US2261308A

US2261308A - Fastening-inserting machine

Info

Publication number: US2261308A
Application number: US317736A
Authority: US
Inventors: Frank E Stratton
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1940-02-07
Filing date: 1940-02-07
Publication date: 1941-11-04
Anticipated expiration: 1958-11-04

Description

Nov. 4, 1941. F. E. STRATTON 2,261,308

FASTENING-INSERTING MACHINE Filed Feb. 7, 1940, 4 Sheets-Sheet l Tigl.

Nov. 4, 1941. 5 5, STRATTON. I 2,261,308

FASTENING-INSERTING MACHINE Filed Feb. 7, 1940 4 Sheets-Sheet s 154 Ill m Nov. 4, 1941. F. E. STRATTON I FASTENING-INSERTING MACHINE Filed Feb. '7, 1940 4 Sheets-Sheet 4 Patented Nov. 4, 1941 FASTENING-INSERTING MACHINE Frank E. Stratton, Beverly, Mass, assignor to United Shoe Machinery Corporation, Borough of Flemington, N. J., a corporation of New Jersey Application February 7, 1940, Serial No. 317,736

34 Claims. (Cl. 1-32) My invention relates to machines for inserting fastenings in work-pieces, it being particularly applicable to apparatus of the general character of that disclosed in Letters Patent of the United States No. 2,199,514, Stratton, May 7, 1940. This machine is especially designed for attaching a heel to a shoe by nails or other fastenings inserted through the heel-seat into the applied heel, the work being held by pressing mechanism upon its support with a force proportionate to the resistance encountered by the fastening-inserting mechanism.

An object of this invention is to make the action of the operating mechanisms of such a fastening-inserting machine at all times dependable, the driving mechanism moving to a definite extent, to fully insert the fastenings in the work,

and the pressing or clamping mechanism exerting upon said work a force having the desired relation to the resistance to fastening-insertion. This I accomplish by the use of operating means by which one of the mechanisms is moved positively in with respect to the supported work, said operating means being also movable in response to resistance encountered by the mechanism thus moved, together with means for communicating the resistance-generated force to the other mechanism. The absence of yield in the operating means and in the mechanism actuated ensures an unvarying movement of said mechanism,

while the movement of the operating means, other than of yield under the influence of resistance to the mechanism thus actuated, results in an applied force always of the magnitude required. The positively actuated mechanism is preferably that for inserting the fastenings, the reaction produced being transmitted to the workpressing mechanism. The operating means may have an element which is both rotatable and revoluble, the movement of rotation being applied to the driving of the fastenings, while that of revolution is in response to the driving reaction and effects the clamping of the work upon its support. As herein illustrated, the operating means comprises planetary mechanism in which a gear is rotatable by a power-shaft; a second gear is fast upon a sleeve surrounding the shaft loosely and carrying a driver-actuating cam or cams; and rotatable and revoluble pinions connecting the two gears and acting upon the pressure or work-clamping mechanism through a lever. It may be found desirable to apply to the work a clamping force independent of the driving resistance. I therefore have provided mechanism for this purpose, through which is made available an initial pressure produced by means movable under the power of the machine. This means preferably comprises a cam upon the power-shaft, and acting upon a lever, which, in turn, may act yieldably upon the lever movable by the planetary gearing. When, as in the machine of the previously mentioned patent, there is employed a plurality of sets of fasteningdrivers and hydraulic connecting means through which force is transmitted from one mechanism to another, each of said sets of drivers is positively operated, and the force created by its resistance is communicated from the operating means to the work-pressing mechanism through the hydraulic means.

A further object of my invention is to arrange.

a plurality of sets of fastening-inserting or naildriving means in a compact assembly, and to render this readily removable from the machine with a work-support or jack, as a unit. To this end, the jack is provided with the customary driver-passages, in which move the sets of drivers and. the drivers of such sets are carried by plates nested one within another. For each driver-plate there is an actuating member, these plural members being concentric. The outer actuating memher and its driver-plate are joined by interengaging projections and depressions for positive movement in opposite directions. The jack is movable in ways in the machine-frame, and plural driver-plates, whether or not they are nested, are separable from the machine-frame with the jack, when this is withdrawn from the ways. lhis is effected conveniently by locating the principal lower surfaces of the driver-plates in a common plane, so situated that thejack and driver-assembly may be moved in the ways as a unit and without interference with the actuating members.

