US2244067A

US2244067A - Machine for shaping uppers over lasts

Info

Publication number: US2244067A
Application number: US331300A
Authority: US
Inventors: Jorgensen Bernhardt
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1940-04-24
Filing date: 1940-04-24
Publication date: 1941-06-03
Anticipated expiration: 1958-06-03

Description

June 3, 1941. B' JQRGENSEN 2,244,067

MACHINE FOR SHAPINGUPPERS ovna LASTS r Filed April 24. 1940 s Sheets-Sheet 1 June 3, 1941., a, JORGENSEN mcanw FOR sxmmo warms OVER LASTS Filed April 24, 1940 s Sheets-Shut 2' 5 Sheets-Sheet 3 Filed April 24, 1940 June 3, 1941. B. JORGENSEN 2,244,067

MACHINE FOR SHAPING 'ufiERs OVER LASTS Filed April 24, 1940 5 Sheets-Sheet 4 AWE/v70? June 3-, 1941. -B. IORGENSEN 6 MACHINE FOR SHAPING UPPERS OVER LASTS Filed April 24, 1940 5 Sheets-Sheet 5 Fig? 304 93 I98 /96 1 95 {78 17a F 0 o 9 45 190 o V 362 68 Q} 18 502, q) 5 364 b vfiag CTIZIIZZ:

Patented June .3, 1941 MACHINE FOR SHAPING UPPERS OVER LAS'I'S Bernhardt Jorgensen, Marblehead, Mass., assignor to United Shoe Machinery Corporation,

Borough of Flemingto New Jersey 11, J., a corporation of Application April 24, 1940. Serial No. 331,300

- 26 Claims. (61.12-7) This invention relates to machines for shaping uppers over lasts, and is herein illustrated as embodied in a lasting machine of the same general character as disclosed in United States Letters Patent No, 2,181,896, granted on December 5, 1939 on an application of mine. It is to be understood, however, that in various aspects the invention is not thus limited in its applicability.

The power-operated machine shown in the above-mentioned Letters Patent is provided with toe-lasting mechanism and with opposite sidelasting mechanisms, the latter acting at the ball portion of the shoe and cooperating with the toe-lasting mechanism to last the entire forepart of the shoe. The toe-lasting mechanism includes a toe clamp or gripper which is closed on the margin of the upper by a treadle prior to the starting of the power operation of the machine, and the side-lasting mechanisms include other grippers which are closed on the upper by a second depression of the same treadle after the operator has positioned the margin of the upper in proper relation to them. In the power operation of the machine the several grippers pull the upper in response to heightwise movement of the last, and thereafter the margin of the upper is wiped inwardly over an insole on the last, first at the sides of the ball portion and then around the toe portion of the shoe.

For purposes of the present invention the construction herein shown is such that the jaws of the grippers of the side-lasting mechanisms are closed on the margin of the upper by fluidoperated means controlled by the usual clutchactuating member by means of which the operator starts the power operation of the machine.

The operator is thus afiorded the same opportunity as heretofore to arrange the margin of the upper in proper relation to the side-gripper jaws after closing the toe gripper on the upper, but is relieved of the necessity of closing those jaws, this being incidental to the starting of the machine. In addition to the saving of time and effort thus involved, the use of fluid-operated upper-gripping means is advantageous for the reason that regardless of their thickness the upper materials are gripped with a diflnitely predetermined pressure which can be readily varied by varying the pressure or the operating fluid. In the construction shown the operating fluid is delivered to the fluid-operated upper-gripping means by a continuously operated pump which is conveniently in constant communication with the upper-gripping means but is rendered eistantially atmospheric pressure, this valve being closed by the movement of the above-mentioned clutch-actuating member. While these features of the invention, and also certain novel features of gripper construction including fluid-operated jaw-closing means, are herein illustrated as applied to means for pulling the upper at the opposite sides of the last in a machine organization of the character above outlined, it is to be understood that in various novel aspects the invention is more generally applicable to machines of difierent kinds which have means for gripping and pulling upper materials.

As a further feature, the invention provides novel means for pulling portions of the sides of an upper extending heelwardly of the ball line in such manner that the upper is subjected to strain not only heightwise of the last, but also lengthwise of the last toward its heel end, as is desirable for the proper shaping of the upper in those locations. In the machine herein shown the construction is such that the pulling of the upper heightwise of the last by the grippers of the previously mentioned opposite side-lasting mechanisms is effected in response to heightwise movement of the last in a direction which is substantially perpendicular to the bottom of the forepart of the last, and a pull toward the heel endoi the last is effected by moving these grippers lengthwise of the last. As illustrated, such movement of the grippers results from movement of the work support with the last in the direction heightwise oi the last.

The above and other features of the invention, including novel means for controlling the opposite side margins of the insole in the vicinity of the side-lasting mechanisms, 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 in front elevation of the upper portion of a machine in which the invention is embodied;

Fig. 2 is a plan view of a portion of the structure, with parts in section on the line 11-11 of Fig. 1;

Fig. 3 is a plan view of the forepart-lasting means;

Fig. 4 shows a portion of the machine in elenisms partly in elevation, as viewed from the right, and partly in section;

Fig. 8 is a view similar to Fig. 7 showing both of the side-lasting mechanisms with the parts in the positions which they assume in pulling the upper;

Fig.9 is a plan view of the insole holddown and parts associated therewith, illustrating the relation of the holddown to the insole; and

Fig. 10 shows a portion of the insole holddown in front elevation, further illustrating its relation to the insole.

