US786190A

US786190A - Nailing-machine.

Info

Publication number: US786190A
Application number: US57249295A
Authority: US
Inventors: Louis A Casgrain
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1895-12-18
Filing date: 1895-12-18
Publication date: 1905-03-28
Anticipated expiration: 1922-03-28

Description

PATENTED MAR. 28, 1905.

L. A. GASGRAIN.

NAILING MACHINE.

APPLIOATION FILED 1320 18, 1895.

4 SEETSSHEET 1.

PATBNTED MAR. 28, 1905.

.L. A GASGRAIN. NAILING MACHINE.

IIIIIIIIIIIIII ED DEO.18, 1895.

'Jozcc's Ca yrac'rv.

PATENTED MAR. 28, 1905. L. A. CASGRAIN. NAILING MACHINE.

APPLICATION FILED 1330.18, 1895.

4 SHEETS-SHEET 3.

a f! I v loads a. 6:

No. 786,190. PATENTED MAR. 28, 19 05.

L. A. GASGRAIN.

NAILING MACHINE. APPLIGATION FILED DEC.18,1895.

4 SHEETS-SHEET 4.

' 13 mmlrm he e/ 507.

Joan's CZ. Ca s 'ran UNITED STATES Patented March 28, 1905.

PATENT OFFICE.

LOUIS A. CASGRAIN. OF IVINCHESTER, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE UNITED SHOE MACHINERY COMPANY, A CORPORATION OF NEW JERSEY.

NAILIANG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 786,190, dated. March 28, 1905.

, Application filed December 18, 1895. Serial No. 572,492.

ject of the Queen of Great Britain; residing at Winchester, in the county of Middlesex and State Massachusetts, have invented an Improvement in Nailing-Machines, of which the following description, in connection with the accompanying drawings, is a specificatiomlike characters on the drawings representing like parts.

This invention relates to that class of machines particularly adapted for use in the manufacture of boots and shoes, wherein fastenings are severed from the wire-like material of suitable character and inserted by driving means for any purposeas, for instance. into the outer sole of a boot or shoe to secure it to the upper and to the inner sole, or to reinforce or quilt the outer sole, or to slug the heel of a boot or shoe.

In the machine hereinafter to he described, which embodies one form of my invention, I have provided means to adapt the fastenings to the thickness of the stock when uniting a plurality of thicknesses of material,such as an outer sole to an inner sole. WVhen, however, the machine is used for inserting short fastenings to quilt soles and sing heels it is not necessary to vary the length of the fastening according to the thickness of the stock, because it does not reach through the stock. The machine is also readily adapted for driving fastenings formed from wire-like material of any desired cross-sectional shape.

In the present embodiment of my invention I have provided means to efiect automatically the separation of the work-support or horn and the cooperating presser when the nailing operation ceases, to thereby permit the work to move freely between such work-support and presser or to be removed from or applied to the machine. Means are also provided to depress periodically the horn for feeding the work and to impart to the horn or work-support a final depression and leave it down for the removal or application of the work.

I have simplified in various particulars the construction of the apparatus as a whole.

I have also provided means whereby when the clutch and driver-pulley are released the last nail before stopping will be driven and the horn or work-support depressed by the momentum of the main driving-shaft, so that when the brake is applied to bring the mechanism to a full stop there is very little resistance to overcome and the main shaft and cooperating mechanism will be stopped immediately.

The wire-like material from which the nails or fastenings are cut is shown herein as contained in a horizontally-supported reel or carrier freely rotatable about a central support and open interiorly to permit the wire-like niaterial to be drawn from the inside of the coil as it is fed to the apparatus, the rotation of the coil and reel preventing twist in the wire between the reel and the cutting and driving mechanisms.

These and various other novel features of my invention will be fully described in the subjo'ined specification and particularly pointed out in the following claims.

Figure 1 is a right-hand side elevation of the upper part or head of a nailing-machine embodying my invention, the column, pro vided with a base to rest on the floor, being omitted, as are the usual treadles connected therewith. Fig. 2 is a right-hand elevation, partly broken out,'of the lower part of the column and base, with the treadles for controlling the machine and moving the horn or worksupport. Fig. 3 is an enlarged sectional detail taken on the line .1100, Fig. l,looking toward the right. Fig. 4 is also an enlarged section taken on the line a" (0,Fig. 1, showing the feed-stop. Fig. 5 is an inner side view of the horn-controlling cam and its cooperating mechanism. Fig. 5 is an enlarged detail of the pawl-controller to be described. Fig. 6 is a rear end elevation of the clutch, brake, and wedgeblock. Fig. 7 is a plan view of the foot or presser to be described. Fig. '7 is a perspective view of the spring-like cover mounted on the )resser. Fi 8 is a plan view of a modil clutch member 0 into 0 erative en a ement lied form of foot or presser. tional detail thereof on the line :0 a, Fig. 8. Fig. 9 is an enlarged longitudinal sectional detail showing particularly the throat or nailcarrier and its operative parts on the line 0 m Fig. 10. Fig. 10 is a transverse sectional view taken on the line 00 Fig. 9. Figs. 11 and 12 are views in side elevation and plan, respectively, of the work-gage to be described.

