US2293863A - Machine for and method of operating upon the heel portions of shoes - Google Patents

Description

MACHINE FOR AND METHOD OF OPERATING UPON THE HEEL'PORTIONS OF SHOES Filed April 25, 1941 '3 Sheets-Sheet 1 I56 I50 154 12a 4521 ,190

W gwam I we Aug. 25, 1942.

F. E. STRATTON 2,293,863 MACHINE FOR AND METHOD OF PEBATING UPON THE HEEL-PORTTONS 0F sHoEs Filed April 25, 1 941 s sheets-sheet 2 g- 1942- I I F. E. STRATTON 2,293,863 I MACHINE FOR AND aim-non 0F OPERATING UPON THE HEEL-PORTIONS OF SHOES Filed April 25, 1941 3 Sheets-Sheet 3 Figs gym/5275i? Patented Aug. 25, 1942 MACHINE FOR AND METHOD OF OPERAT- ING UPON THE HEEL SHOES PORTIONS F Frank E. Stratton, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application April 25, 1941, Serial No. 390,316

42 Claims.

My invention relates to the performance of operations upon the heel-portions of shoes, it being more especially concerned with the insertion of fasten-sings, as those used for attaching a heel or heel-portions.

lnLetters Patent of the United States No. 2,207,742, La Chapelle, July 16, 1940, as modified in some respects by the Patent 2,293,624 granted August 18, 1942, on an application filed in the name of Winfield H. Parkhurst, is disclosed a machine by which a heel, held upon the heel-seat of a shoe, is pricked to form fastening-receiving openings, after which attaching fastenings are inserted in the openings. In a machine of this character and in others, it is important that a tool, as the drivers of La Chapelle and Parkhurst, acting as awls, shall enter the work to a predetermined depth, so the opening may terminate in the desired relation, or that a fastening being inserted by a tool shall have its head sunk to the proper extent.

An object of my invention is to provide for the control of a tool, whether it be of the character of an awl for making an opening in work, a reciprocatory driver for inserting a peg or a nail, with or without the formation of a receiving opening, or a rotary driver for inserting a screw, so in each case the movement of the tool shall be determined. For the accomplishment of this object, I combine with a support for the work and a movable operating tool, such a member as a feeler, movable in the support or in co-o-peration with clamped work to test the position of said work, and thereby control the movement of the tool and so the extent to which it is advanced. If a lasted shoe is to be operated upon, the last will be provided with a passage through which the feeler is movable, preferably into engagement with the heel-plate of the last, since this is free from the irregularities which may ocour in a shoe. In making such a test, the last is to be considered a portion of the work. The feeler may receive its testing movement, as by connection to a co-operating piston and cylinder, through fluid-pressure, and may act upon fluidlcontrolling means, as a valve. In the present embodiment of the invention, a feeler, by moving to test the work, sets the valve, which limits the movement of a stop, and this, in turn, so .positions a transmitting member that a definite amount of lost-motion is introduced between a carrier for the tool and the means by which it is actuated. Since, in the operating cycle of the shall be controlled in this manner and shall also act independently of such control, as in the successive work-pricking and fastening-driving operations of La Chapelle and Parkhurst, a retaining member co-operates with the stop to render it selectively effective or inefiective. In connection with this phase of the invention, there is also involved a method for operating upon the heel-portions of shoes, in accordance with which a shoe is jacked, its position upon the jack tested, and a tool advanced to operate upon the shoe to an extent determined by the test. When the method is utilized for the attachment of heels to shoes by fastenings in the manner of the previously mentioned patent and application, the tool may be a driver, whichis advanced to act as an :awl and .prick the work in accordance with the test, and is then again advanced to serve as a driver to insert the fastening in the pricked opening.

A further object of the invention is to apply to the work the fence by which it is held for the operations upon it, as to the establishment of preliminary engagement and the creation of final clamping pressure, by simple and eflicient mechanism. This is effected by fluid-pressure produced by a member movable by the operator, which may cause the engagement of the workholding means. Then, means acting under the power of the machine may increase the fluidpressure for the clamping of the work. Retaining means for the operator-moved member is preferably fiuid-pressure-actuated. Herein is shown a pair of cylinders with their co-operating pistons, an element of one pair being actuated by the operator through a treadle and one of the other pair moving under the influence of the fonce which the operator thus creates to place preliminary pressure upon the work. This is increased to final pressure by movement between a third piston and cylinder under the power of the machine. The final fluid-pressure is temporarily retained in the preliminary-pressurecylinder by a check-valve interposed between it and. the final-pressure-cylinder. This ensures against displacement of the work under the force of the operating tool. Retaining or latching means for the treadle is shown as furnished by still another piston and cylinder, controllable by the operator.