As in prior machines of the illustrated type, the shoe and last are positioned on a toe rest 2 which is movable downwardly with them against the resistance of a spring 4 (Fig. 8), and one. heel-end support 6 also movable downwardly with them against the resistance of a spring 8 along guideways l (Fig. 2) in the frame l2. The support 6 carries a pin l4 arranged to enter the spindle hole in the heel end of the last, the pin being mounted on a holder l6 vertically adjustable relatively to the support 6. For a reason hereinafter explained the construction shown is such that the pin I4 is inclined in a direction lengthwise of the shoe, instead of being vertical as heretofore. As fully disclosed in Letters Patent No. 2,181,896, the shoe is clamped about its heel end by a heel band [8 carried by the vertically movable support 6, this heel band being moved lengthwise of the shoe into clamping relation thereto prior to the starting of the power operation of the machine by spring-operated mechanism which is released in response to movement of a plunger 20 (Fig. 4).

For lasting the toe end of the shoe the machine is provided with mechanism substantially like wipers 24 (Fig. 3) for wiping the margin of the upper around the toe inwardly over the insole, these wipers being of such lengths as to overlap also substantial portions of the bottom of the shoe extending heelwardly of its toe portion. The band and the wipers are supported by a casting 26 (Fig. 1) which in the construction herein shown, while adjustable lengthwise'of the shoe as heretofore, is not adjustable as heretofore about an axis extending widthwise of the shoe, but on the contrary positions the wipers 24 permanently in a horizontal plane. This eliminates any necessity for tipping the side-lasting mechanisms (hereinafter described) to maintain them, in proper relation to the toe wipers and thus contributes to a'better design of the operating mechanism than in the earlier construction. In order to position the bottom of the forepart of the shoe in proper relation to the horizontal toe wipers, the last pin i4 is necessarily positioned somewhat lower than heretofore relatively to the support 6 and is inclined in the manner above described. The toe wipers are advanced lengthwise of the shOe and are closed laterally of the shoe by mechanism operated by a rockshaft 28 (Fig. 3) which is operated by a cam (not shown) mounted on a cam shaft 30 (Fig. 4). The wipers are maintained in a heated condition by an electrical heating unit 32 (Fig. 3) mounted in a cover plate 34 on the casting 26.

Included also in the toe-lasting mechanism is means substantially like that shown in Letters Patent No. 2,181,896 for gripping the margin of the toe end of the upper prior to the starting of the power operation of the machine, so that in response to the \downward movement of the last a pull heightwise of the last is applied'to the upper as it is wiped upwardly by the toe band 22. This upper-gripping means comprises a pair of jaws 36 and 38 (Fig. 3), the jaw 36 being movable downwardly toward the jaw 38 to grip the upper by mechanism operated by the swinging of a lever 40 (Fig. 1) which is operated through a flexible cable 42 by a treadle (not shown). A latch 44 carried by the lever 40 is arranged to swing over a lug 46 to lock the jaw 36 in upper-gripping position, the lug 46 being mounted to turn with the wiper-operating rockshaft 28 so that the lever 40 is released to permit the release of the upper by the gripper substantially at the time when the toe wipers begin to wipe the margin of the upper over the insole.

Downward 'movement of the shoe is effected in the power operation of the machine by a toe presser foot 48 and a heel presser foot 50 arranged, respectively, to engage the toe and heel ends of the insole. The toe presser foot is supported by an arm 52 carried by vertically

alined rods

54 and 56 which are mounted for vertical movements and for turning movements in bearings in the frame. The arm 52 occupies initially a position in which the toe presser foot 48 is retracted rearwardly from over the shoe bottom, and the operator swings the arm forwardly to carry the presser foot into position over the shoe by means of a handle 58. Such forward swinging movement of the arm 52 serves to start the power operation of the machine. For this purpose, as more fully disclosed in Letters Patent No. 1,843,232, granted on February 2, 1932 on an application of mine, there is provided a rod 60 (Fig. 5) which is moved lengthwise in a rearward direction by the turning of the rod 56 and serves by that movement to swing a bell-crank lever 62 and thus to lift a. -link 64 connected to this lever. The link 64 is provided on its lower end with a hook 66 which in response to the upward movement of the link acts on a clutch-tripping arm 68 to trip or release a clutch 10 through which the cam shaft 30 is operated. Immediately after the starting of the power operation of the machine the toe press-3r foot 48 is carried downwardly into engagement with the insole and is further operated to depress the toe end of the shoe, the heel presser foot 50 being operated simultaneously to depress the heel end of the shoe, Substantially as disclosed in Letters Patent No. 2,181,896, the heel presser foot is vertically adjustable in a carrier 12 which is fast on a rod 14 mounted for vertical movements and for turning movements in the frame, the carrier being swung by the turning of the rod to carry the presser foot 50 into position over the heel end of the shoe and being i moved downwardly by the rod to cause the presser foot to depress the shoe.

The machine is further provided with a pair of opposite side-lasting mechanisms, designated generally by the reference characters 16 (Fig. 3),

the machine.

for pulling the upper and for wiping its margin inwardly over the insole at the sides of the forepart heelwardly of the toe portion of the'shoe, so that the entire forepart of the shoe is lasted by the machine. These mechanisms are in many respects similar to corresponding mechanisms shown in Letters Patent No. 2,181,896, but differ therefrom in other respects. In the construction herein shown the two side-lasting mecha-- nisms are supported by a casting I8 (Figs. 1 and 4) common to both of them, this casting having at its lower end a front pair and a rear pair of

hub portions

88, 82 fast on rods 84 which are movable lengthwise of the shoe in bearings in e frame of the machine for a purpose hereinaf r lasting mechanisms will be moved toward and from the shoe in unison. At its lower end the link I22 is pivotally connected to the front end of a lever I84 the rear end of which is fast on a rockshaft I88 supported in bearings in the frame. In the construction shown the side-lasting mechanisms are moved inwardly toward the shoe by springs I88 connected to the casting I8 and to the arms II2 of the bell-crank levers II4'. Initially, however, they are held in retracted positions by a retaining lever I48 arranged to underlie the front end of the lever I34, as illustrated in Fig. 4. The lever I48 is swung to release the explained, the

