machine for operating on shoes, means for lasting the toe'end portion of a shoe in a cycle of automatic operations of the machine, means constructed and arranged to receive the shoe after the toe-lasting operation and to clamp and hold the shoe independently of a cycle of operations of the machine, a trimming knife for trimming off the surplus margin of the toe end of the upper while the shoe is so held, fluid-operated means for operating said knife thus to trim the upper, a source of supply of operating fluid under pressure, an automatically controlled valve for admitting operating fluid from said source to said fluid-operated means as an incident to the next cycle of operations of the machine, means for terminating the operating pressure of the fluid at said source at the end of each cycle, another source of supply of operating fluid under pressure unaffected by the termination of the cycle, and another valve controlled by the operator for interrupting communication between said firstnamed valve and said fluid-operated means and for admitting operating fluid from said other source to said fluid-operated means to operate the knife independently of any cycle of operations of the machine.

3. In a machine for operating on shoes, fluidoperated means for lasting the toe-end portion of a shoe in a cycle of automatic operations of the machine, a chamber for holding fluid under pressure for the operation of said fluid-operated means, means for terminating the operating pressure-of the fluid in said chamber at the end of each cycle, means constructed and arranged to receive the shoe after the toe-lasting operation and to clamp and hold the shoe independently of a cycle of operations of the machine, a trimming knife for trimming off the surplus margin of the toe end of the upper while the shoe is so held, fluid-operated means for operating said knife thus to trim the upper, an automatically controlled valve for admitting operating fiuid from said chamber to said last-named fluid-operated means as an incident to the next cycle of operations of the machine, an accumulator for 13 receiving fluid under pressure from said chamber and for holding the fluid thus under pressure when the pressure is terminated in said chamber, and another valve controlled by the operator for admitting operating fluid from said accumulator to said last-named fluid-operated means independently of any cycle of operations of the machine. V

4. In a machine for operating on shoes, a trimming knife for trimming off the surplus margin of the upper from the lasted toe end of a shoe, fluid-operated means for clamping the toe end of the shoe to hold it in position for the operation of said knife thereon, a valve for admitting operating fluid to said fluid-operated clamping means and for thereafter releasing the fluid therefrom to cause said clamping means to release the shoe, a device arranged to retain said valve in position thus to admit the fluid, said device being displaceable to release the valve, a member mounted for movement to operate said knife and also for reverse movement, means arranged to be operated by the reverse movement of said member thus to displace said retaining device, and means for moving said valve into position to release the fluid after the retaining device has thus been displaced. I

5. In a machine for operating on shoes, a trimming knife for trimming off the surplus margin of the upper fromthe lasted toe end of a shoe, fluid-operated means for clamping the toe end of the shoe to hold it in position for the operation of said knife thereon, a valve mounted for movement into position to admit operating fluid to said fluid-operated clamping means and for reverse movement thereafter to release the fluid therefrom and thereby to cause said clamping means to release the shoe, mechanism for moving said valve intoposition to admit the fluid and for holding it in that position, said mechanism including a valve-holding member displaceable to release the valve, a member mounted for movement to operate said knife and also for reverse movement, means for thus displacing saidvalveholding member to release the valve by the reverse movement of said knife-operating member, and a spring for imparting the reversemovement to the valve when .it is thus released.

6. In a machine for operating on shoes, a trimming knife fortrimming off the surplus margin of the upper from the lasted toe end of a shoe, fluid-operated means for clamping the toe end of the shoe to hold it in position for the operation of said knife thereon, a valve controlled by the shoe for admitting operating fluid to said fluid-operated clamping means in response to presentation of the shoe in position for the trimming operation, a device arranged to retain said valve in position thus to admit the fluid, said device being displaceable to release the valve, a member mounted for movement to operate said knife and also for reverse movement, means arranged to be operated by the reverse movement of said member thus to displace said retaining device, and means for moving the valve into position to release the fluid from said clamping-means after the retaining device has thus been displaced to cause the clamping means to release the shoe. i