The accompanying drawings illustrate a particular embodiment of my invention,

Fig. 1 showing the improved machine in partial machine, it may be desired that the same tool front elevation;

Fig. 2 being a horizontal section on the line II-II of Fig. 5;

Fig. 3, a diagrammatic representation of the fluid-pressure-system;

Fig. 4, a broken front elevation of the lower portion of the machine; and

Fig. 5, a central vertical section through this portion, taken from front to rear of the apparatus.

The general organization herein disclosed may be that of the previously mentioned application. Carried on a frame It is a die-block l2, which serves as a support for a heel or lift to be attached to the heel-seat of a shoe, and also as an abutment supporting said shoe against clamping pressure. In passages in the die operate tools I4, in the present instance serving both as awls to prick the work and drivers to insert attaching fastenings in the pricked openings. In the machines above mentioned, these fastenings ar in l the form of fiber pegs, presented in inserting position by a movable loader-block I6. The drivers I4 are mounted upon a carrier, which may consist of a top-girt I8 bridged between side-rods 20,

reciprocating vertically in the frame and connected by a cross-girt 22. Power is applied to the cross-girt to reciprocate the carrier with the drivers through a crosshead 24, guided for vertical movement at opposite sides of the frame. The crosshead is actuated by a double cam 26, 26, rotated by a shaft 28 journaled horizontally in the frame, these cams engaging opposite rolls 30, 30 rotatable upon the crosshead. The shaft 28 is driven through an unillustrated single-rotation clutch controlled by the usual hand-lever. The cams, turning through 360 during an operating cycle of the machine, produce first a pricking reciprocation of the drivers I4, and then an inserting reciprocation. A shoe S, to which a heelportion H is to be attached, is supported upon a jack-post 32, movable horizontally on a bracket 34 between work-receiving and operating positions. The-bracket is reciprocated vertically in opposite guides in the frame to force the heelseat of the jacked shoe against the heel-portion, positioned at the underside of the die I2 by a holder 35, and to lower it for the reception of a shoe.

Taking up now the features peculiar to this invention, the jack-bracket 34 rests by gravity, partially counterbalanced by opposite springs 38, 38, upon a piston 48, movable vertically in a cylinder 42 supported at the front of the frame. Shown as formed integrally with the cylinder 42, and extending downwardly therefrom, is a cylinder 44 of smaller diameter, in which is a piston 46. The two cylinders communicate with each other through a port 48, controlled by a checkvalve openin upwardly. Rotatable upon the bottom of the piston 46 is a roll 52, resting upon the periphery of a cam 64 fast upon the shaft 28. A spring 56, interposed between the piston 46 and the head of the cylinder 44, maintains the roll in contactwith the cam.

Mounted at the bottom of the frame is a vertical cylinder 60, in which a piston 62 is movable. Joined to the top of this piston at 64, and guided at opposite sides in the frame, is a slide 68, from the front of which projects a treadle I0. The piston and treadle are held normally raised by a tension-spring I2. As appears in the diagram of Fig. 3, conduits I4 and I6, connected to the cylinder at points normally just below the piston 62, lead, respectively, to the bottom of the upper jack-cylinder 42 and to a supply-tank I8 for oil or other fluid to be employed as the pressuretransmitting medium. From the lower portion of the treadle-cylinder 60, conduits and 82 are joined, respectively, to the top of the lower jackcylinder 44 and to the tank I8 by way, in part, of the conduit 16. Beside the treadle-cylinder is a vertical cylinder 84, in which is a piston 86 normally raised by a tension-spring 88. At the upper extremity of the rod on this piston is a, head 90, by engagement with which the treadle-piston 62 may be latched down against the elevatin force of its spring I2. Extending beneath the head is a latch 62, movable horizontally through the upper end of the treadle-slide 68, it being held yieldably in its active position by a tensionspring 94. Lying at the rear of a depending portion 96 of the latch 92 is the upper extremity of a releasing lever 98, fulcrumed upon the treadleslide 68 and which may be actuated through a foot-pad I60. Above the piston 86, the cylinder 84 is connected with the conduit 80 at I02. In the conduit 80, between the connection I02 and the cylinder 44, is a check-valve I04 opening toward the cylinder. A check-valve I86 in the conduit 82 opens toward the cylinder 60. The conduit 00 is joined to the conduit I6 through a relief-valve I68, opening toward the latter conduit.