hub portions

88 and 82 of ea h pair being spaced from each other along the corresponding rod 84. Each side-lasting mechanism comprises a gripper designated generally by the reference character 88 for gripping and pulling the upper and a wiper 88 for wiping the margin of the upper inwardly over the insole, these parts being supported as hereinafter described on a carrier 98 which is movable toward and from the shoe along guideways 82 (Figs. 1 and 7) formed in opposite sides of a holder 84. In the construction shown each holder 94 has a depending stem 96 mounted in a split bearing in the casting I8, so that the side-lasting mechanisms may be adjusted independently of each other about axes extending heightwise of the shoe. After any such adjustment either mechanism is secured in adjusted position by a screw 88 acting on the split bearing. Each holder 88 and its guideways 92 are curved about an axis extending heightwise of the shoe, so that in its movement inwardly toward the shoe each sidelasting mechanism has a component of movement lengthwise of the shoe toward the toe end of the latter.

Initially the two carriers 88 are retracted as illustrated in Fig. 3 to provide ample room for the mounting of the shoe and last on the toe rest 2 and the heel pin I4, and they are moved inwardly to positions determined by the shoe, prior to the starting of the power operation of Such inward movement of each carrier is limited by engagement of the shoe with a clamp member or bumper I 88 (Fig. 8) mounted on a plate I82 secured to the carrier 98. The bumper may turn about a pin I88 onthe plate to adjust itself to the shoe. Each carrier 98 is moved inwardly toward the shoe by a lever I84 lever I34 and thus to permit the springs I38 to move the side-lasting mechanisms toward the shoe by movement of the plunger 28 hereinabove referred to as means for releasing the heel band I 8 to cause it to be moved into clamping relation to the shoe. The construction is such that the lever I84 is released, as heretofore, only in response to further movement of the plunger 28 after the release of the heel band. For this purpose, as disclosed in Letters Patent No. 2,181,896,

'a rod I42 operated by the plunger is spaced initially from the lever I48 and acts thereon only after the release of the heel band. The movement of. the lever I48 by the plunger is effected (Fig. 4) pivotally mounted between its upper and lower ends on a pin I88 fast in the casting I8, the upper end of the lever being connected, to the carrier by a link I88, as more particularly hereinafter described. In the construction herein shown the lower end of each lever I84 is connected by a link I I8 to one arm II2 of a bellcrank lever II4 mounted to turn about one of the rods 84 between the spaced hub portions 88,- 82 of the casting I8. The other arms N8 of the bell-crank levers II4 are pivotally connected to the outer ends of toggle links 'I I8 the inner ends of which are pivotally connected together by a rod I28 on which is mounted a depending link I22. Thislink comprises arms I24 and I25 (Figs.

' the slides.

against the resistance of a spring I44 which is connected to the lower end of the lever and holds it initially in a position determined by its engagement with a stop screw I 46.

Each wiper 88, substantially as disclosed in the last-mentioned Letters Patent, consists of a resilient plate carried by a slide I48 (Figs. '4 and '7) curved similarly to the carrier 88 and mounted in correspondingly curved guideways I58 in the carrier to move relatively to the carrier widthwise of the shoe in a path curved similarly to the path of movement of the carrier, so that the wiper will, have a component of movement lengthwise of the shoe toward its toe end as it is moved inwardly over the insole. The resilient wiper 88 may be sprung heightwise of the shoe as in the earlier construction by screws I52, one of which is shown in Fig. 7, to conform better to the contour of the shoe bottom. In the construction herein shown the wiper is not mounted directly on the slide I48, but on a plate I54 detachably secured by a pin I55 to the slide and in which have ball-shaped outer ends engaging the levers and are pivotally mounted on pins I58 on When the levers I84, however, are operated by the springs I38 in the manner hereinbefore described. upon the release of the lever I34, the slides I48 are prevented from moving relatively to the carriers 88 by springs I58 connected to pins I82 on the carriers and to the pins I56 on the slides, these springs normally holding the slides in positions determined by engagement of shoulders I64 on the plates I54 (Fig. 4) with the inner end faces of the carriers. Accordingly, the carriers 88 and the parts thereon are moved inwardly toward the shoe by the levers I84 to positions determined by engagement of the bumpers I88 with the shoe. At the proper time in the cycle of operations of the machine further movements of the levers I 84 serve to move the slides I48 relatively to the carriers 88 against the resistance of the springs I58 tocause the wipers 88 to wipe the margin of the upper inwardly over the insole.- The levers I84 are operated for this purpose by further downward swinging movement of the lever I34 which is effected by a path cam I68 (Fig. 4) formed in a cam wheel I68 fast on the shaft 30, substantially as disclosed in Letters Patent No. 2,181,896. This cam engages a roll I10 mounted on a lever I12 which is connected to the lever I34 by a link I14. The path cam I66 is enlarged at I16 to permit such downward movement of the lever I12 as occurs when the lever I34 is released by the movement of the plunger 20.