In the accompanying drawings is illustrated a particular form of the invention:

Fig. 1 showing the entire machine in side elevaticn, parts being broken away;

Fig. 2 being an enlarged central vertical longitudinal section through the jack, with its supporting and adjusting means;

Fig. 3, a similar view through the lower portion of the machine, taken on the line IIIIII of Fig. 4. v

Fig. 4, a central vertical transverse section, generally corresponding to Fig. 3;

Fig. 5, a detail in elevation of the pressureapplying arms, but viewed at an angle to the horizontal; I

Fig. 6 showing the upper driver-plate in side elevation;

Fig. 7, a broken elevational detail looking from the right in Fig. 6;

Figs. 8 and 9, horizontal sections upon the lines VIIL-VIII and IX--IX, respectively, of Fig. 6, with the three plates assembled;

Fig. 10, a side elevation of the second driverplate;

Fig. 11, a horizontal section on the line "XL-XI of Fig. 10;

Fig. 12, a horizontal section taken just above the lower driver-plate;

Fig. 13, a vertical section on the line XIII- XIII of Fig. 12;

Fig. 14, a top plan view of the actuator for the lower driver-plate; and

Fig. 15, an end elevation thereof.

From the front of a frame-column I0 a bracket I2 projects, and upon this is mounted a worksupporting jack I4. This jack is provided with a set of vertical passages I6, which may be six in number, in which reciprocate pairs of drivers Il I1 I'I IF; and I1 I! for nails or other fastenings, these passages being continued through the jack-top I8. As may be seen in Fig. 2 of the drawings, there is associated with the jack means for varying its position vertically. Movable horizontally in ways upon the bracket I2 is a slide or lower base-piece 22, having its upper surface 24 downwardly and rearwardly inclined. Upon the surface 24 rests the complementally inclined surface of an upper base-piece 26 received in ways 28 upon the lower piece. A vertical pin 30 secured in the frame by a set-screw 32 extends through a slot 34 in the lower base-piece, permitting horizontal movement thereof upon the bracket, and into a bore 36 in the upper basepiece. Said upper base-piece is thus held against movement with the lower, but may be raised or lowered along the pin under the influence of the camming effect of the surface 24. Movement may be imparted to the base-piece 22 by a screw 38 threaded into it and rotatable in a depending portion 40 of the base-piece 26. By turning the screw through a hand-wheel 42 secured upon its outer extremity, the operator may shift the basepiece 22 along its ways 20, and, by the action of its surface 24, change the vertical position of the base-piece 26 and therefore of the jack I4. This varies correspondingly the work-supporting surface of the top-plate I8 to the upper ends of the entire group of drivers, and consequently the depth to which the heads of the heel-attaching nails are sunk in the insoles of shoes being operated upon. A leaf-spring 44, attached to the base-piece 26 and engaging notches in the periphery of a disk 46 fast upon the screw 38, holds the latter in the position to which it is rotated. The jack I4 is retained in operating position in ways 41 upon the horizontal top of the base-piece 26 by a latch 48, which is shown as formed upon the rearwardly extending portion of the spring 44. This latch, when depressed by the operator through pressure upon a finger-piece 50, will free the jack so it may he slid back in its ways with the contained drivers and removed from the machine to be replaced by another jack and drivers, the latter being arranged in accordance with a different nailing design.

The drivers are actuated successively in three groups. The driver-assembly is shown in its operating relation in Fig. 2, while the constituent elements appear separated in Figs. 6 to 13. Fitting in the lower cylindrical portion of the jack I4 is a driver-plate 60 provided with a depending flange 62. Rising from this plate and operating in the jack-pasages I6 are two drivers Il Il To secure each driver to the plate and allow it to be adjusted vertically therethrough to establish the correct relation of its upper extremity to the remainder of the set, the lower portion is threaded at 64 to receive a nut 66 above the plate, and a second nut 68 having a cylindrical portion I0 recessed into the underside of said plate. This cylindrical portion, fitting the recess, furnishes with the plate about it an ample bearing surface for the driver. By backing off one of the nuts, and tightening the other, a driver, having the usual downwardly and inwardly inclined end, may be raised or lowered, as desired, and fixed in its new position, without altering the relation of the inclined end about the longitudinal axis. In the plate 60 are four openings I2 through which other drivers of the set are movable. The flange 62 has an opening through it at '14; in the lower edge is a T-slot 16; while at 18 is a T-shaped projection from the flange. Fitting within the flange is a second driver-plate 80, having at one side a projection 82 which may be necessary to give the proper driver-mounting area for some nailing designs. This projection is received in the flange-space I4 of the plate 60. To the plate drivers II I'I are secured, in a manner similar to the drivers I1, and pass through two of the openings 12 in the upper plate.

