US2143881A

US2143881A - Shoe machine

Info

Publication number: US2143881A
Application number: US184643A
Authority: US
Inventors: Jacob C Jorgensen
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1938-01-12
Filing date: 1938-01-12
Publication date: 1939-01-17
Anticipated expiration: 1956-01-17

Description

Jan. 17, 1939. .L c. JORGENSEN SHOE MACHINE Filed Jan, l2., 193.8 5 Sheets-Sheet 1 J. C. JORGENSEN SHOE MACHINE Jan. 17, 1939.

Filed Jan. l2, 1938 5 Sheets-Sheet 2 Jan. 17, 1939.

'.J. c. .l'orwcsllusrzmll 2,143,881

SHOE MACHINE Filed Jan. 12, 1958 I5 Sheets-Sheet 4 Jan. 17,1939. J. c. JORGENSEN 2,143,881

SHOE MACHINE Filed Jan.l l2, 1938 5 Sheets-Sheet 5 wwf/WUR Patented Jan. 17, 1939 UNITED STATES PATENT OFFICE SHOE MACHINE Application January 12, 1938, Serial N0. 184,643

28 Claims.

This invention relates to machines for use in the manufacture of shoes and is herein illustrated as applied to a heel-end lasting machine such as disclosed in United States Letters Patent No. 2,059,241, granted on November 3, 1936 upon an application of mine. It is to be understood, however, that in its more general aspects the invention is not limited to machines of that particular character or to machines for lasting shoes.

The machine shown in the above-mentioned Letters Patent comprises power-driven means for operating on a shoe in a cycle of automatic operations of the machine, and a shoe support or jack movable to present the shoe in position to be operated upon prior to the starting of the cycle of operations. Such a machine has been provided heretofore with power means operated by huid-pressure for imparting to the shoe support its shoe-presenting movement, thus relieving the operator of the labor previously required for that operation and permitting a substantial increase in the output of the machine, as disclosed in United States Letters Patent No. 2,085,755, granted on July 6, 1937 upon an application of mine. An object of the present invention is still further 'to facilitate and expedite use of the machine, With consequent increase in output. For the purposes in View, the invention, in one novel aspect, provides a construction whereby the starting of the cycle of operations of the machine results from movement of the same controlling member, herein shown as a treadle, which `the operator utilizes to cause the power means to act on the shoe support, so that the operator is no longer required, as heretofore, to use a second hand-operated member to start the machine. This contributes to speed in the use of the machine and, when a treadle is utilized as the controlling member, permits the operator to control the shoe with both hands until the machine is started. Since it is often desirable that the operator be afforded an opportunity to inspect the shoe and to adjust it if necessary after the shoe-presenting movement of the shoe support and prior to any operation of the machine on the shoe, the construction herein shown is such that the starting of the cycle of operations results from a further movement of the controlling member, which may be variably delayed, after its movement to cause the operation of the shoe support. As herein illustrated, and in accordance with a feature `of the invention, 'both `the movement of the shoe support and also the starting of the machine are effected by vpower means, the construction shown comprising iiuidoperated devices which are movable independently of each other to perform respectively these different operations when they are rendered operative as a result of movement of the abovementioned controlling member. Under some conditions the operator may find it practicable to forego any opportunity to inspect and adjust the shoe after its presentation by the shoe support, in which case he may move the controlling member the full distance at one operation. In order to insure that under those conditions the shoe will have been moved fully to its proper position before the machine begins to operate thereon, the invention further provides means for l5 preventing the starting of the machine as a result of such movement of the controlling member until the shoe support has substantially completed its movement. This means, in the construction shown, comprises a latch which normally prevents movement of a valve whereby fluid is admitted to the fluid-operated device which acts to start the machine, the latch being moved to an inoperative position by the fluid-operated device which acts on the shoe support.

In accordance with a further feature, the invention provides alternatively a construction whereby the starting of the machine is controlled by a portion only of the means through which the movement of the shoe support is controlled by the operator. As illustrated, the treadle which the operator depresses to cause the iiuid- `pressure means to act on the shoe support includes a member arranged to be tipped by the operators foot relatively to other portions of the treadle, and mechanism adjacent to the treadle is arranged to be operated by this member to render the fluid effective to start the machine.