In accordance with the present invention, the construction is such that the Jaws of the grippers 86, instead of being closed on the upper by an additional movement of the same treadle which operates the toe-gripper jaw 36 as in the earlier construction, are closed and held closed by fluid-pressure means. Each gripper includes a cylinder I18 pivotally mounted on a horizontal pin I80 supported in ears I82 extending upwardly from the carrier 90. Fast on the cylinder is a bracket I84 (Fig. '7), and detachably secured in fixed relation to this bracket by a pin I86 is a jaw I88 against which the upper is gripped by another jaw I90 pivotally mounted on the pin I86. slidingly mounted in the cylinder I18 is a piston I92, and pivotally connected to this piston is one end of a rod I94 which extends through a forked upwardly extending portion I96 of the bracket I84 and is pivotally connected at its other end to the jaw I90. A spring I98 mounted between the piston and the forked portion I96 of the bracket 'tends to move the piston in the direction to swing the jaw I90 away from the jaw I88. The piston is moved in the opposite direction to close the jaw I90 on the upper by pressure of fluid admitted to the cylinder I18. Formed in a head 2,00 fast on the cylinder is a passage 202 leading into the cylinder from a flexible tube 204 which is coupled to the cylinder head. As shown in Fig. 4, one of the tubes 204 is connected directly at its lower end to a T-shaped coupling 206, and the other tube is connected to a pipe 208 leading into this T-shaped coupling. Leading from the coupling 206, and communicating, therefore, with both tubes 204, is a flexible tube 2I0 connected at its lower end to a source of fluid supply. This source of fluid supply (Fig. comprises a rotary pump 2I2 driven continuously through a belt 2I4 by the power shaft 2I6 of the machine, the pump being mounted within a reservoir or tank 2I8 which contains a body of liquid 220, preferably oil, under atmospheric pressure. Oil is admitted to the pump through a pipe 222 and is delivered.

by the pump to a coupling 224 one end of which communicates through piping 226 with the lower end of the flexible tube 2I0. The coupling 224 also communicates through piping 228 (Fig. 6) with a rotary valve 230 through which, when open, the oil is permitted to flow from the pump to a pipe 232 leading back to the tank 2 I8. When the valve 230 is open, therefore, the pump merely circulates oil in the tank at substantially atmospheric pressure. The coupling 224 also communicates with a passageway 234 controlled by a valve 236. A spring 238 tends to force the valve 236 against its seat and thus to close the passageway 234, the amount of compression of this spring being adjustable by a screw 240. A pipe 242 leads from the valve 236 back to the tank 2I8. When the valve 230 is open as above described, the valve 236 is held by the spring in closed position. If the valve 230 is closed, however, the valve 236 is opened by the pressure of the oil against it to permit return of the oilto the tank through the pipe 242, the amount of pressure maintained at this time being determined by the force of the spring 238 and being sufficient to operate the pistons I92 and close the Jaws of the grippers 86 on the upper with the force necessary to hold the upper as the pull is applied thereto.

It will thus be seen that the gripping of the upper by the grippers 86 results from the closing of the valve 230. Thevalve is closed by a lever 244 extending therefrom and connected to mechanism which is operated by the forward swinging movement of the toe presser-foot arm 52 (Fig. 1), so that the closing of the grlppers 66 as well as the tripping of the clutch 10 results from the movement of this arm without any special attention on the part of the operator. As already described, the swinging of the arm 52 imparts lengthwise rearward movement to the rod (Fig. 5) which operates the bell-crank lever 62 to lift the clutch-tripping link 64. The bellcrank lever 62 is fast on a rockshaft 248 mounted in a bracket 248 on the rear of the frame of the machine, and fastened also to this rockshaft by a key 250 is an arm 252 having a forked portion through which extends a bar 254. A plate 256 fast on the arm 252 is arranged to bear up wardly against a shoulder 258 on the bar 254, so that upward movement is imparted to the bar by the swinging of the arm 252 as the bellcrank lever 62 is operated to trip the clutch. Extending downwardly from the bar 254 is a rod 260 the lower end portion of which-is slidingly mounted in a yoke member 262 and has fast thereon a collar 264 between which and a shoulder on the yoke member is a spring 266. The yoke member 262 is pivotally connected at its lower end to the lever 244 on the valve 230. Accordingly, the above-described upward movement of the bar 254 serves to swing the lever 244 upwardly and thus to close the valve 230. The yoke member 262 extends downwardly through anopening in a cover plate 268 on the tank 2I8, and the upward swlnging movement of the lever 244 is limited by its engagement with a shoulder 210 on the cover plate in this opening. It will be understood that any further upward movement of the bar 254 thereafter serves merely to compress the spring 266.

The grippers 86 are caused to open and release the upper in response to opening of the valve 230 substantially at the time when the wipers 88 begin to wipe the margin of the upper inwardly over the insole. The valve is thus opened by the action of a spring 212 on the bar 254 when the bar is pushed rearwardly, i. e., toward the lefI as viewed in Fig. 5, to disengage its shoulder 258 from the plate 256, the opening movemenI of the valve being limited by engagement of a screw 214 carried by the yoke member 262 with the cover plate 268. For thus pushing the bar rearwardly there is pivotally mounted on a stud 216 on the arm 252 a lever 218 which carries a pivoted finger 280 held by a spring 282 yieldingly in engagement with the top of the forked portion of the arm 252. Threaded in a pin 284 which is mounted to turn in a forked portion. of the lever 218 is a rod 286 slidingly mounted at its lower end in a yoke member 288 pivotally connected to a lever 290 fast on the previously mentioned rock shaft I36 on which the lever I34 (Fig. 4) is mounted. Fast on the rod 286 in an opening in the yoke member 288 is a. collar 292 between the lower end of which and a shoulder on the yoke member is a compression spring 294. It

will thus be seen that when the yoke member' the lever 218 in thedirection to cause the finger 288 to disengage the bar 254 from the plate 258. The lever 29!! is thus operated by the lever I34 when the latter is moved by the .cam l88.to force the wipers 88 inwardly over the shoe bottom. The finger 288 is spaced far enough initially from the bar 258 to prevent it from acting on the bar in response to that downward movement of the lever I38 which occurs upon its release by the lever M8 prior to the starting of the machine. The position of the finger relatively to the bar may be varied by turning the rod 288 by means of a head 298 on its upper end.

