US853742A - Machine for inserting metallic fastenings. - Google Patents

Description

No. 853,742. PATENTBD MAY 14, 1907. c. H. 'SMITH. j

, MACHINE FOR INSERTING METALLIC FASTENINGS.

APPLICATION FILED AUG. 13:1900.

1 1n: NORRIS PETERS ca. wnsnmaran, n. c.

NH s

earns PATENT rrrcn.

CHARLES H. SMITH, 'OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF BOSTON, MASSACHUSETTS, A

CORPORATION OF NEW JERSEY.

MACHINE FOR INSERTING METALLIC FA STENlNGS.

Application filed August 13,1900. Serial No, 26,692.

To all whom it may concern:

Be it known that I, CHARLESH. SMITH, a citizen of the United States, residing at New Bedford, county of Bristol, State of Massachusetts, have invented an Improvement in Machines for Inserting Metallic Fastenings, 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 machines for inserting fastenings or slugs, both of which are hereinafter for convenience included by the term fastenings, and the object of the invention is to provide mechanism whereby fastenings may be driven into the work in a plurality of rows, or at different distances from the edge of the work, the fastenings being driven preferably in said different rows alternately, the fastenings of one row being staggered with relation to the fastenings of another row.

The invention is particularly intended for use on machines for inserting fastenings in shoes.

The shoe to be operated upon is mounted on a suitable horn or support and is advanced to present successive portions to the fastening inserting mechanism by means which in addition to its forward feeding movements also has movements transversely of the line of feed whereby the f astenings may be driven intermittently in difierent rows. In connection with this mechanism there is also preferably employed means for determining the row in which the fastening first driven shall be inserted and this means is preferably a manually controlled device whereby the operator may cause the first fastening to be inserted in either row as desired.

Figure 1 in side elevation represents a suf ficient portion of a machine of well known construction for inserting metallic f astenings, with my improvements applied thereto, to enable my invention to be understood, said figure also showing -a shoe in position to have its heel operated on. Fig. 2 is a section below the dotted line as of Fig. 1. Fig. 3 represents the pattern cam detached. Fig. 4 is an enlarged detail of the end portion of the feeding device, and Fig. 5 is a detail showing the end of the pawl with its connected pin.

Specification of Letters Patent.

Referring to the drawing, illustrating a preferred form of my invention applied to a well known type of machine, A represents a column forming part of the framework of a machine for inserting fastenings, A a crank pin or, it may be, an eccentric on a 'shaft A sustained in said column and driven in any usual or suitable way; 4 represents part of a collar which may surround a vertica lly reciprocating working head E, it containing, it will be supposed in practice suitable wire feeding grippers to engage and feed the fastening material; B is a link jointed at 46 between its ends to said collar, said link being also connected with said crank pin and with a lever B having an attached wedge or cam shaped leg B the cam portion of which, in the descent of the leg, acts on the rear end of a work-positioning and feeding device B and forces it outwardly to insure its firm engagement with the work preparatory to the driving of the next fastening and its subsequent lateral feeding movement. In the rise of the leg B after the fastening has been driven and the feeding movement of the device B has taken place, the cam portion of the leg releases the outward pressure of the feeding device and permits it to be slightlyretracted by the tension of a spring a to facilitate the return, lateral movement of the feeding device, all as will be hereinafter more fully explained. The lever B.is pivoted upon a feed actuating lever or device C, free to be turned on a stud C shown as projecting from the column A, the lower end of said lever C being provided with an incline 0, see Fig. 2, which in the movement of the lever C in the direction opposite the arrow upon it in Fig. 1, meets the inclined face 0* on the back of a dog 0, pivoted at 0 and moves said dog so that its inner face resting against the side of the feeding device B will move the same laterally in the direction of the arrow thereon,

Fig. 2, to feed the shoe over the horn D, a

is raised to permit the feeding device to re- Patented. May 14, 1907. V

turn to its normal or starting position. The return movement of the feeding device is effected by the spring a which, to this end, is connected with the feeding device and with an arm extended from the side of the leg B thus occupying a diagonal position so as to move the feeding device both backwardly against the thin portion of the leg B and laterally against the stop 0 into its normal or starting position. The stop 0 may be suitably adjusted to vary the lateral position to which the feeding device is returned and thereby vary the amount of feeding movement imparted to the work and determine the spacing of the fastenings.

