US2080979A

US2080979A - Snap fastener stud

Info

Publication number: US2080979A
Application number: US675585A
Authority: US
Inventors: Joseph F Cox
Original assignee: United Carr Fastener Corp
Current assignee: United Carr Fastener Corp
Priority date: 1933-06-13
Filing date: 1933-06-13
Publication date: 1937-05-18
Anticipated expiration: 1954-05-18

Description

May 18, 1937. F', Cox 2,080,979

' SNAP FASTENER s'run Filed June 13, 1933 Inventor: cfase vh I? 00.2 I mm Patented May 1e, 1937 PATENT OFFICE- 7 SNAP FASTENER- s'rUn Joseph F. Cox, Arlington, Masa, assignor to United-Carr Fastener Corporation,

Cam-

bridge, Mass., a corporation or Massachusetts Application June 13, 1933, Serial No. 675,585

3 Claims.

My invention aims to provide improvements in snap fastener studs, the method of making the same and installations thereof.

In the drawing which illustrates preferred embodiments of my invention:--

Figure 1 is a plan view of a strip of ribbonlike sheet metal stock showing the first formation'step in the method of making my improved snap fastener stud;

Fig. 2 shows the blank bent in the middle and the ends of the socket-engaging portion overlapped during the second step of the method of making'my improved stud;

Fig. 3 is a plan view of the complete stud showing the first step of bending the socket-engaging projections at a right angle to the base;

Fig. 4 is a side elevation of the complete stud member;

Fig.5 is a part section and part side elevation of an installation of my-improved stud member;

Fig. 6 is a front elevation of the installation shown in Fig. 5 plus the supporting structure in cross-section;

Fig. 7 is a plan view of the installation shown in Fig. 5;

Fig. 8 is a plan view of a modified form of installation;

Fig. 9 is a plan view of another modified form of installation; and

Fig. 10 is a section taken on the line Ill-I0 of Fig. 9.

In the drawing which illustrates preferred embodiments of my invention, I have shown a snap fastener stud member which is particularly, though not exclusively, adapted for use as an upholstery and like fastener. The fastener per se is preferably L -shaped and has a loop-shaped base I and an upright socket-engaging portion comprising a pair of movable projections 2'2, each projection being formed as an integral extension at the open end of the loop-shaped base I. The socket engaging projections are arranged so that they may overlap each other in a scissorslike action when moved toward each other edge- Wise,as clearly shown in'Figs. 3 and 4. Each of the projections 2-2 has its outer edge 3 shaped and arranged so that both edges cooperate to provide a diverging neck portion and a converging head portion, as best illustrated in Fig. 6. The inside edges of the arms of the loop-shaped portion I- are raised slightly at the point at which the integral projections 2'2 extend from the arm (Fig. 6) by twisting the arms slightly so that'- the inside edges will be higher in relation to the normal-plane of the arms than the outside edges at points toward the ends of the arms. This raising of-the inside edges of the arms is provided so that when the projections 2--2 are moved toward each other the arms of the loop-shaped base may move back toward the normal plane of the base without interference from the part to which the base is to be attached.

My improved fastener is' preferably formed from a thin, ribbon-like sheet metal stock which is of substantially greater width than its thickness. It is formed by an improved method as follows: First, the diverging and converging socket-engaging projections are formed at the ends of the blank which is cut from the strip which is best illustrated in Fig. 1. Thereafter, the blank is bent at its mid portion into a loopso that the loop-shaped base I may be formed and the ends of the socket-engaging projections 2-2 overlapped,'as best illustrated in Fig. 2. Finally, the stud member is completed by bending the looped blank shown in Fig. 2 in such a manner that the socket-engagingprojections 2-2 extend at right angles from the arms of the looped base, During this last operation, or at any previoustime, the arms of the looped base I. may be twisted in the manner and for the purposes heretofore defined.

While I am aware that my improved fastener may be used with'various types of installations, I have found that it is particularly usefulin connection with simple upholstery installations,

as illustrated in Figs. 5 through 10. The installation illustrated'in Figs. 5, 6 and '7 includes -,a supporting structure of cardboard 4 or the like to which is attached a metallic part or staple 5 by means of attaching prongs 6 (Fig: 5) and so shaped that at least a portion thereof is spaced from the,face of the cardboard 4. v The part 5 is also provided with a boss 1 (Figs. 5 and 7) extending toward the cardboard so that when the loop-shaped base I is pushed into the space between the cardboard 4 and thepart 5the boss will enter into the space provided by the loopshaped base. In this manner the stud is held in assembled relation to the cardboard 4 and part 5 while being shiftable laterally in anydirection withinthe limits of the space provided by the aperture 8 of the loop-shaped base.

The installation illustrated by Fig. 8 includes the same number of parts operating in the same suitable attaching elements. In the particular structure of the strip I I have provided a cut-out recess H extending inwardly from one edge to receive the socket-engaging projections 2-2. In this instance the cardboard is debossed at opposite sides of the recess I I to provide bosses |2l2 so that the base I may engage a boss regardless of the side of the recess II at which the base I is entered between the supporting structure and the part ll.

The installation shown in Figs. 9 and 10 is very similar to that illustrated and described in connection with Fig. 8. In this instance, however, only one boss I3 is provided and a Wider and somewhat shallower notch I4 is formed in the edge of the part 9 so that the fastener may be attached by a straight movement of the loopshaped base I beneath the part 9 and in alignment with the notch 14.

In each of the installations illustrated and described the parts which are substantially alike have been given the same numerals and in Fig. 10 there is shown the general construction of each of the bosses shown in Figs. 8 and 9.

While-I have illustrated and described preferred embodiments of my invention, I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

I claim:

1. A snap fastener stud of the class described formed from a single piece of flat ribbon-like sheet metal bent edgewise upon itself, said stud having a substantially U-shaped base comprising a pair of arms and a portion connecting said arms at one end, said arms converging toward their free ends, and a socket-engaging projection extending directly from each of the free ends of said arms away from the plane of said base at that edge of the base opposite the connecting portion.

2. A snap fastener stud of the class described formed from a single piece of fiat ribbon-like sheet metal bent edgewise upon itself, said stud having a substantially U-shaped elongated base comprising a pair of arms and a portion connecting said arms at one end, said arms converging in straight lines from the connecting portion to at one end, said arms converging toward their free ends, and a socket-engaging projection extending directly from each of the free ends of said arms away from the plane of said base at that edge of the base opposite the connecting portion and raised portions of said arms at their inner edges at least adjacent to where they join the socket-engaging projections for the purposes described.

JOSEPH F. COX.