When the pull is applied to the upper by the grippers 88 in response to the downward movement of the last, the grippers may swing about the pins I88 in response to the force of the pull of the upper thereon against the resistance of springs 298. These springs surround rods 888 which are fast in the carriers 88 and extend upwardly through forked extensions 802 of the cylinder heads 288. The springs hear at their lower ends on these forked extensions and at their upper ends on nuts 384 threaded on the rods, lock nuts 308 being provided to hold the nuts 388 in adjusted positions.

The best results in the lasting of the shoe require that the upper extending heelwardly of the ball line be pulled somewhat in a heelward direction as it is pulled heightwise of the last. Accordingly, since the machine herein shown is so constructed that the bottom of the forepart of the shoe is substantially horizontal instead of being inclined downwardly toward the end of the toe as heretofore, the machine is provided with means for imparting to the side-lasting mechanisms including the grippers 88 bodily movement in a heelward direction in the course of the downward movement'of the last. As previously explained, the casting 18 on which the side-lasting mechanisms are mounted is fast on a pair of rods 84 which are movable lengthwise of the shoe in hearings in. the frame. One of these rods has fastened to its right-hand end a block 388 (Fig. 2) connected by a link 3H1 to one arm 3| 2 (Fig. l) of a bell-crank lever 3l4 mounted for swinging movement on the frame, and connected to the other arm 3l6 of this bell-cranklever is a spring 3l8 which tends to swing the lever in a counterclockwise direction and thus to move the casting l8 and the side-lasting mechanisms toward the toe end of the shoe. Initially the casting is held by the spring in a position determined as hereinafter described. The casting l8 and the side-lasting mechanisms are moved toward the heel end of the shoe against the resistance of the spring 3| 8 in response. to the downward movement of the heel-end support 6. Mounted to swing about a rod 322 carried by the heel-end support is a bell-crank lever 324 having a forked upwardly extending arm 328 which carries a trunnion block 328, and threaded in this trunnion block is a rod 338 which is rotatable in a bearing formed in a bracket 332. Rotatable in a bearing in the block 308 and also in the bracket 332 is a rod 334 connected by beveled gears 338 to the rod 338. The bracket 332 is thus supported on the rod 334, and mounted also on this rod is one end of the previously mentioned link 310. The bell-crank lever 324 has a. second arm 338 which, as shown in Fig. 1, is positioned over a shoulder 348 on the frame I2. Accorddowinwardlywith the shoe the shoulder 848 acts" on the arm 338 to swing the bell-crank lever 824 in a clockwise direction and thus through the

rods

338 and 334 to move the rods 84 and the casting 18 toward the heelend of the bell-crank lever 824 and is arranged to abut at one end against a web 348 on the heel-end support 8. Fast on the rod 834 is a hand wheel 348, and by turning this hand wheel the rod 330 may be turned relatively. to the threaded trunnion block 328 to adjust the rods 84 and the casting l8 lengthwise of the shoe. The amount of upper-pulling movement toward the heel end of the shoe imparted to the side-lasting mechanisms may be varied by turning the rod 842 by means of a hand wheel 358 thereon. It will be evident that the turning of this rod adjusts the bell-crank lever 324 to space its arm 838 initially more or less above the shoulder 348, and it will be. further evident that whenever such an adjustment of the bell-crank lever is made a compensating adjustment of the rods 84 must also be made by turning the hand wheel 848 if the positions of the side-lasting mecha-' nisms lengthwise of the shoe are to remain th same.

In order to insure that when the wipers 88 of the side-lasting mechanisms wipe the margin of the upper inwardly over the insole the portions of the margin of the insole over which these wipers operate will be held close against the bottom of the last, the machine is further provided with insole holddown mechanism shown in Figs. 1, 9 and 10, this mechanism being supported by the carrier 82 which carries the heel presser foot 58 as hereinbefore described. Mounted to swing about a horizontal rod 852 on this carrier is the hub 854 of an arm 358 on which is mounted a block 358. Pivotally mounted on pins 388 on this block for swinging movements laterally of the shoe about axes extending heightwise of the shoe are two arms 382 which carry holddown members 384 arranged to engage the insole near its marginal edge in the paths of the inward movements of the wipers 88. By reason of the shape of the arms 382 the members 384 extend in generally parallel relation to'the portions of the edge of the insole which curve inward heelwardly of the ball line. The members 384 are mounted on studs 388 on the arms 382 to permit them to turn relatively to the arms and thus to adjust themselves to the contour of the bottom of the shoe, such turning movements of the members being limited by engagement of the arms with shoulders 368 on the members. Between the two arms 382 is a spring 318 which tends to swing the arms apart about the pins 388, such swinging movements of the arms being limited by a bolt 312 which extends through the spring and the arms and has thereon a nut 314 engaging one of the arms and adjustable to vary the specing of the arms. To'permit the holddown members 384 further to be positioned in proper relation to shoes of different sizes, the block 358 is adjustable along the arm 358 on which it is mounted. Formed in this arm are a plurality of recesses 318 arranged to receive the end of a pin 378 slidingly movable in the block 358 to retain the block in adjusted position. Fastened to this pin is a plate 388 which extends across one end of the block 358 and is provided with a lug 382 located at the opposite side of the block from the portion of the plate which is fastened to the pin 318 and normally spaced from that side of the block. In engagement with this lug is a spring 384 mounted in a recess in the block. Accordingly, the pin 318 may be withdrawn from any one of the recesses 316 by pressing against the lug 382 when it is desired to adjust the holddown members lengthwise of the shoe.