Depressions

84, 84 in the plate 80 give spaces for the nuts 68 of the upper drivers, and

openings

86, 86 allow the passages of the two remaining drivers. At the underside of this second plate is a recess 88, within which is a third and lower driver-plate 90. To this is attached by the nuts 66 and 68 the drivers I1, I'I. The area of this lower plate may be increased by a rounded lateral projection 92 to allow for the reception of a driver for certain nailing designs. With three driver-plates nested one within another, as appears in Fig. 2, and in their normal inactive positions, the common plane a: in which their principal lower surfaces all lie and the projection 18 are so related to their actuating members, hereinafter described, and to the top of the bracket I2 with its ways 20, that when said jack has been released from its latch 48, it may be slid back in the ways 41 through the open rear portions of the base-pieces and removed with the entire driver-assembly as a unit. This permits the ready substitution of other jacks and their contained driver-assemblies.

Considering the mechanism for successively actuating the three driver-

plates

60, 80 and 90, there is journaled horizontally in the lower portion of the column II] a driving shaft I00 (Figs. 3 and 4). This receives power through beltgearing I02 (Fig. 1) and clutch mechanism within a casing I04, this clutch mechanism being controlled in the customary manner through connections I08 to a treadle I08 fulcrumed at the base of the column. Loose upon the shaft is a sleeve I I0, rotatable by planetary gearing G having a bevel-gear I I2 secured to the shaft, a bevelgear I I4 fast upon the sleeve and a pair of intermediate bevel-pinions H6, H6. These pinions are arranged to turn upon stub-shafts H8, H8 projecting oppositely from a mounting member I20, having a bearing at I22 about the shaft. Fixed upon the sleeve, within the frame-column beneath the jack I4 and placed closely side by side, are three cams I24, I26 and I28. Guided in the column is a set of three flat plates I30, I32

and I34, each movable in contact with the adjacent plate. or plates and resting, respectively, upon the cams I24, I26 and I28. Movement. of the plates under the. influence of the cams is communicated individually to respective concentric cylindrical members I36, I38 and I46. The member I36 is tubular and is at the outside, the member I38 being guided within it, while the member I46. is shown as a rod within the tubes I36 and I38, it having a shank I42 received in a socket in its plate. The set of plates is maintained in contact with the cams and the cylindrical members upon the plates, by an expansion-spring I44 abutting at its upper extremity against a portion of the column, and at its bottom against a pin I46 held in horizontal alined openings in the member I36 and passing through slots I31 in the members I38 and I46. The pair of lower and upper driver-actuating members I36 and I36 are first elevated by the cam I24 against the expansive force of the spring, the pin I46 traveling through the slots in the members I38 and I46, which then follow successively under the influence of the plates I32 and I34 and their cams I26 and I28. When the upward movement is completed and the plates are released by their cams, the pin, impelled by the spring, first lowers the member I36 and its plate I36, this movement being transmitted to the associated members.

At the upper extremity of the rod I46 is a transverse T-slot I56, which receives a complemental projection IE2 at the underside of a crossbar I64 (Figs. 2, 14 and 15). This crossbar engages the lower face of the driver-plate 96, it being provided at its upper side with depressions I 56 for the nuts 68 of the drivers I 1. The upper end of the intermediate member I38 contacts with the bottom of the driver-plate 86, while the flange 62 of the driver-plate 66 rests upon the outer member I36. This outer member and its driver-plate are compelled to move together in both directions by positive connections at its opposite sides. The T-slot I6 in the flange 62 of the plate 66 receives a complemental projection I58 from one side of the member I36, and the T-projection I8 of the plate-flange lies within a like slot I66 at the opposite side of the member. As the three members I36, I38 and I46 are successively elevated by their cams I24, I26 and I28 through their plates I36, I32 and I34, they correspondingly lift the driver-

