US1030654A

US1030654A - Nailing-machine.

Info

Publication number: US1030654A
Application number: US68662212A
Authority: US
Inventors: Alvin D Elliott
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1912-03-27
Filing date: 1912-03-27
Publication date: 1912-06-25
Anticipated expiration: 1929-06-25

Description

A. 1); ELLIOTT.

NAILING MACHINE.

APPLICATION FILED MAR. 13, 1902. RENEWED MAR. 27, 1912.

Patented June 25, 1912.

4 SHEETS-SHEET 1.

Jar/3% v 4 aya COLUMBIA PLANOURAPH cc. WASHINGTON. D. c.

A. 1). ELLIOTT.

NAILING moms.

APPLICATION FILED MAR. 13, 1902. RENEWED MAB 27, 1912. 1,030,654, Patented June 25, 1912.

4 SHEETS-SHEET 2.

COLUMBIA PLQNOBRAPH c0., WASHINGTON, D. c.

A. D. ELLIOTT.

NAILING MACHINE.

. APPLICATION FILED Mums, 1902. RENEWED MAR. 27. 1912. 1,030,654.

Patented June 25, 19,12,

4 sums-sun s.

COLUMBIA PLANOGRAPII c0..wAs|nNGTON. u c.

A. D. ELLIOTT.

NAILING MACHINE.

APPLICATION FILED MAR. 13, 1902. RENEWED MAR. 27, 1912. 1,030 654 Patented June 25, 1912.

4 SHEETS-SHEET 4.

COLUMBIA PLANOORAPH C0..\VASHINGTON, I:v c.

AES PA ALVIN D. ELLIOTT, OF LAWRENCE, MASSACHUSETTS, ASSIG-NOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

NAILING-MAoHINE.

Patented June 25, 1912.

Application filed March 13, 1902, Serial No. 98,071. Renewed March 27, 1912. Serial No. 686,622.

To all whom, it may concern:

Be it known that I, ALVIN D. ELLIOTT, a citizen of the United States, residing at Lawrence, county of Essex, State of Massachusetts, have invented an Improvement'in Nailing-h/Iachines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to heel attaching machines and is shown embodied in a machine for attaching heels to shoes and for thereafter securing top lifts to the attached heels.

The invention contemplates more particularly the improvement of heel attaching machines of the type in which there is pro vision for automatically pressing a heel upon a shoe, for securing the heel to the shoe and for automatically pressing a top lift upon the attached heel.

It is an important object of the invention to provide a machine of this class adapted to secure a heel and a top lift to a shoe while mounted upon a last.

Where shoes are heeled on wooden lasts, there is considerable liability of the pressure to which the last is subjected in this operation being so great as to fracture the last.

To avoid this occurrence, the present invention contemplates the provision of a heel attaching machine in which the pressure applied to the last in the heel attaching or top lift attaching operations shall never exceed a certain maximum. I11 attaching a heel or a top lift, the parts pressed upon a last are subject to variations both in thickness and density. Moreover, there is some liability of variation in the height of the lastitself. In heel attaching machines now in use, variations such as those mentioned occasion variations in the pressure to which the last is subjected. In the use of such prior machines, an increase in thickness or in density of the parts is, at times, suflicient to occasion such an excessive pressure as to cause the last to be broken.

To avoid this defect, an important feature of the present invention consists in the provision of mechanism for pressing a heel upon a shoe carried by a last with a pressure which shall not exceed a predetermined maximum regardless of the thickness or the density of the parts.

While the invention contemplates the use of any suitable mechanism adapted to insure that the maximum pressure to which the last may be subjected shall be determined independently of the thickness or the density of the parts, it ispreferred that the arrangement be such that said maximum pressure applied through said parts to the shoe support may be of a predetermined measured amount. In the present machine said pressure is measured by the tension of an elastic member, such as a spring, the pressure applied being limited to the amount required to produce a predetermined amount of tension in said member.

In attaching top lifts to attached heels by means of machines now in use, there is even greater liability of subjecting the last to an excessive pressure than is present in the operation of attaching the heels. It will be seen that after a heel is attached, the heel and shoe being firmly secured together constitute a firm support to resist the pressure applied to the top lift and there is less capacity for yielding than is present in the operation of securing the heel.

A further important feature of the invention accordingly consists in the provision of mechanism for pressing a top lift upon a heel with a pressure which shall not exceed a predetermined maximum regardless of the thickness or the density of the lift. As in the operation of attaching a heel, the maximum pressure which may be applied to the top lift is preferably of a measured amount.

The condition of the parts in attaching a heel is quite different from that in attaching a top lift and it may be desirable, for this reason, to employ a greater pressure in attaching a heel than in securing a top lift to the attached heel. The arrangement is preferably such, therefore, that the limits of pressures in the heel attaching operation and the top lift attaching operation, respectively, may be different in amount.

In the machine herein shown, there is provided a shoe support and a nail block arthe operation of the machine the extent of preliminary movement of the shoe support varies in accordance with 'the thiclmess -of the parts lying between the nail block and the shoe support, and the face of the heel at the time when the work support is arrested and compression commences is in a predetermined plane regardless of its height. The pressure applied'to the heel is measured bythe tension produced in the elastic mem-.

her, and this tension can never exceed that produced by a fixed amount-of movement of the actuating mechanismfor the nail block.

The machine in which the present invention is herein shown as embodied comprises among its parts a shoe-holder and a nailblock, together with means for changing the relative positions of said parts whereby the heel sustained by the nail-block is brought into contact with the sole of the shoe.

Thereafter during the further operation ofthe machine one of said parts, viz :-the shoe-holder in the instance herein shown, occupies a fixed position while the other, viz :the -nail-block, rises and the driverhead. and drivers with which the machine is provided also rise, moving at a more rapid rate than the nail-block, whereby they act on the nails in the block to drive them therefrom into the heel'and sole. The nail-block moving with the driver-head and drivers, although at a slower speed, may be made to compress the heel to any desired predetermined extent.