. It is set to blow off to the tank 18 when pressure in the jack-cylinder 44, created by movement of the piston 46, exceeds the desired amount.

To elevate the jack 32 with the applied shoe to operating position beneath the die I2, the operator depresses the treadle I0, lowering the piston 62 in its cylinder. The conduits I6 and 14 are at once closed by the piston, and this, acting through the fluid filling the system from the tank I8, creates pressure through the conduit 80, the conduit 82 being closed by the check-valve I06. This pressure is applied to the jack-cylinder 44 and through the open check-valve 50 to the cylinder 42 beneath the piston 48, which has been lowered by its weight and that of the jack elements which it supports. The piston and jack are thereby lifted to the operating position of the latter, the jacked shoe-exerting upon the heelportion held beneath the die a relatively light pressure which permits the work to be adjusted by the operator. As the piston 62 descends to create the jack-elevating force through the conduit 80, the pressure is simultaneously applied to the cylinder 84 through the connection I02 above the piston 86. Therefore, this piston is lowered, and the head 90 is maintained in its retaining position in contact with the latch 92. On both sides of the connection I82 the conduit 80 is closed against the escape of pressure, so the piston 86 cannot rise. The operator starts the power-cycle of the machine, and the cam 54 is rotated in the direction of the arrow in Fig. 4. A sharp rise at IIO upon the cam quickly elevates the piston 46. This produces pressure in the cylinder 44, which is communicated past the check-valve 50 to the cylinder 42, and this, transmitted to the jack, produces a relatively heavy clamping pressure upon the work, to the degree allowed by the relief-valve I08 and retained by the check-valve I04. The periphery II2 of the cam may have a slight, gradually increasing radius to maintain this pressure, if there are leaks in the system past the pistons. Because of the check-valve 50, the pressure which has been created in the cylinder 42 by the piston 46 is temporarily locked therein. This prevents the possible forcing away of the Work from the die I2, if the drivers I4 in their action encounter a resistance, say that offered by an unusually hard heel, which produces a momentary back-pressure greater than that for which the relief-valve I08 is set.

7 As the operating cycle approaches its termination, the abrupt return of the periphery of the cam 54 at II4 to its minimum radius allows the spring 56 to lower the piston 46 to its initial position. This lowering of the piston causes suction in the conduit 80, opening the check-valve I04 and withdrawing fluid from the latching cylinder 84, so the piston 86 is lifted by the spring 88. The rising of the head 90 permits the latch 92 to move with it, so the piston 62 and the treadle 10 are restored to normal by the spring.

12. To avoid resistance to this movement by the creation of a Vacuum in the cylinder 60, fluid is admitted from the tank 18, through the conduits 16 and 82 and the check-valve I06. As the piston 62 approaches the end of its upward travel, it opens the conduits 14 and 16 and through these the fluid flows from the cylinder 42 to the tank, the piston 40 and jack 32 falling to their normal positions. If, before starting the power-cycle of the machine, the operator wishes to free the work which has been clamped by the depression of the treadle, he actuates the releasing lever 98. This withdraws the latch 92 from the head 90, so the spring 12 is free to lift the piston 62 and the treadle 10, as just indicated. The latching piston 86 is at the same time lifted by its spring 88. Pressure is removed from the cylinders 42 and 84, so the jack falls and the latching piston 86 rises.