The working head referred to is shown fully in United States Patent No. 325,274, September 1, 1885, the levers B and C, substantially in United States Patent No. 346,129, dated July 27, 1886, and the leg 13 and feeding device in United States Patent No. 447,358, dated March 3, 1891, that patent also showing a horn, a driver bar and driver. Said patent No. 447,358 also shows feeding means for feeding fastening material which may be employed instead of the mechanism provided for this purpose in Patent, No. 325,274. Instead of the particular actuating means herein represented for moving the feeding device forwardly to engage the material and then laterally to feed the material and which then retires from engagement with the material preparatory to another feeding action, I may employ any other usual or suitable devices.

The inner end of the feeding device B enters loosely a guide block a, having an extension a. which enters and is free to turn in a bearing in a plate a a lug 2 crossing the feeding device, at its upper side. The spring a, connected with the feeding device B and with the leg B acts'normally to hold the feeding device up against said lug and keep the rear end of the feeding device against the cam face of the member 43 of the leg, as fully explained in said Letters Patent No. 447,358. A second spring a, is connected at one end with said leg and at its other end with an adjusting device a shown as a screw threaded rod extended through a tubular part of a bar a able nuts 4 5 by which to change the position of the screw and alter the tension of said spring a it acting to hold the leg and feeding device normally away from a pattern cam hereinafter referred to.

The lever B has an attached pawl or actuator 5, herein represented as made in two parts and. united adjustably by a set screw 7), to thereby enable the length of the pawl to be correctly adjusted to co-act properly with the teeth (1 of a pattern cam D, shown detached in Fig. 3, said cam having two acting faces (1, shown as laterally projecting lugs on the face of the cam, and two spaces (2 bef will secure the shaftf in place, and it will and having applied to it suittween said. faces, said cam being mounted rotatively on a stud screw (1, held in a suitable stand 18 made adjustable on the lixed bar a, by or through a suitable nut Hl'applied to the threaded stud 20 connected with said stand and extended through a slot 21 in the bar.

Suitable tubular bushings 22 are interposed between the rear side of the bar a and the plate (L2, said bar and plate being con nected by stud screws 10 with a suitable projection as 23, forming preferably a part of the framework A.

The leg B has two branches 43 and 44, and the branch 44 is passed through a hole in a follower f, represented as of loop form, one end of the follower occupying a position to contact at times with the acting faces (1 of the pattern cam D, and at other times to enter the space d thereof. The followerfembraces an eccentric-stud 5, extended from one end of a shaft/' having connected with it a suitable hand wheel or device f, by which to turn said shaft and cause the stud 5 to occupy any desired. position, said stud acting as a stop to arrest sooner or later the movements of the follower to the left, to thereby determine the distance from the edge of the heel for the inner row of nails, see Fig. 2.

\Vhen the follower meets one of the faces (1 of the pattern cam the leg B is guided in one plane and at such time the fastening is driven in the outer row of fastenings, but when the pattern cam occupies such position that the follower enters a space (I thereof, then said follower is arrested by the stud 5 and the leg B is then capable of being moved in a different plane at which time the fastening will be driven in the inner row.

From the foregoing description it will be understood that the eccentric stud 5 on the shaftf constitutes a means for determining the distance apart of the different rows of fastenings and the distance apart having been determined by adjusting the stud 5 into the desired position, the operator by a set screw be retained in such position so long as it is desired. to continue the driving of rows of fastenings at that distance apart.

Tle follower has extended baclnvardly from one side of its rear end, see Fi 2, a rod 12 which enters a bore in a block 13 pivoted at 14 in the stand 18. The rod is extended through a spring 15 which acts to hold the follower against the leg B and to prevent any loose motion between said parts. The leg B" is acted upon by the spring (1 before described, which, in co operation with the spring 15, tends to hold the follower normally out of the spaces (i of the pattern cam so that said cam may be turned by its operating pawl I). The extent of the forward movement of the follower and connected parts, un-

I d of the pattern cam by the springs andv der the influence of the springs, is limited by a stop 16 shown as a pin extending from the rod 12 to abut against the block 13.