The hub 354 of the arm 358 is connected by a tongue 386 to the hub of an arm 388 which can turn about the rod 352, this arm being connected to a link 888. This link corresponds to the link I58 shown in Letters Patent No. 1,843,232 as a part of the means therein described for moving a downward movement to the last and shoe, the link 390 is moved toward the left, as the parts are viewed in Fig. 9, and swings the arm 356 about the rod 352 to move the holddown members 364 downwardly into engagement with the insole. As the wipers 88 wipe the upper inwardly over the insole their pressure against the holddown members 364 causes these members and the arms 362 to swing inwardly against the resistance of the spring, 310, the margin of the upper being clamped between the wipers and the members 364 during a portion of the overwiping operation to increase the efiectiveness of the wipers in wiping the upper tightly over the insole. Near the end of the inward movements of the wipers the holddown members 364 are swung reversely out of engagement with the shoe by the mechanism to the heel end of the shoe by pressing on the plunger 28. He then spreads the margin of the toe end 01 the upper outwardly over the jaw 38 of the toe-end gripper and by depression of the treadle which operates the lever 48 moves the jaw, 36 downwardly to grip the margin of the upper against the jaw 38, the jaw 36 being retained in upper-gripping position by engagement of the lug 46 with the latch 44. Thereafter the operator again presses on the plunger 20 to re-' lease the opposite side-lasting mechanisms and thus cause .them to be moved by the springs I38 into positions determined by engagement of their bumpers I 00 with the sides of the shoe. After the side-lasting mechanisms have received these positioning movements the operator positions the margin of the upper properly between the open jaws of their grippers 86, if it is not already so positioned, and then swings the arm 52 forwardly to actuate the clutch and thus start the power operation ofthe machine, In response to the clutch-actuating movement of this arm the valve 238 is closed, and by reason of the resulting pressure of the operating fluid delivered by the pump 2I2 the jaws I80 of theside grippers are moved into positions to grip the margin of the upper against the cooperating jaws I88.

Immediately after the starting of the machine the last and shoe are forced downwardly with the foot 58 on the bottom of the shoe, and the hold-' down members 384 are swung downwardly into engagement with the opposite side margins'ot the insole. In response to the downward movement of the last the upper is pulled heightwise of the last by the toe-end gripper and the opposite side grippers, and the side-lasting mechanisms are also moved a short distance lengthwise of the last toward its heel end to cause their grippers to pull the upper in that direction, this movement of the side-lasting mechanisms resulting from the downward movement of the work support 6. Thereafter the wipers 88 of the sidelasting mechanisms are operated to wipe the margin of the upper inwardly over the insole by the action of the cam I86 on the lever I34, and in response to the movement of this lever the bar 254 is released from the arm 252 and the valve 230 is opened to cause the grippers 86 to release the upper just as the wipers 88 begin to wipe it inwardly over the insole. The holddown members364 are forced inwardly over the insole by these wipers, the margin of the upper being clamped between these members and the wipers to insure that the upper will be wiped tightly inward over the insole. Near the end of the inward movements of. the wipers 88 the holddown members are swung upwardly away from the insole. After the wipers 88 have completed their inward movements they are retracted from over the shoe and the side-lasting mechanisms are returned to their outermost positions by reverse movement of the lever I34. The toe wipers 24 are then advanced and closed to wipe the margin of the toe end of the upper inwardly over the insole, these wipers being long. enough to overlap portions of the margin of the upp r previously wiped in by the side wipers 88. Just as the toe wipers start to wipe the upper over the insole the jaw 36 oi. the toe-end gripper is released by the lug 46 to permit it to return to starting position. After the toe wipers have operated on the upper in the manner more fully disclosed in Letters Patent No. 2,181,896, these wipers and other parts not already in their starting positions are returned to such positions, the shoe being removed from its support by automatic shoe-removing mechanism with which machines of the illustrated type are commonly provided. It will be understood that the side-lasting mechanisms are returned to their initial positions lengthwise of the shoe by the spring 8I8 when permitted by the return of the shoe support 8, and that the arm 252 also resumes automatically its initial position relatively to the valve-controlling bar 254.

' 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 shaping uppers over lasts, means for gripping the margin of an upper on a last, power-operated means for effecting relative movement of said upper-gripping means and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, and fluid-operated means operative independently of said clutch but controlled by said starting member for closing said upper-gripping means on the upper.

2. In a machine for shaping uppers over lasts, means for gripping the margin of an upper one last, power-operated means for efiecting relative movement of said upper-gripping means and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, fluidoperated means operative independently of said clutch for closing said upper-gripping means on the upper, a valve for rendering said fluid-operated means effective thus to close the upper-gripping means, and means for operating said valve in response to the movement of said starting member.

3. In a machine for shaping uppers over lasts, means for gripping the margin of an. upper on a last, power-operated means for moving the last heightwise relatively to. said upper-gripping means to pull the upper, said power-operated means including a member movable by the operator from an idle position to a position opposite the bottom of the last, a clutch arranged to be actuated by the movement of said member and through which said power-operated means is operated, and fluid-operated means operative independently of said clutch but controlled by said member for closing said upper-gripping means on the upper.

4. In a machine for shaping uppers over lasts, means for gripping the margin of an upper on a last, power-operated means for moving the last heightwise relatively to said upper-gripping means to pull the upper, said power-operated means including a member movable by the operator from an idle position to a position opposite the bottom of the last, a clutch arranged to be actuated by the movement of said member and through which said power-operated means is operated, fluid-operated means operative independently of said clutch for closing said upper-gripping means on the upper, a valve for rendering said fluid-operated means effective thus to close the upper-gripping means, and means for operating said valve by the movement of said member.

5. In a machine for shaping uppers over lasts, means for gripping the margin of an upper on a last, power-operated. means for effecting relative movement of said under-gripping means and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, fluid-operated means operative independently of said clutch but controlled by said starting member for closing said upper-gripping means on the upper, and mechanism operated by said clutch for also controlling said fluid-operated means to cause the upper-gripping means to release the upper.