plates

66, 86 and 96. This causes the pm'rs of drivers Il II and I1, one after another, to insert pairs of nails, carried upon their upper extremities in the j ack-passages I6, through the heel-seat of a shoe supported upon the jack-top I8 into an applied heel. When the spring I44 retracts the member I36, the driver-plate 66 is positively lowered by the connections I6, I58 and I8, I66. Engagement of the descending plate 68 with the plate 86 and the latter with the plate 90 carries down these driverplates 86 and 96, maintaining the members I38 and I46 in contact with the actuating plates I32 and I34 and these against the cams I26 and I28. Consequently, at the end of an operating cycle, during which the cams have rotated through 360", the entire series of nail-driving elements and. their actuating members have been returned with certainty to normal.

. To hold the work upon the jack-top I8 against the displacing forces exerted when the groups of nails are driven, a pressure-head or mechanism P is employed, this acting. upon the heel being attached. As appears in Fig. 1, the mechanism P is preferably supported by a yoke I 86 guided for vertical reciprocation upon the column I6. To the arms of the yoke are attached side-rods I82, I82, and bridged across the lower portion of the side-rods at I84. (Fig. 3) is the support of a vertical cylinder I86 guided at its opposite sides upon the frame. The support rests upon helical springs I88, I88 surrounding extensions from the rods and having their lower ends contacting with the frame at I96. These springs hold the pressure-head normally separated from the jack-top. The treadle I68 is connected to the cylinder I86 at I94, and is held raised with the cylinder and pressure-head by the springs I88. Movable within the cylinder is a tubular piston I96, depending from a carrier I98 suspended yieldably from the frame-column by springs 266..

This suspension allows movement of the piston with the cylinder. They contain a liquid, such as oil, the passage of which between the two elements is governed by a valve 262 arranged to open and close the lower end of the piston, said valve being seated against an annulus 264 inserted in the piston. The rod or stem 266 of the valve is guided at its upper portion in the head 26'! of the piston. It is urged upward, tending to seat the valve, by a spring 268 surrounding the stem and situated between the head 26'! and a head 2I6 upon the stem. Pivoted upon the carrier is a contact-arm 2I2, which is laterally extended to both rest upon the head of the valve-stem and to be engaged by the driver-actuating cam I24. When the machine is at rest, the cam depresses the valve so the end of the piston is opened, and the cylinder may move with relative freedom over it. This facilitates depression of the pressure-head P by the treadle I68, to establish engagement of the head with the jacked work. As soon as the cam leaves its normal position, the arm 2I2 is released, allowing the spring 268 to force the valve against the annulus to close the opening and thus trap in the cylinder a body of liquid, which, when the piston is depressed, will compel the cylinder to move with it. When the cam I24 returns to the position at which it forces down the valve-rod, it opens the piston-end anduncouples the cylinder.

Rotatable in the column I6, and extending from front to rear just above the carrier I98, is a spindle 226 (Fig. 3). Fast upon the spindle is an arm 222, having a divided upper end into which extends a rounded projection or arm 224 from the mounting member I26 for the planetary pinions II6 of the gearing G. To the spindle is secured a second arm 226, which at its forward extremity is divided to rest upon the top of the piston-head 261 at opposite sides of the head 2I6 of the valve-rod. Through co-operation of the projection 224 and the bell-crank-lever formed by the

arms

222 and 226, rotation of the mounting I26 about the shaft I66 is resisted by the springs I88, which hold the pressure-head P normally elevated from the jack I4. As the shaft I66 is driven through its clutch mechanism, it rotates the gear II2, turning both the pinions II6 about their shafts I I 8 and rotating the gear I I4 and the sleeve II6 with the shaft I66. The cams I24, I26 and I28, actuated by the sleeve, successively elevate the pairs of drivers Il W and Il against the depressing force of the spring I44, and then, when the points of nails supported upon the drivers encounter the insole of the jacked shoe, against the resistance to nail-insertion. As a consequence of this resistance, a force is exerted by the gear II2 to turn the member I26 upon the shaft I00, thereby tending to revolve the pinions about said shaft, as well as to rotate them about their own axes. The movement of the member I20 clockwise upon the shaft (Fig. 3) turns the bell-crank-

lever

222, 226 anticlockwise and forces the end of the arm 226 down upon the head 201 of the piston I96. This piston, as already pointed out, was locked to the cylinder I86 by the valve 220, as soon as the rotation of the cam I24 began. Therefore, through the support I84 and the siderods I82, the pressure mechanism P, already brought by the depression of the treadle I08 into contact with the heel on the jacked shoe, is forced against said heel to apply thereto final clamping pressure under the power of the machine. As the resistance to nail-insertion increases, the tendency of the pinions II6 to revolve about the shaft becomes greater. By creating between the lengths of the

arms

224, 222 and 226 the proper relation, there may be placed upon the work a downward clamping force sufficiently in excess of the upward displacing action of the drivers to ensure the firm retention of the insole of the shoe upon the jack-top I8.

