US1397787A - Fastener for papers and other materials - Google Patents

Description

C. P. SIBLEY. FASTENER FOR PAPERS AND OTHER MATERIALS.

APPLICATION FILED NOV. 10, I920.

Patented Nov. 22, 1921.

UNITED STATES CEIDRIG PUTNAM SIBLEY,

OF DETROIT, MICHIGAN.

'IEASTENER FOR PAPERS AND OTHER MATERIALS.

Application filed November 10, 1920, Serial No. 423,143.

To all whom it may concern:

Be it known that I, Cnniuo PUTNAM SIBLEY, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a certain new and useful Improvement in Fasteners for Papers and other Materials, of which the following is a full, clear, and exact description.

This invention relates to a paper fastener of the self-piercing type represented in the well-known Challenge eyelet, which is manufactured under the patent to Edward L. Sibley, No. 358,225, datedcFebruary 22, 1887. It is desirable, in some cases, to mechanically feed and set such fasteners, but those, like the Challenge, which have a tubular barrel do not readily conform to feeding mechanism.

It is the object of the present invention to provide a self-piercing fastener which lends itself readily to use on or in connection with a feeding mechanism, without sacrificing any of the advantages of this type of fastener and still retaining its facility of removal.

The invention consists of a fastener, for use in connecting a plurality of sheets of paper or other material, having a substantially rectangular barrel iortion which may be and is here shown as a apted to be driven through the material to be fastened, and also having terminal flanges at its end opposite its driven end; these flanges being capable of being reverted in order to remove a set fastener when desired; the construction being such that the individual fasteners or series of such fasteners connected in a strip, may be placed in a clip or holder or raceway or magazine of a setting machine and fed by gravity or otherwise to the settingtools; and in, case of the strip form of fasteners, means may be provided for severing the successive fasteners as they are presented for setting; and as an alternative the fastener may be formed in the act of setting, as I will proceed now to explain and finally claim.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a erspective view of one form of fastener. ig. 2 is a plan View of a portion of a blank, from which such fastener may be made. Fig. 3 is a perspective View of a strip of connected fasteners. Fig. 4 1s Specification of Letters Patent.

Patented Nov. 22, 1921.

a sectional elevation illustrating the first operation in setting the fastener on pieces of paperor other material. Fig. 5 is a similar view showing the second operation, and Fig. 6 represents the final setting operation. Fig. 7 is a perspective view of another form of fastener; Fig. 8 is a plan view of a'portion of a blank from which it may be made; Fig. 9 is a perspective view of a strip of such-fasteners; and Figs. 10, 11 and 12 are elevations representing the three steps of settingthe fastener. Figs. 13, 14c and 15 are-diagrammatic elevations illustrating another form of the invention in which the fastener is formed in situ from a flat strip of metal and set in a series of successive operations.

Referring to that form of the invention illustrated in Figs. 1 to 6 inclusive, the fas tener has the substantially rectangular barrel l, the sides of which are substantially parallel, with the closed end 2, the open end 3 and the lateral flanges 4 on opposite sides of said open end. This fastener may be made in a variety of ways, either singly or in strips. For example, the flat strip 5, Fig. 2, may be cut crosswise from both sides nearly-to the center, as represented by the lines 6 and 7, so as to leave an unsevered portion 8 which serves to hold the fasteners in strip form, and ,then said strip is diepressed or otherwise formed into a substanlirially inverted U-shape, as represented in When thus manufactured, the fasteners are adapted for use in a machine having an automatic or 'other feed, such as clips, raceways or magazines, by which, the fasteners are successively fed one by one to the setting mechanism and severed as individually delivered.

As shown in Figs. 4, 5 and 6, fasteners of the character described are adapted to be driven through the material to be fastened, without previous perforation of the material, the barrel 1 being driven through the material in the direction of its closed end 2 until the flanges f abut against the back of the material, and then, by means of suitable setting dies or tools, this barrel is collapsed, as indicated in Fig. 5, and finally flattened down or extended out laterally, substantially parallel with the flanges and with the face if the material to be fastened, as indicated in Instead of manufacturing the fastener notches isbent up to form the parallel-sided barrel 11, Fig. 9. The other elements of this fastener. are in general the same as previously described and are so designated, Thls construction also lends'itself readlly to a feeding mechanism in a setting machine,-

where provision ismade for driving the barrel through the material to be fastened, as indicated in Fig. 1 (),and then collapsing it, as indicated in Fig. 11, and finally flatten- 'ing it down, as in Fig. 12, the strip being severed on the lines of the notches as each individual fastener is driven through the material to be fastened.

As a furtherillustration of my invention, reference is made to the construction shown in Figs. 13, 14: and 15, wherein aflat strip of metal 12, unsevered,or partly severed as in Fig. 8, is wound on a spool 13 and fed.

thence to suitable forming tools, comprising a pin 14: and a die 15, with the material 16 to be fastened superposed upon the strip. Upon the descent of the die, the strip of metal is drawn from. the spoolover the pin and forced through the material to be fastened, as shown in Fig. 14, anda fastener length severed by means of the complemental shearing blades 17 and thereupon, upon further movement of the die, the rectangular formation of the fastener is completed, as shown in Fig. 15 after which the barrel may be collapsed, as indicated in either Figs. 41 to 6 or 10 to 12.

In any case, the fastener may be removed from the. fastened material by reverting the flanges, as indicated by dotted lines in Fig. 6, and pulling it out in the direction of arrow 18, Fig. 6, without marring the material.

I have thus described a number of different ways of carrying out the principle of the invention, but wish it to beunderstood that I realize that the invention'is susceptible offurther variations within the scope of the'claims following. a p

In. all of the forms of the fastener herein on said sides, the fastener being open on the i other sides and the bottom. Thus the fas- :in the clip or raceway, and the open sides adjust them to the setting tools.

lVhile for convenience I have referred to myinvention as a paper fastener, it is to be'understood, also, that the fastenermay be used for fastening material other than paper, and consequently the claims will be understood asnot limited to the use of the invention for fastening sheets of paper.

hat I claim is l ,7 r r 1. A paper. fastener, composed of a strip of metal bent transversely into substantially rectangular form, and having a closed leading end and'an open end, said closed'end adapted to be passed through the material to be fastened, and a'pair of parallel sides terminating in laterally extended flanges next to the open end, the other sides being open. 1

2.- A paper fastener, made from a flat narrow strip of metal bent in the middle transversely, thereby forming substantially paral-' lel and flat sideswhich constitute the selfpiercing element of the fastener, the edges of said sides being in alinement and parallel, and the ends thereof bent outwardly to form the flange or base of the fastener, the other sides and the end next tothe flange being open. 7 1

3. A paper fastener, in strip form, having a closed end barrel adapted to be driven .through the material to be fastened, and bottom flanges, severed from the strip in the act of setting. r

4. Paper fasteners of substantially inverted U-shape arranged in strip form to facilitate their use in a fastener setting machine, the strip being partially severed transversely to individualize the fasteners and provide for their separation from the strip one by one i 1 In testimony whereof I have hereunto set my hand this eighth day of November, A. D. 1920.

CEDRIC PUTNAM Witnesses ANNA PEARL SWEET, GRACE MASTERS.

sIBLEYf

Images