US548596A - Staple-machine - Google Patents

Description

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Patented Oct. 22, 1895.

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G. E. RYAN. STAPLB MAGHINE.

No. 548,596. w

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G. H. RYAN. STAPLE MACHINE.

No. 548,596. Patented Oct. ZZ, 1895.

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No. 548,596. Patented Oct. 22, 1895.

mvewtoz WMM/120Mo ANDREW IERHAMJHOYD'UDIDWASH INGIUBLDS.

UNITED STATES PATENT OEErcE.

GEORGE H. RYAN, OF BROCKTON, MASSACHUSETTS.

STAPLE-MACHIN E.

SPECIFICATION forming part of Letters Patent No. 548,596, dated October 22, 1895.

Application filed December 23, 1890. Serial No. 375,597. (No model.)

To all whom it may concern:

Be it known that I, GEORGE H. RYAN, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented a certain new and useful Improvement in Staple-Machines, of which the following is a speciication.

This invention relates to machines for making insulating saddle-staples; and its object is to improve the construction of themachine heretofore employed for the purpose of making such staples.

The invention consists in the various novel features and combinations as fully hereinafter explained, and pointed out by the claims.

In the accompanying drawings, Figure 1 is a plan view of a machine embodying the invention. Fig. 2 is a side elevation. Fig. 3 is a front elevation. Fig. 4 is a side elevation in section on line A 4: of Fig. 3. Fig. 5 is a detail side elevation of the locking-clamp. Fig. 6 is a side elevation on line 6 6 of Fig. l. Fig. 7 is a detail of wire-straightener. Figs. 8 and 9 are detail plan and sectional views, respectively, showing the staple-blank in position to be operated upon. Figs. 10 and 1l are views of the same parts, showing position ofthe parts after completion of operation. Fig. l2 is a detail plan of follower. Fig. 13 shows a blank staple and insulatingstrip before bending, and Fig. 14C shows the finished staple ready for use.

A base plate or table A, mounted on legs A2, supports the mechanism. At the sides of the table are bearings A', carrying the shaft B. Through this shaft B, driven by any suitable power, the various functions of the machine are accomplished. Fastened to one end of the shaft is the cross-head B', carrying the adjustable wrist-pin B2, to which is applied the coupling C. The lower end of this coupling-rod connects with universal joint on the end of rocking angle-lever O, hung at C2. This rocking lever is linked to slide-block D offeed mechanism by bar C3. By these means a reciprocating movement is imparted to slide a block D.

A wire o. is led from a suitable carrying1'eel through straightener S, securely bolted to slide-rod D', consisting of a series of horizontal and vertical rolls S S2, then over slide-block D of feeding mechanism. This slide-blockD is supported at one end on the table A and at the other on rod D. Extending upward from it are two pairs of arms D2 for the purpose of supporting swinging grippers D3, in the lower front end of which bits D4 are secured. Applied to the rear upper end is a sti spring D5, tending to keep the bits pressing down on wire rz. This arrangement insures a positive grip on the wire when the carriage is advanced toward the right hand or into the machine; but ou its out-ward excursion the wire is released and the gripper slides back without disturbing the wire. Thus during one half of the revolution ofthe main shaft sufficient Wire to form a staple is fed into the machine, and during the other half-revolution it remains stationary to allow the cutting and forming operations to take place. Now, the wire having been fed forward over adjustable block E into and between cutting-jaws G and l, a locking-clamp E2, pivoted at E3, and operated by cam E4 on the main shaft, moves down upon the wire and securely binds it against adjustable block E', thus preventing any possible shifting of the wire during the backward movement of the gripper-carriage and while the cuttingjaws operate. The cam E4 iinpinges -upon vertical arm E3 of clamp E2 and works against the tension of spring E5. As an additional means of security against wire shifting, the lower cuttiugiiaw I, on which the wire rests, is provided with a gage-block l', on one end of which a guide-tinger i is formed, and at the other end an adjustable linger t" extends over and about the pathl of the wire a. It has been found necessary in practice to provide this clamp and the gage-block with its guideingers, in order to prevent twisting, slipping, and displacement of the wire, especially in using the larger sizes. The wire now being held, the upper jaw G, carrying cutting-tools G' G2, is pressed downward and through wire a, cutting one end b and a piece c out of the middle of the proposed staple. This movement is accomplished by cam H on the main shaft. The jaw G is pivoted to bearings g, adjustable endwise, and is held up against the cam by a stiff leaf-sprin g g. In the head of jaw G are secured the cutting-tools G G2 IOO by means of bar g2, securely bolted to the front of the head. As a means of adjustment wedges and adjusting-bolts are applied, as clearly shown in the drawings. The stationary jaw or plate I, which works in conjunction with the upper jaw G, is adjustably fastened to base-plate A.