If desired, there may be added to the workclamping force, produced as above pointed out, an initial clamping pressure also under the power of the machine, which may be superposed upon any resistance due to the movement of the drivers. Loose upon the spindle 220 is an arm 230 (Figs. 4 and 5), which has rotatable upon its outer extremity a roll 232 contacting with a cam 234 fast upon the shaft I00. Extending from the arm 230 is a rod 236 passing through a slot in a projection 238 from one side of the arm 222. Between this projection and nuts 240 threaded upon the outer end of the rod, is a helical compressionspring 242. Immediately upon the beginning of the operating cycle under the power of the machine, the cam 234 in its rotation swings down the arm 230, which is held normally raised by the spring 242. The movement of the arm draws upon the rod 236, forcing the lower end of the spring against the projection 238. This yieldably moves the lever-

arms

222, 226 in a direction to apply pressure to the piston I86 and cylinder I86 locked together by the valve 202. Thus, the treadle-pressure is immediately increased to an extent governed by the design of the cam, without reference to driver-resistance.

The pressure mechanism P (Fig. 1) has a slide 250 movable in horizontal ways in the yoke I80 by a screw 252. Fulorumed upon the slide at 254 is a carrier-lever 256, held normally against a surface 258 upon the slide by a helical spring 260, adjustable as to tension by a screw 264 threaded through the slide. The upper portion of the lever 256 has downwardly and rearwardly inclined ways, in which a slide 266 is adjustable by a screw 268. This slide 266 has movable in horizontal ways by a screw 210 a slide 212, upon which a tread-abutment 214 is arranged for a movement of self-adjustment in arcuate ways. The lower portion of the lever is provided with ways inclined downwardly and rearwardly at a greater angle than those of the upper portion of the lever, and in these ways is movable by a screw 216 a slide 218 carrying a rear heel-abutment in the form of a fork 280. By rotation of the

screws

252, 268, 210 and 216, the two abutments may be disposed correctly for a heel of any size or form. When the mechanism P is lowered, the abutment 214 first engages the tread-surface of the heel supported upon the jacked shoe, adjusting itself to the angle thereof. Then the spring 260 yields to allow the fork 280 to come into con tactwith the rear of the heel, the force being equalized between the two abutments as full clamping pressure is applied.

In using the apparatus, and including the application of a jack and drivers for a changed nailing design, the operator slides from the rear of the machine, into the ways 41 upon the upper base-piece 26, a jack I4 having pairs of drivers I1 I1 and I1 arranged in accordance with the chosen design, latching it at 48. Rotation of the screw 38, with consequent movement of the lower base-piece 22, will raise or lower the jack to give the chosen relation of the driver-ends to the topplate I8. The thread-abutment 214 and the rear abutment 280 of the pressure-head P are positioned by their adjusting screws in the most advantageous positions for the type of heel to be attached. A nail N is dropped into each of the jack-passages I6, a shoe S placed upon the jacktop I8, a heel H applied to the heel-seat and the treadle I08 depressed. The abutment 214 contacts with the tread-surface of the heel and the spring 260 yields, causing the abutment 280 to engage the rear of the heel and a compensating pressure to be exerted by the tilting of the carrier-lever 256 about its fulcrum. After this application of preliminary pressure to the work, continued depression of the treadle causes the connections I06 to trip the clutch mechanism so the shaft I makes a complete rotation, The gear II2, through the planetary pinions II6, rotates the gear H4 and the sleeve H0. The cam I24 upon the sleeve at once releases the rod 206 and the valve 202 closes. The piston I96, which during the creation of preliminary pressure moved freely through the cylinder I66, is now locked to said cylinder. Consequently, the cam 234 promptly places upon the work an initial clamping pressure through the arm 230, rod 236, spring 242 and