'7. In a machinefor operating on shoes, a trimming knife for trimming off the surplus margin 7 and thereby to cause said clamping means to re-' of the upper from the lasted toe end of a shoe,

movement to-admit operating fluid to said fluidoperated clamping means and for reverse movement thereafter to release the fluid therefrom lease the shoe, mechanism controlled by the shoe for moving the valve into position to admit the fluid and for holding it in that position'in response to presentation of the shoe in position for the trimming operation, said mechanism includinga valve-holdingmember displaceable to release the valve, a member mounted for movement to operate said knife and also for reverse movement, means for thus displacing said valve,-

holding member to release the valve by the reverse movement of said knife-operating member, and spring means for imparting the reverse movement to the valve when it is thus released.

8. In a machine for operating on shoes, a trimming knife for trimming off the surplus margin of the upper from the lasted toe end of a shoe, fluid-operated means for clamping the toe end of the shoe to hold it in position for the operation of said knife thereon, a valve mounted for move,- ment into position to admit operating fluid to said fluid-operated clamping means and for re verse movement thereafter to release the fluid therefrom and thereby to cause said clamping means to release the shoe, mechanism for mov-.- ing said valve into position to admit the fluid and for holding it in that position, said mechanism including a valve-holding member displaceable to release the valve, a fluid-operated piston mounted for movement to operate said knife and also for reverse movement, means for thus dis,- placing said valve-holding member to release the valve by the reverse movement of said piston, and spring means for imparting the reverse movemen to the valve when it is thus released.

9. In a machine for operating on shoes, a presser for engaging th marginal portion of the upper on the bottom of the lasted toe end of a shoe, a toe rest for forcing the toe end of the shoe against said presser, fluid-operated means for thus operating said toe rest, a valve for admitting operating fluid to said fluid-operated means and.

for thereafter releasing the fluid therefrom to cause the toe rest to release the shoe, a device for holding the valve in position to admit the fluid, a trimming knife fortrimming off the surplus margin of the toe end of the upper while the shoe is held against the presser by said toe rest, a member mounted for movement to operate said knife and also for reverse movement, means for moving said valve-holding device into position to release-the valve by the reverse movement of said member, and means for moving the valve when thus released into fluid-releasing position.

10. In a machine for operating on shoes, a.presser for engaging the marginal portion of the upper on the bottom of the lasted toe end of a shoe, a toe rest for forcing the toe end of the shoe against said presser, fluid-operated. means for thus operating said toe rest, a Valve mounted for movement to admit operating fluid to said fluidoperated means and for reverse movement thereafter to release the fluid therefrom and thereby to causethe toe rest to release the shoe, mechanism controlled by the shoe for moving the valve into position to admit the fluid and for holding it in that position in response to presentation of the shoe to the presser, said mechanism including a valve-holding member displaceable to release the valve, a trimming knife for trimming off the surplus margin of the toe end of the upper while the shoe is held by the toe rest, a member mounted for movement to operate said knife and also for reverse movement, means for displacin said valve-holding member to release the valve by the reverse movement of said knife-operating member, and spring means for imparting the reverse movement to the valve when it is thus released.

11. In a machine for operating on shoes, fluidoperated means for clamping a shoe to hold it in position for an operation thereon, a valve mounted for movement to admit operating fluid to said fluid-operated means, a toe band arranged to embrac the toe end of the shoe and to position that end of the shoe laterally, said toe band being mounted for movement in a direction lengthwise of the shoe by the pressure of the shoe thereon upon presentation of the shoe in position to be clamped, and means for moving said valve into position to admit the fluid by that movement of said toe band.

12. In a machine for operating on shoes, a member arranged to engage the bottom of the iorepart of a shoe, a toe rest movable to force the shoe against said member, fluid-operated means for thus moving said toe rest, a valve mounted for movement to admit operating fluid to said fluid-operated means, a toe band arranged to embrace the toe end of the shoe and to position that end of the shoe laterally, said toe band being mounted for movement in a direction lengthwise of the sho by the pressure of the toe end of the shoe thereon upon presentation of the shoe in position to be forced against said member, and means for moving said valve into position to admit the fluid by that movement of said toe band.