The above and other features of the invention, including novel means for limiting automatically the movement of the fluid-operated device which acts to start the machine, and various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings,

Fig. 1 is a view mainly in left-hand side elevation of the lower portion of a heel-end lasting machine of the character disclosed in the previously mentioned Letters Patent with features of the present invention embodied therein;

Fig. 2 is a plan View of a portion of the structure shown in Fig. 1, with certain parts in section;

Fig. 3 is a section on the line III--III of Fig. 1;

Fig. 4 is mainly a vertical sectional view on the line IV-IV of Fig. 2;

Fig. 5 is a section on the line V-V of Fig. 2;

Fig. 6 is a View in a direction diagonally toward the rear and right-hand side of the machine, showing partly in elevation and partly in section a portion of the structure shown in'Fig. 1;

Fig. 7 is a section on the line VII-VII of Fig. 2;

Fig. 8- is a vertical sectional view from the rear, showing a clutch through which mechanisms which operate on the shoe are driven and other parts of the machine associated therewith;

Fig. 9 is a perspective view showing a portion of mechanism provided for actuating the clutch to start the machine, with parts broken away;

Fig. 10 is a view partly in left-hand side elevation and partly in section, showing portions of the shoe support or jack and of other parts in their relation to a shoe presented in position to be operated upon;

Fig. 11 is mainly a plan View of alternative means for controlling the fluid-pressure mechanisms which operate the jack and actuate the clutch, parts being shown in section;

Fig. 12 is a View partly in section on the line XII-XII of Fig. l1, showing also in elevation portions of the structure above that shown in Fig. 11, and

Fig. 13 is a view in front elevation of a portion of the structure shown in Fig. 11.

As more ully disclosed. in the above-mentioned Letters Patent No. 2,859,241, the machine in which the invention is herein illustrated as embodied includes in its organization a heel band 2 (Fig. 10) for embracing the heel-end portion of the shoe, wipers (i for wiping the margin of the upper inwardly over an insole or other shoe bottom part, and a plurality oi tack drivers 8 for driving tacks to fasten the upper in lasted position. The heel band, wipers and tack drivers are operated or controlled through clutch-driven parts and act automatically in the course of a cycle of power operations of the machine which is initiated by actuatin#Y or tripping the clutch. The position of the shoe heightwise in the lasting operation is determined by a holddown i 5 engaging the bottom of the heel end of the shoe. To support the shoe there is provided a shoe support or jack i2 which is mounted at l (Fig. l) for rearward swinging movement to carry the heel end of the shoe against the neel band 2 and includes a post iE movable upwardly to force the bottom of the heel end of the shoe against the holddown lil, this post being movable upwardly by a slide i8 at the lower end of the jack. The jack is swung rearwardly to carry the shoe against the heel band and its post i8 is raised to force the shoe against the holddown prior to the actuation of the clutch to start the cycle of operations. For this purpose there is p-ivotally mounted at 20 on a bracket 22 on the lower end of the jack a lever 2d the front end of which underlies the slide i8 and the rear end of which carries a roll 26 normally in engagement with a controlling block 28. The rear end of the lever 2li is connected by a link 38 to a lever 32 pivotally mounted on a rod 34 supported in a bracket at the base of the machine. It will thus be seen that, as the lever 32 is swung in the direction to pull downwardly on the link 34B, the jack is first swung rearwardly, since the block 28 prevents the lever 24 from swinging about its own axis. Near the end of the rearward swinging movement of the jack the roll 25 leaves the block 2S, whereupon the lever 24 is swung to raise the post I6 and force the shoe against the holddown as the jack completes its swinging movement to carry the shoe against the heel band.

'As more fully disclosed in Letters Patent No. 2,085,755, the operation of the lever 32 in the manner above described is effected by duid-pressure means. The huid-pressure means includes a casting 36 secured to the frame of the machine and serving in part as a container for fluid, preferably oil. Formed as a part of this casting is a cylinder 38 (Fig. 7), in which is mounted a piston i8 in engagement at its upper end with a vertical rod i2 carried by an arm ifi which is secured'to a bar G6 (Fig. 2) vertically movable in a guideway in the casting 36. At its lower end the bar d8 is pivotally connected to a link 48 (Fig. 1) the lower end of which is connected to the lever 32. It will thus be seen that the lever 32 is operated in the manner previously described by upward movement -of the piston i8 in the cylinder 38.

Below the piston 58, the cylinder 38 is in communication with a chamber 50 in the casting 33, and in this casting are also provided two other chambers 52 and 55. The main chamber or reservoir 52 is partly lled with oil under atmospheric pressure. By means of a continuously operating pump (not shown), as fully disclosed in Letters Patent No. 2,085,755, oil is drawn from the chamber 52 through a pipe 58 (Fig. 2) and is forced through a pipe 58 into the chamber 5d. From this chamber the oil is conducted either to the chamber 50 to operate the piston iii or back to the main chamber or reservoir 52, as determined by valve mechanism 60 (Fig. 7). Since this valve mechanism is identiical in construction and operation with that shown for the same purpose in the last-mentioned Letters Patent, it will not be described in detail. It includes a sleeve 52 provided with ports 5d, 55 and 88 communicating respectively with the

