US2298389A - Assembling machine - Google Patents

Description

Oct. 13, 1942. H. LANE r 2,298,339

' ASS EMBLING MACHINE Filed Kay 22, 1941 5 Sheets-Sheet 1 3 1942- H. LANE ETAL 2,298,389

ASSEMBLING MACHINE Filed May 22, 1941 5 Sheets-Sheet 2 0ct.13, 1942. H. LANE my I 2,298,389

ASSEHBLING MACHINE 1mm: May 22, .1941 5 Sheets-Shoot a 1 3, 19420 LANE ETAL J 2,298,389

ASSBIIBLING cam:

F1106 lay 22, 1941 5 Sheets-Sheet 4 Oct. 13, 1942. H. LANE ETAL 2,298,389

P\SSEMBLING MACHINE Filed lay 22, 1941 5 Sheets-Sheet 5 Patented Oct. 13, 1942 'UNITED STATES PATENT OFFICE ASSEMBLING MACHINE Harold Lane and Cyril H. lames, Leicester, England, assignors to United Shoe Machinery Corporation, Borough of Flemington, N.

poration of New Jersey Application May 22, 1941, Serial No. 394,688

In Great Britain June 7, 1940 v 30 Claims. (Cl. 12-4) This invention relates to improvements in machines for operating on end portions of shoe uppers on their lasts and is herein illustrated as embodied in an assembling machine of the type illustrated in United States Letters Patent No.

1,602,618, granted October 12, 1926, on an application of Norwood H. Knowlton. In certain respects the illustrated machine is similar to the machine illustrated in United States Letters Patent No. 2,057,030, granted October 13, 1936, on an application of Bernhardt J orgensen. It is to be understood, however, that the invention is not restricted to embodiment in a machine of this par- ,ticular type, certain features or the invention belasting margin of the heel end of the shoe is lasted inwardly over a heel piece. In a machine for performing an assembling operation such as that above described, it is desirable that provision be made for pulling up the quarter lining at opposite sides of the heel end of the upper, preferably by means of hand pincers, inorder to eliminate any wrinkles that may have occurred therein.

It is an object of the present invention to improve machines of the type described in the Knowlton patent above referred to to adapt them to operate in a satisfactory manner in the performance of an assembling operation such as that above described.

In common with machines of the type above referred to, the illustrated machine is provided with a work support constructed and arranged to yield in the direction of the height of the last in order to permit the last and the upper thereon .to be located in predetermined heightwise relation to the operating instrumentalities of the machine as the work support moves to position the last lengthwise thereof, the heightwise positioning of the last being effected by a depressor member which acts against the last bottom. In order to leave the bottom of the last unobstructed to facilitate the manual pulling of the quarter lining, the last depressor in accordance with a feature of the invention is constructed and arranged for movement widthwise of the last into a position remote from the last. In accordance with a L, a corper are held in the predetermined heightwise p0- sition in which they are located by the depressor by means constructed and arranged to grip the opposite sides of the upper against the last. The

illustrated depressor comprises a carrier, an arm mounted on the carrier for swinging movement widthw'lse of the last and a presser foot mounted on said arm. For moving the depressor into a position remote from the last, yielding means is provided for swinging the depressor arm away from the last. During its operative movement the depressor is held in last engag position by means comprising a. rail and a roll carried by said arm and constructed and arranged to travel on said rail, means being provided for moving said rail in a direction to permit the arm to swing outwardly away from the last upon completion of the operation of the depressor. During the outward or return movement of the work support, said roll acts on the rail to return it to its initial position in which position it is held by a latch engaging the free end of the rail.

As usual in machines of this type, the latter part of the inward movement of the work support is effected by a cam member constructed and arranged to act on the work support.- In the illustrated machine in accordance with a further feature of the invention, the operation of said cam member is timed by means operable by the initial manual inward movement of the work support. 'As herein illustrated, the cam member is held in position to operate on the work supp rt by a latch which is disengaged from said cam member by the initial inward movement of the support.

For wiping the lasting margin of the heel end of the upper in over a. sole member on the last bottom, the illustrated machine, in accordance with a further feature of the invention, is provided with a pair of wipers for overwiping the lasting margin at opposite sides of the upper, each wiper having a stop to limit its overwiping movement, a carrier for each wiper, a member on each carrier for clampin the upper against the last, means for applying clamping pressure to said clamping members and means for operating each wiper independently of the other to a limit determined by the engagement of the stop on the wiper with a side portion of the upper. The illustrated machine is provided with automatic means for operating the wipers, and manualLv operated means for retracting the. wipers individually in order to airord the operator an opportunity to pull up the quarter linings at opposite sides of further feature of the invention the last and up- 55 the heel end of the upper.