6. Ina machine for shaping uppers over lasts, means for gripping the margin of an upper on a last, power-operated means for effecting relative movement of said upper-gripping means and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, fluid-operated means operative independently of said clutch for closing said uppergripping means on the upper, a valve movable to render said fluid-operated means eflective thus to close the upper-gripping means, means for thus moving said valve by the movement of said starting member, and mechanism operated by said clutch for also controlling said valve to cause the upper-gripping means to release the upper.

7. In a machine for shaping uppers over lasts, means for gripping the margin. of an upper on a last, power-operated means for effecting relative movement of said upper-gripping means and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, fluid-operated means for closing said upper-gripping means on the upper, a reservoir for operating fluid, a continuously operated pump for delivering fluid from said reservoir, said pump being in continuous communication with said fluid-operated means, a valve normally permitting fluid to return from the pump to the reservoir to maintain the fluid delivered by the pump at substantially atmospheric pressure, and means controlled by said starting member for closing said valve to cause the pump'to develop pressure sufficient to close said upper-gripping means.

8. In a machine for shaping uppers over lasts, means for gripping the margin of an upper on a last,'power-operated means for eifecting relative movement of said upper-gripping means. and the last to pull the upper, a clutch through which said power-operated means is operated, a starting member movable by the operator to actuate said clutch, fluid-operated means for closing said upper-gripping means on the upper, a reservoir for operating fluid, a continuously operated pump for delivering fluid from said reservoir, said pump being in continuous communication with said fluid-operated means, a valve normally permitting fluid to return from the pump to the reservoir to maintain the fluid delivered by the pump at substantially atmospheric pressure} means for closing said valve in response to the movement of said starting member to-cause the pump to develop pressure sufficient to close said upper-gripping means, and mechanism controlled by said clutch for again opening said valve to cause the upper-gripping means to release the power-operated means for effecting relative,

movement of said grippers and the last to pull the upper, a clutch through which said poweroperated means is operated, a starting member movable by the operator to actuate said clutch, a source of supply of operating fluid,-and valve means controlled by said starting member for rendering fluid from said source eifective on said cylinder-and-piston devices to cause the jaws to grip the upper.

10. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a last, each of said grippers comprising a pair of upper-gripping jaws relatively movable to grip the upper and a cylinder-and-piston device for effecting such relative movement of the jaws by fluid pressure, power-operated means for eifecting relative movement of said grippers and the last to pull the upper, a clutch through which said poweroperated means is operated, a starting member movable by the operator to actuate said clutch,

valve in response to the movement of said starting member to cause the pump to develop pressure suflicient to close the gripper jaws on the upper.

11. In a machine for shaping uppers over lasts, means for gripping the margin of an upper on a last, fluid-operated means for closing said upper-gripping means on the upper, a reservoir for operating fluid, a continuously operated pump for delivering fluid from said reservoir, a valve normally permitting fluid to return from the pump to the reservoir to maintain the fluid delivered by the pump at substantially atmospheric pressure, and means for closing said valve to cause the pump to develop greater pressure, said fluid-operated means being in continuous communication with said pump to cause the uppergripping means to close on the upper in response to the closing of said valve.

12. In a machine for shaping uppers over lasts,

grippers for gripping the margin of an upper respectively at opposite sides of a last, each of said grippers comprising a pair of upper-gripping jaws relatively movable to grip the upper and a cylinder-and-piston device for effecting such relative movement of the jaws by fluid pressure, a reservoir for operating fluid, a continuously operated pump for delivering fluid from said reservoir, a valve normally permitting fluid to return from the pump to said reservoir to maintain the fluid delivered by the pump at substantially atmospheric pressure, and means for closing said valve to cause the pump to develop greater pressure, said cylinder-and-piston devices being in continuous communication with said pump to cause them to operate in response to theclosing of said valve.

, 13. In a machine for shaping uppers over lasts, opposite side-lasting mechanisms movable widthwise of a last into positions to operate upon an upper on the last and each comprising a gripper for gripping the margin of the upper and pulling the upper and a wiper for thereafter wiping the margin of the upper inwardly over the bottom of the last, each of said grippers comprising a pair of upper-gripping jaws and a cylinder-and-piston device for efiecting relative movement of the jaws by fluid pressure to grip the upper, a source of supply of operating fluid, and means for rendering the operating fluid effective to operate the cylinder-and-piston devices after the side-lasting mechanisms have received their positioning movements Widthwise of the last.

14. In a machine for shaping uppers over lasts, opposite side-lasting mechanisms movable widthwise of a last into positions to operate upon an upper on the last and each comprising a gripper for gripping the margin of the upper and pulling the upper and a wiper for thereafter wiping the margin of the upper inwardly over the bottom of the last, each of said grippers comprising a pair of upper-gripping jaws and a cylinder-and-piston device for eifecting relative movement of the jaws by fluid pressure to grip the 'upper, and flexible conduits connected to said cylinder-andpiston, devices for conducting operating fluid thereto while permitting movements of said sidelasting mechanisms toward and from the last.

15. In a machine for shaping uppers over lasts,

a gripper for gripping the margin of an upperon a last and for pulling the upper, said gripper comprising a cylinder arranged to extend generally in a direction transverse to the height of the last, a pair of upper-gripping jaws supported on said cylinder in a location substantially opposite one end therepf and arranged to extend generally heightwise of the last, and a piston in said cylinder, said cylinder and piston being relatively movable by pressure of operating fluid admitted to the cylinder to cause said jaws to grip the margin of the upper.