The main framework comprises a column A, having at its upper end a head A of suitable shape to provide bearings or supports for the various working parts, the base A of the column (see Fig. 2) resting on the floor and supporting the treadles to be described, the horn B, of usual shape, being rotatable on the hornshaft B, longitudinally movable in a suitable bearing A. of the column. The horn-shaft is prolonged by a rod B, jointed to a treadle B and surrounded by a spiral spring B" within the base, the spring at its upper end bearing against the adjustable nut B, screwed on the rod B to support the horn in a yielding manner, as shown in Fig. 2 and substantially as shown and described in United States Patent No. 403,835, to which reference may be had. The treadle B has jointed thereto at its rear end a rod B, the upper end of which is formed as a rack (Z longitudinally movable in guides (Z3011 the column, said rack being engaged by a pawl (Z on a pawl-carrier (Z which is lifted once at each revolution of the main shaft to be described to thereby, through the rod B and treadle B depress the horn B while the stock is being fed,the pawl-carrier d being also guided by the guides (Z as shown,and similarly lettered in United States Patent N 0. 265,227 to which reference may be had. As in said patent, the cam-block disengages the pawl (Z from the teeth of a rack 6Z5 as the carrier is depressed, the spring B" (see Fig. 2) then immediately acting to raise the horn B against the under side of the stock whatever its thickness. The spring B is of suitable strength to sustain the horn firmly for the driving of the fastenings. By means of the foot-treadle B the operator may depress the horn against the resistance of the spring B, the rear end of said treadle resting against the lever B at the rear of its fulcrum.

Referring to Fig. 1, the main shaft C (shown by dotted lines) is supported in bearings in the head A and has fast thereon a cam-disk C, the periphery of which forms one member of a friction-clutch, the movable member U of said clutch being shown as loose on the main shaft and adapted to be continuously driven by a suitable belt. (Not shown.) A collar C having a rearwardly-inclined face C", is longitudinally movable on the main shaft between the hub of the member C and a collar C fast on the shaft. A wedge-block C, attached to the upper end of a rod (1 cooperates with the collar 0 for forcing movable Fig. 8 is a sccwith fast clutch member 0 upon upward movement of rod C and for permitting the release of the clutch members upon a downward movement of the rod, said rod being jointed at its lower end to a treadle U pivoted to the base at C, (see Fig. 2,) the rod being normally depressed by a suitable spring C Fig. 1. The disk 0 has on itsinner face a cam 0, (see Fig. 5,) against which is held a roller or other stud c on a lever 0 pivoted on a stud a, secured to the head, the lever 0 having mounted therein a short shaft 0 Figs. 1, 5, and 6, having an eccentric or crank pin 0 thereon, fitted into a block 0 which block is moved downwardly and to the left, viewing Fig. 6, when the shaft is turned in the direction of the arrow 10 by means of a handle o At the outer side of the lever c a sleeve 0 is mounted to rock on the laterally-extended hub c of said lever, embracing the stud 0, said sleeve having two arms a" and 0 (see Fig. 6,) the former of which is grooved or recessed to embrace the block 0 which is slidable in the arm 0', while the arm 0 at its outer end enters a recess 0 in the clutch-controlling rod C as shown in Fig. 6. l/Vhen the machine has been brought to a stop, with the parts in the position shown in Fig. 6. the operator may turn the handle 0 in the direction of arrow 10, and the crank-pin 0 will be turned to lower the block 0 and move it to the left, Fig. 6, rocking the sleeve 0 to depress the arm 0 depressing the rod 0 so that if thereafter for any reason the treadle is depressed the said rod cannot be lifted far enough to throw the clutch into operation. By this throw-off device I insure that the clutch shall not be closed unintentionally. This avoids all danger of the machine being started accidentally at an inopportune timeas, for instance, while adjustment of any of the mechanisms is being made. A spring 5 in a housing 0 on the lever o bears against aflattened portion of the shaft 0" to hold it in one or the other position. The thin rim of the disk 0' is embraced by a segmental brake-shoe 0 which is notched at c, Fig. 6, to rest upon a lug 0 on a collar o clamped to the hub o (see dotted lines, Fig. 1) or forming part of the lever 0 said hub extending between the stud 0* and the outer sleeve 0 The spring (1* normally holds the roll 0 against the cam c, and when in the position shown in Figs. 5 and 6 the lug 0 presses the shoe against the disk 0' to completely brake it when the clutch is fully released. A camgroove 6 is formed in the inner face of the disk C (see Fig. 5) to engage a roller or other stud a on a leverfi. The lever e is pivoted on a stud e in the head of the machine and its outer or left-hand end, viewing Fig. 5, is connected by a link a with the pawl-carrier (Z for depressing the horn at times. The disk C is rotated in the direction of the arrow 15, Fig. 5, and from the point 4; to the point 3 the ICC cam-path is shaped to rock the lever e by first carrying the stud 6 toward the center of rotation to raise the pawl-carrier and depress the horn for permitting the work to be fed by the aw], as hereinafter explained, and then carrying the stud e away from the center of rotation to lower the pawl carrier for permitting the horn to be again elevated by its spring 13* for clamping the work. When the pawl-carrier is lowered, as stated the camblock (Z forces the pawl (Z out of engagement with the rack-bar and permits the rod B to move freely downward for allowing the horn to raise and clamp the stock under the influence of spring B. From the point 3 to the point 2 the cam-path e is concentric with the center of rotation of the disk C, so that no movement is imparted to the lever e by this portion of the path and the horn remains raised. From the point 2 to the point 4: the outer wall of the cam-path is concentric with the center of rotation; but the inner wall approaches said center, so as to make a wide portion of the cam-path and permit the lever to have movement at times, as hereinafter described,for giving final depression to the horn. Normally the roll a will bear against the outer wall of the cam-path c and be actuated only by that portion of the path which is between the