chambers

55, 58 and 52, and a piston valve member 'i5 vertically movable ,in the sleeve. Normally the chamber 5d is in communication, through the sleeve 62, not only with the chamber 58 but also with the chamber 52, as illustrated in Fig. 7, so that a circulation of cil is maintained without any substantial pressure in the chamber 58. Upward movement of the valve member l5, however, serves to close the ports 68 leading to the chamber 52, whereupon the oil is forced under pressure into the chamber 50 to raise the piston di? and thus operate the jack. The pressure of the oil in the chamber 50 is limited by a pressure-control valve 'i2 (Fig. 3) corresponding to the valve 232 shown in Fig. 3 of Letters Patent No. 2,085,755, whereby oil delivered by the pump is permitted to escape into the chamber 52 when a predetermined pressure has been developed in the

chambers

50 and 54, which pressure is thereafter maintained until the valve member i8 is again lowered to open the ports 58. While the pressure-control valve 'l2 and the parts immediately associated therewith are identical in construction with the disclosure of Letters Patent No. 2,085,755, they are, for convenience, mounted in a different location within the casting 38, as hereinafter explained.

As in the earlier construction, the valve member 'l5 is connected at its upper end to a rod 'I4 to which upward movement is imparted through a spring 'I6 by a forked arm 78 operated by a vertically movable bar 80 (Figs. 1, 2 and 3). The arm 'I8 carries a latch 82 (Fig. 2) controlled by a spring 84 and arranged to enter a notch 86 in the bar 86, so that when upward movement is imparted to the bar the arm 18 also is moved upwardly. The upward movement of the bar 88 is limited by a stationary pin 88 (Fig. l) to which the lower end of the spring 84 is connected, this pin extending into a slot 90 in the bar to limit its movement by engaging it at the lower end of the slot. Upward movement is imparted to the bar 88 as heretofore by a treadle 92 mounted to swing about the rod 34. For a purpose hereinafter explained, this treadle, in the construction shown in Fig. 1, is yieldingly connected to the bar 88. A link 94 extends upwardly from the rear end of the treadle and has threaded in its upper end the stem of a socket member 96 (Fig. 6) which carries a plunger 88 and a spring |66. At its uper end the plunger 98 is forked to provide arms |62 pivotally connected to the lower end of the bar 88. It will thus be seen that when the treadle is depressed the bar 88 is forced upwardly to the limit determined by the pin 88, after which the spring |88 controlling the plunger 98 will yield as the treadle is further depressed. A spring |64 connected to one of the arms |62 serves to return the treadle and the bar 86 when the operator releases the treadle. Prior to such release of the treadle, however, the fluid-pressure means is rendered 1 inoperative to control the jack by mechanism which is rendered operative shortly after the beginning of the cycle of operations of the machine, the jack being then under control of mechanism which acts independently of the iiuidpressure means, as disclosed in Letters Patent No. 2,085,755. The mechanism for thus rendering the duid-pressure means inoperative comprises a link |86 (Figs. 1 and 2) which acts on a pin |88 carried by an arm |8 fast on the latch 82. Downward movement of this link serves to swing the latch out of the notch 86 in the bar 48|), thus releasing the arm 18 which carries the latch and permitting the arm and the valve member 18 to be moved downwardly by the spring 84 to open the ports 68. This relieves the pressure in the chamber 58 and permits the piston 48 to descend to its starting position.

The clutch through which parts of the machine that operate on the shoe are driven or controlled isV shown in Fig. 8, this clutch and the means for controlling it being more fully shown and described in Letters Patent No. 2,059,241. A belt-driven pulley I I2 is mounted to turn normally about a sleeve I4 which is keyed to a shaft ||6 mounted in bearings in, the frame. The pulley is so formed as to serve as one of the coop-erating members of a friction clutch, the other clutch member ||3 being connected to the sleeve i4 to turn therewith, but being so mounted as to permit it to be moved lengthwise of the sleeve. A spring |26 acts, when permitted, to move the member ||8 into clutching engagement with the pulley ||2 to cause the shaft ||6 to be driven by the pulley. When the shaft is thus driven it operates through a worm |22 fast thereon to drive a worm gear |24 fast on a shaft |26 which carries operating cams (not shown). The clutch member ||8 is controlled by a bell-crank lever |28 provided with upwardly extending arms which form a yoke |38 pivotally connected to` a member |82 mounted in a groove in the hub of the clutch member. The bell-crank lever has also a substantially horizontal arm |34 pivotally connected to ablock |36 (see also Fig. 9) mounted in a horizontal guideway provided in a slide |38 which is movable vertically in a guideway in the frame. Vertically movable in the same guideway is another slide |48 provided with a roll |42 controlled by a cam (not shown). The slide |48 carries a plate |44 arranged to engage the uper end of a spring-controlled finger |46 piv-otally mounted on a pin |48 in the slide |38. By engagement of the plate |44 with the finger |46 the slide |38 is normally held in a depressed position such that the clutch member I8 is held by the bell-crank lever |28 out of engagement with the pulley ||2. The clutch is actuated t0 start the machine by swinging the iinger |46 out from under the plate |44, thus releasing the slide |86 and the bell-crank lever |28 to permit the `spring |20 to act. For this purpose there is provided an arm |58 arranged to engage and swing the iinger 46, the arm being pivotally mounted' on one end of a rod |52 connected by a link |54 to a lever |56. The lever |56 has a pin-and-slot connection |58 with a push rod |66 (Fig. 1) which extends to the front of the machine and has -on its front end a rubber pad |62 arranged to be engaged by the hand of the operator, the rod being rearwardly movable against the resistance of a spring |64. It will thus be seen that by rearward movement of the push rod |66 the clutch is actuated to start the cycle of power operations of the machine. In the course of the cycle of operations the slide |40 is raised topermit the nger |46 again to be positioned under the plate |44, after which the slide |46 by downward movement serves to depress the slide |38 and thus to stop the machine at the end of the cycle, as more fully disclosed in Letters Patent No. 2,059,241.