- In the manufacture of. certain types of stitchdown shoes, the lasting m'argin at the heel end of the upper is wiped inwardly over a sole member in the form of a heel piece which is loosely mounted on the bottom of the last. In order to hold such a heel piece in position during the operation of the machine and particularly during the manual pulling of the quarter linings, it has been found desirable to provide suitable means for clamping the heel piece against the last bottom. Accordingly. the illustrated machine is provided with a novel means'for holding such a sole member in place on the last bottom comprising a holddown and means constructed and arranged to operate said holddown as the wiper is retracted 4 panying drawings and pointed out in the appended claims.

In the drawings, Y Fig. 1 is a left side elevation of a machine embodying the features of the present invention;

Fig. 2 is a front elevation of the lower portion of the machine, with the parts in their rest position;

Fig. 3 is a front elevation of the upper portion of the machine, showing the upper at one side overwiped and the wiper at the other side retracted to permit the operator to pull up the quarter lining; I

Fig. 4 is a plan view of the combined wiping and clamping members, certain parts being shown in section on the line IV-IV of Fig. 3;

Fig. 5 is a sectional view taken on a plane indicated by the line V-V in Fig. 2, the parts being in a position different from that shown in Fig. 2;

Fig. 6 is a detail view of parts shown in Fig. 1;

FigsJl, 8 and 9 are enlarged progressive views illustrating parts of a mechanism associated with the shoe depressing means;

Fig. 10 is a front elevation showing part of the shoe depressing means, a last and upper being shown in section; and

Fig. 11 is an enlarged left side elevation showing parts of a track-driving mechanism.

In Fig. 1 there is illustrated a machine having,

in general, the organization disclosed in the patent to Knowlton above identified, to which reference may be had for a detailed description of parts not fully described herein.

The illustrated machine is provided with a base or column I to which is pivoted a work support comprising a carrier 3, a tubular member 5 slidably mounted on the carrier and sustained in an elevated position thereon by a light spring I V (not shown) and a member I slidably mounted in the upper portion of the tubular member and having at its upper end a heel pin 9 on which a last may be mounted. The member I is supported by a notched sleeve I I carried by the tubular member 5. As in the machine of the knowlton patent above referred to, the shoe is moved downwardly into correct heightwise relation to the operating instrumentalities of the machine by means operable by the inward movement of the work support. As herein illustrated, this mechanism comprises a small block 2I- (Figs. 1 and i0) pivotally mounted at 23 on the upper end portion of a depressor, herein illustrated as a bent arm 25, adjustably secured to the upper end of an upstanding member 21 secured at its lower end by a forwardly and rearwardly extending pivot pin 29 (Figs. 2, '7, 8 and 9) to the upper end of an upright bar or carrier 3|, the mid portion of which is slotted to embrace one of a pair of trunnions 33 mounted on the tubular member 5. A tension spring (not shown) connects the bar 3| to the carrier 3 and tends to swing said bar about said trunnion into a position of alinement with the tubular member 5. For causing the depressor to move downwardly during its movement inwardly. or to the left as seen in Fig. 1, a forwardly and downwardly extending link 35 is pivotally connected at its upper end to a lug 31 on the machine frame and its lower end is pivoted to the upper end portion of the bar 3|. The upstanding member 21 is provided at its lower end with a short, transversely extending arm 39 (Fig. 2) having a Small roll 4| mounted thereon. A spring 43 connected between the arm 39 and the bar SI tends normally to swing the upright member about the pivot pin 29 to carry the depressor away from the shoe support, such swinging movement of the member being restrained, however, by a rearwardly extending curved rail 45, the upper face of which is arranged to be engaged by the roll 4I (Figs. '7 to 9). The upper surface of the rail in its operative position, as seen in Figs. '1 and 8, provides a convexly curved surface for the roll 4| which is so arranged that during the inward movement of the depressor assembly, the member 21 is supported by the rail in an upright position against the action of the spring 43, the curvature of the rail being such that the member 21 is held against-movement widthwise of the shoe as the shoe is advanced heelwardly into position to be operated upon by the operating instrumentalities of the machine. The rail is pivoted at 41 (Fig. 8) to a bracket 49 secured to the machine frame and its free end is held in the position illustrated in Fig. 8 by an upstanding latch lever having a groove 53 which receives the free end of said rail, a light tension spring 51 urging said latch lever toward the end of the rail. The rail is swung upwardly into latched position by a spring 50. As the shoe moves heel foremost into position to be operated upon, the roll 4I travels from its position in Fig. 7 to its position in Fig. 8 and during such movement of the roll, the

'rail is held in its latched position. During the latter part of the movement of the member 21, the rear part of the shoe is brought into engagement with the upper engaging pads, indicated generally at 63 (Fig. 1), and these pads grip the shoe and hold it securely against upward movement.