13. In a machine for operating on shoes, a member arranged to engage the bottom of the forepart of a shoe, a toe rest movable to force the shoe against said member, fluid-operated means --for thus moving said toe rest, a valve mounted for movement to admit operating fluid to said fluid-operated means, a flexible toe band arranged to embrace the toe end of the shoe, arms connected to the ends of said toe band and mounted to swing laterally of the shoe, means connecting said arms together for equal swinging movements toward or from each other to cause the toe band to position the toe end of the shoe laterally, said arms and the toe band being mounted for movement in a direction lengthwise of the shoe in response to pressure of the toe end of the shoe on the toe-band upon presentation of the shoe in position to be forced against said member, and means for moving said valve into position to admit th fluid by such movement of the arms and the toe band.

14. In a machine for operating on shoes, a member arranged to engage the bottom of the forepart of a shoe, a toe rest movable to clamp the shoe against said member, fluid-operated means for thus moving said toe rest, a valve mounted for movement to admit operating fluid to said fluid-operated means and also for reverse movement, a device arranged to be engaged by the toe-end face of the shoe and to be moved by such engagement in a direction lengthwise of the shoe as the shoe is presented in position to be clamped, meansfor transmitting movement mechanically from said device all the way to said valve and for thereby moving the valve thus to admit the fluid, said last-named means includin a member adapted to engage said valve directly and displaceable to release the valve while the shoe is still in engagement with said device, manually operable means for displacing said member to release the valve, and spring means for imparting reverse movement to the valve when it is thus released.

15. In a machine for operating on shoes, a plate for engaging the upper on the bottom of the lasted toe end of a shoe, a trimming knife for removing the surplus margin of the toe end of the upper by movement along said plate, a holder on which said knife is mounted, members supporting said holder and mounted to swing respectively about axes extending widthwise of the shoe and spaced apart lengthwise of the shoe to carry the knife heightwise and lengthwise of the shoe into engagement with said plate and thereafter to move it lengthwise of the shoe along the plate, one of said members being pivotally connected to the holder in a location comparatively remote lengthwise of the shoe from the cutting edge of the knife, means connecting the other of said members to the holder nearer said cutting edge, said connecting means being constructed and arranged to permit swinging movement of the holder heightwise of the shoe about its pivotal connection with the member more remote from the cutting edge of the knife, and spring means tending thus to swing the holder in the direction to hold the knife against said plate in the upper-trimming operation.

16. In a machine for operating on shoes, 2. plate for engaging the upper on the bottom of the lasted toe end of a shoe, a trimming knife for removing the surplus margin of the toe end of the upper by movement along said plate, a holder on which said knife is mounted, members supporting said holder and mounted to swing respectively about axes extending widthwise of the shoe and spaced apart lengthwise of the shoe to carry the knife heightwise and lengthwise of the shoe into engagement with said plate and thereafter to move it lengthwise of the shoe along the plate, one of said members being pivotally connected to the holder in a location comparatively remote lengthwise of the shoe from the cutting edge of the knife, means connecting the other of said members to the holder nearer said cutting edge in locations spaced apart widthwise of the shoe, said connecting means comprising links arranged to swing heightwise of the shoe and thus to permit similar swinging movement of the holder about its pivotal connection with the member more remote from the cutting edge of the knife, and spring means tending thus to swing the holder in the direction to hold the knife against said plate in the upper-trimming operation.

BERNI-IARDT JORGENSEN.

References Cited in the file Of this patent UNITED STATES PATENTS Number Name Date 2,291,631 Jorgensen Aug. 4, 1942 2,395,874 Jorgensen Mar. 5, 1946 2,406,463 Jorgensen Aug. 27, 1946 2,437,696 Jorgensen Mar. 16, 1948 2,486,537 Senfleben Nov. 1, 1949

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