points

4 and 3. This portion will rock the lever a first to depress the horn for permitting the feed and then to allow the horn to be raised again by the spring 13* for clamping the work, as stated. The inner or right-hand end of the lever c is notched or shouldered at 0, Figs. 5 and 5, to be at times engaged by a pawlf, pivotally mounted in a boss f of a pawl-carrier having a sleeve-like hub f to embrace the stud 0 said pawl-carrier having on its side nearest the disk 0 a roll f to be acted upon by a species of tappet-cam f A housing f on the pawl-carrier receives a spring 8, which, resting at its lower end on a fixed part of the head, maintains the roll f in engagement with the tappet or quick-motion cam f. The pawl f is governed as to its engagement with the lever e by a pawlcontroller f shown as e an arm pivoted to the lever 0 and having a beveled lug f and a notch f on its upper side near its extremity to cooperate with a tooth on the side of the pawl f, a spring 8 pressing the controller toward the said tooth, as shown in Fig. 5. Now when the clutch-rod C is raised to start the machine the lever c is swung thereby to the right from the position shown in Fig. 5, so that the tooth f of the pawl f will enter the notch f of the pawl-controller f the spring a yielding slightly to allow it to pass over lug f lontinued movement of lever 0 will draw the pawl f from the notch e of the lever 0 because the movement is so rapid that the pawl is withdrawn from said notch a before the tooth f can escape from notch f Since the end of pawl f is inclined,

it depresses the right end of lever a slightly as it is withdrawn, and therefore a clearance is provided between roll a on the lever and the inner wall of cam-groove 0. So long as the operator holds lever 0 out to the right, as he may do by keeping the treadle C depressed by his foot, it will be impossible for pawl f to engage the lever e as the pawl-carrier is oscillated back and forth by the tappet-cam f during the rotation of the main shaft C in the operation of the machine. Thus the lever 6 is left under the control of the outer wall of the cam-groove so that it is automatically raised thereby to depress the horn to permit feeding of the work and also periodically depressed to cause disengagement of the pawl (Z from the rack-bar d and permit the spring B to act to raise the horn and clamp the work, as hereinbefore described. When the treadle C is released while the machine is in operation, the main shaft will continue to rotate, since the high part of the edge cam c by its engagement with roll 0' prevents lover a from swinging to the left, viewing Fig. 5, under the influence of spring O Thus the clutch remains operative and the brake inoperative until the low part 9 of the cam comes into engagement with the roll 0, when spring O is permitted to swing the lever a short distance to the left. This movement, allowed by the low part 9, is sufficient to release the clutch, but is not enough to cause the brake to be applied. Therefore the main shaft continues to rotate, moving through a predetermined angle, until the lower part 10 of the edge cam arrives in position to cooperate with the roll 0 on the lever 0 This lower part 10 of the cam permits the lever to move far enough to cause the brake to be applied and the machine to be stopped. During the movement of the lever 0 permitted by the part 9 of the edge cam, the pawl-controller f is moved to the left, so as to allow the pawl f to engage the notch in the right-hand end of the lever 6 tooth f lying in notch f. As lever c is rocked still farther to the left when the lowest part 10 of the cam is reached pawlcontroller f 7 is forced to move past pawl f, so that these parts take the position shown in Figs. 5 and 5. The tappet-cam f is so positioned on the main shaft that it will actuate the pawl-carrier f immediately after the pawl f has engaged the notch in the lever e and will depress said pawl-carrier and rock the lever e for lifting the rod e", and finally depressing the horn far enough to permit the work to be removed from it and a new piece of Work applied to the horn. The final depression of the horn, therefore, is eifected by the momentum of the moving parts after the clutch is released and before the brake is applied. The rocking of the lever e by means of the tappet-cam is permitted by the wide part of the cam-groove 0 between the points 2 and 4E. The brake is applied at the time that the highest part of the tappet-cam engages the pawl-carrier 7, so that the machine is stopped with the horn depressed, the parts being in the position shown in Fig. 5. The final depression of the horn to permit the removal of the work lowers it a greater distance than it is necessary for it to be lowered for permitting the feed of the work. The mechanism which effects release of the clutch and applies the brake includes the spring C as will be manifest, and this spring is thus a common actuator, as it maybe termed, for releasing the clutch and applying the brake. The operation of such mechanism is arrested automatically after release of the clutch by the cooperation of the part 9 of the cam c and the roll 0 on the lever e, such arrest being maintained during a predetermined angular movement of the main shaft. The extent of this angular movement depends upon the length of the part 9 of the cam, and the arrangement is such that the horn is depressed by the tappet-cam f, and the fastener-inserting mechanism hereinafter referred to is given its final movement from the main shaft during such angular movement of the shaft while the portion 9 of the edge cam c is in position to cooperate with the roll on the lever c that is to say, after the clutch has been released and before the brake has been applied by reason of the part 10 of the edge cam coming into cooperation with the roll on the lever o it will be manifest that the brake is held in inoperative position until after the completion of this angular movement, thus enabling me to utilize the momentum of the main shaft after clutch release to effect the depression of the horn for removal and application of work and the final movement of fastener-inserting mechanism for driving the last fastening. The machine is then easily brought to rest by the brake without shock. This mechanism for giving a final depression to the horn is rendered inoperative when the horn is quickly depressed through treadle B while the machine is at rest. Thus, supposing it is desired to insert an unusually thick piece of work between the horn and the presser or foot, the operator depresses the treadle B thereby relieving the lever c from the stress due to spring B" and the weight of rod B A slight upward force also is exerted upon rod a as the rack-bar (6" passes by its pawl (1, since the pawl is held against the rack-bar with considerable pressure by its spring. Hence the stiff spring is strong enough to force the wedge-like lug f upwardly along the left side of tooth f which swings the pawl f a sufficient distance to withdraw it from notch e. Lever 0 being released from the pawl f, rod 0 is lowered and camblock (Z disengages pawl (Z, so that the horn will be raised to clamp the work upon the release of treadle B Now when lever c is swung to the right upon the starting of the machine pawl f near i its pivot contacts with the side of the recess in boss f", through which it passes, and controller f is pulled past the pawl until tooth f is seated in notch 7", which is the position of the parts when the machine is running with the treadle depressed, as above explained The roll f" is preferably mounted eccentrically on a stud 40, Fig. 5, so that wear may be compensated for, as it is important that the movement of the pawl-carrier f and the lever be timed accurately to follow each other in their motions at just the right instants.