As the member 21 comes to the limit of its movement, a machined surface 6| on said member TI engages a screw 59 at the upper end of the latch lever 55, disengaging said lever from the free end of the rail and permitting'the spring 54 to swing the member 2-1 outwardly away from the shoe and to swing the rail downwardly in its position illustrated in Fig. 9. The construction and operation of the pads 63 which grip the upper against the last and hold the last and upper against heightwise movement after the depressor is withdrawn are fully illustrated and described in United States Letters Patent No. 2,235,934,

granted March 25, 1941, upon an application filed in the names of Harold Lane and George Hazelton.

After the shoe support has been swung inwardly to position the shoe relatively to the operating instrumentalities of the machine, a cam member or hook 65 (Fig. 1) operates on the work support to move the shoe forcibly into the I clamping pads 63 and to hold it against return movement during the subsequent operations of the machine. The hook 65 is similar in its construction and operation to a corresponding hook illustrated in the Knowlton patent above referred to, and as illustrated in said patent, the hook operates mechanism for locking the tubular member 5 'of the work support against downward movement to sustain the last for the subsequent tack-driving operations. As herein illustrated, the hook is mounted on a cross-shaft 61 and operated by a spring 69 connected to the bifurcated tail portion H of the hook. 'I he hook is normally maintained in an uplifted or retracted position by the engagement of a slabbed-off surface of a cross-pin 15 (Fig. 6) in the bifurcated tail portion 1| of the hook with'a latch piece 11 on a vertical rod 19 which is pivoted at its upper end to the rearwardly extending arm of a cam-operated bell crank lever 9| (Fig. 1) pivotedat 83 to the frame of the machine. A tension spring 85 secured at one end to the machine frame and, at its other end to the rod 19 serves to holdthe rod in such position that the latch piece 11 will remain in contact with the cross-pin 15. In order to release the hook 65 to the action of the spring 69, a rod I5 which serves to limit outward swinging movement of the shoe support has a pivoted tail portion 81 held in position by a small spring 89 (Fig. 6). As the shoe support swings inwardly of the machine the tail portion strikes the lower end portion of the rod 19, swinging said rod and moving the latch piece 11 away from the surface 15 and freeing the hook to the action of the spring 69. This action of releasing the hook is arranged to take place almost as soon as the clamping pads 53 have commenced to wipe the heel portion of the upper toewardly.

With a view to wiping opposite sides of the heel portion of the upperzinwardly across the shoe bottom, means in the form of combined wiping and clamping members is provided for acting on the upper in locations adjacent the ends of above described, and means is provided for swinging each blade and pad into engagement witha shoe after the shoe support has been swung rearwardly into the machine, this means comprising a vertical rod I09 (Figs. 1 and 2) housed in bearings I09 in the machine frame. The member 99 is secured at its rear end portion to the upper portion of the rod I08 and a torsion spring III surrounding the rod tends normally to swing it to operate the wiping blade and clamping pad. In order-to hold each torsion spring III loaded and each carrier member 99 in a retracted position, the lower portion of each rod I08 is provided with an inwardly projecting arm II3 (Fig. 5) arranged to bear against the forward and upper end face of the upwardly extending arm of a bell crank lever H5 pivoted on a stud I I1 in a bracket II 9 on the machine frame, there being two such bell crank levers, one for each arm H3. The rearwardly extending arm of each bell crank lever II5 has a roll I2I (Figs. 1 and 5) pivotally mounted thereon which, due to the action of the torsion spring surrounding the rod I08, is arranged to be pressed against the upper face of the hook 65. The hook therefore acts as stop means to prevent the'torsion spring III from moving the rod I08 and hence acts to hold the wiping blade and the clamping pad in retracted position. When the hook 65 is moved down to carry the shoe support into its final.

operative position in the machine, each bell crank lever H5 is released to operate the carrier member 99 thereby to cause the wiping bladesand clamping pads to act on the upper. To prevent each wiping blade 95 from moving too far inwardly of the machine there is provided on the lower side of each block 93 a projection I23 (Fig. 3) adapted to engage that portion of the upper adjacent to the edge face of the insole the wings of a molded counter in the upper.