The present invention provides a construction euch that the clutch may, if desired, be Aactuated to start the machine by fluid-pressure means controlled by the same treadle 62 which controls the means for operating the jack, thus relieving the operator of the necessity oi moving the push rod |66 with his hand. For this purpose there is mounted within the casting 36 a smaller casting |66 (Fig. 5) provided with a chamber |68 arranged to communicate with the previously mentioned chamber 54 through the same opening |16 in the casting 36 where the pressure control valve 232 of the construction shown in Letters Patent No. 2,085,755 was located. The casting |66 is provided also with a chamber |12 communicating with the lower end of a cylinder |14 in which is mounted a piston |16, this piston being provided with a projection |18 at its lower end for engagement with the lower wall of the chamber |12 tolimit the downward movement of the piston. At its upper end the piston |16 is in engagement with the lower end of a bar |80 vertically movable in a bracket |82 fast on a cover plate |84 mounted on the casting 36. The bar |80 is connected at its upper end (Fig. l) by a link |86 to an arm |88 fast on a shaft |98 which is mounted to turn in a bracket |82 fast on the frame of the machine. Also fast on the shaft |96 is an arm |94 (Figs. 1 and 9) which carries a roll |96 in engagement with a plate |88 fast on the lever |56. Accordingly upward movement of the piston |16 in the cylinder |14 serves to swing the lever |56 against the resistance of the spring |64 in the direction to actuate the clutch and start the power operation of the machine, the push rod |60 moving idly in response to the movement of the lever Admission of iiuid into the chamber |12 to operate the piston |16 as above described is con- 75 trolled by a valve member 200 movable vertically in a sleeve 202 mounted in an opening in the casting |66. Thissleeve is provided with

ports

203, 204 and 266 arranged to communicate respectively with the chamber |68, the chamber |12 and the reservoir 52. The valve member 200 is so formed as to provide a piston 208 tting closely in the lower end of the sleeve 202, another piston 2||1 arranged to control the ports 204, and still another piston 2 2 fitting in the upper end of the sleeve. A ange 2|4 on the valve member serves by engagement with the upper end of the sleeve 202 to determine the normal position of the member, and when the valve member is in this position the chamber |12 is in communication with the reservoir 52 through the

ports

204 and 266. Upward movement of the valve member to carry its piston 2|0 above the ports 204 opens communication between the chamber |68 and the chamber |12 through the

ports

203 and 204, so that fluid under pressure passing from the chamber 54 to the chamber |68 will also pass to the chamber |12 and raise the piston |16 to start the machine as previously described. When the valve member 200 is thereafter returned to its normal position the fluid is permitted to escape from the chamber |12 into the reservoir 52 as the piston |15 returns to its starting position. It will be understood that the spring |64 controlling the push rod |66 serves, when permitted, to swing the arm |94 in the direction to impart downward movement to the bar |85 and the piston |16. By reference to Fig, 3 it will be seen that the previously mentioned pressure control valve 12 which determines the maximum pressure in the

chambers

56 and 54 is supported on the casting |66 and directly controls the pressure in the chamber |68 which is at all times in communication with the chamber 54, as shown in Fig. 5.