A measuring-leg a, Figs. 1 and 3, has adjustable thereon a collar 0, adapted to descend against a stop e on the head A, through which the measuring-leg is guided, the extent mining the length of the nail or fastening to be cut from the wire-like material, such ad justment being made by the operator. The leg (6 is connected with an arm of a pawl-carrying sleeve (1), which has a second arm, provided with spring-pawls a", (see Fig. 4,) which act on a ratchet-wheel (65, connected to a feeding-wheel a, peripherally scored or serrated to engage and feed the wire-like material 20 used, which latter is pressed against said wheel by a presser-wheel (I, mounted in a yoke o adjustably attached to the head by a screw (0". hen it is desired to stop the feeding of the wire for any purpose without stopping the entire machine, a feed-stop, shown in Figs. 1 and 4 as an arm 75, pi votally mounted in a part of the head A, is swung up into dottedline position in said figure beneath the arm (0 preventing its descent, to enable the pawls a to engage a new portion of the ratchetwheel. Normally said stop is swung down into inoperative position, shown in full lines in Fig. 4. The periphery of the presser-wheel (6 will preferably be grooved and serrated suitably to engage \virelike material of any desired shape in cross-section, said groove also alining the wire with the passages below. It will be obvious that the back stroke of the pawls a is regulated by the position of the collar (5 on the measuring-leg to effect at their next forward stroke a greater or less rotation of the feed-wheel to provide for the desired length of fastening. A third arm of the sleeve (6 has a suitable roll (0 (see Fig. 3,) acted upon by a cam (612 on a disk at. The cam a has a flat portion a, which permits the roll to move freely, more or less, when the pawlcarrier is moving on its back stroke to assume a starting position, the roll moving a distance in accordance with the adjustment of the collar a on the measuring-leg a before the rise a engages and lifts the roll to thereby effect the feed. \Vhen the wire is fed forward more or less by such movement, the cutters, to be hereinafter described, are actuated to cut or sever a portion of the wire to form the nail- 1 or fastening to be driven. The edges of the of longitudinal movement of said leg deter-.

cutters which engage and sever the wire are beveled, and these two edges are brought together in the wire. Now if the Wire be held rigidly by the feed mechanism during the cutting, the beveled edges of the cutters will have to not only cut into but also compress the wire, and a very great strain will be put upon not only the cutters, but their actuating mechanism as well. On the contrary, if means are provided for permitting the wire to move in a retrograde direction slightly as the edges of the cutters enter it the strain upon them and their actuating mechanism will be greatly reduced. I have herein provided such means by cutting away the cam a at a" at the end of the feed portion a, Fig. 3, so that as the cutters enter the wire to sever it the roll (0 will enter the depression a, and thereby the pawl-carrier is permitted to move back slightly, releasing the wire sufficiently to allow it to be moved backwardly by the action of the cutters. Such release of the feed, as it may be termed, does not cause a disengagement of the feed-wheel'and wire, but only allows a slight retrograde movement thereof. A strong spring S depresses the measuring-leg, as clearly shown in Fig. 3, and maintains the roll a in position to be acted upon by the cam.