Each of said means comprises a block 93 (Fig. 3) carrying a resilient wiping blade 95 on its upper face and having spaced lugs by means of which it is supported on a forwardly extending stud 91 carried on a carrier member 99 supported as hereinafter described. Freely mounted on the stud 91 between the lugs of the block 93 is a swinging arm IOI which carries at its free end a rubber clamping pad I03 arranged to press against and clamp the sides of a shoe upper to the sides of a last. A small compression spring I05 housed between the lower face of the block 93 and a shoulder I01 on the arm IOI serves to urge the arm in such a direction as to cause the clamping pad I03 to be pressed against the upper while at the same time allowing it to yield outwardly to accommodate. itself to lasts of varying shapes and sizes. Each wiping blade 95 and the clamping pad I03 are normally arranged to occupy such an outspread position that they do not impede the movement of a. shoe into the machine or rearward swinging of the shoe support as treadle I30, the bell crank lever II5 associated or loose seat piece (whichever is being used) on the bottom of the last. With aview to allowing the operator to inspect the upper after it has been wiped over by the wiping blade and to affording him an opportunity to pull up the quarter lining of the upper if desirable, means is provided for retracting each wiping blade and clamping pad while the other wiping blade and clamping pad remain in contact with the shoe. For this purpose the rear end of the rearwardly extending arm of each bell crank lever I I5 carries a laterally extending pin I25 (on which the roll I2I is mounted). Said pin is arranged to be held in a slot I21 in the upper part of a vertical rod I29 connected at its lower end to the rear end of a treadle I30 (Fig. 2). During the automatic movements of each bell crank lever II 5 under the influence of the springs III as above described each pin I25 will move freely in its slot I21 and will thereby communicate no movement to its treadle I30, thus guarding against the possibility of trapping the operator's foot between the treadle and the floor on which the machine is standing. When, however, the wiping blades and clamping pads are in operative position each pin I25 will occupy a position close to the lower end of its slot I21 and, by depressing the appropriate therewith will be swung about its stud H1 and its upwardly extending arm will engage the in-' wardly projecting arm 3 on the vertical rod I08 which supports the carrier member 99 and swing the rod against the action of the torsion spring III surrounding it, thereby moving the wiping blade and clamping pad away from the shoe upper. By maintaining the treadle depressed, the operator will be afforded the opportunity of inspecting the upper and, if need be. he may, by gripping the lining with a pair of pincers, pull the lining into correct heightwise position in which it will be free from undesired wrinkles. After having inspected the upper the operator may then release his foot from the treadle and allow the wiping blade and clamping pad once more to engage the upper.

In the manufacture of some kinds of stitchdown shoes it is customary, instead of using an insole which is tacked to the last bottom in usual manner, to make use of a heel seat piece which extends from the heelend of the last bottom forwardly into the shank portion. This heel seat piece serves to receive the fastenings driven during the heel seat lasting operation thereby to hold the upper in lasted position, and it is usual for this heel seat piece to be assembled loose on the bottom of the last and not attached thereto in any manner. During the gripping of the lining of the shoe upper by the hand pincers as just described the-loose heel seat piece would tend to become displaced from position on the bottom of the last and consequently means is provided in the illustrated machine for holding the heel seat piece down against the last bottom "during the time a wiping blade and clamping pad 'are moved away from the shoe upper as above ing through a vertical slot I31 in the sleeve member I33 is secured to the upper end portion of the presser member and is received in a slot in the forward end of lever I39 pivoted between its ends to the bracket I34. To the rear end of the lever I39 is secured the upper end of an upwardly extending bar I4I. As seen in Fig. 2, at its lower end portion the bar I4I has a transversely extending portion I43 and a downwardly extending portion I45, this latter portion passing close to the outer side of the upper end of the righthand treadle rod I29. This portion I45 is slotted at I41 and the pin I25 associated with the righthand treadle rod I29 passes through the slot i 31 and serves to guide the bar I4I for vertical movements as will be described. The transversely extending portion I43 is adapted to rest on the upper ends of the treadle rods I29 and the arrangement is such that when the left-hand treadle rod is raised to move the left-hand wiping blade and clamping pad away from the shoe upper this rod will move the bar I upwardly, thereby depressing the presser member I3! into engagement with the heel seat piece on the wt bottom. Similarly, when the right treadle rod I29 is raised to move the right-hand wiping blade and clamping pad the transversely extending portion I43 will be moved upwardly, moving the presser member I3I downwardly as above described.