In'the embodiment of the invention herein shown the nail-block is located below the shoe-holder and is raised to bring the heel supported thereon into contact with the sole of the shoe, the shoe-holder being free to rise with the nail-block during the first part of the operation of the machine after the heel has contacted with the shoe. Thereafter the shoe-holder is locked against further movement and the heel is compressed by the continued upward movement of the nail-block, while the nails are being driven. The degree of compression imparted to the heel is varied by arresting the shoe-holder sooner or later with relation to the stroke of the nail-block.

'F or applying the top-lift to the heel the operation of the machine is the same as for attaching the heel to the shoe, but as there are'no nails supplied to the nail-block the operation of the drivers is ineffective. While applying the top-lift the pressure exerted upon the stock will preferably differ from the pressure exerted when attaching the heel to the shoe. Itis to be understood, however, that this invention is'not limited to a machine in which the shoeeholder is stopped to insure a predetermined limit of pressure but the invention is broad enough to cover a machine in which the heel is compressed by a movement of the shoe-holder toward a nail-block which is held stationary or approximately stationary, and consequently by the term change in the relative positions of the shoe-holder and nail-block as used herein it is intended to cover broadly a relative movement between said shoeholder and nail-block.

I have made provision, by arresting the shoe-holder sooner or later wlth relation to the rise of the nail-block, for compressing the stock of the heel'to any predetermined degree while attaching the heel and also for compressing the heel and'top-lift to any predetermined degree while attaching a top-lift to the heel, and these pressures may and preferably will be difierent, the pressure applied during the heel-attaching operation being usually in excess of the pressure applied during the top-lift attaching opera tion. In the form in which I have herein chosen to illustrate my invention the drivers are carried by a driver-head connected with a die-bed spindle of usual'construction and actuated in usual manner. The nail-block is represented as carried by a nail-block head having guide rods extending through the driver-head and through springs contained in the spring sustainers supported by said driver-head, the springs sustaining the nailblock head in a yielding manner. The spring sustainers move with the driver-head so that as the die-bed spindle is started, preparatory to driving nails, the nail-block on which the heel rests carries the heel against the sole of the shoe in the shoeholder and thereafter the shoe-holder moves wit-h the driver-head and nail-block for a short period and then its movement is arrested. After the shoe-holder is arrested the nail-block and driver head continue to move in the same direction, but the nailblock sustaining springs yield to permit the driver-head to move farther than the nailblock for driving the nails to attach the heel at the same time that it is being compressed.

The machine herein described has a nailblock and a foot-plate to provide for any required nailing of any sized heel, and to provide for a change of nailing and so utilize more or less of the holes in the nailblock and foot-plate, I have provided a device-called a mug, which has a series of holes arranged in accordance with the particular nailingdesired, the holes in the mug when in working position corresponding in location with some but not with all of the holes in the'foot-plate, and by a change of mug, and a change of loader-plate which is fitted to the usual loader-block in a loadercarrier, any desired nailing may be readily provided for without dismembering the machine. The loader-carrier herein to be described, which takes the nails from the mug and deposits them in the usual nail-block, is

supplied with nails only when said carrier with its loader-plate is in its nail-receiving position underneath the mug, and to provide that the nails shall be discharged automatically from usual nail-assorting mechanism such for instance as shown in United States Patent No. 694,656, dated March 4, 1902, I have provided herein a rod mounted in bearings and having at its lower end a device which as the loadencarrier having received nails is moved to give up nails to the nailblock, meets and turns said device but does not lift the rod. hen, however, said loader-carrier is being returned to nail-receiving position, it meets said device and lifts the rod, thus starting automatically into movement the nail-assorting mechanism that it may deliver a series of nails in usual manner to the foot-plate and mug. The band-clamp to embrace the heel end of the shoe is also of novel construction, as will be hereinafter described.

F igure 1 in front elevation represents a sufficient port-ion of a heel nailing machine of usual construction with my improvements added to enable my invention to be understood, the chief part of the shoe-holder be ing omitted by breaking off the major part thereof; Fig. 1 shows the nail block carrier and nail block; Fig. 2 is a section below the line 00, Fig. 1; Fig. 2 a sectional detail in the dotted line :11, Fig. 2; Fig. 3 is an enlarged detail showing among other things the mug, part of the framework, the shoe clamp, the loader, and the foot-plate having connected with it nail conducting tubes; Fig. 3 is a detail to be described; Fig. 4 is a plan view of the parts shown in Fig. 8, the foot-plate being partly broken out; Fig. 5 shows a bushing detached; Fig. 6 is a side elevation of the machine shown in Fig. l, chiefly to show the means for locking the shoe holder to insure any predetermined extent of pressure, the shoe clamp, mug, loader, loader-carrier and other parts being omitted; Fig. 7 is a detail showing the clutch-box and clutch therein in section, together with the lower end of the leg connected with the walking beam; Fig. 8 is a detail looking into the open end of the clutch box; Fig. 9 is a detail looking at the clutchbox from the right of Fig. 6; Fig. 9 is a perspective view'with parts broken away showing details of construction of the clutch box; Fig. 10 is a plan View of the clutchbox and itscontained parts below the dotted line m, the screw being omitted, said view also showing means for moving the pres sure-lever; Fig. 11 is a top view of the pressure-lever; Fig. 12 shows two views of the pressure-plate employed in the clutch; Figs. 13 and 13 show each two views of the washers or plates employed in the clutch; Fig. 14 is a side elevation showing the actuators for controlling the extent of pressure upon the heel and upon the topdift; Fig. 15 is a detail showing the hub carrying the actuator in section and mounted on the main shaft, together with part of a cam and a locking device cont-rolled thereby; and Fig. 16 is a side elevation of the cam which controls the locking device.