The wire-guide is shown in Fig. 4 as two plates 7) b, the former provided next the plate 7/ with a guide-groove shaped to correspond substantially to the cross-section of the fastening material, the lower end of plate 5 having a steel wear-plate If. The driver-bar b has attached to it a driver 6*, Figs. 1 and 9, which enters a driver-passage in a guide I), suitably attached to the head of the machine.

The awl it is attached to an-awl-bar, (not shown, as it forms no part of my invention,) and the awi-bar is reciprocated by an arm h, forming part of a two-armed lever mounted on a stud if and having a second arm it provided with a suitable roller or other stud, which enters a groove in the outer face of a cam-hub fast on theouter end of the main shaft G. The awl-bar shank slides vertically in a rocking frame 71, having a sleeve-like hub v", embracing a hub surrounding the main shaft in front of the cam-disk a. The stock is fed while the awl is in it by means of suitable devices forming no part of this invention, but which are shown and described in United States Patent No. 563,478, to which reference may be had for a fuller disclosure. These devices, however, will be herein described briefly. A movable side guide i is attached to the front side of the rocking frame, and at the rear of said frame is attached a guideway having a movable side 2:", in which guideway is placed a swivel-block vi, (see Fig. 3,) entered by a pin 80, extended from a dovetailed slide 7 toothed at one side and fitted into a passage in a rocking arm 8, connected to a short rockshaft 27, having an arm 2' provided with a roll which enters a cam-groove 2' at the outer side of the disk a, (see Fig. 3,) the rock-shaft by engaging the sliding block moving the rocklug frame to effect the feed. A stud-gear a on the arm vj engages the teeth of the slide 2- and moves it relatively to said arm and rocking frame to alter at will the length of feed.

The main shaft G has a cam 71:. provided peripherally with a groove in which enters a roller or other stud of a toothed lever 7:, pivoted at its upper end on an eccentric stud 90 on the head, the lower end of said lever having (see Fig. 9) rack-teeth to engage the teeth of a block if, having extended loosely through it the reduced end if of a shaft k, the block 71: being held securely on said shaft by a nut 95. The shaft end k is provided with a longitudinal threaded hole with a flaring outer end to receive a screw-bolt 711", having a conical head, the end of the shaft being split at if, so that when the nut 95 has been turned up on the shaft to the proper point to prevent endwise movement in the block tightening of the screw-bolt will clamp or lock the nut, so that rocking of the shaft 7: will not loosen it. It will be noticed by referring to Fig. 9 that the block 71: slides in a bearing in the frame or head A and that there is a clearance b between the upper side of the shaft and the block, since the reduced circular end Z7 of the shaft is made of less diameter than the internal diameter of the block. As the block wears on its under side it moves away from the toothed lever Zr, the clearance permitting such movement, and by turning the eccentric stud 90, on which said lever is mounted, it is lowered to maintain its toothed end in proper engagement with the block, a set screw 105 normally holding the stud clamped. The forward end of the shaft if has attached to it a suitable throat Z0 into which the wire or wire-like material is fed from the wire-guide, and when a fastening or nail has been cut off the throat is moved, with the fastening, into the d river-path, the lever 71'. effecting such longitudinal movement of the throat. As the wire-passage is inclined and the d riverpath is vertical the throat must be tipped slightly in moving from one to the other, and this is effected by means of a sleeve l1, embracing the shaft ]0 and slotted longitudinally to receive a spline Zr which enters a longitudinal groove 7. in the shaft, so that oscillation of the sleeve will be imparted to the shaft without hindering longitudinal movement of the latter. A lever a, split at its end at is, (see Fig. 10,) is mounted upon the sleeve k and receives a portion of the spline 75 a suitable serew-bolt [r clam ping the lever upon the sleeve, and thereby holding the spline tightly, and the lever Z9 has a roller or other stud to enter a cam-groove at the rear side of the disk a.