When the pattern cam is positioned to present a lug d in the rear of the follower said lug will constitute an abutment for the fol lower and the feeding device and the work will be supported at the maximum distance outward from the machine for a fastening to be inserted in the outer row, as shown in Fig. 2. When, however, the pattern cam is turned to present a space (i in the rear of the follower the feeding device may be pressed inwardly or to the left, viewing Figs. 1 and 2, by the work held against it in opposition to the springs 15 and (1*, thus forcing the follower into the space d as far as the stop 5 will permit. The feeding device will then support the Work so pressed against it for a fastening to be inserted in the inner row of fastenings, as shown in Fig. 2. At the next operation of the machine the pattern cam will be turned another step to put a lug d in the rear of the follower, said follower having in the meantime been moved out of the space a or, if the workman, by holding the work firmly against the feeding device, prevents the follower from being so moved by the springs, said follower will be positively forced out of the space by the engagement of the lug d with the beveled end f X of the follower, see Fig. 3. The lugs 61, co-Operating with the beveled face X of the follower, constitute positive means for moving the feeding device forwardly whenever for any reason the springs fail to move said device.

In Figs. 1 and 2 the actuating lever C for moving the feeding device is shown as occupying the position it assumed when it completed its movement to effect. the movement of the feeding device, for moving the stock on thehorn after a fastening was inserted in the outer row of fastenings, the stock being unclamped while it is being fed.

1n the operation of the machine the feeding device having been moved to feed. the shoe, the shaft A in its further rotation (from the position shown in Fig. 1) acts to depress the link B and the collar 4 connected therewith and surrounding the working head referred to, turning the lever B in a direction to lift the leg B and cause the pawl b, carried thereby, to rise and turn the pattern cam, the lifting of the leg B bringing the thin lower end of the member or cam portion 43 thereof opposite the inner end of the feeding device so that the spring a may withdraw the acting end of the feeding device momentarily from contact with the heel, which is then yet clamped. During this upward movement of the leg B the lever C is turned in the direction of the arrow thereon, in Fig. 1, thus freeing the feeding device that it may return to its starting position under the continued action of the spring a The feeding device having returned to its starting position the leg B is depressed causing the cam member 43 thereof in its descent to act upon the rear end of the feedingdevice and put its front end against the heel, theheel being yet clamped, but as soon as the feeding device meets the heel the latter is unclamped so that the operator with his hand upon the shoe may by pressing the heel against the acting end of the feeding device push said device against the stress of the springs or and 1.5, the follower f entering at such times one of the open spaces in the pattern cam, as far as permitted by the adjustable stud 5. When the feeding device has been moved inwardly until stopped by the stud 5 it occupies its second operative position, viz ':the position to insure the insertion of a fastening in the inner row of fastenings, said fastening being driven as herein provided for while the crank pin A completes a half rotation fromthe po-. sition Fig. 1, and during the succeeding half rotation the lever C is moved in the direction opposite the arrow on it in Fig. 1, thus feeding the stock.

The pawl b has extended from it a pin 25, shown in the detail Fig. 5, which engages one tooth d after another of the pattern cam D, turning said cam intermittingly step by step, a suitable spring 26 connected with said pawl and also with the stud 3 on the block a, normally acting to keep said pawl in operative position with relation to the teeth of the pattern cam.

It is usually desired when starting to insert fastenings in a heel, to drive the first fastening in the outer row and if the previous operation of the machine has consisted in driving a fastening in the outer row, difficulty will be experienced, unless means are provided whereby the pattern cam may be moved by hand whenever desired to put it into position to cause the first fastening to be driven in the outer row. The means herein shown consists of a hooked rod 26 connected at one end with an arm 27 of a rock-shaft 28, said rock-shaft having a second arm 29 suitably slotted to receive a projection at one end of arod 30 mounted in guiding cars 31 and having a handle 32 which may be engaged by the operator to pull the rod outwardly, and thereby cause said rod 26 to engage one of the teeth (Z of the pattern cam, turn it, and place the high part dof the cam in position to act upon the end of the follower, said rod 30, as soon as the operator removes his hand therefrom, being moved by a returning spring 10 surrounding it, thus returning the hooked rod 26 to its initial position. It is obvious that this device may be operated to cause the first fastening to be driven in the inner row, if preferred.