A indicates the framework, and B a die bed spindle guided therein and deriving its movement from a toggle C, D, moved by a strap or link A actuated by a crank on a shaft A provided with a balance-wheel B, adapted to run loose thereon except when clutched to said shaft by the operator putting his foot upon a starting treadle of usual construction, but not shown, the movement of the treadle eifecting the clutching of the balance-wheel to the shaft, the removal of the foot from the treadle enabling the balance wheel to be freed and the rotation of the shaft to be stopped. E rep resents a spindle having at its lower end a guideway F to receive a suitable carriage G having connected therewith a jack or shoeholder H, only partially shown in Fig. 1, it being of usual shape to sustain a last C, shown only in Fig. 6, which may be the original last over which the shoe was formed, and may consist of wood or any other usual material. B is a walkingbeam pivoted at B on the top of the framework A and joined at B with the upper part of the spindle E. B is a hand-wheel for adjusting the length of the spindle E to adapt it to the height of heel being attached, and J is a plate for supporting a heelclasp, said plate being adjustable horizontally to position the clasp for holding the shoe in proper position to receive the nails driven through the heel into the shoe sole. These parts are and may be all as common in heel-nailing machines now in use.

The machine herein illustrated has a projecting arm L see Fig. 3 in which is clamped a rod M extended upwardly through a second arm N. The machine has also a rod 0 clamped in a bearing P. The rod 0 is surrounded loosely by one end of a loader-car'- rier R having at its underside a gate S which is locked in its operative position by means of a stud T entering a hole in a lug S of the gate which is preferably made to yield somewhat vertically. The gate has coacting with it a spring U, see Fig. 4, which serves to open the gate on the arrival see Fig. 8, which are entered low it and enter the depressions l of the loader-carrier in position to discharge nails from the usual loader-plate of the loader-carrier into the holes in :the nailblock a*, as provided for in United States Letters Patent No. 694656, so need not be described more fully herein, that patent also showing the starting treadle which is omitted from the accompanying drawing.

I will now particularly describe the invention to be herein claimed.

The lower end of the leg H connected to the walking-beam at B is split and receives a nut H which is clamped therein by a suitable clamp-screw H The leg H has a hole H in which may enter the upper end of a screw H of very quick pitch, the head H of said screw, see Fig. 7 resting against the bottom of a clutch box 'H secured to the framework A by screws H The head H of the screw is internally screw-threaded to receive the threaded end of a bolt H which passes loosely through the bottom of the clutch-box. The bolt H prevents any longitudinal movement of the screw ll-I yet permits the latter toturn as it is revolved in the clutch-box, as will be described. The head H of the screw H preferably rectangular in cross section but which may be of any other shape except circular, is surrounded by washers or plates D, see Figs. 7 and 13, the central openings of which fit the contour of the head of the screw so as to rotate therewith.

The'clutch-box has a series of notches D, by ears D forming part of non-rotative washers D see Fig. 13, the washers D and D being interspersed or arranged alternately in a stack, as represented in Fig. 7 The stack .of washers D, D is surmounted by a pressure-plate D see Fig. 12, provided at its upper side with an angular groove D to receive balls D and having ears D to enter the notches D. On top of the pressureplate D in the clutch-box, is a pressure-lever 3 having

arms

2, 3, and lower side with an annular groove to fit over balls D The upper side of the lever has pits 4 in which are located the lower ends of -clamping-struts 5, made in the form of pins as shown in Figs. 6 and 10. The upper ends of the struts 5 abut against adjustable screws 6, see Fig. 10, which are carried in ears 7 projecting from a cap-block 8 conlnected with a clutch-box by screws 10. The

cap-block which is shown in top view, in Fig. 10, and in section in Fig. 7, has its inner edge notched, as at 82, so that the lower ends of the clamping-struts 5 may pass bein the clamping lever D The shaft A see Fig. 15, is surrounded near the end opposite to that which carries the fly-wheel B with a loose hub 13 composed of two similar plates held together by screws provided at its 14, see Fig. 14, the inner side of said plates having dove-tailed grooves which may be of the shape shown in Fig. 15. The said grooves receive the dove-tailed inner ends of two actuators 15'and 16 which are adjustable therein in a direction circumferential of the shaft A to occupy any desired position in the circumference of the shaft so as to meet, at any certain point in the rotation of the shaft, a lever which has connection with the pressure'lever, .bove described, for controlling the clutch composed of the plates D, D By properly adjusting the

actuators

15 and 16 they may be made to act on said lever sooner or later and cause any desired pressure to be applied to the heel while it is being attached to the shoe and then to the heel and top-lift while the top-lift is being attached to the heel, and this pressure may be exerted for a longer or shorter time during the period of the rotation of the shaft A as the conditions of the stock may require.

A locking device 17 for connecting the hub 13 to the shaft A is formed as an elbow lever pivoted at 18 to the shaft and having a horizontal arm movable into and out of a groove 19 in the shaft, see Fig. 15. The free end of said horizontal arm is acted upon by a spring 20 which holds the said arm normally in position to engage one or the other of two

notches

21 and 22 formed in the inner face of the hub 13. The hub 13 is restrained from movement toward the adjacent end of the shaft by a collar 23 held in position on the shaft by a screw 2 f. An arm 26 is secured at its lower end to the framework by a bolt 25, see Fig. 6, and has on the inner side at its upper end a face-cam 27, see Fig. 16. The cam 27 is secured in operative relation to the shaft A by a screw 28 which passes loosely through a hole'28 in the cam and enters a threaded hole in the end of the shaft. The outer end of the locking device 17 bears against the face-cam 27 which is so shaped as to turn said locking device during the rotation of the shaft, moving its inner end out of the notch in the hub 13,thereby releasing said hub and leaving it at rest during a portion of the revolution of the shaft. In the last portion of the rotation of the shaft the locking device 17 will be permitted to rengage the hub 13 at the other notch and cause the hub and the

actuators

15 and 16 to be moved with the shaft during the completion of that rotation of the shaft. In this way two rotations of the shaft make one full rotation of the hub 13 and the

actuators

15 and 16, one rotation of the shaft taking place while the heel is being attached and the other while thetoplift isbeing attached.

