US337969A

US337969A - Metallic fastener

Info

Publication number: US337969A
Authority: US
Publication date: 1886-03-16
Anticipated expiration: 1903-03-16

Description

2 Sheets-Sheet 1.

(No Model.)

G. W. MGGILL.

METALLIC FASTBNER.

No. 337,969. Patented Mam. 16, 1886.

ITIVESSES N. PETERS, Hwwbmogmpher, washington D. c.

(No Model.) 2 Sheets-Sheet 2.

G. W. MoGILL.

METALLIC IASTBllEIR.A

No. 337,969. Patented Mar. 16, 1886.

Ely. 7.

N4 PETERS, Phcwutmgmplwr, wmhmmun, D. C.

` UNITED STATES PATENT EEICE.

GEORGE XV. MCGILL, OF RIVERDALE, NEV YORK.

METALLIC FASTENER.

SPECIFICATION forming part of Letters Patent No.337,969, dated March 16, 1886.

Application filed January 15, 1886. Serial No. 198,630.

To all whom it may concern:

Beit known that'I, GEORGE EV. MCGILL, a citizen of the United States, residing at Riverdale, in the city and county of New York, State of New York, have invented a new and Improved Metallic Fastener, of which the following is a specification, reference being had to the accompanying drawings, making part of the same, and to the figures and letters of reference marked thereon, in which similar letters and figures of reference indicate corresponding parts.

My invention consists in a fastener made of a single piece of sheet metal,of greater length than width, shaped or fashioned to have a plate or disk at each end struck concavo-con vex and connected together by a neck, one or both plates having a penetrating-prong extending from it.

In the accompanying drawings the device is represented embodied in three different forms, to wit: in the form of a pairof scallop- Shells connected together by a neck integral therewith,as shown in Figures l to S,inclusive; a scallop-shell and coneavoconvex plate, similarly connected, as shown in Figs. 9 and 10, and as two concave convex plates similarly connected, as shown in Figs. ll, 12, and 13. Fig. l shows the blank from which the device is fashioned, struck up in scallop-shell form, l 2A being the shells or plates, 3 their connecting-neck, and 4 the penetrating-prong ofthe device. Fig. 2 represents the blank so fashioned folded overon a line running across the center of the neck 3, with the concave surface of both plates or shells facing each other. Fig. 8 is a perspective view of Fig. 2, with the prong 4 bent out at an angle from the plate or shell with which it is connected, and both'plates or shells facing each other at an angle. Fig. 4 represents a plan View of the fastener as applied in binding together several sheets of paper. Figs. 5 and 6 represent vertical sectional views of Fig. 4, taken on aline x :v of that figure, Fig. 5 representing the position of the penetrating-prong 4 and covering plate or shell before being folded down on the opposite side of the papers, and Fig. 6 after being folded down. Fig.7 is a view similar to Fig 3, excepting that in Fig. 7 the prong 4 is shown folded in from the periphery of the plate or shell to form a shoulder, Z), extending into the hollow of the same, and is then brought out at aright angle (No model.)

from the concave surface of the shell or plate on a line within the periphery of the same. Fig. 8 is a View similar to Fig. 6, showing the prong 4 fashioned as shown in Fig. 7. Fig. 9 is a view similar to Fig. 7, excepting that the plate lis given a dish form instead of a shellform, and the prong 4, instead of being folded back into the hollow ofthe plate before being brought out at a right angle from the same, is cut to extend through the edge of the plate and is bent out at an angle directly from the concave surface of the plate and on a line within its border or periphery. Fig. l0 is a view similar to Fig. 9, excepting that in Fig. 10 the prong 4 is represented fashioned wholly from the body part of the plate l, being cut as a tongue therein and ter- Ininating within the struck edge of the plate, and projecting'out at right angles therefrom. Fig. l1 represents a modification in the struck-up blank of the device, wherein both plates are provided with a penetrating-prong. Fig. 12 is a vertical sectional view of the fastener fashioned from the modified blank shown in Fig. 1l, and 'applied in binding papers. Fig. 13 is a perspective view of the fastener so fashioned, and Fig. 14 is a cross-section of the prong 4, taken on the line y yof Fig. 11.