For driving a tack through each portion of the upper adJacent the wiping blade 95, so that the shoe may conveniently be removed from the machine in wiped over condition, there is pivotally mounte on the left-hand side of the slide I 55 a down ardly extending bent lever IBI (Figs. 1, 4 and 11) having transversely extending por tions I53, I63 at its lower end. The left po tion I83 extends outwardly of the machine while the right portion extends underneath the slide I55. Connected to each portion I93 by a ball aacasaa joint connection I65 is a forwardly extending arm I61 and to the offset forward portion of each arm there is secured a tacker frame I69. Each tacker frame has an upward extension I19 (Fig. 11) and mounted thereon by means of a slot and bolt connection I1I is a driver-guiding member I13 through which passes a downwardly extending tack driver I15. Each tack driver has a universal connection with a head I11 (Fig. 1) which is connected to a driver lever I51. Tacks are fed from a tack pot (not shown) through tack-tubes I19 (Fig. 3) to tack-holding fingers I 8I mounted on the lower end portions of the driver-guiding members I13 and are driven from said fingers by the tack drivers I15 during the power operation of the machine. For controlling the positions occupied by the tacker frames I89 just prior to the driving of tacks therefrom in accordance with the positions occupied by the wiping blades and clamping pads after the latter have performed their wiping and clamping functions, the tacker frames I69 are urge towards each other by a tension spring I83 (Fig. 3) connected between the driver-guiding members I13, and each forwardly extending arm I61 (Fig. 4) has a roll I rotatably mounted on its underside. Each roll is held by the action of the spring I93 in engagement with the edge face of a forwardly extending guide member or plate I81 (Figs. 3 and 4) secured to the carrier member 99, the shape of the plate being such that forward movement of the tacker frame I99 will also cause it to swing inwardly. It will he realized, therefore, that when the cam-actuated slide I55 is moved forwardly toward the heel end of the upper to cause the combined gripper and wiper to act on the upper the tacker frames will also be moved forwardly and due to the shape of the plates I81 the tacker frames will move inwardly. Since the inward positions of the wiping blades are controlled by the engagement of the small projections I23 thereon (Fig. 3) with the edge of the insole or seat piece and these positions may vary due to the different shapes of insoles or seat pieces assurance is thus afforded that tacks will always be driven through the overwiped marginal portions of the upper material. Furthermore, each of the tack-holding fingers I8I is urged downwardly by means of a spring I89 (Fig. 11) connected between the finger and the upward extension I19 of the tacker frame I69, thereby giving assurance that when moved over the shoe bottom the nozzles will contact with the shoe upper, yielding upwardly if necessary against the action of the springs to accommodate themselves to the heightwise contour of the shoe bottom.

In case it should be desired to vary the positions of the tacker frames relatively to the wiping blades and clamping pads, provision is afforded in the illustrative machine for adjusting the initial positions of said frames lengthwse of the upper. For this purpose the downwardly extending lever I9I is provided about mid-way of its height with an adjusting screw I 9I (Figs. 1 and 11) arranged to abut against a stop pin 4 93 fixed in the slide I55 and a tension spring I95 is provided for maintaining the adjusting screw against the stop pin. By rotating the screw I9I the lever arm I5I will be moved about its connection with the slide and will move the tacker frames forwardly or rearwardly of the machine depending upon the direction'of rotation of the screw.

Since it is desired to aflord the operator opportunity to inspect a shoe after the wiping pads laterally extending pin 20! in the tail of the'hook and by depressing this pin the hook tion in'Fig. 7 to return the'depressor to its initial position. During the latter part of its movement along the rail, the roll 4| moves across the fulcrum of said rail and acts together with the spring 50 to swing the rail about its fulcrum and into latched engagement with the upstanding lever 55.

In order to reset the clutch-tripping parts the I rear end of a pivoted member I99 (Fig; 1) is connected to the lower end of an upwardly extending "rod 2i" which in turn is connected at its upper end to the vertical rod l9. When the rod 18 is moved by the cam-actuated bell crank lever M to release the hook from the shoe support the rod 20! operates through mechanism similar to that provided in the machine of the Knowlton patent above referred to, to reset the clutch-tripping? .parts.

In the use of the illustrative machine if, after the shoe has been clamped in position, the operator desires for any reason to remove the shoe will be raised out of engagement with the shoe support thereby allowing the latter to move to' inoperative position. As described above, this movement of the shoe support will move the depresser to inoperative position and the movement oi thehook will move the combined wiping blades and clamping members outwardly away from the shoe.

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

1. In a mach ne for operating on an end of a shoe upper on a last, the combination with work support constructed and arranged to yield in the direction of the height of the last, said;

work support being arranged for movement in the direction of the length of the last, of a last de; presser operable by such movement of the work support to position the last heightwise thereof relatively to the operating instrumentalities oi the machine, said last depressor being constructed and arranged for movement widthwise of the last intoa position remote from the last.

2. In a machine for operating on an end of a shoe upper on a last, the combination with a work support constructed and arranged to yield in thedirection or the height of the last, said work support being arranged for movement in the directionof the length oi'the last, of a last depressor operable by such movement of the work support to position the last heightwise thereof relatively to the operating instrumentalities of the machine, and automatic means formoving the depressor widthwise of the last into'a position remote from ,the last. g

3. In amachine for operating on an end of a shoe upper on a last; the combination with a work support constructed and arranged to yield in the direction of the, height of the last said widthwise of the last into 4. In amachine for operating on an end portion of a shoe upper on a last, the combination with a work support,=said work support being arranged ior movement in the direction of the length of the last, and means for gripping said end portion against the last, of a last depressor operable by such movement of the work support to position the last heightwise thereof relatively to the operating instrumentalities of the machine, and automatic means for moving said last depressor widthwise to the last into a position remote from the last. TV

5. In a machine for operating on an end portion of a shoe upper on a last, the combination with a work support and means for gripping said end portion against the last, of a last depressor operable by .movement oi, the work support to move it into a position remote from the last.

6. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to Present the upper to operating instrumentalities of the mawith a work support being arranged for movement in the direction of the length of the last, of a last depressor operable by such movement of the work support to position the last heightwise thereof relatively to the operating instrumentalities of the machine, and a carrier on which said depressor is mounted for swinging movement 7 moving said rail arm to swing outwardly away from the last.

chine, of a last depressor comprising a carrier, an arm mounted on 'the carrierior swinging movement widthwise of the'last, a presser ioot' mounted on said arm, and means whereby the depressor is operated upon inward movement of the work support.

a 7. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of the machine, of a last depressor comprising a carrier, an arm mounted on the carrier for swinging movement widthwise of the last, and a presser foot mounted on said arm, means for swinging said arm away from the last, and means for holding said arm against such swinging movement during the greater part of theinward movement of the work Support.

8. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of the machine, of a last depressor comprising a carrier, an arm mounted on the carrier for swinging movement widthwise of the last, and a presser foot mounted on said am, means for swinging said arm away from the last, said arm against such swinging movement during the greater part of the inward movement of the work support. said last-mentioned means comprising a rail and a roll carried by said am and constructed and arranged to travel on said rail.

9. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of themachine, of a last depressor comprising a carrier,

an arm mounted on the carrier for swinging movement widthwise oi the last and a presser foot mounted on said arm, means for constantly urging said arm away from the last, means for holding said arm in a position adjacent to the last comprising a roll carried by said arm and a rail. on which-5a d roll travels, and means for in a direction to permit the 10. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of the machine, of a last depressor coniprising a carrier,

and means for holding 3 and the combined wiping blades 85 and clamping pads I03 have operated thereon prior to the driving of tacks through the upper, the illustrative machine is provided with a clutch-tripping handle I91 (Fig. 1) arranged to be controlledbyr the operator instead of being automatically controlled by inward swinging movement of the shoe support as in the case of the machine of the h Knowlton patent above referred to. mechanism on which the handle I91 operates is The clutcii' substantially the same as in the Knowlton rnapincers, (indicated, by broken lines in Fig. 3) poll formed separately from their foreparts or vamp portions. The operator will assemble an upper loosely around a last on the bottom of which is loosely positioned a seat piece and will then mount the last on the heel pin 1 of the shoe support.

After having ascertained.that a suilicient marginal portion of the upper extends beyond the bottom of the last to allow it to be effectively wiped over and tacked to the seat piece the operator will swing the shoe support rearwardly into the machine. As the shoe support is moved inwardly the upright bar 3! moves with it due to the engagement of the trunnion 33 with the slot in the bar which causes the bar to be swung about the pivot pin for the lower end of the said downwardly and forwardly extending link 35. These movements of the shoe support I and the bar 3| cause mutual relative approaching movement between the depressor and the shoe on the support until the lower end portion of the bar 3! contacts with the frame of the machine. By this time the depressor will have reached a position approximately over the heel seat portion of the shoe on the shoe support and further movement of the shoe support will cause the link 35 to move rearwardly of the machine about its upper end portion. This in turn will cause downward movement of the depressor causing it to engage the bottom of the shoe to depress the same into convenient position for the operating instrumentalities of the machine to operate on it. The