To prevent any backward movement of Ice .tooth, so that the pawl b in its descent to engage a second tooth-cannot under any circumstances turn the cam backwardly with it.

It will be noticed, see Fig. 2, that that portion of the follower which is acted upon by the projections d of the cam is beveledin order that the cam portions d in coming into their operative position will not strike a hard blow on the follower.

The machine with which my improved feeding device is herein illustrated and described will have suitable gripping devices to grip and feed the wire or fastening material that its end may be made to enter the heel or other part to be operated upon, but my invention for controlling the position of the feedingdevice to insure a plurality of different positions for the heel, that fastenings may be driven therein in two or more rows, may, it will be obvious, be employed to advantage in connection with a machine having any usual or suitable wire-feeding and fastening inserting mechanism.

I have shown the teeth of the feeding device as formed in a block B applied to the bar B by means of a screw 30, entering a threaded hole 30 in said device, said screw passing through a slot 45, see Fig. 4, in the block B, said. block also having preferably suitable guiding studs 38 which enter slots 39 in the feeding device, to thereby prevent any oscillation. of the removable end pieces B on or with relation to the body of the feeding device.

Figs. 1 and 2 represent, as stated, the feeding device in the position it occupies after feeding the stock and after having inserted a fastening in the outer row of fastenings, the end of the follower f in such position resting against one of the high parts d of the pattern cam. Now to insure the driving of the next fastening in the inner row the heel must be moved to the left, viewing Fig. a, in order that the part of the shoe in which the inner row of fastenings is to be driven may come into the position occupied by the outer row of fastenings in said figure, but before this can be effected the pattern cam must be turned to let the follower enter one of the spaces d thereof, and the lever C must be turned to release the feeding device and let it return to its starting position. Also the leg B must be lifted and be again depressed, and this will be done while the shoe is clamped. The acting end of the feeding device having been brought in contact with the heel, the stock being then unclamped,

the operator will push, as stated, the shoe and the feeding device backwardly toward the pattern cam a distance determined by the position of the eccentric stud 5, and thereafter the fastening will be inserted in the position or line demanded for the inner row of fastenings.

The pattern cam is represented as having two full portions and two spaces, each occupying proper portions of said cam, that the I may all come into operative position in one full rotation of the pattern cam, such a pattern cam providing for inserting fastenings in two rows, each row being a counterpart of the other with the exception that the fastenings in one row are preferably staggered with relation to the fastenings of another row, or the fastenings of the inner row are spaced, it may be, equi-distant between the fastenings of the outer row, and vice versa, such driving of the fastenings in two rows and staggered adding very materially to the appearance of the tread end of the heel. It will be obvious that while the cam herein shown presents two faces, that no invention would be required to so construct the cam portion (1 as to make of it two cams each presenting a face occupying different distances from the longitudinal central line of the cam, each face controlling one row of fastenings, the spaces controlling a third row, so the invention is not limited to the shape shown for the pattern cam, nor to the number of its high and low points, nor to the devices represented for imparting to the said cam a step by step rotation and periods of rest.

I have herein shown the fastening wire as quadrilateral in cross-section, but this invention is of course not limited to the particular shape shown of the fastening wire, and it may be of any usual or suitable shape commonly employed in the manufacture of boots and shoes.

Having described my invention, what .l claim as new and desire to secure by Letters Patent, is

1. A machine to drive fastenings, comprising a stock support, means to insert fastenings, a feeding device, means to actuate the feeding device to feed the stock laterally, said feeding device being movable backwardly and forwardly, means to determine the rearmost position of said feeding device, and means acting intermittently to move the feeding device forwardly whereby the stock may be put in position to receive fastenings alternately in different rows.

2. In a machine for inserting fastenings, a feeding device, mechanism to move the feeding device forward to engage the stock, and independent means normally inoperative and arranged to co-operate with said mech anism to permit the stock to be so placed that the initial insertion of a fastening shall occur,

at the will of the operator, in any one of a plurality of predetermined positions relative to the edge of the stock.

