US351628A - Staple-machine - Google Patents

Description

2 Sheets-Sheet 1. I

(No Model.)

G; DOOLITTLE.

STAPLE MACHINE.

Patented Oct. 26, 1886 fimfigiz N. PETERS. Phntoiilhognphzr, Washington.

(No Model.) 2 SheetsF-Sheet 2.

G. DOOL ITTLE.

STAPLE MACHINE.

No. 351,628. Patented 0013.26, 1886.

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die oyejo owze izpw N PETERS. Pholoiilhogmphar. Washington. D C,

UNITED STATES PA T Clarice.

GEORGE DOOL'ITTLE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE PENINSULAR NOVELTY COMPANY, OF GRAND RAPIDS, MICHIGAN.

STAPLE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 351,628, dated October 26, 1886.

Application tiled March '27, 1886. Serial No. 196.782. (No model.)

' To all whom it may concern.-

Be it known that I, GEORGE DOOLITTLE, of Bridgeport, county of Fairfield, and State of Connecticut, have invented an Improvement in Staple-Machincs,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 toimprove .the construction of machines for the manucurved or oval in cross-section; also, in a die having a concaved recess, two shoulders, and

side walls leading from said shoulders,a former having a nose and shoulders,aformer-carrier, and means to reciprocate or operate said carrier automatically, combined with a guide for the wire, a cutter to sever thewire in the said guide, and feed mechanism to move the wire intermittingly, substantially as will be described.

. Other features of my invention will be hereinafter described, and pointed out in the I claims.

Figure 1 is a top or plan view of a stapleforming machine constructed in accordance with my invention; Fig. 1, a partial section to show one of the cams on the secondary shaft; Fig. 2, a transverse section on line w m, Fig. 1, it showing clearly the cutter and formingdie; Fig. 3, a longitudinal section on line a? x of Fig. 1; Fig. 4, a detail View of the cutter; Fig. 5, a detail to be referred to, it showing in plan view the die,t-he former,and the notched guide through which the wire passes, the guide being notched to enable the cutter to cut the Wire. Fig. 6 showsan elevation and section of a staple made on the machine shown in the drawings; Fig. 7, aface view of the die; and

I Fig. 8, face view of the former, both being enlarged.

The bed-plate A of the machine, supported on legs A, has suitable bearings for the main shaft A and the secondary shaft A the said shafts being geared together by the gears 01. a". The shaft A' has attached to it cam-hubs aflf, and h, and the shaft A has cams k, e, and m.

In the machine herein to be described the wire or strip of metal to be made into staples is taken from a suitable reel or spool (not shown) and led between usual straighteningrolls, a, and passed intoand through a guide, a, made (see Fig.2) as a tube, which is screwthreaded externally, and thus made adj ust-able horizontally to serve the additional purpose of a stop for the feed-carriage b,adapted to slide in ways in a plate,b,attached to the bed-plate, the said carriage being moved forward and backward by a lever, a having its fulcrum a in a'bearing, a", the stem or foot of which (not shown) is fitted loosely into ahole in the bed.-

plate A. The lever a has at one end a roll,

2,which is acted upon by the (am a aspri'ng, 1), working antagonistically to the cam, the forward end of the said leverhaving a socketpiece, b provided with a screw threaded shank, b, which, extended through the lever (47, has a nut, if, applied to it. The stud b on the feed-carriage b is provided with a hole, b, for the passage of the wire, and about this stud are placed two washers, b b, between which the wire also passes, the said stud above the said washers being surrounded by the socket-piece b, which latter has a straight vertical movement on the said stud by reason of the shape of the cam a so as to cause the said washers to intermittingly clamp the said wire, hold it firmly when the wire is to be fed forward,and release it when the feed-carriage is to he moved backward.

The wire fed by the feeding devices described, or by any other well-known wire-feeding device,is passed through a guide,cl", (shown best in Figs. 2 and 5,) the said guide being notched at one side, as at 3, for a depth sufficient to intersect the wire-passage in the guide, said notch permitting the wire-cutter d (see Figs. 2, 3, and 4) to descend into the said notch and sever the wire, the cutting-edge of the wire cutter being shaped substantially as ICC shown in Fig. 4, so that when severing the wire a V-shaped portion is cut from the wire, leaving oppositely-beveled ends to constitute points for two staples.