16. In a machine for shaping upers over lasts. a gripper for gripping the margin of an upper on a last and for pulling the upper, said gripper comprising a cylinder arranged to extend generally in a direction transverse to the height of the last, an upper-gripping jaw fast on said cylinder at one end thereof and arranged to extend generally heightwise of the last. a cooperating jaw mounted to swing toward and from said first-named jaw, a piston in said cylinder, a rod connecting said piston to said swinging jaw for swinging it toward the other jaw by movement of the piston in response to pressure of operating fluid admitted to the cylinder, and a spring for imparting return movement to the piston.

17. In a machine for shaping uppers over lasts, a gripper for gripping the margin of an upper on a last and for pulling the upper, said gripper comprising a cylinderarranged to extend generally in a direction transverse to the height of the last, a pair of upper-gripping jaws supported on said cylinder substantially opposite one end thereof, a piston in said cylinder for effecting relative upper-gripping movement of said jaws in response to pressure of operating fluid admitted to the cylinder, the cylinder being mounted for swinging movement heightwise of the last in response to resistance of the upper to the force of the pull applied thereto, and a spring against the resistance of which the cylinder is thus movable.

18. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a last in locations where the edge of the shoe bottom curves inward heelwardly of the ball line, means for effecting relative movement of said grippers and the last to cause the grippers to pull the upper heightwise of the last, and additional means for imparting to the grippers in the course of said relative movement a movement lengthwise of the last toward its heel end to cause them to pull the upper also in that direction.

19. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a last in locations where the edge of the shoe bottom curves inward heelwardly of the ball line, means for moving the last relatively to the grippers to cause the grippers to pull the upper heightwise of the last, and mechanism for moving the grippers lengthwise of the last toward its heel end to cause them to pull the upper also in that direcion.

20. In a machine for shaping uppers over lasts, grippers g ipping the margin of an upper respectively at opposite sides of a last in locations where the edge of the shoe bottom curves inward heelwardly of the ball line, means for moving the last relatively to the grippers to cause the grippers to pull-the upper heightwise of the last, and mechanism .for imparting to the grippers in response to such movement of the last movement lengthwise of the 'last toward its heel end to cause them to pull the upper also in that direction.

21. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a. last in locations where the edge of the shoe bottom curves inward heelwardly of the ball line, means for moving the last relatively to the grippers to cause the grippers to pull the upper heightwise of the last, a work support arranged to partake of such movement of the last, mechanism carried by said work support for imparting to the grippers movement lengthwise of the last toward its heel end to cause them to pull the upper also in that direction, and means relatively which the work support is thus movable for operating said mechanism in response to the movement of the work support. I

22. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a last in locations where the edge oi the shoe bottom curves inward heelwardiy of the ball line, means for movin the last relatively to the grippers to cause the grippers to pull the upper heightwise of the last. a wo'rk support arranged to partake of such movement of the last, mechanism. including a lever carried by said work support for imparting to the grippers movement lengthwise of the last toward its heel end to cause them to pull the upper also in that direction, and a member into engagement with which said lever is carried by the work support for operating the lever in response to further movement of said support.

23. In a machine for shaping uppers over lasts, grippers for gripping the margin of an upper respectively at opposite sides of a last in locations where the edge of the shoe bottom curves inward heelwardly of the ball line, means for moving the last relatively to the grippers to cause the grippers to pull the upper heightwise of the last, a. work support arranged to partake of such movement of the last, a member on said work support for imparting to the grippers movement lengthwise of the last toward its heel end to cause them to pull the upper also in that direction. and another member into engagement with which said first-named member is carried by the work support for operating the first-named member in response to further movement of said support, said members being relatively adjustable to vary the initial space between them and thus to vary the amount of movement lengthwise of the last imparted. to the grippers.

24. In a machine for shaping uppers over lasts, the combination with means for laying the margin of an upper inwardly over an insole on a. last at the opposite sides of the last, of holddown members arranged to press the opposite side marginal portions of the insole upon the bottom of the last, said members being movable inwardly over the insole each about an axis extending heightwise of the last in response to pressure of said overlaying means thereon in laying the margin of the upper over the insole, and a support for said members movable about an axis extending widthwise of the last to car y them into engagement with the insole.

25. In a. machine for shaping uppers over lasts, the combination with means for laying the margin of an upper inwardly over an insole on a last at the opposite sides of the last, of holddown members arranged to press the opposite side marginal portions of the insole upon the bottom of the last, said members being movable inwardly over the insole each about an axis extending heightwise of the last in response to pressure of said overlaying means thereon in laying the margin of the upper over the insole, and an arm supporting said members and mounted for swinging movement heightwise of the last to carry the members into engagement with the insole, the members being adjustable relatively to said. arm tovary their positio lengthwise of the last.

26. In a machine for shaping uppers over lasts. the combination with means for laying the m gin of an upper inwardly over an insole on a last at the opposite sides of the last, of holddown members arranged to press the opposite side marginal portions of the insole upon the bottom of the last, armswsupporting said. members and mounted for swinging movements inwardly over the insole about axes extending helghtwise of the last in response to pressure ofthe overlaying means on the members in laying the margin of the upper over the insole, spring means against the resistance of which the arms are thus movable, a block on which the arms are thus mounted, and an arm. supporting said block and mounted for swinging on vemeni heightwise of the last to carry the holddc'an members into engagement with the insole.

CERTIFICATE OF CORRECTION. Patent 21;. 2,2hl ,067. June 5, 19m.

BERN'HARDT JORGENSEN.

It is hereby certified that error appears in the printed specification 1 the above numbered patent requiring correction as fellows: Eage'7, first lmnn, line [L5, claim 5, for the word "under" read upper--; page 8, sec-- 0nd column, line Y", claim 16, for "upers" read -uppers--; and that the said .ters Patent should be read wi ch this correction therein that the same may :nfom to the record of the case in the Patent Office.

Signed and sealed @113 15th day of July, A. D. 19m.

Henry Van Arsdale Acting Commissioner of E