US1730026A - Upholstery staple - Google Patents

Description

Oct. 1,1929. s. l.. WARREN UPHOLSTERY STAPLE Filed Aug. 25, 1928 Patented Get. l, 1929 i ai man

SIMON L. WARREN, OF QUINC'Y, MASSACHUSETTS UPHGLSTERY STAPLE Application filed August 25, 1928. Serial No. 301,979.

This invention relates to .a form of attaching device, or staple which is primarily designed for the purpose described in my pending application Serial Number 272,707, liled April 25, 1928, viz for attaching the end or bottom coils of the spiral springs employed in upholstery to the webbing employed in the bottom and back frames to support the same, so that the springs will be securely held from displacement in any respect.

While the construction disclosed in said application is more satisfactory, mechanically,

than any other construction of which l am at present aware, and is particularly desirable for use in the construction of the higher grades of furniture, a less expensive construction, which is suitable for use in connection with the lower grades of furniture, is desirable. The primary object of the present invention is to produce a form of staple which may be employed in lieu of my said prior construction and may be manufactured at a reduced expense, as compared with the manufacturing cost thereof.

I accomplish this object in the manner hereinafter decribed and as illustrated in the accompanying drawing, in which Fig. l is a plan view of a portion of a webbing support illustrating the manner in 3o which staples embodying the invention are employed.

Fig. 2 is a sectional view at' line 2-2 of Fig. l.

Fig. 3 is a sectional view at the same point illustrating the staple prior to clenching.

Fig. 4. is a bottom side view, after clenchm0'.

zFig. 5 is a perspective view of the staple as formed for use. a0 According to my invention l provide a wire of suitable length, the ends of which are cut so that they are pointed, and bend the same to provide a pair of pointed prongs a and b at each end which are extended in parallel relation, the intermediate portion of the wire being bent to extend semi-circularly and reversely in opposite directions from each prong, and to form saddle end portions c and cl, and then semi-circularly, each towards the other prong, to form loop portions e and f, from which point the wire is eX- tended reversely and then semi-circularly to form a middle saddle portion g, the three saddle portions e, g and CZ being arranged in parallelism and spaced apart by the diame- 5,; ters of the loop portions e and f. The internal diameter of the semi-circularly shaped saddle portions will be made to correspond to the diameter of the wire coil which they are to engage, and the inner surface of said co saddle portions are approximately arranged in the same cylindrical surface.

ln practice, a special driving tool is provided which is adapted to receive the semicircularly curved saddle portions, so that when a spring, as It, is tobe attached to a webbing bottom z', the staple will be placed astride the end coil and its prongs will be forced thru the webbing, as shown in Fig. 3, and then by employing suitable clenching means, the end portions of the prongs a, b will be bent oppositely beneath the spring coil, as shown in Figs. 2 and il, and into engagement, thru the interposed webbing, with the correspondingly adjacent loop portions e and f, so that the end portions of the prongs extend at approximately right angles to the adjacent portions thereof. The coil is thus securely attached to the webbing, as the coil and webbing are clamped between the saddle portions of the staple and its prongs and the webbing is also clamped between the loop portions c and f and the prongs, as shown in Fig. 2. vWhere the prongs are passed thru portions of the webbing strips which cross each other, as will be the case in most instances, the strips will also be secured together at these points, so that relative displacement of the strips will be prevented.

As the prongs are located at the opposite ends of the saddle portion, they will not engage each other `when clenched, but will lie in parallel and point oppositely, as shown in Fig. 4f.

Also, as in said prior construction, a saddle portion of substantial length is provided by means of the three loop portions c, g and d, so that a strong frictional engagement between the staple and coil is secured which Will prevent longitudinal movement of the coil relative thereto.

This construction may be readily formed by a Wire bending operation, so that the cost or' product-ion may be substantially reduced, as compared With cost of the prior construction, and there Will be no Waste of material.

. I claim:

l. A staple for the purpose described, which consists of a length o1c Wire bent to provide a pair of semi-circularly shaped end saddle portions disposed in approximate parallelism, each being extended at one side to form diagonally opposite prongs and being extended reversely at their opposite sides to form a semi-circularly shaped saddle portion disposed therebetween. l

2. A staple i'or the purpose described. which consists of a continuous length of Wire bent to provide three semi-circularly shaped saddle portions arranged side by side for simultaneous engagement With the same cylindrical surface, the diagonally opposite sides of the end saddle portions being' eX- tended to form attaching,` prongs and the intermediate saddle portion having a loop form connection with the sides of vsaid end saddle portions opposite their respective prongs.

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

SIMON L. WARREN.

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