The clutch box H has depending from it an arm 29 having a hub or bearing 30 at its lower end which receives a stud 31. On the stud is mounted a lever 32 having a short arm 33 extended above the end 3 of the pressure-lever D, the lower end of said lever 32 having a toe 34L provided with a shoulder 35. The lever 32, which I may hereinafter designate as a connection, is acted upon by a spring 36 which tends to move the upper end 33 thereof toward the right in Fig. 6. The pressure-lever D is acted upon by a spring 37 which normally holds the pressure-lever turned in the direction opposite to the arrow in Fig. 10, thereby maintaining the struts 5 in an upright posit-ion and keeping the clutch plates D and D pressed together so that the clutch is closed. The spring 37 will be herein referred to as the clutch controlling means The actuator 16, before described, when brought into contact with the oanrshaped toe 34 of the connection 32 moves the upper end of said connection to the left, viewing Fig. 6, and causes the pressure-lever to be turned in opposition to the tension of the spring 37 in the direction of the arrow in Fig. 10 until it comes against a stop 39. This movement of the pressure-lever turns the struts 5 into an inclined position, therey releasing the pressure on the series of plates I) with relation to the series o plates D carried by the screw H and leaving the screw free to turn in the clutch-box. The parts of the machine are so timed that the pressure of the clutch-plate remains released and the screw is free to turn during the first part of the rise of the nail-block head and the driver-head hereinafter described. This allows the shoe-holder to rise reely after the heel ha been brought into contact with the shoe, the leg H at such time moving downwardly and rotating the screw H. When the actuator 16 passes the shoulder 35 of the cam-shaped too 34 in the rising movement of the nailblock carrier, the spring 36 immediately moves the connection 32 and enables the spring 37 to move the pressure lever in a direction opposite the arrow thereon, Fig. 10, thus moving the struts 5 into upright position again, and forcing the clutch plates D and D so firmly together that the further rotation of the screw H is instantly checked, and conse quently the further descent of the leg H is arrested, thus preventing any further movement of the jack or shoe holder H, and thereafter as the nail block head completes its ascent, the heel is compressed to the desired extent, or has given to it a pressure the amount of which is predetermined by the position of the actuator 16 in the hub 13. The actuator 16 may be adjusted in the hub so that it will retire from the toe 34 of the connection at any point in the rotation of the shaft A and by the adjustment of said actuator, the clutch in the clutch-box may be made effective to stop further rotation of the screw H and further movement of the jack or shoe-holder at any desired time during the upward movement of the nailblock head. The actuator 15 contacts with the connection 32 only when the die-bed spindle is rising to spank a top-lift onto the nails uniting the heel to the shoe, and by adjusting the actuator 15 in the hub 13, it will be obvious that it may be made to act and close the clutch, restraining the screw H from rotation at any desired point in the second rise of the die bed spindle, and cause the top-lift to be compressed either equally with the compression of the heel, or more or less as the stock used in the top-lift requires. In this way it will be readily seen that by the adjustment of the

actuators

16, 15, I may provide for any desired extent of pressure on the heel and on 'the toplift.

United States Patent No. 510,012, dated December 5, 1893, shows a screw connected with a leg attached to the rear end of the walking beam for moving the jack or shoeholder, and said screw .is controlled by a clutch, but in that machine there is no provision whatever for varying the pressure put upon the heel with relation to that put uponthe top-lift or vice-versa.

While I prefer to use a clutch composed of plates or washers interspersed as represented, yet this invention is not limited to the exact construction shown of the clutch, or of the actuators, or of the connection between the actuators and the clutch.

I believe that I am the first to employ in a machine of this character, mechanism for imparting during the toplift attaching operation, a degree of pressure different from that imparted in the heel-attaching operation, or mechanism for varying the amount of pressure imparted in the top-lift attaching operation irrespective of the amount of pressure imparted in the heelattaohing operation, and I desire to claim this invention broadly in whatever forms it may be embodied The rod or post M see Fig. 3 and also Fig. 4 has clamped upon it by a screw 6 the split hub o of a foot-plate (Z having a number of nail-holes 0 arranged therein to provide for any nailing required in attaching heels to boots and shoes. The foot-plate, as represented, is provided with a guideway, herein shown as a groove made longitudinally in its underside, and this guideway receives the top-plate f of what is here-' in designated as the mug, it consisting of said topplate, a bottom-plate a handle 72,, and preferably an upright wall The bottom-plate g has holes arranged correspondingly withthe holes in the top plate f of the mug, and these holes are united by suitable tubes preferably of spring-coils m, wound open to exhibit the nails. The holes in the top-plate of the mug may be made to correspond with the nailing desired, and e when the mug is inserted in the foot-plate plate to will correspond with the holes in the bottom of the mug. The top-plate of the mug has an inclined face a, see Figs.

3 and 4, and back of said inclined face is a hole 0, and'the foot plate is provided with a hole'in which is entered a pin 9 acted upon by a spring q, and arranged to enter the hole When the 0 for securing the mug in place. mug is inserted in the foot-plate, the inclined face n meets the pin, lifts it, and the spring g immediately causes the pin to enter the hole 0 as the latter comes-under the pin, and the mug is locked in its proper posit-ion.

The machine described has a rod 9" arranged to be actuated at times for setting a nail-assorting and delivering mechanism into operation. The rod is provided at its lower end with a device 8, shown as a cam pivoted thereon at t, and, see Fig; 3*, said device is so constructed that a projection w rising from the loader carrier B may meet the device 8 as the carrier is moved in the direction of the arrow on it in Fig. 4, and turn the device without lifting the rod 1. By this arrangement when the loader-carrier is being moved to carry nails previously supplied to it andput them in position to be discharged, into the holes in the nail-block, the rod 1* will not be operated, and consequently the nail-assorting mechanism will not deliver nails during such movement of the loader carrier. \Vhen, however, the loader carrier is moved in the opposite direction, that is from its nail discharging into its nail receiving position, the projection to meets the device 8 just as the loader carrier comes into its nail-receiving position, and lifts the rod 1", setti-ng in motion the nail assorting mechanism to deliver one series of nails to the tubes at extending from said nail asserting mechanism to the top-plate. United States Letters Patent No. 707,138, granted on the 19th day of August, 1902, shows a rod like the rod-'1" together with suitable means actuated by said rod to start into operation the nail-assort-ing mechanism.

-The die bed spindle B supports a drivercarrying head 5 having a suit-able recess as 0 in. which is placed a driver-plate cl, sustaining the lower ends of a series of drive-rs e.

