US1690665A - Separable fastener - Google Patents

Description

Nov. 6, 1928.

F. S. CARRY SEPARABLE FASTENER @riginal Filed April 15. 1926 Inv/vena? lq'fed 4S". (Graw1 21 Patented Nov. 6, 1928.-

UNITED STATES PATENT OFFICE.

FRED S. CARR, OF NEWTON, MASSACHSETTS, ASSIGNOR T CARR FASTENER COH- PANY, OF CAMBRIDGE, MASSACHUSIEFFJPS, A CORPORATION OF MAINE.

SEPABABLE FASTENER.

Application filed April 15, 1929, Serial This invention aims -to provide improvements in separable fasteners.

In the drawings, which illustrate a preferred embodiment of my invention Figure 1 is a plan view of a corner of a carpet showing a plurality of dotted circles to represent the position of the underlying fastener;

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

l@ 1, the stud being shown in elevation;

Fig. 3 includes an under side and a plan view respectively of the socket before attachment to a support; and

Fig. 4 is an enlarged sectional view taken M on the line H of Fig. 3.

Referring to the drawings, I have illustrated a fastener particularly, though not exclusively, useful for securing carpets and the like to floors of motor vehicles and the like y 'Ihe socket illustrated is pressed from a single piece of metal to form an annulus having an outer flange or wall 1 extending as an inbent extension for an inner flange or wall 2 curved to provide a smooth rounded surface surrounding a stud-receiving aperture 3. The outer and inner walls 1 and 2 are connected at the bottom of the annulus by the web 4, as shown in Fig. 4. The annulus is severed by a plurality of slits 5 .extending entirely through the wall 2 and web 4 and terminating in the outer wall 1 toprovide resiliency to the inner wall 2 so that it may expand and contract slightly when being engaged with or disengaged from the stud 6.

The annulus is preferably secured to the carpet 7 by a plurality of prongs 8 arising from the outer wall 1. These prongs 8 pierce the carpet from the under side and pass through the warp and weft threads whence they are bent outwardly and downwardly by a setting die (not shown).

l/Vhen the socket is secured to the carpet 7 the prongs 8 are concealed by the pile or nap of the carpet. When the carpet is pulled upwardly to separate the socket from the stud, the warp and weft threads pull tightly into the hooks provided by the outwardly bent prongs, as shown in Fig. 2.

Instead of disposing of the material between the prongs 6, I have formed therefrom a plurality of ears 9, which are preferably bent inwardly from the upper edge of the wall 1, over the annulus in a plane some- No. 102,348. Renewed Augustk14, 1928.

what above the plane of the upper edge of the resilient wall 2. Thus these ears 9 rest directly against the under side of the carpet and provide relatively wide smooth surfaces between the prongs to prevent cutting of the carpet. They also protect the stud-engaging portions durin expansion and contraction from any possibility of interferencek from the warp and weft threads of the carpet. These ears positively prevent the carpet from wedging between the walls 1 and 2 and interfering with the operation of the socket..

Itshould be noted that the prongs are located between the slits and are therefore back-supported during the setting operation by a substantially rigid portion of theannulus.

The ears 9 are located at the slits 5 and therefore strengthen the outer wall 1 adjacent the ends of the slits to prevent them from breaking through the wall during contraction and expansion of the inner wall 2.

The stud member 6 may be of any suitable construction, depending upon whether the floor 10 is of wood, metal or other material. However, the stud shown is of substantially the same construction as more fully described in my co-pending application, Serial No. 81,862, filed January 16, 1926.

While I have shown and described one embodiment of my invention, it should be understood that I have done so merely for purposes of illustration, my invention being more fully set forth in the following claims.

I claim:

1. A fastener socket having a peripheral wall, a pluralityof attaching prongs extending upwardly from said wall to secure said socket to a socket-carrying support, a studengagingportion extending inwardly and upwardly from the lower edge of said wall to provide a stud-engaging portion surrounding a stud-receiving aperture, said stud-engaging portion severed by a plurality'of slits to permit expansion and contraction thereof 100 and a plurality of ears extending inwardly from the upper edge of the peripheral wall to provide a surface above the plane of the stud-engaging portion for engagement with the support to prevent interference between 105 the support and the stud-engaging portion during expansion and contraction thereof.

2. A fastener socket having a peripheral wall, a plurality of attaching prongs extending upwardly from said wall to secure said 310 socket to a socket-carrying support, a studengaging portion extending inwardly and upwardl from the lower edge of said wall to provi e a stud-engaging portion surrounding a stud-receiving aperture, said'stud-engaging portion severed by a plurality of slits to permit expansion and contraction thereof, and means presented between the prongs for direct contact with one side of the socket support', said means being of substantial width and extending toward the expansible and contractible' stud-engaging portion of the socket.-

3. A one-piece fastener socket comprising a peripheral wall continuing as an inbent extension, said inbent extension being severed by slits extending into said peripheral wall, a pluralit .of ears integral with the 'upper edge of t e peripheral wall and extending transverse to the axis of the socket in a plane above the plane of the upper edge of the ininward] from said outer flange above thel web an inner flange, said' ears formed from the material cut out between said prongs.

5. A fastener socket coin risin an annulus seated directly a ain'st t e un er side `of av socketcarrying fa ric, and

resenting a stud-engaging portion surroun' ing a studreceiving aperture, a pluralit of attaching prongs arising from saidannu us and hooked `into engagement with the warp and weft threads of. the fabric, and a plurality of fabupper edge of the annulus.

f ric-en a ino' rtions bent inwardl from the g mp0 y outer e ge' of the annulus and extending vtransverse. to the' axis lof the socket at the y 6.' A one-piece fastener socket having an upstanding wall continuing as an inbent extension, said inbent extension surrounding a stud-receiving aperture to engage the neckof 1a stud and a "plurality of inwardly extending ears integral with the upper edge of the peripheral wall, said ears extending sub stantially transverse to the axis of the socket for engagement against that face of a carrying medium against which the socket is to be secured to keep the carryin medium from interfering with the action o the inbent extension and means integral with the socket for securing it to a support.

7 A fastener socket comprising an annulus of channel section adapted to seat directly against the under side of a socket-carrying fabric and presenting a stud-engaging portion surrounding a stud-receiving aperture, said stud-engaging portion being divided by a plurality of slits to provide a plurality of exible stud-engaging jaws, a plurality of attaching prongs arising from said annulus at points opposite the said jaws, said prongs being adapted to hook into engagement with the warp and weft threads of the fabric.

8. A fastener socket having means surrounding a stud-receiving aperture for engagement with a cooperating stud, an upstanding wall surrounding said yieldable means, a plurality of attaching prongs extending upwardly from the socket and a nuinbei' of support-engaging ears extending inwardly from the upper edge of said wall between said rongs to provide relatively wide smooth sur aces for engagement against one face of a support to preventl cutting thereof.

9. -A fastener socket installation including an annulus `seated directly against the under side of a socket-carrying medium and rounding a stud-receiving aperture and an u standing peripheral wa l surrounding said yieldable' having yieldable stud-engaging means suryieldable stud-engaging means, a plurality of attaching ron arising from said annular wall an lioo ed into engagement with' the carrying medium and a plurality of carrying me iu'm engaofing ears bent inwardly from th free edge of the annular wall, said ears being located between the attaching prongs and extending substantially transverse to the? axis of the socket at the upper ledge ofthe annulus to prevent cutting of the carrying medium.

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

FRED s. CARR

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