US394217A

US394217A - Machine for making staples

Info

Publication number: US394217A
Authority: US
Publication date: 1888-12-11
Anticipated expiration: 1905-12-11

Description

(No Model.) 2 Sheets-Sheet 1. W. G. SLATER.

MACHINE FOR MAKING STAPLES.

No. 394,217. atented Dec. 11 1888.

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(No Model.) 2 Sheets-Sheet 2. W. G. SLATER.

MACHINE FOR MAKING STAPLES.

No. 394,217. Patented Dec. 11, 1888.

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UNITED STATES PATENT OFFICE.

VARREN G. SLATER, OF FREMONT, ASSIGNOR TO THE PENINSULAR NOVELTY COMPANY, OF GRAND RAPIDS, MICHIGAN.

MACHINE FOR MAKING STAPLES.

SPECIFICATION forming part of Letters Patent No. 394,217, dated December 11, 1888.

Application filed March 2'7, 1888. Serial No. 268,617. (No model.)

To all whom, it may concern.-

Be it known that I, XVARREN G. SLATER, of Fremont, county of Newaygo, and State of Michigan, have invented an Improvement in Machines for Manufacturing Button-l asteners, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to provide an eflicient and simple machine for forming wire staples or fasteners especially adapted, among other things, to be used to secure buttons to boots or shoes.

My invention consists, essentially, in the combination, with a former and blocks on opposite sides thereof, arranged one with relation to the other to form substantially wedge-shaped spaces, of a cooperating die consisting of two jaws to enter the wedgeshaped spaces and elongate the metal to form the points of the staples, one of said jaws being movable with relation to the other, substantially as will be described.

Other features of my invention will be pointed out in the claims at the end of this specification.

Figure 1 is a front end elevation of a stapleforming machine embodying my invention; Fig. 2, a detail, on an enlarged scale, showing the former with a staple thereon and a part of the die co-opcrating with the said former; Fig. 2-3, a detail in plan of the knocker-otf and the mechanism tolock the same; Fig. l, a sectional detail to more clearly show the knocker-olli' and mechanism to op crate it; and Fig. 5, a detail in the line J12, Fig. 2.

The bed A has secured to or forming part of it an upright frame, (I, which supports, in suitable bearings, a main shaft, a, upon which is mounted a suitable driving wheel or pulley, (L The shaft a has mounted upon it an ec centric, (1", (shown by dotted lines,) connected, as shown, by an eccentric strap, a, and rod (L5, to a lever, a", of a wire-feed mechanism, consisting, as herein shown, of two rolls, (1 a (see dotted lines, Fig. 1,) hai'ing their journals in suitable boxes, a a in uprights C612 on the bed A, the journal-box a being shown adjustable with relation to the journal-box a by means of a set-screw, (1 The feed-roll a as shown, has mounted on its journal a ratchet-wheel, b, with which eng ges a pawl, I), carried by the lever a, the said roll being rotated the distance of one tooth at each revolution of the main shaft.

The wire to be made into staples is fed by the feed mechanism through a suitable guideway, U herein shown as partially supported by a base, I), on the bed of the machine. The base U is provided, as shown, with an opening to receive a block, b having secured to or forming partot' it: a former, If, herein shown as inclined from a perpendicular, (see Fig. 2,) for a purpose to be hereinafter described.

The wire is fed by the feed-rolls through the guideway b across and in line with the former, and when in correct position with relation to said former a die, comprising, as herein shown, a fixed jaw, c, and movable jaw c, the latter being pivoted to the fixed jaw, as at c (see Fig. 1,) is brought into engagement with the wire by an eccentric, (1 ,011 the main shaft a, connected by eccentric strap and rod 0 to a plunger or slide block, c movable in suitable guideways, c, in the frame a, the said fixed jaw being secured to or forming part of the said plunger. The former b and its block I) are placed in correct position with relation to the die, as herein shown, by means of the adj listing-blocks d d, the block (1 being kept in engagement with the block b, as shown, by the ad 'ustingascrew (P, the said blocks forming with. the former substantially wedge-shaped spaces, into which jaws of the die enter to form the staples, as will be described.

Referring to Fig. 2, the lower edge, 2,01 the fixed jaw 0 forms one member of a cutter, by which to sever a portion of the wire to form a staple, the co-operatin cutter member being the upper edge, 3, of the part c of the guideway through which the wire is fed, the fixed jaw being made to pass down over or embrace the part e the jaw c being cut out for that purpose. (bee Fig As the wire is severed, the loose portion is bent about the former by the co-operating die, one leg, c, of the staple being formed by the fixed jaw c, which acts to elongate or draw out the wire to a point, the said fixed jaw being perpendicular,while the former is inclined to it, as clearly shown in Fig. 2. As the die descends to form the staple, the movable jaw, beveled or rounded at its lower end, as at 6, acts on the wire and bends its free end about the former, the said movable jaw in its descent striking the beveled or inclined face 6 of the block (7. and forcing the wire about the former to form the leg 6 of the staple. The face 6 of the adjusting-block d, as herein shown, is not inclined to the same angle as the side 12 of the former, but is at such angle with relation to the said side that when the movable jaw operates upon the wire to form the leg 6 the said jaw will elongate or draw out the wire to a point, as shown in Fig. 2. The staple thus formed is dislodged from the former by a knocker-off, herein shown as a bent finger, e

' of substantially the same shape as the completed staple, it being adapted to straddle the former, the said knocker-off being located be hind the former, as shown in Fig. 4.