The driver-carrying head has detachable pillow-blocks f which are connected with said head by screws 9. When these pillowblocks are removed the driver-carrying head I) has applied to it the upper end of springsustainers h, represented in Fig. 1 as loops having at their upper ends circular portions head 6 or bearings terminated by flanges 2", j, so that when said circular portions are inserted in the recesses at the ends of the head I) and the pillow-blocks are put in position, said spring-sustainers are connected with the to move therewith as the die-bed The spring-sustainers also constitute guides for rods m connected with the nail block head a. The rods m are provided with shoulders 0 below which the rods are reduced in diameter as at p. The lower ends of the rods are represented as passing through holes in the lower ends of the spring-sustainers, and receiving upon them nuts q. The nuts 9 actas stops to limit the upward movement of the rods and determine the position that the nail-block head shall occupy above or with relation to the drivercarrying head under the action of the springs T which rest on said sustainers. The springs surround the reduced portions 7) of the rods and act at their upper ends against the shoulders 0 of the said rods.

By the letter A, Fig. 1, I intend to indicate any usual device to hold a heel and a top-lift, said device moving vertically with the nail-block head and swinging to and fro to enable the heel held by the device to be put into position to have nails driven into it to attach it to the shoe, and then to present to the face of the nailed heel a top-lift, one device for this purpose being fully described in said Letters Patent of the United States, No. 694,656, granted March 4th, 1902. The driver-plate d rests on a sustaining plate 0 having a shoulder 0 which contacts with the front end of the driver-plate to keep itin position in the driver-carrying head. The rear end of the driver-plate straddles a pin 0 extended upwardly throughan ear b of the driver-head. The pin holds the plate (Z in place and is inserted through the ear after the platehas been put in place. The sustaining plate is inserted in the driver-carrying head in the direction of the arrow 2, and is locked in its operative position by a pin 0 inserted through said plate and a hole in an ear, shown by full lines Fig. 2 as extended from said head.

By withdrawing the sustaining-plate, the

spindle is operated.

driver-plate and its attached drivers may from, a yoke 0Z herein represented as substantially semicircular in shape and provided at its ends with two abut-ments. The yoke (Z is provided near its ends with pivot pins 7L upon which boxes which receive threaded rods 2' provided at the outer ends of said boxes with nuts k The rods 2' are jointed to the sides of a yielding sheet-metal clamp a adapted to embrace the heel end'of the shoe, then held on the last forming part of the shoeholder, and by adjusting the nuts 74 the clamp may be adapted to fit shoes and lasts which differ in width at the heel end thereof. The clamp a has extended backwardly from it a guide 5 Said guide enters a hole in a threaded bushing c adjustable in the yoke (Z an adjusting nut 72. being applied to said bushing so that the bushing, having at one end a screw-driver slot 71 may be turned to place the end of the bushing at just exactly the proper position to stop the inward movement of the clamp a When the heel portion of the shoe has been placed within the clamp a and the latter forced backwardly to meet the bushing in its adjusted position, the operator will turn the loader-carrier from its nail receiving into its nail-discharging position, to supply the nail-block with nails, and return the nail-carrier into its nail-receiving position. When the carrier is moved into nail-receiving position it will come in contact with the device 3 and thereby lift the rod 1" to start the nail-assorting mechanism and supply the loader-plate with nails, ready for the next nailing.

In. the operation of the machine shown, a heel having been placed in the usual heel holder mounted upon the nail block head, and a shoe having been placed upon the shoe holder H, the machine is started by actuating a suitable starting treadle, The movement of the main shaft A raises the spindle B and the nail block head a sustained by said spindle. In the first por tion of the upward movement of the spindle, the nail block head and driver-carrying head move together and the heel and the shoe are moved vertically, the screw H being unclutched at this time and consequently permitting upward movement of the shoe support I-I. It will be observed that the extent of upward movement imparted to the shoe support will vary in accordance with the thickness of the parts lying between said shoe support and the face of the nail block. At a predetermined point in the movement of the main shaft A said point being dependent upon the position of the actuator 16, the lever 32 is moved by the spring 36 to cause the screw H to be held from turning movement whereby the upward movement of the shoe support H is arrested. In the further are mounted swivel movement of the main shaft, the spindle B and driver-carrying head Z) continue to rise while the movement of the nail block head is resisted by the shoe and heel carried upon the shoe support. The vertical movement of the spindle has a predetermined limit, and the tension produced in the spring 1" is that caused by the movelnent of the spindle to this limit from the point where'upward movement of the shoe support is arrested. At the point in the operation of the machine at which the shoe support is held from further movement itwill be understood the heel is in contact with the heel seat of the shoe. It will be seen, therefore, that the maximum pressure which can be imparted to the heel, and which is determined by the tension of the springs 1", at the upper limit of movement of the spindle, is independent of the thickness and density of the stock held between the shoe support and the nail block. It

will be understood that in the upward movement of the nail block head and the driver-carrying head, while the heel is held under pressure upon the heel seat, the nails are driven by the drivers through the heel into the heel seat, the nail-driving operation being completed at the end of the first half revolution of the main shaft. In the latter half of the revolution of this shaft, the parts are returned to their original position, the screw H being released. A top lift having been interposed between the attached heel and the nail block, a second revolution of the main shaft is effected for the purpose of attaching said lift. The operation of the parts in attaching a top lift is similar to that above described in connection with the heel attaching operation. The pressure imparted to the top lift is represented by the amount of compression of the springs r and this compression is limited independently of the thickness or density of the lift. At the close of the operation of attaching the top lift, when the parts of the machine are in the position shown in Fig. 6, the screw H is unclutched so that the spindle E is free to be given vertical movement. It will be seen that in the upward movement of the nail block in pressing a heel or a top, lift upon the shoe, the pressure imparted by said block increases progressively in its movement, through the gradual compression of the springs r. The maximum pressure applied to a heel or top lift thus occurs at the end of the upward stroke of the die bed spindle B.