arms

222 and 226, the latter arm communicating the force through the piston and cylinder by way of the side-rods I82 and yoke I80 to the mechanism P. In the rotation of the sleeve IIO, the cam I24, after its release of the valve, elevates the actuating plate I30, cylinder I36 and driver-plate 60 with its pair of drivers I1 to drive two nails through the heel-seat of the jacked shoe into the heel clamped upon it. Were there no appreciable resistance offered in this action of the drivers, the mounting member I20 of the pinions II6 would remain at rest, the rotation of the gear II2 being transmitted to the gear II4 wholly by rotation of the pinions about their shafts II8. When the movement of the gear II4 acts against a substantial resistance, as in the passage of the nails into the heel-seat-material and into the heel, revolution of the pinions about the axis of the shaft I00 begins, and the mounting member I20 is displaced, turning upon the shaft. The projection 224 of the mounting member then acts upon the arm 222 to apply a force to the arm 226 additional to that impressed upon it by the cam234. This, through the piston, cylinder, side-rods and yoke, urges the mechanism P upon the work to give a greater, final clamping pressure, the magnitude of which is in proportion to the resistance which produces it and to the displacement of the mounting member.

'By the choice of proper leverages through which the force is exerted, there may be made certain the retention of the insole of the shoe upon the jack-top without danger of crushing the heel or deforming its covering. The actuation of the drivers I1 is followed by that of the drivers II from the cam I26 through the intermediate elements I32 and I38, and finally by the drivers I'I from cam I28 through the elements I34,

and depressions of the latter with the driver-- plate 60, to lower said driver-plate positively.

This communicates its movement to the driver-'

plates

80 and 90, and through them to the actuating elements I38, I32 and I40, I34. When the cycle is terminated, these elements, the cams and pressure-arms have returned to their initial positions. The cam I24 has released the valve 202, so the cylinder I86 is elevated by the springs I88, and the mechanism P frees the work. Upon removal of the heeled shoe from the jack by the operator, the machine is ready for another operation.

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

l. The combination with a work-support, of work-pressing mechanism and fastening-inserting mechanism movable in co-operation with the support, operating means by which one of the mechanisms is advanced positively in its relation: to the support, the operating means being movable in response to resistance encountered by the mechanism thus advanced, means for preventing the advanced mechanism from yielding rearwardly, and means for communicating the resistance-generated force of the operating means to one of the mechanisms.

2. .The combination with a work-support, of'

Work-pressing mechanism and fastening-inserting mechanism movable in co-operation with'the support, operating means by which the inserting mechanism is advanced positively in its relation to the support, the operating means being movable in response to resistance encountered by the inserting mechanism thus advanced, means for preventing the advanced inserting mechanism from yielding rearwardly, and means for communicating the resistance-generated force of the operating means to the pressing mechanism.

3. The combination with a work-support, of

Work-pressing mechanism and fastening-insert ing mechanism movable in co-operation with the support, operating means by which one of the mechanisms is advanced positively in its relation to the support, the operating means being movable in response to resistance encountered by the mechanism thus advanced, means for preventing the advanced mechanism from yielding rearwardly, and means including hydraulic connections for communicating the resistancegenerated' force of the operating means to one of the mechanisms.

4. The combination with a work-support, of work-pressing mechanism and fastening-inserting mechanism movable in co-operation with the support and having a plurality of sets of fastening-inserting drivers, operating means by which the sets of drivers are successively moved positively in their relation to' the support, the operating means being movable in response to resistance encountered by the sets" of drivers thus moved, and means including hydraulic connections for communicating'the resistance-generated 5 force of the operating means to the pressing mechanism. 7

5. The combination with a work-support, of work-pressing mechanism and fastening-insert ing mechanism movable m ce-operation with the support, operating means by which one of the mechanisms is moved positively 'in its relation to the support, the operating means being displaceable as a result of resistance encountered by the mechanism thus moved and in the same direction as that producingsuch movement, and means to apply to "theother mechanism a force proportionate to'the displacement.

6. The combination with a work-support, of work-pressing mechanism and fastening-inserting mechanism movable in co-operation with the support. operating means by whichthe inserting mechanism is moved, said operatingmeans having an element which is both rotatable and revoluble, and means for transmitting the movement of revolution to the work-pressing mechanism.

7. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from the support to clamp the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, operating means for the driving means rotatable with and about the shaft, and

means whereby the movement of the operating means.

a work-support mounted'upon the frame, means movable toward and'fro'm the support to clamp the work thereon,'pluralfastening-driving means 40"co-operating with the support, a shaft rotatable upon the frame, means for operating the plural driving'means successively, such operating means being rotatable with and about the shaft, and means for communicating the movement of the operating means about the shaft to the clamping means. I

9. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from the support to clamp the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, an actuating member for the driving means rotatable upon the shaft, a gear fast upon the shaft, a gear fast upon the actuating member, a pinion revoluble about the shaft and meshing with the gears, and means whereby the revolution of the pinion "affects the clamping means.

10. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from thesupport to clamp the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, operating means for the driving means rotatable with and about the shaft, means whereby the movement of the operating means about the shaft actuates the clamping means, a liquidcontaining cylinder connected to the clamping means,-a tubular piston movable in the move- "0 ment of the operating means about the shaft, and a valve for controlling the flow of liquid between the cylinder and piston.

11. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from the support to clamp means about the shaft 'actuates the clamping a 8. In a fastening-inserting machine, a frame,

the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, a cam loose upon the shaft for actuating the driving mechanism, a rotatable gear for driving the cam, said gear being movable about the shaft, and a lever communicating to' the clamping means the movement of the gear about the shaft.

12. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward andfromthe support to clamp the work thereon,- fastening-driving means cooperating with the support, a shaft rotatable upon the frame, a cam loose upon the shaft, planetary gearing connecting theshaft to the cam, and means under the influence'ofthe planetary gearing for actuating the clamping means.

13. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and'from the support to clamp the work thereon, fastening-driving means cooperating with the support and having a plurality of sets of fastening-inserting drivers, a shaft rotatable upon the frame, a plurality of cams loose upon the shaft for actuating the sets of drivers successively, a gear for driving the cams and being movable about the shaft, and means for communicating to the clamping means the movement of the gear about the shaft.

14. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head cooperating with the jack, a' rotatable shaft, a sleeve loose upon the shaft, driver-actuating means fast upon the sleeve, and planetary gearing for transmitting rotation of the shaft to the sleeve and including a mounting member arranged to turn about the'shaft.

15. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head cooperating with the jack, a rotatable shaft, a sleeve loose upon the shaft, driver-actuating means fast upon the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and including a mounting member arranged to turn about the shaft, and meansfor transmitting to the pressure-head movement of the mounting member about the shaft.

16. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head cooperating with the -jack, a rotatable shaft, a sleeve loose upon the shaft, driver-actuating means fast upon the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and including a mounting member arranged to turn about the shaft, and a lever oscillated by the mounting member and acting upon the pressure-head.

17. In a heel-attaching machine, a jack, naildrivers movable in the jack, 2. pressure-head cooperating with the jack, a rotatable shaft, a sleeve loose upon the shaft, driver-actuating means fast upon the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and including a mounting member arranged to turn about the shaft, a liquid-containing cylinder connected to the pressure-head, a tubular piston movable in the cylinder, a valve controlling the flow of liquid between the cylinder and piston, and means acted upon by the mounting member for moving the piston.

18. In a heel-attaching machine, a frame, a jack mounted thereon, nail-drivers movable in the jack, a pressure-head co-operating with the jack, a shaft rotatable in the frame, a sleeve loose the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and including a mounting member arranged to turn about the shaft, a liquid-containing cylinder connected to the pressure-head, ,a tubular piston movable in the cylinder, a valve controlling the flow of liquid between the cylinder and piston, and a lever fulcrumed upon the frame and having an arm connected to the mounting member and an arm acting upon the piston.

19. In a fastening-inserting machine, a worksupport, fastening-inserting mechanism co-operating therewith, work-clamping mechanism cooperating with the support, means acting under the power of the machine for applying an initial pressure to the clamping mechanism, and means acting under the power of the machine for applying additional pressure to said clamping mechanism.

20. In a fastening-inserting machine, a worksupport, fastening-inserting mechanism co-opcrating therewith, work-clamping mechanism cooperating with the support, means arranged to bring the clamping mechanism into contact with supported work, means acting after such contact has been established for applying initial pressure to the clamping mechanism, and means coming into action after the initial-pressure means for applying additional pressure to the clamping mechanism.