The shoe S, which the illustrated machine is especially designed to operate upon, is carried by a last L, in which is a passage 1 extending from the crown of the last-cone to the usual heel-plate m. In jacking the work, the passage Z receives a pin I I projecting from the top-plate or last-bed-piece H2 of the jack 32. The plate is preferably mounted upon the jack by a balland-socket joint II4, which gives a capacity for universal oscillation of the pin IIO to allow the heel-seat of the shoe to correctly engage the heel or heel-portion H, carried in the holder 35 upon the die I2. The top-plate H2 is held in place upon the jack, so it may readily be removed and replaced, by spring retaining fingers II8 extending from the plate beneath a curved surface I20 upon a slide I22 mounted in ways I24 upon the jack, so it may be moved transversely and the work located in this direction with respect to the heel. Movable in the formed together upon a hub, I54 (Fig. 2),, from which project spaced lugs I56, I56. Through these lugs are threaded screws I58, I58, the inner ends of the screws engaging opposite sides of a lug I60 formed with that portion of the lever which has the arm I46. By backing off one screw and setting up the other, the normal angular position of the lever-arms I50 and I52 may be varied without disturbing the geared portion of thelever I48.

At the rear of the crosshead 24 is a vertical cylinder I66 (Fig. 5) containing such a fluid as oil, and in which a piston I 68 is movable, this piston having at its lower portion a chamber I10 from which a passage I12 extends upwardly. Through the passage and chamber, a rod I14 passes, carrying at its lower extremity a valve I16 forced against a seat I18 at the bottom of the chamber I10 by an expansion-spring I80, interposed between the piston and a shoulder upon the rod. Above the upper end of the rod extends the arm I52 of the lever I48, so, if this arm is depressed against the force of a tension-spring I82 which normally lifts it, it will lower the rod and sepaate the valve I16 from its seat, to the extent that therod is moved. To effect this depression, there is,linked' at I84 (Fig. 1) to the arm I50 a piston I86 movable in a cylinder I88 mounted upon the frame.

Arranged for horizontal reciprocation in ways I90upon an upward extension I 92 from the crosshead 24 is a slide I94, the outer end of which has a downwardly and inwardly inclined surface I96. This surface is drawn by tension-springs I98 against a complemental surface 200 upon the upper extremity of the piston I68. At the underside of the slide is a downwardly and outwardly inclined surface 202, arranged for engagement with a complemental surface 204 upon the crossgirt 22. Links 206 hung at opposite sides of the crosshead-extension I92 have vertical slots to receive projections 208 from the cross-girt. Mounted for vertical reciprocation in the crosshead is a retaining plunger 2I 0, having at its top a projection 2I2 entering a slot 2I4 in the piston I68. The plunger is positioned by a roll 2| 6 lying in a cam-groove 2I8 in the outer face of the rear cam 26, and rotatable upon an arm 220 pivoted upon the crosshead and upon which the plunger rests (Fig. 1)

At the beginning of an operating cycle, the cam-groove 2I8 holds the plunger 2I0 raised, its projection 2I2 retaining the piston I68 elevated. This, by engagement of the surfaces 200 and I96, forces back the slide I94, so its surface 202 is in contact with the cross-girt-surface 204. The

lever-arm I52 is raised by the spring I82, so the head being of considerable diameter and curved upon its underside to facilitate the oscillatory movement of said gage-pin. At its lower extremity, the rod I30 lies above the angular end of the generally horizontal arm I36 of a bellcrank-lever I38, having an upwardly extending arm I40 (Fig. 1), and fulcrumed upon the frame at one side of the rear of the jack 32. The rodengaging end of the arm I 36 passes through an opening I42 in the jack. Meshed gear-segments I44, I44 connect the lever-arm I40 to an arm I46 of a compound bell-crank-lever I48, fulcrumed upon the frame above th lever I38.