Having described my invention, what I claim as new and desire to secure by Letters Patent is Z 1. In a machine of the class described, mechanism for attaching a heel and for attaching a top-lift, said mechanism in said attaching operations imparting pressure to' the heel and to the top-lift, and means for regulating the amount of pressure imparted in the top-lift attaching operation irrespective of the amount of pressure imparted in the heel-attaching operation.

2. A heel attaching machine, having in combination, a shoe holder, a nail block,

combination, a movable shoe holder, a movable nail block, means to impart movement to said parts in the same direction, a screw connected with the shoe holder and a clutch cooperating with the screw to control the movement of said shoe holder and a plurality of devices for actuating said clutch arranged to permit the movements of the shoe holder during the operations of attaching a heel and a top lift to be independently controlled.

4. In a machine of the class described, a shoe holder, a nail block, means to drive nails from the nail block in attaching aheel to the sole of a shoe, means to change the relative positions of said shoe holder and nail block to clamp and release the stock while attaching both the heel to the shoe and the top lift to the heel, said means including a clutch, and automatic means co-acting therewith to arrest the movement of one of said parts at predetermined periods during successive clamping operations, thereby to effect a compression of the stock while attaching the heel, which is different in degree from the compression effected while attaching the top lift.

5. A machine for attaching heels, having in combination, means for supporting a shoe, means for pressing a heel upon the shoe and for thereafter pressing a top lift upon the attached heel arranged to limit the respective pressures employed in said operations independently of the thickness of the heel or top lift and constructed to permit 'ditferent limits of pressure to be provided for heel and top lift respectively. p

6. In a machine of the class described, a movable shoe holder adapted to sustain a last upon which is mounted the shoe tobe heeled, means acting first to force the heel against the shoe while driving nails therethrough to attach the heel to the sole of the shoe, and then to force the top lift against 7 the end of the attached heel, and means operating in succession to arrest the movement ofthe shoe holder at difierent periods during the heel-attaching and top liftattaching operations, thereby to exert different amounts of predetermined pressures, while attaching first the heel to the shoe and then the top lift to the heel.

7. In a machine of the class described, means for driving nails to attach a heel to a sole and spank a top lift to the heel, a shoe-holder, a nail block, a plurality of adjustable actuators and means governed thereby for controlling the relative position of said shoe holder and nail block when attaching a heel to the sole of a shoe and when securing a. top lift to a heel whereby a heel may be compressed to one degree, anda heel and top lift to another degree.

8. In a heeling machine, a movable holder for the shoe to which a heel is to be attached,

a nail block, and drivers, means for moving said parts in one direction to insure the forcing of the heel against the sole of the shoe, and thereafter the forcing of a top lift against the heel, two actuators, and means controlled'by one actuator to-lock and restrain at a. predetermined time the movement of the shoe holder while attaching a heel to insure a predetermined compression of the heel, said means being cont-rolledsby the other actuator to effecta different amount of compression of the top lift.

9. In a nailing machine, nail drivers, a nail block, means to move them, a shoe holder movable by the pressure against it of a heel sustained by the nail block, a rotatable shaft, means for arresting the movement of the shoe holder, a plurality of actuators carried by said shaft, means under the control of said actuatorsto render inoperative said arresting means, said actuators being adjustable to vary the time during the heelattaching operation that said arrest-ing means shall be operated to arrest the shoe holder, both when attaching a heel andthereafter when attaching a top liftto the heel.

10. In a heel nailing machine, nail drivers, a nail block, means to move the drivers to attach a heel to the sole of a shoe, a shoe holder movable by the pressure against it through a heel, a rotatable shaft, meansfor arresting the movement of the shoe holder, an adjustable actuator carried by said shaft, means under the control of said actuator to render said arresting means inoperative, the adjustment of said actuator controlling the time during the heel attaching operation that the shoe holder shall be arrested to provide for any predetermined compression of'the heel according to the requirement of the stock.

11. In a heel nailing machine, nail drivers, a nail block, means to move the drivers to attach a heel to the sole of a shoe, a shoe holder movable by the pressure against it through a heel, a rotatable shaft, means for arresting the movement of the shoe holder, a plurality of independently adjustable actuators carried by said shaft, means under the control of said actuators to render said arresting means inoperative at intervals in successive rotations of said shaft to vary the period of time in the operations of attaching a heel, and a top lift to the attached heel during which the shoe holder shall be arrested to thus provide for a predetermined compression first of the heel and then of the heel and top lift.

12. In a heel nailing machine, a nail block, a shoe holder, a rotatable shaft controlling the movement of said parts to force the heel against the sole during one rotation and force the top lift against the heel during another rotation, two actuators carried by said shaft, and means controlled by said actuatorsin succession to effect the compression of the heel and then of the heel and top lift each to a predetermined but difierent degree.

13. In a heel nailing machine, a nail block, a shoe holder, a rotatable shaft controlling the movement of said parts to force the heel against the sole, and then the top lift against the heel, two circularly adjustable successively operating actuators carried by said shaft, and means operated by said actuators to vary, according to their adjustment about the shaft, and effect the predetermined pressure of the heel and then of the heel and top lift during successive rotations of said shaft.

14. In a heel nailing machine, a nail block, a shoe holder, a rotatable shaft controlling the movement of said parts to force the heel against the sole, and to thereafter force a top lift against said heel, a collar surrounding said shaft loosely and provided with two achiators, a locking device to lock said collar to said shaft that it may move said collar, and means to release said locking device that the collar may remain at rest on the running shaft until again engaged by the locking device, the locking and releasing of the locking device enabling the collar and its actuators to be turned with relation to said shaft, said shaft rotating twice while the collars and actuators rotate once, and means controlled by said actuators for governing the respective amount of pressure applied to a heel and to a heel and top lift.

15. In a heel attaching machine, a rot-atable shaft, a die-bed spindle and a nail block deriving movement therefrom, a mov able shoe holder, a hub locked to said shaft, an actuator adjustable in said hub about the longitudinal aXis of said shaft, and means intermediate said actuator and shoe holder and under the control of said actuator to arrest the movement of the shoeholder during the upward movement of the nail block to thereby vary the degree of compression of the heel according to the requirements of the stock.

