US1163140A - Staple. - Google Patents

Description

L. B.-GIRARD.

STAPLE.

APPLICATION FILED FEB. 3. 1914.

1,163,140. Patented Dec. 7, 1915.

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tlmllmm u' 71 and useful Staple, of which the 1 UNITED "ST EA IATENT,OFFI

LoUIs B. GIRARD, or Los ANGELES, CALIFORNIA, nssrenon o THE ailment/mum FACTURINGGOMPANY, or LOS ANGELESNCALIFORNIA, A CORPORATION or CALI- rennin.

ToaZZ whom itmay concern:

Be it' known that I, LOUIS B. GIRARD, a citizen of the United States, residingat Los Angeles, in the county of LosAngeles and State of California, have invented a new following is a specification.

This invention relates to a particular form of staple, and one of the objects of the invention is to provide a staple with prongs having the edges of the points of the prongs v formed'with sharp edges, so as to enable the points of the prongs to be driven easily and accurately into a body and without twisting of the prongs or staple. V

Figure 1 is a vertical section of the dies for forming the staple, showing the position in which the staple has been cut and bent at its end portions only. Fig. 2 is a section online w m? in Fig. 1. Figs. 3 and 4 are views similar to Figs. land 2, respectively,

showing the position in which the staple has been severed. Fig. 5 is a perspective of the upper die body. Fig. 6 is a perspective of the base or lower die body. Fig. 7 is a plan view thereof, showing the stock strip. Fig. 8 is a perspective of the "form over which the staple is bent. Figs. 9 and lO are plan views of different length staple blanks made from thesame stock strip. Fig. 11 is a 01 oss section of the stock strip. Fig. 12 is a perspective view of the staple. I

My improved staple may be made by any suitable means, for example, by the die means shown in Figs. 1 to 8 of the drawing, and comprising a base plate 78 formed with a vertical slot 79 so as to constitute the 82; an upper die member 27 provided with vertical prongs 28, adapted to enter said slot on either side of said anvil, anda severing member 29 adapted to slide in a way 27 in member 27, between prongs 28. Base member 78 is provided with a way 81 in which the anvil member 80 slides, and with. a recess or channel 74 in which the stock strip 48 extends, a guide pin 73 being provided for said stock strip, and a stripper 86 being mounted over the stock strip. A slot 84, for receiving the forward end of the stock strip, is formed in member, 80, above the anvil 82, and said member 80 is provided, above said slot, with an inclined face portion 83. I have also shown in Figs.

. STAPLE.

Specificationof Letters Patent. Fatented Dec. 7,1915.

Application filed. February 3, 1914. Seria1'No.8 16,151. I

1 to a work support 20,"and a staple clenching die 24 mounted to slide in said Base'memb'er 78 may have work sup port.

a die plate 71'for1ning a cutting member ad frontface 75 of the slot 7 9, which serves as a stop therefor, the strip being placed more or less'obliquely to said face according to the length of staple to be formed, and being centralized with reference to slot 79 by the guide pin 73 engaging with its outer edge.

The die member 27 ismoved down, so that its prongs 28'pass on into the vertical slot 79, and cut the stock strip at each side and bend the cut portions down at either side of the anvil 82, thisposition of the parts being shown in Figs. 1 and 2. The severing member 29 is then brought down, as shown in Figs. 3 and 4, so as to sever the stock strip, p

between the cuts previously made, and there by sever the formed staple from the stock strip and by a continuation .of the same movement, drive the staple downward out of the die means. With the means herein shown, this movement of the staple drives it into the work, supported on the work holder 20, and the die 24 then clenches it, but the present invention relates to the staple as formed by the die means, irrespective of any such driving and clenchingoperations.

As the stock strip 48 is fed in a direction oblique to the stop face 7 5' and the cutting edge'of the die member 71, it follows that the ends of the severed portion of the strip forming the blank for the staple are inclined or oblique with relation to the length of the 1 strip, as shown in Figs. 9 and 10,-so as to form points which will penetrate the paper, wood or other material which is being stapled. The length of the staple between the prongs thereof is determined by the width of the forming projection 84 and the length of the prongs is determined by the excess of length of the blank cutfrom the stock strip v s this. operation to always keep the stock strip -.centralized with respect to the cutting dies j a The slot J79 and prong severing dies 28 Working therein are sufficiently Wide to; out

the prongs in any position to which the 15 7 stock strip inay'be adjusted. v, j I The edges of thestook strip are beveled t0 form a sharpedge on both sides asindicated at 5E8 in'Fig. '11, The result'of this is that when the staple is, formed there is 'a sharp tapering edge as as shown in" Fig. '12

. .formedoneaohprong and With sharp points 4.8 cuts into the wood and allows the prong Copies of thi sipatent mey be obtained for p v v v p v v sh gt ec 88. In" driving, the staple the beveled edge 48 toinove straight downward into theiv'ood Without being shoved oil? to one side which is therca se Where the edge 48-isasimplefiat edgeias in other form-S of staples "Inidriving the present staple the prongs pass down Without being twisted or without the staple being turned from its regular position;

'WhatIclaiIn is: I

Astapl e formed from a flat strip of metal having its ends oblique to the Width of the strip so'as to form prong points for the-stapleand having said pointed end portions bent transversely. to, the middle portion of t'he'staple, the oblique edges of said pointed edges.v

Inntestimony WhereoflI have hereunto set my] hand at Los Angeles, California this 26th day of Ja n ary, I I vLOUIS B. G-IRARD. r In presence of Y ARTHUR I. KNIGHT, p 3 Lo mA Nn iDURROW,

five cents each, by addressing the f cominissi oner .of Patents prong ends being be eled to form sharp 7

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