final rearward movement of the shoe support will bring the machined face 6| on the member 21 againstvthe stop pin 59 on the lever 55 in the groove 53 in which the rail 45 is then mounted (Fig. 8). The lever 55 will thereupon be urged backwardly against the action of the light tension spring 51 freeing the rail 45 therefrom. The rail will then be freed for downward swinging movement to allow theupstanding member 21 to be swung about its pivot under the action of the spring 43 (Fig. 2) to carry the depressor'away from over the shoe bottom, the position of the parts at this stage being shown in Fig. 9. Further rearward swingingmovement of the shoe support I will move the rod l5 rearwardly to bring its tail portion 81 into contact with the lower end portion of the rod 19 thereby freeing the hook 65 to the action of the spring is and allowing it to move the shoe support further inwardly of the machine. As described above the clamping pads 83 will, during movement of the shoe into the machine, urge opposite side portions of the heel end portion of the sho upper forwardly to prevent the formation of undesired the shoe bottom. Release of the hook from the shoe support will allow the latter to swing into wrinkles in said portion of the shoe, after which the pads will clamp the upper against its last. Downward movement of the hook I will also free the combined wiping blades ll and clamping pads I03 for inward movement under the action of the torsion springs Ill and inward movements of the blades will be limited by engagement of the projections :23 (Fig. 3) on the underside of the wiping blades U! with the'upper opposite the edges of the seat piece and as a result of the action of the wiping blades on the shoe upper the portions of the upper adjacent the corners or forward portions of the wings of a counter in the upper will be wiped inwardly across the shoe bottom. The operator will then free first one wiping blade by depression of the appropriate treadle and will by the use of hand the lining of the upper upwardly to ensure that it is in free and unwrinkled condition and then by releasing the treadle will allow the blade once more to move inwardly across the shoe bottom and by the action of this wiping blade, together with its associatedclamping pad the upper will be clamped in wiped over condition. The position the parts assume upon depression of the treadle associated with the left hand wiping blade is indicated in Figs. 3 and 5. Similarly, the other wiping blade will be released to allow the lining on the other side of the shoe to be pulled up. During the pulling oi the lining by the hand pincers the seat piece will be held from V movement on the last bottom by the action of the presser foot I which is automatically lowered upon depression of either of the two treadles associated with the respective wiping blades. After having ascertained that the upper is in correctly clamped position the clutch-tripping handle I91 will be actuated to set the machine into power-operation. During the power operation of the machine the back seam portion of the lasting margin is pulled up and wiped inwardly over the heel seat piece and tacked thereto. The side tacker frames I" are then moved both forwardly and inwardly of the machine and guided by contact with the plates "1 (Fig. i) 'so that the tacks will be driven through the overwiped margins of the upper. As 'the machine nears the end of its power operation the camoperated bell crank lever ll will be actuated to move the rod I 9 first upwardly to carry the latch piece 11 (Fig. 6) thereon beyond the plane surface II and will then move. the rod downwardly to swing the hook against the action of its spring into inoperative position, the pivoted tail portion 81 of the rod l5 moving against the action of its spring I! if need be to permit downward movement of the other shoe. Upward movement of the hook I! will swing the two bell crank levers Ill about their pivots to rotate thevertical rods I" against the action of the torsion springs III to move the wiping blades and clamping pads away from over its inoperative position, illustrated in Fig. 1, and during this movement the upright bar ll carrying the depressor-supporting member will by reason of its engagement with the shoe support also be moved forwardly. The roll]! on the depressort-supporting member will travel along the pivted rail ll from its position in Fig. 9 to its posian arm mounted on the carrier for swinging movement widthwise of the last and a presser foot mounted on said arm, means for constantly urging said arm away from the last, means for holding said arm in a position adjacent to the last comprising a roll carried by said arm and a rail on which said roll travels, means for moving said rail in a direction to permit the arm to swing outwardly away from the last, said rail being so mounted that it is returned to its initial position by the depressor arm in the course of the return movement of said arm, and a latch for holding the rail in its initial position.

11. In a machine for operating on a shoe upper on a last, the combination with a work s pport movable inwardly to present the upper to operating instrumentalities of the machine, of a last depressor comprising a carrier movable with said support, an arm mounted on the carrier for swinging movement widthwise of the last and a presser foot mounted on said arm, a roll on said arm, a rail on which said roll travels during the inward movement of the work support and the depressor, said rail seing movable to permit the arm to swing widthwise of the last, and a latch for holding the rail against such movement.

12. In a machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of the machine and constructed and arranged to yield in the direction of the height of the last, of aflast depressor operable by the inward movement of the work support and movablewidthwise of the last into a position remote from the last.

13. Ina machine for operating on an end of a shoe upper on a last, the combination with a work support movable inwardly to presentthe upper to operating instrumentalities of the machine, of a cam member operable after an initial inward movement of the work support to impart a further inward movement to said support, and means operable by said initial movement of the support to time the operation of said cam member. i

-l4. In a machine for operating on the end of a shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities of the machine, of a cam member operable automatically after an initial inward movement of said support to impart a further -inward movement tosaid support, and means operated by said initial movement of the support to render the cam member operative.

15. In a machine for operating on the end of a'shoe upper on a last, the combination with a work support movable inwardly to present the upper to operating instrumentalities oi the machine, of a cam hook operable after an initial inward movement of said support to impart further inward movement thereto, a spring for operating said hook, alatch for holding said hook in position to operate on said support after itsinitial inward movement, and a member operable by said initial movement of the support to un atch said hook.

16. In a machine for operating on the end of a shoe upper on a last, the combination with lasting wipers and a work support movable inwardly to present the upper to the wipers, of a cam hook operable after an initial inward movementof said support to impart further inward movement thereto, a spring for operating said book, a latch for holding said hook in position to operate on said support after its initial inward movement, a member operable by said initiai movement of the support to unlatch said hook, means for returning the hook to its latchedposition, and means operable by the return movement of said hook to retract the wipers.