'3 In a machine of the class described, fastemng inserting mechanism, a device to con tact with the edge of the stock and feed it, yielding means to force said feeding device toward the operator, stops to determine the posltion of said device as the operator presses it back with the stock, and means controlling the operation of said stops whereby the shoe may be positioned to receive the fastenings alternately in different rows.

4. In a machine of the class described, a feeding device, a pattern cam, means to operate it, a cam leg, a follower engaged by said. leg and co-acting with said cam to change the position of said leg and feeding device and provide for the insertion into the stock of fastenings'at different distances from the edge thereof.

5. In a machine of the class described, a feeding device, a pattern cam, means to operate it, a cam leg, a follower engaged by said leg and co-acting with said cam to change the position of said leg and feeding device and provide for the insertion into the stock of fastenings at different distances from the edge thereof, and means to actuate said feeding device to move the stock and space the fastenings at the proper distances apart along the edge of the stock. 7

6. In a machine of the class described, a feeding device, a pattern cam, means to move it, a cam leg acting upon the inner end of said feeding device, and. means to control the position of said cam leg with relation to the center of said pattern cam to thereby place the acting end of the feeding device alternately in different operative positions.

7. In a machine of the class described, a feeding device, a pattern cam, a follower actuated by said pattern cam, and a cam device interposed between the feeding device and the follower.

8. In a machine of the class described, a feeding device, a pattern cam, a follower actuated by said pattern cam, and a cam device interposed between the feeding device and the follower, combined with a spring acting normally to move the feeding device toward the center of the pattern cam.

9. In a machine of the class described, a feeding device, a pattern cam, a follower actuated by said pattern cam, and a cam device interposed between the inner end of the feeding device and the follower, combined with a spring acting normally to move the feeding device toward the center of the pattern cam, and a stop to control the extent of such movement of the feeding device.

10. In a machine of the class described, a pattern cam, a feeding device, a leg having a member provided with a cam, and adapted in its movements to permit the feeding device to retire from contact with the shoe heel preparatory to the return of said feeding device into its starting position, means intermediate said leg and said pattern cam to insure two operative positions for said leg to thereby insure two operative positions for the acting end of said feeding device.

11. In a machine of the class described, a

feeding device, in combination with a pattern cam for determining the operative positions of said feeding device, means for actuating the pattern cam, and a spring for moving the feeding device away from the pattern cam while the latter is being actuated, said spring permitting the feeding device to be forced toward the pattern cam by the pressure of the work against it.

12. In a machine of the class described, a feeding device, means determining the operative positions of the acting end of said feeding device, said means comprisingamong its parts a cam leg, a spring connected with said leg for yieldingly holding it in one operative position, combined with a second spring connecting said feeding device with said leg.

13. In a machine of the class described, a feeding device, a pattern cam, means to move it to put the acting end of the feeding device in any one of a plurality of operative positions, and means to adjustably support said pattern cam.

14. In a machine of the class described, a feeding device, a pattern cam, a follower, a spring acting normally to put said follower out of the range of movement of the said pattern cam and thereby place the end of the feeding device in its normal position to insure the insertion of a fastening in a row nearest the edge of the stock, a device interposed be tween said follower and the inner end of the feeding device, and a stop to limit the extent of backward movement of the feeding device by the operator pressing the stock against the acting end of said feeding device.

15. In a machine of the class described, a feeding device, a pattern cam, actuating means to operate it intermittingly to change the operative position of the acting end of the feeding device, and a device under the control of the operator to turn said pattern cam independently of its actuating means.

16. In a machine for inserting fastenings,

the combination with means for inserting fastenings alternately in different rows, of means co-operating with said first-named means for determining the row in which the initial insertion shall be made.

17. In a machine for inserting fastenings, the combination with means for inserting fastenings, of means for causing the fastenings to be inserted alternately in different rows, and means for controlling the last -named means whereby the'initial insertion of a fas- IO to the rearward movement of the feeding device whereby the lastenings may he inserted alternately 1n dill'erent rows.

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

CHARLES H. SM I'l I'I.

WVitnesses HOMER W. IIERVEY, E. A. TRIPP.

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