US1480531A - Separable fastener - Google Patents

Description

F. S. CARR SEPARABLE FASTENER Filed Decf Ej Patented Jan. 8, 1924.-

UNITED STATES PATENT i ori-ical FRED B. CARR, OF NEWTON, MASSAQHUSETTS, ASSIGNOR T' CARR FASTENER CO1!- i PANY, OF CAMBRIDGE, MASSACHUSETTS, vA CORPORATION OF MAINE.

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in separable fasteners. It is among the objects of the invention to provide an improved and simplified securing means for attaching the socket of the fastener to its carrying fabric and to provideV a fastener, preferably of the three-,side lock type, in' which a relatively short stud may be used if desired.

In the drawings, which show a preferred form of one embodiment of my invention v,

Figure 1 is a front elevation of a fastener;

F ig. 2 is a section on the line .2-2 of Fig. 1

Fig. 3 is a section on the linel 3-3 of igs. 4 and 5A illustrate details of the preferred form of attaching plate; and

Fig. 6 is a rearelevation of the socket casing.

Referring to the drawings and to the preferred form of my invention lselected for illustrative purposes, I have shown a stud havinga head 6 and a neck 7 presenting between them a relatively abrupt shoulderS` and having a shank portion 9. The pre ferred form of socket illustrated includes a socket member secured to that side of a curtain or other flexible carrying medium 10 on which the stud is located and including 4U forwardly projecting prongs 11 adapted'to penetrate the fabric 10 and to engageand be clenched within the attaching. plate which, as illustrated, is preferably formed from two pieces of metal, a cover plate 12 and a clench @s plate 13. The clench plate 13 may, if desired, be depressed or apertured centrally' and preferably provides holes 14 to receive' the forwardly projecting prongs 11. The metal from the holes 14, as best viewed in 5 Fig. 4, is preferably only cut away on three sides, the outer edges not 'being cut and the metal being thrown toward the interior of the securing plate so as to rest against the cover plate 12 and to provide reinforcing and clenching parts 14', which render un- 7 of the stud. `The stud-receiving aperture necessary the pro-vision ofthe usal separate reinforcing and clenching plate ordinarily used with this type of securing means.

n Referring now to the socket proper, thisA may be conveniently formed, as illustrated,` from two pieces of metal, one constituting the casing proper 15 dished to receive a spring 16 and providing side walls 17 from which the clench prongs 11 project. A front plate 18 may be securedv tothe casing propery 15 by any suit-able means, typified by the relatively shortprongs 19. The socket con-A tains a spring, which maybe of wire bventv to the form illustrated in Fig. 3 having'one end thereof adapted to intersect the top of lthe stud-receiving opening 20 and to press the stud when entered therein against a fixed jaw 21` which may be formed on the front plate 18 of the socket proper. This jaw 21 preferably slopes upwardly and rear- 75 wardly so as to provide an inclined surface against which the -shoulder 8 of the stud `rests when stud and socket are in engagement, with the Iiaw portion 25 of the spring 16k engaged in the opposite side of the neck 90' 20 is preferably elongated to permlt relative tipping movement of stud and socket in onedirection only, this being the direction produced by an outward pull on, thatl side of the socket toward which the fixed jaw 211 isflocated, the socket fulcrumingv about the spring `jaw` 25 as the yshoulder'8 rides up the incline of the fixed jaw21 until the stud and socket are free to separate.v

While the stud vand socket may bel freely separated by an outward pull on'the bottom of the socket, as viewed in Fig. 2, a corre- -sponding tipping movement -which would normally arise from an inward push on the 0 upper sideof the socket as viewed in Fig. 2

will not separate the studand socket because such anfinwar'd push, when arising from any normal strain on the flexible carrying medium 10, such for instance as wind strain on the curtain of an automobile, will roduce an upward pull on, the socketl which will urge the lfixed jaw 21 firmly into engagement with the neck 7 of the stud behind the shoulder 8 so that the stud and socket will 105 not separate pursuant to such mani ulation. Further, where as in the fastener il ustrated the shank k9 of the stud is exceedingly short, the upper portion of the casing 15 will bear against the base `of the stud beo Y fore any considerable tipping movement can j a socket having forwardly pro take place arising from an lnward push on the top of the socket. On the other hand, an outward pull on the bottom of the socket in the desired stud and socket separatingy direction may produce a `tipping movement 'because the resolution of forces causingthe inclined face of the jaw 21 to ride down the shoulder 8 permits the 'outward movement of the bottom of the socket to a suiiicient extent so that the desired tipping may be e'ected. A,

While I lhave shown and described al pre erred form of one embodiment of my iny vention, it will be understood that changes involving omission, substitution, lalteration and reversal of parts, and evenchangesin the mode of operatiommay be made without departino from the scope of my invention, which is lbest' defined in the ollowing claims.

Claims:

l.' A fastener comprising, in combination, 'ecting prongs and a socket-securing part inc uding a cover plate,l a clench plate within the cover plate, said clench plate having penetrations to permit passage ofy said prongs therethrough, and

portions `of `said clench plate bent toward.

said ,cover plate adjacent said penetrations to providel prong-deileeting` surtaces interiorly Iof saidcover plate. f 2. Affastener comprising, .in combination, a socket having forwardly projecting prongs and a socket-securing part includinga cover plate, a clench plate within the cover-plate,

said clench plate having penetrations to permit passage of said rongs therethrough, and

said -cover plate adjacent said penetrations to provide prong-deflecting surfaces i'nteriorly. of said cover plate, said portions of said clench plate bent toward said cover plate and resting lthereagainst whereby said cover plate may reinorce said portions.

risingia socket proper having prongs projecting forwardlyv therefrom. and socket-sevfrom said penetrations in said clench plate remaining attached to said clench plate 'at one side and bent toward the inside face of said cover plate to provide means interceptfixed `jaw 21, 7. "A socket 3. A socket for-separable fasteners com-VV ing said prongs pursuant to their passage through said enetrations in -said clench plate.

4'. VA separable fastener comprising, in combination, a-stud havinga head ,and a. neck* with a lrelativelyabrupt shoulder between them, and a socket secured to a tienible carrying medium at that side thereof adjacent said Astnd and presenting resilient jaw means above the stud. and an inclined Atired jaw below the stud, said inclined fixed jaw presenting a sloping surface permitting j disengagement of said fixed jaw from behind said shoulder when said socket is tipped relative to said stud in' that direction resultt ing from an outward pull on that side of the socket Where said fixed jaw is located.

5. Av separable fastener comprising, in combination, -a stud having a head and a, neck with a relatively abruptyshoulder between them, and a socket secured to a fleaible carrying medium at that side thereoi' adjacent said stud and. presenting resilient jaw lmeans above the stud and an inclined j fixed janT below the stud, said inclined fined jaw presenting a sloping surface permitting .disengagement of said-.fixed jaw from behind said shoulder .when said socket istipped relative to said stud in that direction resulting from an outward pull on that side of the socket where said 'ixed ljaw is located, said stud and. socket or fanizedand operating lto prevent separation y relative tipping move-y ment in all. other directions.

6. A t separable fastener comprising, .in combinatioma stud having a head, a `neck and a shoulder between them, and socket portions of said c ench plate bent toward` means including-a casing 15 presenting a` stud-receiving aperture 20 and cooperating with a front plate 18 presenting a fixed jaw 21, and spring means in said casing presenting a springer-pressed .jaw 25 opposite said for separable fasteners cornprisln'g, in combination, a casing having orf wardlyv projecting prongs 1l and attaching g FRED s. cana Miti lmeans including a cover plate 12 and a clench

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