17. In a machine for operating on the heel end of a shoe upper on a last, a pair of wipers for overwiping the lasting margin at opposite sides of the upper, each wiper having a stop to limit its overwiping movement, a carrier for each wiper, an upper clamping member pivotally mounted on each carrier, means for applying clamping pressure to said clamping members, and means for operating each wiper independently of the other to a limit determined by the engagement of the stop on the wiper with a side portion of the upper.

18. In a machine for operating on the heel end of a shoe upper on a last, a wiper foroverv} wiping the lasting margin of the upper, autoe matic means rendered operative by longitudinal movement of the last to actuate said wiper and yieldingly to hold it in overwiped position, and manually operated mean: for retracting the wiper after it has been actuated.

19. In a machine for operating on the heel end of a shoe upper on a last, a pair of wipers for overwiping the lasting margin of the upper, automatic means rendered operative by longitudinal movement of the last' to actuate said wipers, and manually operated means for retracting said wipers individually.

20; In a machine for operating on the heel end of a shoe upper on a last, a pair of wipers for overwiping the lasting margin of the upper, a

pair of upper clamping members mounted for movement with the wipers, automatic means. for simultaneously operating the wipers and the clamping members, and manually operated means for individually retracting the wiper and clamping member assemblies.

21. In a machine ior operating on the heel end of a shoe upper on a last, the combination with a work support movable lengthwise of the last. and a cam member for moving said support, of a wiper for overwiping the lasting margin of the upper, an upper clamping member mounted for. movement with the wiper, and means rendered operative by movement ofsaid cam member for automatically operating said wiper and clamping member.

22. In a machine for operating on the heel end of a shoe upper on a last, the combination with a worksupport movable lengthwise of the last, and a cam member for moving said su; wort, ore wiper for overwiping the lasting margin of the upper, an upper clamping member mounted for movement with the wiper, means rendered operative by movement of said cam member for automatically operating said wiper and clamping member, and manually operated means for retracting said wiper. and clamping member.

23. In a machine for operating on the heel end of a shoe upper on a last, a wiper for overv wiping the lasting margin of the upper, a hold- In a machine m operating onthe heelend of a shoe upper on a'last; the-combination with a 7 work DPort movablelengthwise 01 a last mounted thereon, and a member for moving said support',-of a pair'ot wipers for overwiping the lasting margin of the up'per, means controlled bas dca embe to aiibqmfltically ope ati g ope a id nt f6? i d du ly etra tin sa wis r; and for simultaneously operating said hoiddown:

26. In a mach ne ioroperatlng on theh'eel'end of ashoe upper onfla last; the combination with a for overwipingthe-back-seam portion-of the lasting "ma'rgiriof the upper; wipers for overwiping opposite'sides' of th'e-heel'portion of the lasting margin andcarrlers for said last-mentinned wipers: of fastening-inserting members forvv secur ng overw'iped side pombns oithe lasting margin to' a sole, g nieans: 1'6! saidrastemnggmsemng members m vab e metal-sly oi the upper, and means positioned by the adyanee'ment of said side wipers for locating said iastening-ins'e'rtin'g members wldthwise oi the securing the overwipjed side portions-0'! the last-.

ing margin to a sole, carrying means for said fastening-inserting members movable toewardly oithe upper, and guide members mounted onthe side wiper carriers and constructed and arranged to guide the fastening-inserting members during their toeward movementand to position them widthwise of the last.

28. In a machine for operating on the heel end of a shoe upper on a last,the coiribination with a wiper for overwiping the back-seam portion of the lasting margin of the upper wipers for overwiping opposite sides of the heel portion of the lasting margin and carriers for said last-mentioned wipers, of fastening-inserting members for securing the overwiped side portions oi'the lasting margin to a sole, carrying means for said fastening-inserting members movable toewardly of the upper, guide members mounted on the side wipercarriers and constructed-and arranged to guide the fastening-inserting members during their toeward movement and to' position them widthwise of the last, and meansfor adJustinI the initial positions of the fastening-inserting members lengthwise of the last.

29. In a machine for operating on an: end of ashoe upper on alast, the combination with a work support movable inwardly to present the upper to the operating" instrumentalities of the machine. of a cam member for imparting inward movement to said support and means for retracting" said cam member to permit the worksupport to move outwardly without awaiting the completion of the cycle of operations of the machine.

30. In a machine for operating on an end oi a shoe upper on a last, the combination with-a work support movable inwardly to present the upper to the operating instrumentalitles oi the machine, of a cam member for imparting inward movement to said support, and means operable manually at the will of the operator for retracting the cam member without awaiting the completion of the cycle of operationsof the machine.

CYRIL HARRY JAMES.

Images