US1699485A - Separable fastener - Google Patents

Description

Jan. 15, 1929.

1,699,485 F. s. cARR SEPARABLE FASTENER Filed Dec. 20. 1924 java-2 2302.- .Fred S. Cir/W2,

Patented Jan. 15, 1929.

unirsn STATES 1,699,485 PATENT. OFFICE.

FRED S. CARE, OF NEWTON, MASSACHUSETTS, ASSIGITOR TO CARR FASTENEB COM- PANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

SEPARABLE FASTENEB.

Application filed December 20, 1924. Serial No. 757,157.

This invention aims to provide an improved separable fastener.

In the drawings, which illustrate a preferred embodiment of my inventions- Figure 1 is a front elevation of aportion of a placket showing the stud and socket in dotted lines;

Fig. 2 is a section on the line 22 of Fig. 1, being partly in elevation;

Fig. 3 is an elevation view of the socket in position upon a flexible carrying medium;

and

F f is an elevation view of the stud in position upon its carrying medium.

Referring to the drawings, I have shown a separable fastener for use in securing the edges of a placket or the like together, the socket being so constructed and secured to the fabric that it cannot be separated from the stud when lateral strain is exerted thereupon.

The stud, as illustrated, comprises a head 1, a neck 2, and a base portion 53, secured to the stud-carrying fabric 4 by stitches which pass through the fabric andthrough sewing holes 5 in the base portion 3 of the stud, thereby securing the stud firmly in position adjacent one edge of the placket.

The socket is preferably relatively thin and may be formed from any suitable material, but I prefer, as illustrated, to construct it from a single piece of wire so as to present a stud-receiving aperture 6 surrounded on three sides by three'relatively large loops 7, 8 and 9 and on the fourth side by two rela tively small loops or eyes 10 and 11 which are formed from the free ends of the wire and are located relatively close together. The socket is secured to its carrying fabric 12 by securing stitches sewn over the outer ends of the loops 7 8 and 9 and between the e es 10 and 11, as best illustrated in 3.

he result of securing the eyes 10 and 11 firmly together is to provide a socket which will expand and contract rather evenly upon all sides of the stud-receiving aperture 6, thereby preventing distortion of the socket.

Heretofore the large loops of a socket of similar construction, have usually been formed having symmetrical curves throughout their entire length and, while a socket of such a construction has given some satisfaction, it has been noted that the curved ends of some of the loops have crowded through the loops so that in efiect the stitches operated to cam the loops through them sufficiently to spread the neck-engaging portions of the socket or to weaken or destroy the stitches. This generally took place when strain was exerted in such a direction as to move the socket toward the edge of the placketor the like. The result therefore was to spread the neck-engaging portions of the socket and permit separation of the stud and socket by lateral strain or else to breakthe stitches.

To overcome the difiiculties set forth, I have 7 provided a socket in which at least two of the loops are provided with straight portions adjacent their outer ends so that, when lateral strain is exerted upon the socket, the movement between the loops and the stitches will not operate to expand the neck-engaging ric, pass over the straight portions 13 of the loops. Thus when the stud and socket are engaged and a lateral strain is exerted upon the stud and socket, in such directions as will tend to urge the socket toward the edge of the fabric 12, the straight portions of the loops 7 and 9 merely move or slide relative to the stitches without placing undue strain upon them or without effecting any cam action between the loops and the securing threads. Thus the neck-engaging portions 14 of the socket are not aifected by lateral strain exerted upon the socket and they only expand when the stud is being engaged with or disengaged from the socket.

While I have illustrated and described a preferred embodiment of my invention, it

said loops relative to the carrying medium to which said socket is secured without eiiecting spreading of said neck-engaging portions or placing undue strain upon the stitches. v

2. A relatively thin fastener socket presenting a stud-receiving aperture, a plurality of resilient neck-engaging portions surrounding said aperture and a plurality of stitch-receiving loops stitched to a flexible support, two of said loops presenting straight portions at their outer ends to permit movement of said loops relative to their cooperating securing stitches, when strain is exerted upon said socket in a direction toward the edge of the support, thereby to prevent undue strain on the stitches.

3. A relatively thin one-piece socket presenting a stud-receiving aperture, a plurality of loops stitched to a flexible support and presenting, neck-engaging portions for en gagement with the neck of a stud, two opposed loops presenting, at their outer ends, relatively straight portions parallel with the normal line of strain exertedupon the socket when secured to a stud, thereby said straight portions permitting movement of the loops relative to the stitches without placing undue strain on the stitches and without effecting expansion of the neck-engaging portions.

4. A fastener socket formed from a single piece of Wire and presenting a stud-receiving aperture, a plurality of spaced apart resilient stud-engaging jaws surrounding said aperture, means for providing even distribution of the expansion of said jaws and a plurality of relatively large stitch-receiving loops spaced about said jaws, two of said loops trans verse relative to the normal line of strain exerted upon the socket, said loops having straight portions at their outer ends parallel to said line of strain to rovide means whereby the loops may be s ifted relative to the stitches without efiecting expansion of said aws.

In testimony whereof, I have signed my name to this specification.

FRED s. CARR.

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