rEhe device proper is operated as follows: The penetrating prong 4 is forced through the papers to be bound until the periphery of plate l rests on one side of the same at a distance from the margin to admit of the other plate, 2, being folded over on the other Side of such papers, as shown in Fig. 5. rlhe penetrating-prong4 is then folded down on the Opposite side of the papers and toward the neck or hinge 8, and the plate 2 folded down over it, as shown in vertical sectional Fig. 6, thereby covering the prong and presenting similar convex surfaces on both sides of the papers, as shown in Fig. 4. Vhen the prong 4 is projected directly from the edge of the plate to which it is attached, as in Figs. from l to 6, inclusive, it is preferable to have the free plate 2 a little longer than the'prong plate l, as shown by dotted lines in Fig. 4, to admit of the plate 2 covering the whole of the folded part of the prong 4 and its point of penetration in the papers, to protect the latter and to admit of the edge of the plate 2 resting directly on the surface of one side of the papers, as does the edge of the other plate on the opposite side of the same. This end IOO may be accomplished by folding the neck 3 in manner to cause the front edge of the covering-plate 2 to project beyond the pronged edge of the lower plate. I prefer, however, to make both plates l and 2 of the same size, as shown in Fig. 7, and to accomplish the end above stated by folding the prong 4 back into the hollow or concavity of its plate before bending it out at a right angle from the same, as shown v1n Ysaid figure. By this arrangement of the prong it will penetrate and leave the papers being bound at a point within the circumference of both of the

plates

1 and 2, and admlt of it and its point of puncture being wholly covered by both plates, as shown in the vertical sectional Fig. 8. The fastener thus made, when applied, will present two conver surfaces rising from the papers or other articles which it binds-one on eaehside-with thelr outer edge or periphery resting directly on the p aper and vcovering the folded-over penetrating-prong and its'point of puncture in the papers. Asimilar end'may, in a measure, be accomplished by cutting the prong into its plate through the edge of the latter, as shown 1n Fig. 9, or forming it wholly from the body part of the plate as a tongue, as shown 1n Fig. 10, and projecting it at a right angle from its plate, as shown in both said last-named figures.

The modification in the construction of the fastener shown in Figs. 11, 12, and 13 consists 1n providing both plates of the device w1th penetrating-prongs. These prongs are cut integral with each plate and on parallel lines with each other, as shown in Fig. 11, and are folded back into their respective plates and out at right angles therefrom, as shown 1n Fig. 13. The papers or othei` articles to be fastened have va slit punctured in them on a line parallel to their margin and at a proper distance therefrom, and of a length equal to the width of both prongs. Both prongs are inserted in this slit-one on opposite sides of the papers-and on the plates 12 being pressed together the prongs are forced through the papers, and on their points coniing 1n contact with the concave faces of the plates they are deflected and forced down toward the papers, as shown in the vertical sectional Fig. 12.

. The penetrating-prong 4 of the fastener, to increase its penetrating-power, may be made semi-cylindrical throughout its length, asl

shown in Fig. 2, or struck with vertical ridges, as shown in Figs. 11, 13, and 14; and the neck 3 of the device may be similarly fashioned to increase its clamping-power, as shown at ain Figs. 1, 2, 11, and 13.

To cause the neck 3 to fold correctly on a line across its center, so as to bring the plates 1 2 to properly face each other, the neck may be weakened on that line by discontinuing one of the ridges c at the center point, as, shown in Fig. l1, or by providing the neck with a cross-slot or cross bead or ridge at that point.

Wh at I claim as my invention, and desire to secure by Letters Patent,'is'

1. A metallic-fastener blank having a central part, 3, and

plates

1 and 2, struck cor-l respondingly concavo-convex,with a prong or prongs, 4, projecting from the outer edge of one or both such plates, substantially as set forth.

2. A metallic fastener having two concave.- convex clamping-plates,"1 2, a penetrating prong or prongs, 4, projecting from one-or both of said plates, and a folded neck connecting such plates, as and for the purposes described.

3. In a metallic fastener having two connected clamping-plates, 1 2, the penetratingprong 4, one or more, folded back on its connecting-plate to form the shoulder b, then out from said plate on a line within the border of the same, substantially as described.

4. In a metallic fastener having two concavo-convex clamping-plates, l 2, connected 'together by an integral neck, 3, thepenetrating-prong 4, one or more, arranged to pro- V ject from within the borderv of its connecting,

plate and at an angle therefrom, substantially as and for the purposes described.

5. In a metallic fastener, a base-plate, 1, provided with a fastening-prong, 4, in co-mbination with a covering-plate, 2, struck concavo-convex, and connected with and overlapping the base-plate by means of a folded connecting-neck, 3, made integral with both plates, the covering-plate adapted to receive in its concavity and cover the turned-down point of the applied prong, as described.

6( In a metallic fastener having a base IIO pronged plate and a concavo-convex cover- I ing-plate connected together by an integral neck, the penetrating-prong 4, cut wholly or partly from the body of the base-plate and bent up at an angle therefrom on alinewithin theouter edge or periphery of such plate, substantially as shown in Figs. 9 and 10, for the purposes described.

7. A metallic fastener having two connected clamping-plates, 1 2, veach plate provided with a penetrating-prong,` 4, projecting from the outer edge of such plate on parallel lines with each other, as and for the purposes herein set forth.

In testimony whereof I afilx my signature in