Supposing now the wire to have been cut at one end and at the middle, as described, we pass on to the next feature-the insertion of the insulating strip. A reservoir or slideway J, containing a supply of vulcanized fiber or other non-conducting insulating-strips d, is supported at one end by lug J', bolted to base-plate A,and at the outer end to bracket and rod J2. The strips d are fed forward by means of weight J4 and a cord passing over pulleys J 5, attached to block J 3. These strips are pushed one at a time against die-block K, and as the die-block K descends, as will be described farther on, the shoulder or edge catching on the top ledge of the strip pushes it down into the cut formed in the stapleblank and onto block L, as shown in Figs. 9 and 11. A followerj prevents the strip in its downward movement from shifting. The tension of bladespring j is such as to press it against the end of the die. This also assists in properly placing the strip in the staple blank. The die carriage K slides vertically in ways K2 and is pushed downward by cam K3 on the main shaft and upward against the cam by coiled spring K4, confined between the lug on the carriage and a strap fastened to the bottom of the base-plate. Simultaneously with the insertion of the insulating-strip a finger M begins to move forward horizontally,bringing up against the exact middle of the staple-blank just after the strip is in place, thus securely pinioning them against die-block K. This movement is accomplished by means of cam M on the main shaft acting upon the upper end of pivoted lever M2, the lower end of which is coupled with horizontal lever M2, pivoted to base-plate A. The outer end of lever M3 is retracted by spring h' 5 acting against cam M. The inner forked end embraces pin M4, attached to finger M, said finger sliding in compressor O, now to be described. As soon as the staple blank and strip are held fast by the finger M against die K, (and, by the way, this and the operation 'of cutting the succeeding blank are accomplished at the same period,) we are ready for the final operation-the bending of the blank into staple form. A carriage P, sliding in ways P P', is actuated by means of cam P2 on the main shaft, working on horizontal arm of pivoted right-angled lever P3, to the lower arm of which is coupled the connectingrod P4, attached to the rear end of the carriage P. A coiled spring P5 and leaf-spring P6 act together against cam P2 to return the carriage. The compressor O, bolted to the carriage P, consists of two bifurcated xed jaws O O and two swinging jaws or pinchers R R,

pivoted at R R. Springs r r tend to spread pinchers R apart. As the carriage advances, the ends of the staple-blank lying in the grasp of the bifurcated jaws are bent back over the die K, forcing it to assume the desired shape of staple. Ofconrse the insulating-strip d isbent with the blank and is of such a size as to be grasped by the corners e e of the blank and slightly squeezed, thus being firmly retained within its embrace. Just before the carriage reaches the forward limit of its movement the tail ends of pinchers encounter a stop or post O2, adjustably secured to baseplate A orblock L, thus spreading them against the tension of springs rr and closing the front ends on the staple, giving the staple the exact shape and a permanent set. retreats, the pinchers open, releasing the staple, which thereupon falls down through opening Q in the base-plate into any suitable receptacle. At the same time as carriage P retreats die-carriage K and cutting-jaw G ascend, and the finger M returns to starting position. Now, all these parts being at rest, the feeding mechanism operates to carry wire sufficient to form another staple into the machine.

The advantages of this machine over the original are, first, a positive feed for wire; second, a clamp for holding wire after it has been fed forward into cutting position; third` a guide plate and fingers through which wire is fed, thus preventing displacement and insuring a straight feed for wire; fourth,a follower in insulating-strip feed, insuring the proper placing of insulator within stapleblank; fifth, a better mechanical arrangement of the entire machine.

What I claim as my invention isl. In staple machines, the combination with the wire bending devices and a carrier pushing strips of insulating material into position on the inner side of the staple before it is bent, of la spring pressing-plate or follower forming an expansible throat through which the insulating strips are pushed by the carrier, substantially as set forth.

2. In staple machines, the combination with the staple bending devices, of a reservoir presenting strips edgewise to the machine, a carrier pushing said strips singly into position upon the inner side of the staples before they are bent, and a spring compressor plate or follower acting to hold the insulating strips in the carrier during its movement, substantially as set forth.

3. In staple machines, the combination with the compressor jaws of two additional setting jaws carried by the compressor jaws and acting on both legs of the staple to give it a final set at the end of the movement of the com-v pressor jaws, substantially as set forth.

4. In staple forming machines, the combination of the advancing compressor jaws for bending the staple with two eXtra jaws or pinchers carried by levers pivoted upon the As the carriage IIO on the inner sides of the staples, a forming block, compressor jaws bending the staples over the forming block, a carrier pushing insulating strips edgewise between the shoulders of the staples before theyr are bent, and a spring plate guiding the insulating strips in their movement, all substantially as set forth.

This specification signed and witnessed this 1st day of November, 1890.

GEORGE H. RYAN. Witnesses:

RICHD. N. DYER, L. STIERINGER.

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