The lever- I48 has two other arms I50 and I52 rod I14 is freed to hold the valve I16 against its seat under the influence of the spring I80. When the operator treadles the machine to apply preliminary pressure to the jacked work by creating fluid-pressure in the conduit 80, the cylinder I88 receives the pressure through a conduit 230 joined Y to the conduit 80. Resulting movement of the piston I86 swings up the lever-arm I50 and, through the gearing I44, lifts the arm I36 and with it the jack-rod I30and gage-pin I26, until the latter is stopped by contact with the heel-plate l of the last L. The pin or feeler thus tests the position of the work, as furnished by the heelplate, and therefore of the inner surface of the insole of the shoe S, as this is held against the heel-plate by the clamping pressure. By this test, the lever-arm I52 i proportionately lowered, and contact with the valve-rod I14 depresses the valve I16, making a setting thereof in accordance with th test, which separates the valve a definite distance from its seat I18. When the operator has tripped the clutch of the machine to start an operating cycle, the cam-groove 2I8 at once draws down the retaining plunger 2 I and frees the piston I68. The springs I98 which urge the transmitting slide I94 against the upper end of the piston, cause this to descend, the fluid in the cylinder passing through the open port into the chamber I10. When the seat I18 reaches the valve, closing the port, a body of fluid is trapped in the cylinder below the valve, resisting further movement of the piston. With descent of the piston thus stopped, movement of the transmitting slide will be arrested in'a definite position corresponding to the feeler-movement and the valve-setting. The surface 202 of the slide is now separated from the surface 204 of the cross-girt by a predetermined space, and, when the cams 26 produce the pricking stroke of the drivers I4 during theearlier portion of the cycle, the crosshead-extension I92 carrying the slide will have a definite amount of lost-motion before the surfaces 202 and 204 contact. By properly proportioning the elements and by adjustment of the lever I48, this may cause the ends of the drivers I4 to advance into the desired relation to the outer surface of the heel-plate Z, as just through the insole. Thus, contact of the drivers with the heel-plate and its mutilation may be avoided. Upon the retraction of the drivers through the rise of th crosshead by the cams 26, upon completion of the pricking stroke, the camgroove 2I8 lifts the plunger 2I0. The projection 2I2 elevates the piston I68, forcing back the surface 202 of the slide I94 against the surface 204 of the cross-girt. The lower extremities of the slots in the links 206, which slots allowed the lostmotion of the crosshead, engage the projections 208 to fully lift the cross-girt with the side-rods, top-girt and drivers. As the rotation of the cams 26 continues for the production of the fasteninginserting stroke of the drivers, the descent of the crosshead finds the cross-girt ready to travel with it without lost-motion, because of the engagement of the surfaces 202 and 204. Therefore, the drivers descend solely under the control of the cams to insert the fastenings in the pricked openings, with their outer ends in the desired relation to the tread-surface of the heel. When the retrac-' tion of the treadle-piston 62 removes the pressure from the conduit 80, the lever-arm I52 is raised by the spring I82, freeing the rod I14. The spring I80 thereupon brings the valve I16 up against its seat I18, restoring the parts to normal,

To outline the general operation of th machine and the performance of the method of this invention, the operator, with the jack 32 drawn out upon the bracket 34, places the passage in a last L, upon which is a shoe S, over the pin IIO with the last-crown resting upon the topplate H2, and applies to the holder 35 a heel or heel-portion H to be attached, The jack-pin will contain a gage-pin or feeler I26, of such a length that for the work being operated upon its upper extremity will be spaced from the heelplate Z by a suitable distance through which to produce the work-testing movement. With the jack returned to operating position beneath the die-block I2, the operator depresses the treadle 10, the simultaneous lowering of the piston 62 applying fluid-pressure to the piston 40 to lift the heel-seat of the shoe against the heel. The latching .piston 86 is lowered by the fluid-pressure with the piston '62 to hold down the latter, to-

I shoe.