Fast in the upper end of the valve member 26|) is a krod 2|6 which extends upwardly through an opening in one end of an arm 2|8 secured at its other end to a bar 226 (Fig. 4) vertically movable in a guideway in the casting 36. Between this arm and an enlarged head on the upper end of the rod 2|6 is a spring 222 through which the arm acts to raise the valve member 205 when upward movement is imparted to the bar 226. A pin 224 mounted in a plate 226 fast on the casting 36 extends into a slot 228 in the bar 220 to limit upward movement of the bar and thus to determine the limit of upward movement of the valve member 250. The pin also serves to limit downward movement of the bar 220, as illustrated in Fig. ll, such downward movement being imparted to the bar by a spring 230 connected at one end to the pin 224 and at its other end to a pin 232 in the bar. For imparting upward movement to the bar 220 the socket member 96 (Fig. 6) previously referred to as mounted on the treadle-operated link 94 has fast thereon a bracket 234 in which is adjusuably clamped a screw 236 arranged to engage a plunger 238 mounted in the lower end of the bar 226. The bracket 234 is forked to cooperate with flat faces on opposite sides of the plunger 98 in order to prevent turning movement of the socket member 96 in the link 94. The plunger 238 is controlled by a spring 246 in the bar 225 and is provided with a flange 242 arranged to engage a bushing 244 in the bar to determine the normal position of the plunger. The screw 236 is normally spaced far enough below the lower end of the plunger 236 to permit the bar 80 to be moved upwardly to the position determined by the pin 8`8 (Fig. 1)' to cause the jack to be operated by the fluidpressure means before the screw acts on the plunger. Further movement of the treadle 92 required thereafter to raise the bar 220 is yieldingly resisted by the spring |00 in the socket member 96, and accordingly the resistance of this spring serves to indicate to the operator when he has depressed the treadle 92 far enough to cause the shoe to be swung rearwardly and raised by the jack without starting the power operation of the machine. This affords the operator an 0pportunity to inspect the shoe and to make any adjustment thereof which may be desirable before the machine is started, in the same manner as explained in Letters Patent No. 2,085,755.

Under some conditions the operator may find it practicable fully to depress the treadle 92 in the first instance, thus foregoing any opportunity to adjust the shoe after it has been carried rearwardly by the jack and raised against the holddown. In that case it is desirable to delay the action of the starting means sufficiently to insure that the movements imparted to the jack by the huid-pressure means will have been substantially completed before the machine is started. The bar 220 (Fig. 4) is accordingly controlled by a latch 246 fast on a rock shaft 248 mounted in a bearing in the plate 226, this latch being arranged to enter a notch 250 in the bar 220 to hold the bar initially against upward movement. A spring 252 connected to an arm 254 fast on the rock shaft 248 holds the latch normally in the notch 256, as illustrated in Fig. 4. Accordingly, if the operator fully depresses the treadle in the rst instance the plunger 238 is moved upwardly in the bar 22|) and compresses the spring 24U without raising the bar. In order to withdraw the latch 246 thereafter from the notch 250 to permit the bar 220 to be raised by the spring 246 to start the machine, use is made of a bell-crank lever 256 with which the machine is provided for initiating the outward swinging movement of the jack when it is released at the end of the cycle of operations. As disclosed in Letters Patent No. 2,085,755, this bell-crank lever is supported by a bracket on the frame and carries a roll 256 engaged by the upper end of the bar 46 through which the jack is operated by fluid pressure. When this bar, therefore, is raised to operate the jack it swings the bell-crank lever 256 in a clockwise direction (Fig. 4) against the resistance of a spring 266. This spring acts at the end of the cycle to swing the bell-crank lever in the opposite direction and to cause one arm thereof to operate a push rod 262 which acts on the jack. To control the latch 246 there is pivotally mounted on a pin 264 carried by the bellcrank lever a bar 266 provided with a slot 268 and carrying a screw 210 which extends upwardly into this slot. An arm 212 intergral with the latch 246 has a forked end which partially embraces the bar 266 and carries a pin 214 extending through the slot 266. Initially there is sufficient space between the upper end of the screw 216 and the pin 214 to permit the bell-crank lever 256 to receive the greater portion of its swinging movement from the bar 46 without disturbing the latch 246. When the bar 46 has nearly arrived at the limit of its upward movement, and accordingly when the shoe-presenting movement of the jack has been substantially completed, the screw 216 acts on the pin 214 to swing the latch 246 out of the notch 250, thereby releasing the bar 226 to permit the starting of the machine. Insurance is thus aorded that when the machine is started the shoe will have been properly positioned by the jack against the heel band and the holddown.

In order to avoid objectionable noise, mechanism is provided for automatically controlling the valve member 260 in such manner that while the piston |16 is moved far enough to impart the required clutch-releasing movement to the finger |46 (Fig. 9), it does not continue to move until it is stopped by the resistance of the parts which it operates. This mechanism comprises a lever 216 (Figs. 2 and 5) mounted to swing about a pin 218 supported by arms formed on the member |82, one arm of the lever carrying a screw 286 adjustably clamped therein for engagement with the top of the rod 2|6 and the other arm of the lever being formed as a gear sector 262 in engagement with rack teeth 284 formed on one side of the bar |86. It will thus be seen that when the bar |86 is raised by the piston |16 the screw 286 is swung downwardly into engagement with the rod 2|6 and then serves by such engagement to depress the rod against the resistance of the spring 222 and thus to lower the valve 206 so as to close the ports 284 and stop the admission of fluid to the chamber |12. It will be understood that the screw 286 is adjusted to operate the valve 266 in this manner precisely at the time required to prevent excessive movement of the piston |16. When the bar 220 is moved downward by its spring 236 upon release of the treadle 92 the valve member 266 is, of course, returned to its starting position to permit exhaust of the fluid from the chamber |12, the bar |80 then acting in its return to starting position to swing the lever 216 again into the position in which it is shown in Fig. 5.