The movable cutting-blade m, Figs. 4 and 9, is held in adjusted position on an arm 70" of the sleeve Zr by means of a cap-plate m and screw 711?, while a screw an", longitudinally movable in said arm, bears against the outer end of the cutter, so that it may be readily moved inward as desired without partially dismembering the machine. The stationary cutter m (see Figs. 1 and 4) is held between the head of the machine and a detachable cap m by a suitable set-screw m, and when the wire-like material has been fed into the throat K7 the sleeve F is rocked, causing the movable cutter to pass the lower end of the wire-guideway and cut the wire off, the throat at the same time being tipped into substantially vertical position to thereafter be moved forward under the driver to enable the latter to strike the nail or fastening and drive it from the throat into the work. During the forward movement of the throat containing the loose fastening the lower end of the latter may ride over a suitable foot or presscr a (shown separately in Fig. 7) until it comes over the awlhole 71/ therein, through which the fastening passes to the work. Referring to Figs. 7 and 9, the foot or presser w is recessed on its upper side at 7/3, and a large hole 12 and two smaller holes a" and Marc drilled through the presser. A spring plate or cover it, having holes n and a punched therein to leave rims or burs on the under side to enter, respectively, the holes 123 and a", is held in the recess a between the presser and the adjacent portion of the head A, as shown in Fig. 9, the bur or rim a forming a pivotal point for the cover-plate. Normally the cover-plate is in the position shown in Figs. 7 and 9, with its front end covering the hole n. and held in place between the presser n and the adjacent part of the head; but if the operator desires to adjust the cutters he stops the wire-feed and moves the plate 42 to one side until the hole n. is uncovered, and he then can insert from below a piece of wire to be acted upon by the cutters until the desired adjustment is effected, thus obviating waste of the wire and a tedious feeding thereof little by little.

In the modification, Figs. 8 and 8, the presser or footn has asingle hole made therein to receive a rotatable block a, upset at its ends to retain it in place and having an cecentric hole ntherctln'ough normally in the position shown in Fig. 8; but by giving the block a partial rotation the hole n is brought into position to enable a piece of test-wire to be inserted for use in adjusting the cutters.

Referring to Figs. 1, 11, and 12, I have pivoted a support or arm 0 on a stud r/ of the head or frame, which is acted upon by a springpin 0 when in the position shown to retain it elevated, the outer end of said arm forming a bearing for a transverse rotatable stud 0 which receives eccentrically a screw pin or stud 0, having a threaded end 0' reduced in diameter and screwed into the stud and also having a shank a, which slides in a slot o. This part 0 has its upper end 0 turned inwardly to slide in a slot or groove on the.

side of the hearing at the outer end of arm 0, thus forming a guide or slide way for the gage. A spring-washer e is interposed between the head of the screw-pin u and the end of the gage to press the latter firmly into the preferably recessed face of the stud-bearing, rotation of the stud by means of the slot-and-pin connection moving the gage a longitudinally toward or away from the front of the machine below the foot or presser'n, the spring-washer 0 holding it in adjusted position. A rod 0 held by screws 0 in the stud-bearing, is bent at its ends to form limiting-stops for the extreme longitudinal movement of the gage. \Vhen it is desired to nail across the sole of a boot or shoe, the arm or support 0 may be turned down on its fulcrum 0 entirely out of the way.

The head of the machine has rigidly secured to it a laterally-extended arm '2', upturned at its outer end to form a support for a reel for the wire IV. The reel comprises, essentially, a centrally-open bottom plate 0' and a series of arms '1', radiating from the hub 1' said arms being downturned at their outer ends to the bottom plate. The construction of the reel, however, forms no part of my present invention, as it forms the subject-matter of and is claimed in another application filed by me as adivisional case from this present application and already issued as Patent No. 765,650, dated July 19, 1904. The wire is drawn from the interior of the coil through the open center of the plate o and thereby causes the reel to rotate freely in a horizontal plane about its vertical axis, and as the wire passes to the fixed guideway the free rotation of the reel about a fixed vertical pivot prevents twisting of said wire.

I have so arranged the operation of the clutch, brake, and nail-driving mechanisms that the clutch is first released when the roll a is traveling over the lover part 9 of the edge cam 0 before the brake is applied, and the brake is applied after the release of the clutch, when the roll 0' passes to the still lower portion 10 of said cam c, and between the time when the roll 0 passes to the part 9 and leaves it the momentum of the main drivingshaft C is taken up and utilized by the driving mechanism and the horn-depressing device, both hereinbefore described. As the momentum is thus employed to perform work, the latter gradually absorbing power derived by or through the momentum, it is obvious that when the brake is applied after the roll 0 passes from the part 9 to the lower part 10 of the earn 0 there is very little resistance due to the momentum of the machine to be overcome, and the machine will be stopped immediately without undue shock.

From the foregoing it will be obvious that when the machine is in operation the horn will be periodically depressed sufficiently to permit the Work to be removed from or applied to the horn or for feeding and the horn is also in depressed position when the machine is stopped whether a single nail or fastening or any number be driven, the mechanism employed for periodically depressing the horn being also used when the horn is finally depressed. Both the periodical and final depression of the horn are automatic, and the machine when stopped is always in position to have the work removed, and consequently the machine is always ready to receive work without requiring the operator to first lower or depress the horn.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. In a machine of the class described, a main shaft, mechanism for inserting fastenings, a clutch and a brake, means governed by rotation of said shaft to effect release of the clutch, operating devices actuated from the main shaft and arranged to derive their final movement from the main shaft after release of the clutch, whereby the momentum of said shaft is taken up and utilized prior to application of the brake, and means to maintain the brake in inoperative position until after such utilization of the momentum, to prevent shock as the machine is stopped.