The wire-cutter is attached to a plate, J, by a screw, d, the plate being adjustably secured by screw (1' to a plunger, d", fitted to slide vertically in a guidebloek, 6*. This plunger d is moved vertically by the lever c, pivoted at e on a suitable upright, the said lever being acted upon by the cum 0, the spring 6 keep ing the said lever pressed in contact with the said cam.

The die h-a block of steel cut out, as best shown in Figs. 5 and 7, to form arecess to conform in shape to the shape of the curve of the staple or fastening to be made, (see Fig. 6) has its shank h extended through the guide 0*.

Referring to Fig 5, it will be seen that this die has a substantially semicircular recess, a, and next it, at each side, shoulders 215 and vertical walls a n, the recess a" shaping the staple at 11 and the shoulders n causing the shaping of the shoulders 21 while-the vertical walls f determine the shape of the legs a The face of the die 71" (see Fig. 7) is grooved horizontally at 71", the bottom of the said groove being substantially circular, so as to preserve the round shape of the wire used at the top of the crown of the staple, the inner side of the crown, especially below the portion n-",being also kept round by providing the nose a of the former fwith a groove, it, (see Fig. 8,) the bottom of the said groove being rounded. This leaves both the upper and lower side of the part 16* of the staple rounded, as shown in the section Fig. 6.

The former f referred to is attached by screw f to a carrier, f, fitted to slide in a carriage, f-', adapted to slide horizontally between \i'zlysj""j", screwed to the bed-plate A. The carriage f 2 has at one end a roller, 8, which is normally kept pressed toward or against the cam h by the spring in, and said carriage supports a bent finger, f, secured to it by screws 12, said finger being slotted to permit the formerf to pass through it.

The carrier f is held within the carriage by plates 13 14, the one 13 acting as a back-stop for the carrier when moved backward by the lever k having its fulcrum at 7c, and slotted at one end to embrace a stud, It, on the carrier f, the said lever being acted upon by the cam Ir.

The hollow shank of the die receives within it a clearer, m shaped as best shown in Fig. 3, its inner end being reduced and surrounded by a spiral spring, m", which normally keeps the clearer retracted from the face of the die, the latter having a central hole, 15. hen a staple is to be discharged from the die, the clearer is pushed forward by the rod m jointed to a lever, m, pivoted at m", and acted upon by the cam m, a spring, a, keeping the said lever against the said cam.

In operation the wire is fedforward by the feed mechanism into the notched guide d, and when in such position the cutter d is thrown down, so as to enter the notch 3 of the said guide and sever the wire therein. As soon as the wire is cut the cam h on the shaft A hits the roller 8 and moves the carriagef forward, so that the bent finger f presses the cut strip of wire against the face of the die at the edges of the side walls, a, the said bent finger holding the ends of the wire against thesaid edges, while the former f, carried forward by the camf, acting on the roller f on the carrier f, presses the wire into the recess of the said die h"; to form the staple shown in Fig. 6, the groove h of the die and the groove a in the nose of the former permitting the wire to retain its rounded or oval form, as shown in said figure. After the said staple has been formed the carrier f is moved backward by the lever 7t, acted upon by the cam Ir, and as the carrier is thus moved the cam in on the secondary shaft acts on the lever m" to move the clearer m forward to dislodge the staple.

I clain1 1. In astaple-forniing machine, the diehaving a concaved recess, two shoulders, and side walls leading from said shoulders, and provided with a rounded groove, combined with a former having a nose and shoulders, and with a former-carrier and means to reciprocate or operate said carrier automatically, said nose having a rounded groove, said grooves enabling the outer face of the staple and the inner or under side of the crown thereof to be made curved or oval in cross-section, substantially asdescribed.

2. In a staple-forming machine, a die having a concaved recess, two shoulders, and side walls leading from said shoulders, a former having a nose and shoulders, a former-carrier, and means to reciprocate or operate said carrier automatically, combined with a guide for the wire, a cutter to sever the wire in the said guide, and feed mechanism to move the wire interniittingl y, substantially as described.

3. In a staple forming machine, feeding mechanism,substantially as described, to grasp and move the wire intermittingly, awire-guide notched at its side, and a substantially V- shaped cutter to sever the said wire and oppositely bevel the adjacent ends, combined with a die and a former, substantially as described, to produce from the severed pieces of wire a shapesubstantiall y such as shown.

In testimony whereofI have signed my name to this specification in the presence oftwo subscribing witnesses.

GEORGE DOOL'LTTLE.

Witnesses:

G. W. GREGORY, J. H. CHURCHILL.

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