gether with the treadle. With the Work under the relatively light preliminary pressure, it may be adjusted to establish a correct relation between the heel-seat of the shoe and the heel in the holder. If, for any reason, the operator wishes to relieve the pressure upon the work, he depresses the foot-pad I00, this withdraws the latch 92 from the head of the latching piston 86. The treadle-piston is now free to be raised by its spring 12 and the piston 40 and jack 32 to fall by gravity. Simultaneously with the elevation of the piston 40 .by the hydraulic mechanism upon actuation of the treadle 10, pressure is applied to the cylinder I88. This elevates the gage-pin or feeler I26, until it contacts with the heel-plate l, determining its position and therefore that of any associated part of the work, as the inner surface of the insole of the jacked shoe, into a definite relation to which it is desired to advance the drivers I4. Through the connecting chain of elements, lever-arm I52 is moved against the stem or rod of the valve I16, to set it a corresponding distance from the seat I18 upon the piston I68, in accordance with the advance of the feeler. The work being thus clamped and measured, the operator actuates the starting lever of the machine to effect a single rotation of the shaft 28 with the cams 26and 54. The cam 54 promptly forces up the piston 46, applying fluid-pressure from the cylinder 44 through the check-valve 50 and cylinder 42 to the piston 40. Final clamping pressure is thus placed upon the work The dimensions of the cylinders 42 and 44, together with those of the associated cylinders, are such as to create in each instance the proper relative forces and rates of travel. The check-valve 50 temporarily locks the pressure in the cylinder 42, so a force exceeding that for which the relief-valve I08 is set, and exerted by the drivers I4, may be resisted. As the shaft 28 rotates, the cam-groove 2I8 releases the retaining plunger 2I0 and, therefore, the piston I68, and the transmitting slide I94 is carried by its springs through a distance dependent upon the valve-setting. By the resulting separation between the surfaces 202 and 204, a measured amount of lost-motion is created between the extension of the crosshead 24 and the cross-girt 22. The rotation of the cams 26 now causes the descent of the crosshead, and, when the space between the surfaces 202 and 204 is taken up, the cross-girt, with the connected siderods and the top-girt carrying the drivers or tools I4, are lowered. These drivers, acting as awls, prick the heel H and heel-seat of the shoe S to the chosen depth. Continued rotation of the cams 26 retracts the drivers, and the fastenings are brought over the passages in the die I2 by the loader-block I6. In preparation for the insertion of the fastenings in the pricked openings, the cam-groove 2I8 lifts the plunger 2H) and piston I68, so, as the cams 26 retract the drivers, said piston returns the slide I94 to its normal position with the surfaces 202 and 204 in engagement, the links 206 having raised the crossgirt with the cam-actuated crosshead. The final rotation of the cams 26 causes th second descent of the drivers I4, without reference to work-measurement, to insert the fastenings from the loader-block through the di into the pricked openings, whereupon said loader-block is retracted. The cam 54 releases the final-pressurepiston 46, and the jack 32 falls with the heeled The pressure in the fluid-system is thus relieved, and the latching piston 66 is raised by its spring allowing the treadle-piston 62 to be similarly raised. Removal of pressure from the cylinder I88 permits the feeler mechanism to be returned to normal. The operating cycle is now completed, and the jack may be drawn out, and the heeled shoe removed.

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

1. The combination with a support for work, of a movable tool for operating upon the supported work, a member-movable in the support after the application of the work thereto to test the position of said work, and means governed by the member for controlling the movement of the tOOl.

2. The combination with a jack for a shoe upon a last, of a movable tool for operating upon th jacked shoe, a position-testing member movable in the jack to make contact with said jacked shoe, and means governed by the member for controlling the movement of the tool.

3. The combination with a jack provided with a last-pin, of a movable tool for operating upon a jacked shoe, a position-testing member initially spaced from the end of the last-pin and movable in said last-pin, and means governed by the member for controllingthe movement of the tool. 7

4. The combination with a jack for a shoe upon a last in which is a passage, ofa movable tool for operating upon the shoe, a member movable in the last-passage after the application of the lasted shoe to the jack to test the position of said shoe, and means governed by the member for controlling. the movement of the tool.

5. The combination with a jack for a shoe upon -a last in which is a passage, of a movable tool for operating upon the jacked shoe, a member movable in thelast-passage into contact with a portion of the last, and means governed by the member for. controlling the movement of the tool. v,

6. Thecombination with ajackfor a shoe upon a last in which isa passage terminating at a heel-plate, of a movable tool for operating upon the jacked shoe, a member movable in the last-passage into contact with the heel-plate, and means governed by the member for controlling the movement of the tool. 7 V

'7. In a fastening-inserting machine, opposite members between which work is clamped, a movable tool for operating upon the work, a member movable to test the position of the clamped work, and means governed by the member for controlling the extent of movement of the tool.

8. In a fastening-inserting machine, fluidpressure actuatingmechanism, a movable tool for operating upon the work, means for clamping the work, a member movable by the fluidpressure mechanism to test the positionof the clamped work, and means governed by the member for controlling the extent of movement of the .tool.

9. In a fastening inserting machine, a work-. support, a tool co-operating with the ,support and movable to prick the work and .to drive fasteningsinto the pricked openings, a feeler movable in co-operation with the support, and means governed by the feeler for determining the extent of the pricking stroke of the tool.

10. In a fastening-inserting machine, a worksupport, a tool co-operating with the support and movable successively to prick the work and to drive fastenings into the pricked openings,

- fected.

11. In a fastening-inserting machine, clamping means for the work, a movable tool for operating upon the work, a movable actuating member for the tool, a member movabl to test the position of the clamped work, and means governed by the testing member for introducing into the movement of the actuating member a variable amount of lost-motion.

12. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, and fluid-controlling means governed by the member for determining the movement of the tool.

13. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, fluid-pressure means for thus moving the member, and means governed by the member for determining the movement of the tool.

14. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, a valve set by the member, and means governed by the setting of the valve to control the movement of the tool.

15. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, a stop positioned under the control of the member, actuating means for the tool, and a member positioned by the stop and through which the actuating means afiects the tool.

16. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, a stop set under the control of the member, actuating means for the tool, a member positioned by the stop and through which the actuating means affects the tool, a retaining member for the stop, and means for rendering the retaining member efiec'tive or ineifective.

17. The combination with a support for work, of a movable tool for operating upon the supported work, a member movable to test the position of the work, a valve set by the member, a stop positioned by the valve, actuating means for the tool, and a member urged yieldably into engagement with the stop and through which the actuating member affects the tool.

18. In a fastening-inserting machine, a worksupport, a tool co-operating with the support and movable successively to prick the work and to drive fastenings into the pricked openings, a feeler movable in co-operation with the support, a stop positioned under the control of the feeler, actuating means for the tool, a transmitting member positioned by the stop and through which the actuating means affects the tool during the pricking stroke, and means for removing the stop from the control of the feeler during the driving stroke of the tool.

19. In a fastening-inserting machine, a worksupport, a tool co-operating with the support and movable successively to prick thework and to drive fastenings into the pricked openings, a feeler movable in co-operation with the support,

a stop positioned under the control of the feeler, actuating means for the tool, a transmitting member positioned by the stop and through which the actuating means afiects the tool during the pricking stroke, a retaining member for the stop, and means acting during each operating cycle for moving the retaining member to effective and inefiective positions.

20. In a heel-attachin machine, a support for a shoe and heel, a feeler co-operating with the support, a member movable to operate upon the supported Work, means for producing engagement of the work by the feeler, and means governed by the feeler for controlling the movement of the member.

21. In a heel-attaching machine, a support for a shoe and heel, a feeler co-operating with the support, a reciprocatory fastening driver, and means governed by the feeler for controlling the extent of movement of the driver.

22. In a heel-attaching machine, a support for a shoe and heel, a feeler co-operating with the support, a tool for operating upon the work, a reciprocatory carrier for the tool, a reciprocatory actuating member for the carrier, and a member movable to different positions between the carrier and actuating member and controlled by the feeler.

23. In a heel-attaching machine, a support for a shoe and heel, a feeler co-operating with the support, a tool for operating upon the work, a reciprocatory carrier for the tool, a reciprocatory actuating member for the carrier, and a member movable to difierent positions between the carrier and actuating member and controlled by the feeler, there being interengaging inclined surfaces upon the member and carrier.

24. In a heel-attaching machine, a support for a shoe and heel, a feeler co-operating with the support, a tool for operating upon the Work, a reciprocatory carrier for the tool, a reciprocatory actuating member for the carrier, a member movable to different positions between the carrier and actuating member, a cylinder, a piston movable in the cylinder and furnishing a stop for the member, and a valve positioned by the feeler and controlling the movement of the piston.

25. In a heel-attaching machine, a support for a shoe and heel, a feeler co-operating with the support, a tool for operating upon the work, a reciprocatory carrier for the tool, a reciprocatory actuating member for the carrier, a member movable to different positions between the carrier and actuating member, a cylinder, a piston movable in the cylinder and furnishing a stop for the member, a valve positioned by the feeler and controlling the movement of the piston, and a retaining member for the piston made effective under the power of the machine.

26. In a heel-attaching machine, fluid-pressure actuating mechanism, a jack, a feeler movable in the jack by the fluid-pressure mechanism, a movable tool for operating upon the work, and means governed by the feeler' for controlling the movement of the tool.

27. In a fastening-inserting machine, opposite members between which work is clamped, fluidpressure mechanism through which the clamping members are actuated, a movable tool for operating upon the work, a feeler movable by the fluidpressure mechanism, and means governed by the feeler for controlling the movement of the tool.

28. In a heel-attaching machine, a support for a shoe and heel, a tool movable to act upon the work, a feeler movable to test the position of the work, a cylinder, a piston movable therein, lever feeler, and means governed by the feeler for controlling the movement of the tool.