The finger c has secured to or forming part of it a rod, 6 secured to a block, 6, fitted to slide in a hole or socket, e in an upright, 6 upon the bed A, the said rod being shown as inserted through a threaded bearing, e. The hole or socket 6 contains a spring, f, which acts against the block 6 to force the finger forward to knock off or dislodge the staple from the former. The block 6 is provided with a pin or stud, f, with which co-operates a locking device, herein shown as a tooth,

pawl, or projection, f (indicated by dotted lines, Fig. 4,) on the lever f pivoted to the upright, as at f the said tooth or projection being maintained in engagement with the pin or stud f, as herein shown, by a flat spring, f secured to the block c the said spring pressing upon a pin or stud, f, on the lever f. The lever f at one end, as shown, has pivoted to it, as at f a dog, f which is turned on its pivot by one arm, g, of a lever, g, pivoted, as at g to the block a and having its other arm pivoted, as at 9 to the end of a link, 9, connected, as shown in Fig. 1, to a depending arm, g on the plunger.

Normally the knocker-off occupies the position shown in Fig. +1, the block 6 being locked in the position shown by the tooth or projection f \Vhen the plunger descends to form the staple, as above described, the lever g is turned on its pivot by the link g the arm g moving in the arc of a circle toward the right in Fig. 4, it turning the dog f on its pivot. The arm g is moved toward the right until it clears the pivoted dog, whereupon the latter is restored to its normal position in the path of movement of the said arm, as herein shown, by a spring, 72 having one end fastened to a shaft or stud, h, and its other end attached to the said dog. hen the plunger retreats after forming the staple, the arm g is moved toward its normal position at the left in Fig. 4, and as the said arm is moved back to its normal position it strikes against the pivoted dog; but the latter is prevented from turning on its pivot by a stop, (shown as a lug, 71 on the lever fi) so that as the plunger continues to retreat the lever f through the said dog and stop, is turned upward, it being turned on its pivot f until the tooth or projection f is disengaged from the pin f on the block. 6, whereupon the spring 1' expands and forces the block and its attached rod and finger forward to dislodge the staple from the former.

hen the block 6 is released and has been forced forward by the spring f to dislodge the staple from the former, the arm g at such time is substantially below the dog f so that the block at its extreme forward movement strikes against the arm g, and is again forced back to be locked in its normal position by the said arm as the latter is moved into its normal position. (Shown in Fig. 4.)

The gist of my invention consists in elongating or drawing out of the ends of the staple to form the point, and this is accomplished by so constructing the former If and blocks d d with relation to each other that the space on either side of the said former into which the die enters is substantially wedge-shaped, the said space being widest at its top, so that the farther a jaw of the die, as c, enters the space on one side of the former the greater the force with which the said jaw acts on the leg of the staple between the jaw and the formerthat is, the farther the jaw enters the space the greater the drawing or elongating effect on the leg of the staple to form the point. The wedge-shaped space is formed in the present instance by inclining the former, as shown in Fig. 2.

1. In a staple-forming machine, the combination, with a former and blocks on opposite sides thereof, arranged one with relation to the other to form substantially wedgeshaped spaces, of a co-operating die consisting of two jaws to enter the wedge-shaped spaces and elongate the metal to form the points of the staples, one of said jaws being movable with relation to the other, substantially as described.

2. In a staple-forming machine, the combination, with a former and blocks on opposite sides thereof, arranged one with relation to the other to form substantially wedgeshaped spaces, of a co-operating die consist ing of a fixed and a movable jaw, the said jaws acting to elongate the metal to form the points of the staples, substantially as described.

3. In a staple -forming machine, a wirefeeding mechanism, a cutting mechanism to sever the wire, a former, and blocks 61 d, to form with said former substantially wedgeshaped spaces, combined with a die consisting of two jaws to enter said wedge-shaped spaces and bend the wire about the said former, the said die acting on the metal to I of the staple, and with a knocker-oif and form the points of the staple, substantially as described.

4:. In a staple-forming machine, a wirefeeding' mechanism, a cutting mechanism to sever the wire, a former, and blocks (Z d, to form with said former substantially Wedgeshaped spaces, combined with a die consisting of two jaws, one movable with relation to the other, to enter said spaces and to bend the wire about the said former, the said die acting to elongate the metal to form the points mechanism to operate it to dislodge the completed staple from the former, substantially as described.

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

WARREN G. SLATER \Vitnesses:

O. M. CONE, B. DEWAR.