16. The combination with a movable shoe holder, and a screw connected therewith to revolve when the shoe holder is moved, said screw carrying a series of plates, of a series of stationary plates interspersed between the plates connected with said screw, and means to force said plates together to restrain the rotation of the screw and arrest the movement of the shoe holder.

17. The combination with a movable shoe holder, and a co-act-ing rotatable screw, of a clutch composed of a series of plates connected with said screw, and a series of stationary plates interspersed between the plates connected with said screw, a pressure-plate, a pressure-lever, means to move said lever, and devices between said pressure-plate and pressure-lever to cause the pressure-plate to force the plates of the clutch together and restrain the rotation of said screw and arrest further movement of the shoe holder.

18. The combination with a movable shoe holder, of a connected leg having a threaded nut, a screw entering said nut loosely and having a. head other than round, a clutchbox in which said screw is entered, said screw being rotatable in said clutch-box by pressure of stock against the shoe holder, a series of stationary plates in said clut-clrbox, a series of interspersed plates connected and to rotate with said screw, and means to force said plates together to lock and restrain rotation of said screw and consequently further movement of the shoe holder.

19. In a nailing machine, a driver-carrying head, a set of drivers, spring sustainers depending from said head, a nail block head, a nail block, rods extending from said nail block head and guided by said driver-carrying head, springs surrounding and supporting said rods and sustained by said spring sustainers, and means'to move said driver carrying head positively in attaching a heel to a sole, the nail block head deriving a yielding movement from said springs whereby the nail block mounted on the nail block head is adapted to compress and hold'the heel against the sole while the drivers act to drive nails contained in the nail block into the heel.

20. In a nailing machine, a die-bed spindle, means to move the same, a driver-carrying head on said spindle having detachable portions, a driver plate and drivers, spring sustainers having collars to enter and be held in the bearings of said head, springs supported at one end by said sustainers, a nail block head to sustain a nail block, shouldered guide rods connected with said nail block head and extended throughsaid collars, and springs, and means cooperating with said rods to limit the distance normally occupied by the nail block head from the c'lriver-carrying head, said springs supporting the nail block head yieldingly with relation to the driver-carrying head.

21. In a nailing machine, a foot-plate having a series of nail holes, and a guideway; combined with a mug having its nail holes arranged to correspond with some but not all the holes'of said plate, and shaped to engage said guideway.

22. In a nailing machine, a foot-plate having a series of nail holes, and a guideway, combined with a mug having its nail holes arranged to correspond with some but not all the holes of said plate, and shaped to engage said guideway, and locking means to lock said mug in its operative position.

23. In a nailing machine, a loader, a loader carrier, a slide rod operable to start the delivery of nails to the .loader, bearings for sustaining said rod and means carried by said loader carrier for reciprocating said slide rod as the loader carrier arrives in nailreceiving position.

24;; In a nailing machine, a driver-carrying head, combined with detachable spring sustainers seated and retained in position at the opposite ends of said head.

25. In a nailing machine, a band clalnp holder, provided with an adjustable stop, and a band clamp, the inner position of which is determined by the posit-ion of said stop in said holder.

26. In'a machine for attaching heels to soles, and top lifts to heels by successive operations, means for impart-ing a different degree of pressure to the stock while attaching a heel to the sole of a shoe, than to the heel and top lift while attaching a top lift to a heel, said means when acting to compress the heel and top lift: exerting the same degree of pressure on the heel and top lift during successive operations of attaching top lifts to heels whatever the variation in thickness of the top lifts.

27. In a machine of the class described, a band clamp having a connected guide, a band clamp holder having an adjustable stop entered by said guide, the stop determining the position of the back or central portion of the band clamp when attaching a heel.

28. In a machine of the class described the combination with mechanism for attaching a heel and for attaching a top lift, of means for controlling said mechanism constructed to limit the pressure imparted in the heel attaching and the top lift attaching operations to different amounts and arranged for automatically securing the same limit of pressure for successive heels of varying thickness. 7

29. In a machine of the class described, the combination with mechanism for attaching a heel and for attaching a top lift, of means for controlling said mechanism constructed to permit different degrees of pressure to be imparted in the heel attaching and the top lift attaching operations and arranged for automatically securing the same degree of pressure for successive top lifts of varying thickness.

30. In a machine of the class described, the combination with mechanism for attaching a heel and for attaching a top lift, of means for controlling said mechanism constructed to permit different degrees of pressure to be imparted in the heel attaching and the top lift attaching operations and arranged for automatically securing the same degree of pressure for successive heels of varying thickness and for automatically securing the same degree of pressure for successive top lifts of varying thickness.

31. In a machine of the class described, mechanism for attaching a heel and for attaching a top lift, said mechanism in said attaching operations imparting pressure to the heel and the top lift, and means for controlling said mechanism constructed to insure a different limit of pressure in the top lift attaching operation from that in the heel attaching operation.

32. In a machine of the class described, a shoe holder, a nail block, means for changing their relative positions in attaching a heel and then a top lift, and means to regulate to any predetermined degree the limit of pressure on both the heel and the top lift while attaching the heel and then the top lift, arranged to insure that the limit of pressure during the heel attaching operation will be different in degree from the limit of pressure during the top lift attaching operation.

33. A heel attaching machine, having in combination, a shoe support, a nail block, means for efiecting relativemovement of said devices to press a heel upon a shoe arranged to limit the pressure applied to said parts to a measured amount determined independently of the thickness or the density of the parts and constructed to insure the application to said parts of a progressively increasing pressure.

34:. A heel attaching machine, having in combination, a shoe support and means for pressing a top lift upon an attached heel arranged to limit the pressure applied to the top lift independently of the thickness or the density of the lift and constructed to apply to the lift a progressively increasing pressure.

35. A heel attaching machine, having in combination, a shoe support and means for pressing a top lift upon an attached heel arranged to limit the pressure applied to the top lift to a measured amount determined independently of the thickness or the density of the lift and construct-ed to apply to said lift a progressively increasing, pressure.