29. In a fastening-inserting machine, fastening-inserting mechanism, a jack with which the inserting mechanism co-operates, said jack being provided with a last-pin, a feeler moveable through the last-pin, means for moving the feeler in the 1ast pin, and means governed by the feeler for controlling the inserting mechanism.

30. In a fastening-inserting machine, fastening-inserting mechanism, a jack with which the inserting mechanism co-operates, said jack being provided with an oscillatory last-bed-piece separable therefrom and having a projecting lastpin, and a work-engaging ieeler movable in the last-pin and separable therewith from the jack.

31. In a fastening-inserting machine, fastening-inserting mechanism, a jack with which the inserting mechanism co-operates, said jack being provided with a last-bed-piece having a projecting last-pin, there being a universal joint between the bed-piece and the jack, and a retaining member projecting from the bed-piece over the jack.

32. In a fastening-inserting machine, fastening-inserting mechanism, a jack with which the inserting mechanism co-operates, said jack being provided with a last-bed-piece having a projecting last-pin, there being a universal joint between the bed-piece and the jack, and springfingers projecting from the bed-piece over the jack.

33. The method of operating upon the heelportions of shoes, which consists in jacking a shoe, testing the position of the shoe upon the jack, and advancing a tool to operate upon the shoe to an extent determined by the test.

34. The method of operating upon the heelportions of shoes, which consists in jacking a shoe, testing through the jack the position of the shoe, advancing a fastening-driver to prick the work to an extent determined by the test, delivering a fastening to the pricked opening, and again advancing the driver to insert the. fastening in the opening.

35. In a fastening-inserting machine, opposite relatively movable members between which the work is held for the operation upon it, means movable by the operator to produce fluid-pressure and thereby effect engagement of the members with the work, and fluid-pressure-actuated retaining means for the operator-moved means.

36. In a fastening-inserting machine, opposite relatively movable members between which the work is held for the operation upon it, means movable by the operator to produce fluid-pressure and thereby effect engagement of the members with the work, and means acting under the power of the machine to increase the fluid-pressure.

37. In a fastening-inserting machine, fastening-inserting mechanism, a member movable to clamp the work for the operation upon it, a cooperating cylinder and piston, one of which acts upon the clamping member, a second cylinder and piston, one of which is movable by the operator, means for transmitting fluid-pressure between the cylinders, a cylinder communicating with the clamping cylinder, and a piston moving in said communicating cylinder under the power of the machine.

38. In a fastening-inserting machine, fastening-inserting mechanism, a member movable to clamp the work for the operation upon it, a cooperating cylinder and piston, one of which acts upon the clamping member, a second cylinder and piston, one of which is movable by the operator, means for transmitting fluid-pressure between the cylinders, a cylinder communicating with the clamping cylinder, a piston moving in said communicating cylinder under the power of the machine, and a check-valve between the communicating cylinders.

39. In a fastening-inserting machine, fastening-inserting mechanism, a member movable to hold the work for the operation upon it, a cooperating cylinder and piston, one of which acts upon the work-holding member, a second cylinder and piston, one of which is movable by the operator, means for transmitting fluid-pressure between the cylinders, and a latching cylinder as moved by the operator and receiving the fluidpressure, and a member movable by the operator to release the latch.

41. In a fastening-inserting machine, fastening-inserting mechanism, a member movable to clamp the work for the operation upon it, opposite communicating cylinders, a piston movable in one cylinder for acting upon the clamping member, a piston movable in the other cylinder, means for moving the second piston under the power of the machine, a third cylinder, a piston movable in said third cylinder, a treadle through which the last-mentioned piston is moved by the operator, and means for transmitting fluid-pressure between the last-mentioned cylinder and the communicating cylinders.

42. In a fastening-inserting machine, fastening-inserting mechanism, a-member movable to clamp the work for the operation upon it, opposite communicating cylinders, a piston movable in one cylinder for acting upon the clamping member, a piston movable in the other cylinder, means for moving the second piston under the power of the machine, a third cylinder, a piston movable in said third cylinder, a treadle through which-the last-mentioned piston is moved by the operator, means for transmitting fluid-pressure between the last-mentioned cylinder and the communicating cylinders, and a check-valve between the communicating cylinders, said valve opening toward the work-clamping member.

FRANK E. STRA'I'TON.

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