US1690664A - Separable fastener - Google Patents

Description

Nov. 6, 1928. 1,690,664

F. s. CARR SEPARABLE FASTENER Filed Jan. 16, 1926 I nvenio Red 8. Cars",

Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

FRED S, CARR, F NEWTON, MASSACHUSETTS, ASSIGNOR T0 CARR FASTENEB COM- PANY, 0F CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

SEPARABIIE FASTENER.

Application filed January 16, 1926. Serial No. 81,862.

This invention aims to provide improvements in separable fasteners.

The claims of this ap lication are generic to my copending app ication Serial No. 11,691, filed February 26th, 1925, in which I intend to claim only a specific embodiment of my invention.

In the drawings, which illustrate preferred embodiments of my invention Figure 1 is a plan View of a portion of a carpet showing the underlying fastening means in dotted lines;

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

Fig. 3 includes bottom, side and top eleva- 1 tions of the preferred form of socket.

Fig. 4 is a plan section on the linedl of Fig, 2, showing the stud in elevation and showing a somewhat exaggerated view of the socket expanded as a whole during engagement with or disengagement from the stud;

and

Fig. 5 is a cross-section showing the socket secured to a flexible support by the use of an annular attaching plate which receives and clinches the attaching prongs.

The socket casing illustrated. by the drawings is preferably pressed from a single piece of metal in the form of an annulus of substantially U-shaped cross-section having an an inner wall or flange 1 surrounding a stud-receiving aperture 2, an outer continuous wall or flange 3 and a web portion 4 connecting the flanges at the bottom. The casing is slit in three places, as shown in Fig. 3, by T-shaped 3.5 cuts 5 extending across the inner wall and the web 3, branching outwardly in the web parallel with and between the flanges 1 and 3 to form the top of the T. The number of cuts 5 may be varied without affecting the result an of providing between the cuts resilient neckengaging fingers adapted to be spread laterally to permit entrance of the head of a stud through the aperture 2 but not flexible to any appreciable extent.

The cuts extend substantially to the outer flange 3 and provide in the flange 3 adj accnt the tops of the Ts flexible portions 6 between the outer ends of the fingers. These portions 6 may flex toward the center of the casing dureu ing engagement and disengagement of the stud and socket. It will be readily understood from the above description that the casing as a whole is contractible and expansible transverse to the axis therebf. As the head of the stud spreads the portions between the cuts 5, outwardly from the center of the socket, the portions 6 of the wall or outer flange 3 flex inwardly thereby permitting enlaigement of the stud-receiving aperture an passage of the head therethrough as shown in Fig. 1. I

The casing may be secured to a flexible support in any suitable manner, but for purposes of describing the invention it has been shown, in Figs. 1 and 2, as secured to a carpet 7 by a plurality of attaching prongs 8 These prongs arise from the upper periphery of the flange 3 preferably between the T slits 5 and adjacent to the ends of the top portion of the T. The prongs 8 pierce the carpet from the under side thereof passin through the warp and weft threads and are then bent downwardly and concealed by the pile, the upper edge of the flange 3 being seated directly against the web of the carpet (Fig. 2).

During expansion and contraction of the socket cas ng, the prongs are permitted to move with the flange 3 as the movement is so slight that it is not interfered with by the carpet because of the flexibility of the warp and weft threads.

For purposes of illustration, I have shown a. stud having a relatively flat head 9 so as not-to form a bunch in the carpet above the socket, a neck 10 for engagement with the inner wall or flange 1 and a base 11. The stud is secured to a wooden floor 12 by an attaching screw 13 assembled with the stud. This stud may be of any suitable shape and may be secured to any suitable support in any manner, depending upon what the fasten er is to be used for.

Another use of the socket is shown in Fig. 5, it being secured to a flexible'fabric, leather or like medium 14: by the use of an attaching plate 15 of any-suitable design. In this instance, I have shown the casing secured to the support 14' by forcing the attaching prongs 8 through the medium 14: so that they engage and are clenched by the attaching plate 15. The prongs first strike the anvil portion 16 of the'plate 15 and are curved outwardly and downwardly against the inwardly bent annular flange portion 17, thereby gripping the medium 1 1 between the plate 15 and the upper periphery of the flange 3 as the flange 17 and the prongs 8 so as to permit the prongs to flex with the casing when engagin and disengaging a stud.

ile I have shown and described two preferred embodiments of m invention, itwill be understood that I have one so for purposes of clarification rather than limitation, the invention being best defined in the following claims.

Claims:

1. A fastener socket having a laterally yieldable wall adapted to rest directly on and e secured to a socket-carrying support at the same side from which the stud enters and continuing as an inbent extension, said inbent extension being severed by a plurality of cuts extending substantially to said wall whereby to provide stud-engaging jaws which move laterally with said wall.

2. A fastener socket comprising an annulus of channel section severed across the inner flange and web by a plurality of cuts extending substantially to the outer flange and a plurality of attaching prongs rising directly from said outer-flange for securing said socket to that side of a support from which the stud enters.

3. A fastener socket comprising a plurality of generally curved stud-engaging portions surrounding a stud-receiving aperture, and a continuous resilient wall connecting said stud-engaging portions at their outer ends, said wall being expansible and contractible laterally to permit engagement and disengagement of said socket with a stud.

4. A fastener socket comprising a casing providing a stud-receiving aperture having a surrounding upwardly pro ecting stud-engaging wall for resilient engagement with a stud, a continuous peripheral wall surrounding said stud-engaging wall and a plurality of prongs extending upwardly from said peripheral wall to secure said socket to a suitable support.