36. A heel attaching machine, having provision for acting over substantially the entire area of a heel in pressing it upon a shoe, comprising an abutment, an elastic member and means for producing tension in said member below a predetermined limit determined independently of the thickness or the density of the parts to be held under pressure and for transmitting to the abutment through the heel and the shoe the pressure required to produce said tenslon.

37. A heel attaching machine, having provision for securing a top lift to an attached heel by a single operation, comprising an abutment, an elastic member and means for producing tension in said member below a predetermined limit determined independ ently of the thickness or the density of the parts to be held under pressure and for transmitting to the abutment, through the top lift and the heel, the pressure required to produce said tension.

38. A heel attaching machine, having in combination, a shoe support and a nail block arranged for movement in the same direction, means for actuating the nail block constructed to have a fixed stroke of movement, means for arresting the shoe support at a predetermined point in said stroke, and means for yieldingly transmitting motion from said actuating means to the nail block whereby the pressure imparted by the nail block to the shoe and shoe support is measured by the extent of compression of said yielding means.

39. A heel attaching machine, having in combination, a shoe support, a nail block, means for effecting relative movement of said devices to press a heel upon a shoe, a rotatable shaft, means for arresting the movement of one of said devices, an adjustable actuator carried by said shaft, means under the control of said actuator to render said arresting means inoperative, the adjustment of said actuator controlling the time that the movement of said device is arrested to provide for any predetermined compression of the heel according to the requirement of the stock.

40. A heel attaching machine, having in combination, a shoe support, a nail block, and means for efiecting relative movement of said devices to press a heel upon a shoe arranged to limit the pressure applied to said parts to a measured amount determined independently of the resistance to compression and constructed to insure the application to said parts of a progressively increasing pressure.

41. A heel attaching machine, having in combination, a shoe support and means for pressing a top lift upon an attached heel arranged to limit the pressure applied to the top lift independently of the resistance to compression offered by the lift and constructed to apply to the lift a progressively lncreasing pressure.

42. A heel attaching machine, having in combination, a shoe support and means for pressing a top lift upon an attached heel arranged to limit the pressure-applied to the top lift to a measured amount determined independently of the resistance to compression offered by the lift and constructed to apply to said lift a progressively increasing pressure.

43. A heel attaching machine, having in combination, a shoe support, a nail block, and mechanism for effecting relative movement of said devices to press a heel upon a shoe arranged to limit the pressure applied to said parts to a predetermined amount and constructed to insure the application to said parts of a progressively increasing pressure, and means for determining the extent of such pressure independently of the resistance to compression, said means being arranged for manual adjustment.

44. A heel attaching machine, having in combination, a shoe support, and means for pressing a top lift upon an attached heel arranged to limit the pressure applied to the top lift to a predetermined amount and constructed to apply to the lift a progressively increasing pressure, and means for determining the extent of such pressure inclependently of the resistance to compression, said means being arranged for manual adjustment. p i

4.5. In a heel attaching machine, a work support, a nail block, means for moving the nail block toward the work support to attach a heel and for thereafter moving the nail block asecond time toward the support to attach a top lift, and means for regulating the pressure applied to the work in the top lift attaching operation independently of the pressure applied to the work in the heel attaching operation.

56. In a heel attaching machine, a work support, a nail block, means for moving the nail block toward the work support to attach a heel, and for thereafter moving the nail block a second time toward the support to attach a top lift, and pressure regulating means adjustable to permit a less degree of pressure to be applied in the top lift attaching operation than in the heel attaching operation.

47. In a heel attaching machine, the combination of a work support,a nail block, the work support being automatically adjustable in position in accordance with the thickness of the parts held between the work support and nail block, means for moving relatively the work support and nail block a uniform distance regardless of variations in thickness of said parts, means for driving nails in the work, and means for adjusting the amount of said relative movementof the work support and the nail block to vary the pressure applied to the work.

48. In a heel attaching machine, the combination of a nail block, a work support constructed for self adjustment to work of vari ous thicknesses held between the nail'block and work support, means for locking the Work support in adjusted position, means for moving relatively the nail block and work support a uniform distance regardless of variations in the thickness of said work, and means for adjusting the amount of said relative movement to vary the pressure applied to the work;

-19. I11 a heel attaching machine, the combination of a nail block, a jack movable to an adjusted position the location of which is dependent upon the thickness of the work, lockingmechanism for holding said jack positively in said adjusted position, toggle mechanism for moving the nail block toward the jack, and means for predeterminately varying the amount of relative movement between the jack and the nail block.

50. In a heel attaching machine, the combination with a reciprocating nail block, of

a work support movable in the line of movement of the nail block and arranged to be moved in one direction by pressure applied thereto through the work by the nail block and means for positively arresting move ment of the work support prior to the cessation of movement of the nail block whereby'a portion of the movement of said nail block is effective in exerting increased pres sure upon the work to compress the same, the proportion of the movement of the nail block which is eifective in exerting such increased pressure being controllable by preliminary adjustment.

51. In a heelattaching machine, the combination with a reciprocating nail block, of a work support movable in the line of movement of the nail block and arranged to yield through a limited distance less than that of movement of the nail block, in one direction, under pressure applied to said work support through the work by the nail block, and means to adjust preliminarily the limit to which said work support can yield.

52. In a heel attaching machine, the combination of a movable shoe support, a movable'nail block, means to impart movement to said parts in the same direction, a screw connected with the shoe support and means for stopping said screw and holding itstationary to stop movement of the shoe support, while allowing movement of the nail 6 0 block to continue.

In a heel attaching machine, the combination of a vertically yieldable shoe support. means for holding said support, a block for supporting a heel, said block being vertically movable in alinement with the shoe support, means f ormoving said block toward said shoe support, and manually operatedmeans for adjustably predetermining a point at which the yielding of the shoe support shall cease and it shall be positively held stationary.

54:. In a machine of the class described, the combination of a shoe support, means for pressing a heel upon'a shoe carried by said support with a predetermined amount of pressure, and controlling meansfor causing an abrupt increase in said pressure, said controlling means being capable of preliminary manual adjustment to vary the amount of said increase. 7

- In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALVIN D. ELLIOTT.

i \Vitnesses:

MARGARET A. DUNN, EDWARD F. ALLEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." i