US1353111A

US1353111A - Separable fastener

Info

Publication number: US1353111A
Application number: US351784A
Authority: US
Inventors: Fred S Carr
Original assignee: CARR FASTENER CO Ltd
Current assignee: CARR FASTENER Co; CARR FASTENER CO Ltd
Priority date: 1920-01-16
Filing date: 1920-01-16
Publication date: 1920-09-14
Anticipated expiration: 1937-09-14

Description

F.' S. CARR.

SEPARABLE FASTNR. APPLICATION man IAN.16, 192m Patente Sept.' 14,1920.

P. l l l I l l l I l l I l I I I L.

UNITED STATES PATENT OFFICE.

FEEDS. GARR, or' NEWTON, MASSACHUSETTS, AssreNoR TO CARR FASTENER COMPANY, or CAMBRIDGE, MASsACHUSETTs-A CORPORATION or MAINE.

snrARABLE4 FASTENER.

To all whom it may Concern.'

Be it known that I, FRED S. CARR, a citizen of the United States, and resident of Newton, in the county of Middlesex and Commonwealth Of Massachusetts, have invented an Improvement in Separable Fasteners, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention pertains to improvements in separable fasteners.

It is among the objects of the invention to provide a separable fastener of simple and rugged construction, providing against separation by forces resulting from lateral strain.

Referring to the drawings, which show a preferred embodiment of one form of my invention: l

Figure 1 is an elevation of two pieces of fabric secured together by a preferred form Of fastener;

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

Fig. 3 shows two pieces of fabric secured together by a plurality of such fasteners;

Fig. 4: is a front elevation of a preferred form of socket shown in Fig. 2; and

Fig. 5 is a View of the spring used in the preferred form of socket herein illustrated.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes, l have shown the stud 6 secured to stud-carrying fabric 7 in any suitable way, but preferably by sewing, and coperating with a socket including a casing 8, secured to socket-carrying fabric 9 in any suitable way, but preferably by sewing. The casing 8 contains a spring 10, preferably flat and stamped from sheet metal, and having a stud-receiving aperture 11 therein, such stud-receiving aperture preferably being provided with a plurality of notches, such notches being preferably of a diameter somewhat smaller at their openings than the diameter of the neck of the stud so that the stud cannot enter in a notch sufficient to become locked therein against a separating stra-in produced by tipping or axial move ment of the stud relative to the socket in a direction somewhat greater than that which is likely to result from lateral strains on the stud and socket carrying fabrics.

rllhe socket casing is preferably apertured specification of Letters Patent. Patented Sept. 14, 1920.

Application led January 16, 1920.A Serial No. 351,784. i

to provide sewing holes, and the spring may be notched to facilitate passage of the threads.

The spring 10 is` provided with a slot or other Opening 12, and one of the notches 13 is preferably opposite the opening 12, and the external diameter of the spring is preferably proportioned to the internal diameter of the spring-containing casing so that when strain is exerted between stud and socket in such a directon as to bring the neck of the stud directly vtoward the aperture 13 adjacent the slot 12, the spring cannot open sufliciently to permit complete locking of the stud in the socket in such a way as to preclude separation thereof by strain in a separating direction, as distinguished from lateral strain or a force resultant from lateral strain.

The notches 13 are preferably, as shown, arranged about the interior of the spring in such a way that strain in almost any lateral direction will produce locking of the stud and' socket either by direct partial entrance of the neck of the stud into a notch, or by such entrance pursuant to a slight camming action of the stud on an inclined surface of the stud-receiving aperture.

The aperture in the spring is preferably such that when the stud is entered therein, there will be a slight pressure of the spring on the sides of the neck of the stud. The notches are preferably of such a diameter as to enable the stud to enter therein a distance less than one-half of the diameter of the neck, thus providing engagement between the stud and the sides of the adjacent notch without bottoming of the stud in the notch.

It will be understood that I use the word fabric in its broader sense to include not only woven materials, but any flexible carrying medium.

While I have shown and described a preferred form of one embodiment of my invention, it will be understood that a number of changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of Operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims: v

1. A separable` fastener comprising, in combination, a stud having ahead and a neck; a socket for engagement with said stud including a spring having a stud-re` ceiving aperture therein, split at one side and providing as a part of the stud-receiving aperture a plurality of notches, said notches of less width than the major diameter of the neck of said stud.

2. A separable fastener comprising, in combination, a stud having a head and a neck; a socket for engagement with said stud including a spring having a stud-receiving aperture therein, split at one side and providing as a part .of the studfneceiving aperture a plurality of notches, said notches of less Width than the major diameter of the neck of said stud, and said spring adapted to closely engage the neck of said stud when engaged therewith.

3. A separable fastener comprising, in combination, a stud having a head and a neck; and a socket for engagement with said stud including a casing providing a flangedover marginal portion, a Hat spring in said easing having a stud-receiving opening therethrough, said spring and casing -proporvtioned to prevent engagement of the neck neck; a socket for engagement With said Y stud including a spring having a stud-receiving aperture therein, `split at one side and providing as a part of the stud-receiving aperture a plurality of notches, the neck of said Vstud enterable in any one of .said notches a `distance less than yone-hakt the diameter of said neck. Y

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

FRED S. CARR. i