2. In a nailing-machine, a main shaft, a clutch therefor and a brake, means governed by rotation of said shaft to effect release of the clutch and subsequently apply the brake to stop rotation of the shaft, nail-driving devices arranged to derive their final movement from the main shaft after release of the clutch, whereby the momentum of the shaft is taken up and utilized prior to application of the brake, and positive means to hold the brake from movement to operative position until after such utilization of the momentum, to prevent shoek as the machine is stopped.

3. In a nailing-machine, a main shaft, a clutch therefor and a brake, means to effect the release of the clutch and the application of the brake, nail-driving devices arranged to derive their final movement from the main shaft after release of the clutch, whereby the momentum of the shaft is taken up and utilized prior to the application of the brake, and positive means, including a member rotatable with the shaft and independent of the clutch, for governing the clutch-releasing and brake-applying means to hold the brake from movement to operative position, after release of the clutch, until the momentum of the shaft is taken up and utilized. j

4C. In a nailing-machine, a main shaft, a clutch therefor and a brake. mechanism to release the clutch and apply the brake successively, means governed by rotation of the shaft to maintain the brake in inoperative position through a predetermined angular movement of the shaft. following clutch release, and naildriving devices to derive their final movement from the main shaft during such predetermined angular movement thereof, whereby the momentum of the shaft is taken up and utilized prior to the application of the brake.

5. In a nailing-machine, a main shaft, a clutch therefor and a brake, mechanism, including a common actuator, to release the clutch and apply the brake successively, means to arrest the operation of said mechanism automatically after release of the clutch and during a predetermined angular movement of the main shaft, and nail-driving devices'to de rive their final movement from the shaft during such arrest of said mechanism, whereby the momentum of the shaft is taken up and utilized prior to the application of the brake.

6. In a nailing-machine, a horn, a main shaft, means, including agoverning member, operated by said shaft, to periodically depress the horn for feeding the work, and a device between said shaft and said governing memher, to give to the latter an additional movement, and thereby impart to the said horn a final depression when the machine is stopped.

7. In a nailing-machine, a horn, a main shaft, means, including a rocking lever, operated thereby to periodically depress said horn for feeding the work, and devices between said shaft and said rocking lever, to give to the latter an additional rocking movement to impart to said horn a final depression and leave it down for the removal or application of the work.

8. In a nailing-machine, a horn, a main shaft, means operated thereby to periodically depress said horn for feeding the work, and devices between said shaft and said means, to give to the latter an additional movement to impart to said horn a final depression and leave it down for the removal or application of the work, combined with a brake, and a brake-controller to put into or out of operative relation the said devices located between the main shaft and the means for periodically depressing the horn, whereby the brake is also appliedto the main shaft to restrain its rot. tion.

9. In a nailing-machine, the following instrumentalities, viz: a horn, a main shaft, a cam and a clutch thereon, a clutch-rod, a brake, and a brake-controller cooperating with the cam, and means operated by the cam to periodically depress the horn for feeding the Work, combined with devices governed by said brake-controller. and located between the cam and the means for periodically depressing the horn to finally depress the latter, a starting and stopping mechanism, adapted when operating to stop the machine to cause the brakecontroller to put into operative relation the said devices located between the cam and the means for periodically depressing the horn,

to thereby impart an additional final movement to said horn.

10. In a nailing-machine, a horn, a controller-lever. connections between said lever and horn, and a cam to act on said lever at one side ofits fulcrum, combined with a pawlearrier having a pawl, means to move said pawl-carrier, and means to move the pawl on the said carrier, whereby it may at times engage the opposite end of said lever and impart to it an additional movement in a direction to finally depress the horn and leave it down for the removal of the work.

11. A hollow sleeve, a movable cutter connected therewith, a fixed cooperating cutter, a shaft longitudinally 'movable within said sleeve and provided with a nail receiving throat, an arm to rock said sleeve, a spline connecting said shaft, sleeve and arm, and means to clamp the arm upon the sleeve and thereby clamp the spline.

12. A cutter-carrying shaft, a toothed block to receive the end of the shaft and leave a clearance between the upper part of the shaft and the block, clamping devices to hold said block in adjusted position upon the shaft, atoothed actuating-lever for said block, and an adjustable stud upon which said lever is mounted, whereby wear of the block may be taken up by adjustment of said lever and clamping devices.

13. In anailing-machine, wire-receiving devices, a movable nail-receiving throat therebelow, a presser upon which the lower end of a nail loose in said throat rests during movement of the latter, said presser having a naildischarge opening, and an auxiliary opening below the wire-receiving devices, and means to normally bar the passage of a nail through the auxiliary opening.

14. A presser for nailing-machines, having a passage for the nail and an auxiliary passage, and a cover-plate mounted to swing laterally upon the presser, to normally cover the auxiliary passage.