In the normal use of the machine constructed as thus far described, the operator, after mounting a shoe on the jack, depresses the treadle 62 and thereby moves the bar 80 upwardly to the limit determined by the pin 88, thereby rendering operative the fluid-pressure means which swings the jack rearwardly to carry the shoe against the heel band 2 and raises the post I6 to force the shoe against the holddown I6. In this movement of the treadle the screw 236 is carried upward substantially or nearly into position to engage the plunger 238 but not far enough to raise the plunger. The operator may then adjust the shoe in such manner as may be desirable in order to position it in proper relation to the parts which operate thereon. He then further depresses the treadle against the resistance of the spring |66, thereby raising the bar 220 to operate the valve memberI 266 and thus render the fluid-pressure means eiective to start the power operation of the machine. It will be understood that at this time the latch 246 will have been operated by the bell-crank lever 256 to release the bar 226 and permit its upward movement. If the operatory prefers, he may depress the treadle 92 fully in the rst instance, in which case the plunger 238 is raised and compresses the spring 248 without raising the bar 226, since the latter is still under control of the latch 246. The starting of the machine is accordingly delayed until the fluidoperated bar 46 substantially completes its upward movement to cause the jack to force the shoe against the heel band and the holddown, whereupon the latch 246 is operated by the bellcrank lever 256 to release the bar 226 and permit it to be moved upwardly by the compressed spring 24|] to cause the starting of the machine- After the starting of the machine the operator releases the treadle 62 to permit the bar 46 and the bar 226 to be returned to their initial positions. It will be understood that the latch 246 is returned to its normal position in the notch 256 when the bell-crank lever 256 is moved reversely by the spring 268 at the end of the cycle of operations.

In Figs. l1, l2 and 13 is shown an alternative construction in which the treadle 92 is positively connected by the link 96, through a pivot pin 286, to the lower end of the bar 86 controlling the huid-pressure means which operates the jack. The bar 226 controlling the fluid-pressure means for starting the machine is connected by a pivot pin 288 to a link 296 which is connected at its lower end to an arm 262 mounted to swing about the rod 3ft on which the treadle 62 swings. Also mounted 'to swing about the rod 34 and connected to the arm 282 by a web 263 is an arm |94 which extends forwardly near the treadle 62 and on the front end of which is secured a bracket 296. On its iront end the treadle 92 is provided with a plate 298 engaged by the operators foot and mounted to turn about a pin 366, the plate being controlled by a spring 362 which holds it normally in a position determined by its engagement with a stop face 366 on the treadle. Formed on the plate 28S is a lug 366 extending downwardly toward the bracket 266. When the treadle 62 is depressed this lug is carried to a position close to the bracket 266. When it is desired to start the machine, after the jack has been operated by the fluid-pressure means, the operator tips the plate 296 about the pin 366 by his foot, thereby swinging the arm 266 downwardly through engagement of the lug 366 on the plate with the bracket 296 on the arm. In this manner upward swinging movement is imparted to the arm 262 to raise the bar 226 and thus cause the iluid-pressure means to actuate the clutch and start the machine. It will be understood that the operator may, if he chooses, tip the plate 298 immediately after depressing the treadle, in which case premature starting of the machine will be prevented by the latch 226 in the manner hereinbefore explained.

If the operator should desire at any time to start the machine by use of the push rod |60, he may do so in the same manner as heretofore. This may be done, for example, in order to operate the machine for trial purposes while the jack remains in its initial position. The machine may be started in this manner, moreover, after the jack has been operated by the huid-pressure means, if for any reason it should be desired to do so.

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

1. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations and for then maintaining it in shoe-presenting position to permit the operator to inspect the shoe prior to any operation of the machine thereon, a controlling member movable by the operator to cause said additional power means thus to act on the shoe support, and means for starting the cycle of operations of the machine upon further movement of said controlling member.

2. In a shoe machine, the combination with end-lasting wipers arranged to operate on a shoe in a cycle of automatic operations of the machine, and a clutch arranged to be actuated to start the cycle of operations, of a shoe support movable to present a shoe to said wipers, iluidpressure means for thus moving said shoe support and for then maintaining it in shoe-presenting position to permit the operator to inspect the shoe prior to the operation of the wipers thereon, a controlling member movable by the operator to cause said fluid-pressure means thus to act on the shoe support, and means for actuating said clutch to start the cycle of operations upon further movement of said controlling member.

3. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations, a controlling member movable by the operator to cause said additional power means thus to act on the shoe support, and power means for starting the cycle of operations of the machine also in response to movement of said controlling member.

4. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, and avclutch arranged to be actuated to start the cycle of operations, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations, a controlling member movable by the operator to cause said additional power means thus to act on the shoe support, means for actuating said clutch to start the cycle of operations of the machine upon further movement of said controlling member, and spring means arranged to become effective to resist the movement of said controlling member after said additional power means has been rendered operative by the movement of said member but prior to the actuation of the clutch.

5. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, and mechanism for starting the cycle of operations, of a shoe support movable to present a shoe to said power-driven means, power means under control of the operator for thus moving said shoe support prior to the starting of the cycle of operations, and power means also under control of the operator for operating said starting mechanism.

6. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, and mechanism for starting the cycle of operations, of a shoe support movable to present a shoe to said power-driven means, yand iluid-pressure means for thus moving said shoe support and for also operating said starting mechanism.

7. In a shoe machine, the combination with power-driven means for operating on a shoev in a cycle of automatic operations of the machine, and mechanism for starting the cycle of operations, of a shoe support movable to present a shoe to said power-driven means, and fluid-pressure means under control of the operator for thus moving the shoe support and for also operating said starting mechanism only when the shoe support has substantially completed its movement.

8. In a shoe machine, the combination with power-driven means for operating on a shoe, and a clutch through which said power-driven means is operated, of a shoe support movable to present a shoe to said power-driven means, fluidpressure means for thus moving said shoe support and for also actuating said clutch to start the power-driven means in operation, and a controlling member movable rst to cause the shoe support to be thus operated and thereafter further movable to cause the actuation of the clutch.

9. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable independently of each other in response to pressure of uid thereon and arranged respectively to impart the shoe-presenting movement to the shoe support and to operate said starting mechanism, and controlling means for rendering said devices operative in succession to cause rst the movement of the shoe support and then the starting of the power-driven means only after the shoe support has substantially completed its movement.

10. lIn a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable independently of each other in response to pressure of uid thereon and arranged respectively to impart the shoe-presenting movement tothe shoe support and to operate said starting mechanism, and a member movable by the operator and common to both said devices for rendering the fluid effective thereon.

11. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, a device movable in response to pressure of uid thereon to impart the shoe-presenting movement to the shoe support, another device movable in response to pressure of fluid thereon to operate said starting mechanism, and ya member movable by the operator to render the fluid effective on said first-named device and further movable thereafter to render the fluid effective on the other device.

12. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, a device movable in response to pressure of fluid thereon to impart the shoe-presenting movement to the shoe support, another device movable in response to pressure of fluid thereon to operate said starting mechanism, valve members associated respectively with said diiferent devices and movable to render the uid eifective thereon, and a treadle movable by the operator to operate the valve member associated with said first-named device and further movable thereafter to operate the other valve member.

13. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a Shoe to said power-driven means, devices movable in response to pressure of fluid thereon and arranged respectively to impart the shoepresenting movement to the shoe support and to operate said starting mechanism, and means for preventing the .operation of the starting mechanism by the device which acts thereon until the movement of the shoe support by the other device has been substantially completed.

14. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, a device movable in response to pressure of fluid thereon to impart the shoe-presenting movement to the shoe support, another device movable in response to pressure of fluid thereon to operate said starting mechanism, valve members associated respectively with said different devices and movable to render the iluid effective thereon, and mechanism controlled by the device which operates on the shoe support for preventing operation of the valve member associated with the other device until the movement of the shoe support has been substantially completed.

15. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, a device movable in response to pressure of fluid thereon to impart the shoe-presenting movement to the shoe support, another device movable in response to pressure of fluid thereon to operate said starting mechanism, valve members associated respectively with said different devices and movable to render the fluid effective thereon, a latch for normally preventing movement of the valve member associated with the device which acts on the starting mechanism, and mechanism for rendering said latch inoperative by the movement of the device which acts on the shoe support.

16. In a shoe machine, the combination with po-wer-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations, a controlling member movable by the operator in successive steps with a pause between said steps rst to cause said additional power means thus to act on the shoe support vand thereafter to cause the machine to start its cycle of operations, said member being fully movable alternatively in one step, and means for automatically delaying the starting of the cycle of operations until the movement of the shoe support has been substantially completed if said member thus receives its full movement.

17. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power--driven means, devices movable in response to pressure of fluid thereon and arranged respectively to impart the shoe-presenting movement to the shoe support and to operate said starting mechanism, a member movable by the operator in successive steps with a pause between said steps to render the iiuid effective rst on the device which acts on the shoe support and thereafter on the device which acts on the starting mechanism, said member being fully movable alternately in one step, and means for automatically delaying the operation of the starting mechanism if the memberv thus receives its full movement.

18. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable in response to pressure of fluid thereon and arranged respectively to impart the shoepresenting movement to the shoe support and to operate said starting mechanism, a member movable by the operator in successive steps with a pause between said steps to render the fluid effective rst on the device which acts on the shoe support and thereafter on the device which acts on the starting mechanism, said member being fully movable alternatively in one step, and mechanism controlled by the device which acts on the shoe support for preventing the uid from acting on the other device until the movement of the shoe support has been substantially completed if said member thus receives its full movement.

19. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable in response to pressure of uid thereon and arranged respectively tov impart the shoe-presenting movement to the shoe support and to operate said starting mechanism, valve members associated respectively with said different devices and movable to render the fluid effective thereon, a controlling member movable by the operator thus to operate the valve member associated with the device which acts on the shoe support, a spring arranged to be sub- ,iected to stress by the movement of said controlling member for thereafter operating the other valve member, and means for preventing said other valve member from being operated by said spring until the movement of the shoe support has been substantially completed.

2G. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable in response to pressure of iluid thereon and arranged respectively to impart the shoepresenting movement to the shoe support and tooperate said starting mechanism, valve members associated respectively with said diierent devices and movable to render the fluid effective thereon, a controlling member movable by the operator thus to operate the valve member associated with the device which acts on the shoe support, a spring arranged to be subjected to stress by the movement of said controlling member for thereafter operating the other valve member, a latch for temporarily preventing said other valve member from being operated by said spring, and means for rendering said latch inoperative by the movement of the device which acts on the shoe sup-port.

2l. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations, a device movable by the operator to cause said additional power means thus to act on the shoe support, a portion of said device being thereafter movable While other portions thereoiC are stationary, and means controlled by such movement of said movable portion of the device for starting the cycle of operations of the machine.

22. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional power means for thus moving said shoe support prior to the starting of the cycle of operations, a treadle depressible by the operator to cause said additional' power means thus to act on the shoe support, said treadle including a member mounted for movement relatively to other portions thereof after the treadle has thus been depressed, and means controlled by such movement of said member for starting the cycle of operations of the machine.

23. In a shoe machine, the combination with power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, additional povver means for thus moving said shoe support prior to the starting of the cycle of operations, a treadle depressible by the operator to cause said additional power means thus to act on the shoe support, said treadle including a member mounted for tipping movement relatively to other portions thereof by the action of the operators foot thereon, and means arranged to be controlled by said member when it is thus tipped for starting the cycle of operations of the machine.

24. In a shoe machine, the combination With power-driven means for operating on a shoe in a cycle of automatic operations of the machine, of a shoe support movable to present a shoe to said power-driven means, uid-pressure means for thus moving said shoe support prior to the starting of the cycle of operations, a device movable by the operator to cause said huid-pressure means thus to act on the shoe support, a portion` of said device being thereafter movable while other portions thereof are stationary, and additional Huid-pressure means controlled by such movement of said movable portion of the device for starting the cycle of operations of the machine.

25. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable in response to pressure of fluid thereon and arranged respectively to impart the shoepresenting movement to the shoe support and to operate said starting mechanism, a treadle depressible by the operator to render the uid effective on the device which acts on the shoe support, said treadle including a member mounted for movement relatively to other portions thereof after the treadle has thus been depressed, and means arranged to be operated by such movement of said member for rendering the fluid effective on the device which operates the starting mechanism.

26. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a shoe support movable to present a shoe to said power-driven means, devices movable in response to pressure of fluid thereon and arranged respectively to impart the shoepresenting movement to the shoe support and to operate said starting mechanism, a treadle depressible by the operator to render the uid effective on the device which acts on the shoe support, said treadle including a member mounted for tipping movement relatively to other portions thereof by the action of the operators foot thereon, an arm arranged to be depressed by said member when thus tipped, and means arranged to be operated by the depression of said arm for rendering the uid effective on the device which operates the starting mechanism.

27. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a device movable in response to pressure of fluid thereon to operate said starting mechanism, a valve member movable to render the fluid effective on said device, and mechanism arranged to be operated by the movement of said device to limit said mov-ement automatically through control of said valve member.

28. In a shoe machine, the combination with power-driven means for operating on a shoe, and mechanism for starting said power-driven means in operation, of a device movable in response to pressure of fluid thereon to operate said starting mechanism, a valve member movable to render the fiuid effective on said device, a spring through which such movement is imparted to the valve member, and mechanism arranged to be operated by the movement of said device to impart reverse movement to the valve member against the resistance of said spring and thereby limit the movement of the device.

JACOB C. J ORGENSEN.

CERTIFICATE OF CORRECTION. Y

`Pat-ent NQ. ,llgl. Janary 17, 1959.

JACOB C JOBGENSEN.

It is hereby certified that error appears in the pririlted specification of the above numbered patent requiring correction as follows: Page 5, second column, line V19, for the reference numeralv "19h" read 29h; page T, second column, line l, claim l?, for "alternately" read. alternatively; and that `the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th. day of June, A; D. 195% Henry Van Arsdale (Seal) Acting' Commissioner of Patents.