21. In a fastening-inserting machine, a worksupport, fastening-inserting mechanism co-opcrating therewith, work-clamping mechanism cooperating with the support, means actuated by the operator to bring the clamping mechanism into contact with the supported work, means acting under the power of the machine for applying an initial pressure to the clamping mechanism, and means acting under the power of the machine for applying additional pressure to the clamping mechanism.

22. The combination with a work-support, of work-pressing mechanism and fastening-insert ing mechanism movable in co-operation with the support, operating means by which one of the mechanisms is moved in its relation to the work, the operating means being movable in response to resistance encountered by the mechanism thus moved, means for communicating the resistancegenerated force of the operating means to one of the mechanisms, and means acting independently of the resistance-generated force for applying an actuating force to such mechanism.

23. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from the support to clamp the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, operating means for the driving means rotatable with and about the shaft, means whereby the movement of the operating means about the shaft actuates the clamping means, a member fast upon the shaft, and means movable by the member for actuating the clamping means.

24. In a fastening-inserting machine, a frame, a work-support mounted upon the frame, means movable toward and from the support to clamp the work thereon, fastening-driving means cooperating with the support, a shaft rotatable upon the frame, a cam rotatable about the shaft,

planetary gearing connecting the shaft to the cam, means under the influence of the planetary gearing for actuating the clamping means, a cam fast upon the shaft, and means movable by upon the shaft, driver-actuating means fast upon 7 such cam for actuating the clamping means.

25. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head co operating with the jack, a rotatable shaft, a sleeve surrounding the shaft, driver-actuating means fast upon the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and including amounting member arranged to turn about the shaft, a lever oscillated by the mounting member and acting upon the pressure-head, a cam fast upon the shaft, and a lever oscillated by the cam and acting upon the pressure-head. 26. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head cooperating with the jack, a rotatable shaft, a sleeve surrounding the shaft, driver-actuating means fastupon the sleeve, planetary gearing for transmitting rotation of the shaft to the sleeve and. including a mounting member arranged to turn about the shaft, a lever oscillated by the mounting member and acting upon the pressure-head, a cam fast upon the shaft, a lever oscillated by the cam, and yieldable means for transmitting the movement of the cam-oscillated lever to the lever movable by the mounting member.

27. In a heel-attaching machine, a jack, naildrivers movable in the jack, a pressure-head cooperating with the jack, a rotatable shaft, a sleeve surrounding the shaft, driver-actuating means fast uponthe sleeve, planetary gearing for transmitting rotation of the shaft to the,

sleeve and including a mounting member arranged to turn about the shaft, a cam fast upon the shaft, a liquid-containing cylinder connected to the pressure-head, a tubular piston movable in the cylinder, a valve controlling the flow of liquid between the cylinder and piston, means acted upon by the mounting member for moving the piston, and means acted upon by the cam for moving the piston.

28. In a heel-attaching machine, a jack provided with driver-passages, and a plurality of driver-plates situated within the jack and having drivers movable in the passages, said plates and the connections of the drivers thereto being nested one within another.

29. In a heel-attaching machine, a jack proeach driver-plate, such actuating members being concentric and the outer actuating member being joined to its driver-plate by interengaging projections and depressions separabl by lateral movement.

31. In a heel-attaching machine,'a frame provided with ways, a jack movable in the ways, a plurality of driver-plates movable within the jack and separable from the machine with said jack when it is withdrawn from the ways, and a plurality of nail-drivers carried by at least one of the plates.

32. In a heel-attaching machine,a frame provided with ways, actuating means movable in the frame, a jack movable in the ways above the actuating means, and a plurality of driverplates movable within the jack and actuated successively by said means, the lower surfaces of the driver-plates being so related to the actuating means that the jack and driver-assembly may be moved along its ways as a unit.

33. In a heel-attaching machine, a frame provided with ways, a jack movable in the ways, and a plurality of driver-plates nested one within another when in their normal positions, said nested driver-plates being movable with the jack as said jack is moved in its ways.

34..In a heel-attaching machine, a frame provided with ways, a jack movable in the ways, and a plurality of driver-plates nested one within another when in their normal positions, and a reciprocatory actuating member for each driverplate, such actuating members being concentrically arranged and the outer actuating member being joined to its driver-plate by interengaging projections and depressions.

FRANK E. STRATTON.