5. A carpet fastener socket comprising a one-piece casing substantially U-shaped in cross-section and providing a stud-receiving aperture surrounded by an expansible and contractible stud-engaging Wall and a plurality of attaching prongs extending upwardly from an upstanding continuous wall at the outer periphery of said casing, said prongs hooked over the warp and weft threads of a carpet and concealed by the pile thereof.

6. A fastener socket pressed from a single piece of metal and having an upstanding laterally yieldable peripheral wall portion presenting a plurality of stud-engaging portions surrounding a stud-receiving aperture, said stud-engaging portions being substantially rigid but being adapted to shift laterally with said peripheral wall to permit entrance of the head of a stud therebetween, the portions of said upstanding wall between said studing peripheral wall portion presenting a (plurality of stud-engaging portions surroun ing a stud-receiving aperture, said stud-engaging portions adapted to shift laterally to permit entrance of the head of a stud therebetween, the portions of said upstanding wall between said stud-engaging portions adapted to flex inwardly during entrance of the head of the stud in said socket, thereby to permit lateral shifting of said-stud-engaging portions, and a plurality of attaching prongs extending upwardly from said wall for securing said socket to a carpet.

8. A one-piece carpet fastener socket having an upstanding peripheral wall presenting at its lower periphery a plurality of inwardly extending stud-engaging fingers adapted to be expanded in a substantially lateral plane by engagement with a stud and a plurality of attaching prongs extending upwardly from the upper periphery of said wall for securing said socket to a support.

9. A fastener socket including a plurality of stud-engaging fingers presenting at their inner ends generally curved neck-engaging jaw portions surrounding a stud-receiving aperture and secured together by an upstanding peripheral Wall having portions thereof between said jaw portions adapted to flex inwardly to permit said jaw portions to spread thereby to enlarge the stud-receiving aperture for the head of a stud to pass therethrough.

10. A fastener socket having a plurality of shift-able stud-engaging portions secured together at their outer ends by a continuous upstanding wall, said wall presenting resilient portions of substantial length between the outer ends of the stud-engaging portions which permit said stud-engaging portions to shift when the head of a stud'is passed therebetween.

11. A fastener socket comprising an annulus of channel-shaped cross-section severed across the inner flange by a plurality of cuts to provide a plurality of resilient stud-engag ing portions, the cuts extending into the web and substantially to the outer flange to provide for flexing of said outer flange during engagement and disengagement of said socket with a stud and means for securing said socket to a support.

12. A fastener socket comprising an annulus of channel-shaped cross-section severed across the inner flange by a plurality of cuts to provide a plurality of resilient stud-engaging portions the cuts extending into the web and exten ing generally parallel with the inner and outer flanges to provide T-shaped slots for permitting lateral expansion and contraction of the socket as a whole when engaging and disengaging a stud.

13. A fastener socket comprising an annulus of channel-shaped cross-section severed across the inner flange by a plurality of cuts to provide a plurality of resilient stud-engaging portions, the cuts extending into the web and extending generally parallel with the inner and outer flanges to provide T-shaped slots for permitting lateral expansion and contraction of the socket as a whole when engaging and disengaging a stud and a plurality of attaching prongs extending upwardly from the outer flange and located between the slots.

14. A one-piece fastener socket comprising a one-piece casing having a continuous outer peripheral wall presenting at the bottom edge thereof a plurality of inwardly and upwardly extending stud-engaging portions surrounding a stud-receiving aperture for engagement with a cooperating stud by generally lateral expansion and contraction of said outer peripheral wall and a plurality of prongs at the upper edge of said wall for securing said socket to a flexible carrying medium, said prongs being shiftable with said outer pcripheral wall.

15. A fastener socket comprising a continuous casing U-shaped in cross-section and providing an outer upstanding wall and an inner wall joined together at their bottom edges by a web, said inner wall and web divided by cuts extending to said outer wall to provide said outer wall with flexible portions of substantial width at the ends of said cuts to permit expansion and contraction of said casing in a plane transverse to the axis of the casing.

16. A fastener socket comprising aringlike casing U-shaped in cross-section and providing inner and outer circular upstanding walls joined together at their bottom edges by a web, said inner wall and web divided.

by T-shaped cuts extending to said outer wall to provide said outer wall with flexible portions of substantial width at the ends of said cuts to permit expansion and contraction of said casing in a plane transverse to the axis of the casmg, and attaching prongs extending upwardly from said casing and adapted to shift therewith.

' 17. A fastener socket comprising a casing having an upstanding laterally yieldable wall, a plurality of fingers extending inwardly from said wall and terminating about a stud-receiving aperture, said fingers being adapted to yield laterally with said wall, and the inner ends of said jaws being substantially closer together circumferentially than their outer ends where they join the wall, thereby to provide greater resiliency to said wall.

18. A fastener socket comprising a casing having an upstanding laterally yieldable wall, a plurality of fingers extending inwardly from said wall and terminating about a stud-receiving aperture, said fingers being adapted to yield laterally with said wall, and the inner ends of said jaws being substantially closer together circumferentially than their outer ends where they join the wall, thereby to provide greater resiliency to said wall, and a plurality of attaching prongs extending upwardly from said casing.

19. A one piece carpet fastener socket. comprising an annulus of substantially U-shaped cross-section, the outer wall of the annulus being continuous and the inner portion of the annulus surrounding a stud-receiving a erture and being divided by a plurality 0 rardial cuts separating the inner portion and bottom portion of the annulus into a number of stud-engaging portions adapted to move laterally to permit enlargement of the stud-receiving aperture. I

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

FRED S. CARR.

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