15. Inanailing-machine,ahorn,mechanism, including a lever, to depress the horn, a cam to rock said lever periodically to depress the horn and permit feed of the work, a pawl to cooperate with and rock said lever when the machine is about to be stopped, to finally depress the horn, a pawl-carrier and means to move it, and a pawl-controller to disengage the pawl and lever when the machine is running continuously.

16. In a nailing-machine, a main shaft, a horn and means normally acting to raise it, a treadle by which it may be depressed, mechanism, operatively connecting the main shaft and the horn and including a movable connecting member, for giving a final depression to the horn as the machine comes to a stop, and means for automatically moving said connecting member, when the treadle is actuated to depress the horn, thereby to render inoperative said mechanism for giving a final depression to the horn.

17. In a nailing-machine,feeding mechanism for the wire, comprising a feed-wheel, its actuating-pawl and pawl-carrierya feed-cam having a feed-releasing portion, connections between said cam and pawl-carrier, to actuate the latter, cutting devices to sever a nail or fastening from the wire, and actuating mechanism therefor, the feed-releasing portion of the cam permitting slight retrograde movement of the wire and feed-wheel when the cutters operate, to release the latter and the cutter-actuating mechanism from strain.

18. In a machine for inserting nails into boots and shoes, the combination of the following instrumentalities, via: a verticallymovable horn or work-support; a rotatable shaft; a cam on said shaft to effect movement of the horn downward a sufficient distance to permit the work thereon to be taken from or applied to the said horn; intermediate mechanism connecting said horn with said cam; and a brake mechanism to stop the rotation of the cam-shaft, adjusted with relation to the said cam to operate to stop rotation of the said shaft when the point of greatest throw of the horn-lowering cam is acting upon the said intermediate mechanism to lower the horn, whereby the work may be taken off and placed on the horn.

19. In a machine for inserting nails into boots and shoes, a horn or work-support; a lever, means to connect said horn with one arm of said lever; a pivoted cam-operated lever; means to connect the cam-operated lever with the lever to which the horn is connected; and a rotatable shaft; a cam mounted on said shaft and provided with a cam-surface of a throw sufficient to lower the horn enough to permit the work to be removed from or applied to the horn; a stud or roller located at one side of the fulcrum of the cam-operated lever and acted upon by said cam-surface to actuate the cam-operated lever, to positively lower the said horn; and a brake mechanism to stop the rotation of the cam-shaft, and adjusted to operate with relation to the said cam-surface to stop rotation of the said shaft when the greatest throw of the cam-surface is in engagement with said stud or roller and the horn is in its lowered position, whereby the work may be taken off and placed on the horn.

20. In an apparatus of the class described, means to hold the work in position to be operated upon, a rotatable shaft, mechanism connective of the shaft and said means, actuated by the former, to govern completelythe operation of said work-holding means, and brake mechanism constructed and arranged to stop rotation of the said shaft when the work-holding means is in position to permit removal of the work.

21. In an apparatus of the class described,

- means for holding the Work in position to be operated upon, a rotatable shaft, mechanism connecting said shaft and said means and actuated by the shaft to control the depression of the work-holding means for permitting the removal of the Work, and brake mechanism constructed and arranged to stop rotation of said shaft when the work-holding means is in a position to permit removal of the work.

22. In an apparatus of the class described, a vertically-movable horn or work-support, a rotatable shaft, means intermediate said shaft and the horn, actuated by the former, to depress the horn, and a brake mechanism constructed and arranged to stop rotation of said shaft when the horn is depressed by said means, whereby the horn is left in such position as to allow the work to be removed.

23. In a machine of the class described, a main shaft, a clutch, a brake, means for releasing the clutch and applying the brake, and a horn, in combination with mechanism arranged to be operated independently of the regular operation of the machine for depressing the horn to permit removal of the Work, and means connected with the main shaft for actuating said mechanism automatically after the clutch is released and before the brake becomes effective, whereby the momentum of the shaft is utilized for depressing the horn.

24. In a machine of the class described, a main shaft, a clutch, a brake, means for releasing the clutch and applying the brake, and a horn, in combination with mechanism arranged to be rendered operative when the clutch is released for depressing the horn to permit removal of the work, said mechanism being actuated by the momentum of the main shaft after clutch release and before the brake is applied.

25. In a machine of the class described, a main shaft, a clutch, a brake, mechanism for releasing the clutch and applying the brake, a horn and means operated from the main shaft independently of the machines regular operation for, automatically depressing the horn after clutch release and before the brake becomes effective, whereby the momentum of the shaft is utilized.

, 26. In a machine of the class described, a main shaft, a clutch, a brake, mechanism to release the clutch and apply the brake, in combination with means governed by rotation of the shaft to maintain the brake in inoperative position through a predetermined period after clutch release, a horn and means for depressing the horn for removal of the Work, said means being arranged to be actuated from the main'shaft after the clutch is released, whereby the momentum of the shaft is utilized before the brake becomes effective.

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

LOUIS A. GASGRAIN.

Witnesses:

JOHN C. EDWARDS, HADLEY P. FAIRFIELD.