US296475A - smith - Google Patents

Description

(NoModeL) I x.- A. SMITH, Jr.

. IAGK ORIFASTENBR. v No. 296,475. v Patented Apr. 8, 1884.

9 a a. 1 in N. PETiRS. mammography Wauhinglon n c.

FRANKLIN A. SMITH, JR, OF PROVIDENCE, RHODE ISLAND.

TACK O R FASTENER.

ID'PECIPICAI'ION forming part of Letters Patent No. 296A75, dated April 8, 1884:.

Application filed November 24, 1883. (No model.)

To aZZ whom it Ina/y concern Be it known that I, FRANKLIN A. SMITH, J r. a citizen of the United States, and a resi' dent of the city and county of Providence, and State of Rhode Island, have invented an Improvement in Tacks or Fasteners, of which the following description, in connection with the accompanying drawings,is a specification, like letters on the'drawings representing like parts.

My invention relates to a cut tack or fastener for carpets, buttons, and other uses, the

the usual upsetting process for the formation head of the same, together with its prong integral therewith, being stamped or punched into ultimate form from metal, thus avoiding of the head, whereby the form or configuration of the tack or fastener after it has been punched or stamped from the metal stock is not changedor affected to impair the original strength of the metal.

To this end my invention consists of a metallic cut tack or fastener composed, essentially, of a head and 'prong integral therewith, said prong projecting from the cut edge or under surface of the head ,and tapering on all its sides, the whole punched or stamped from metal stock, with the metal in said tack or fastener of the same strength and in the same condition in which it existed in said stock from which it was cut.

Figure 1 is a side elevation of my improved tack. Fig. 2 is an endview thereof. Fig. 3 is a perspective view with the point uppermost. Fig. 4 is a perspective view of a piece of tapered metal from which one of my improved tacks has been punched or cut; and Fig. 5 is a perspective view of my improved tack, with the addition of small holding or retaining spurs projecting near each end from the under surface of the head.

The tack or fastener consists, essentially, of a head, a, and prong b, integral therewith, said prong projecting from the cut edge or under surface, 0, of the head, with two .of its sides flush or even with the sides of the head a, and with all of the sides of said prong b made tapering, preferably from heel to point, as clearly shown in Fig. 3 of the drawings,

the whole being punched or stamped from tapered metal, and ready for use as a tack or fastener without further manipulation and without upsetting the metal therein to form the head a, as is usual in the manufacture of ordinary tacks, or modifying the form of the tack, or affecting or changing the metal of said tack from the condition and strength in which it existed in the metal stock from which it was cut.

As shown in the drawings, the tack has a strong broad head, a, which may be made slightly convex on its upper surface and concave on its under surface or edge, 0, so that when in use as a carpet-tack, for instance, the ends of said head will bind or tend to hold or press the carpet against the heel of the prong b, andt-hus afford a firm holding or securing device.

In this connection I would say that in some of, the uses to which tacks are put they are subjected to a side'wise or torsional strain, that tends to give to the tack a lateral or partially rotating movement, which it is apparent should, if possible, be prevented. It will be noticed that my improved tack, with its broad head and pointed prong, made substantially square in cross-section, is especially adapted to prevent such lateral movement being imparted thereto. Should it he desired to more thoroughly prevent lateral movement of the tack, however, I may form the tack substantially as shown in Fig 5, wherein two small spurs project from the under surface, 0, of the head a.

\Vithout departing from the spirit of my invention, the 'metal stock from which the tack is produced may be of such form that when one of my improved tacks is punched therefrom the sides of the head a, thereof will be parallel.

7 hat I claim is The herein-described metallic cut tack or fastener, consisting, essentially, of the head a, with tapering sides and extended portions or ends, and having the convexed upper surface and concaved under surface, 0, said under surface being provided with spurs, as represented, and the pointed prong b,integral with the head, projecting from the eoncaved under to this specification in the presence of two sub surface, '0, thereof, and tapering on all its scribing witnesses.

sides from heel to point with two of its sides flush or even with the tapered sides of said FRANKLIN SMITH 5 head, all as shown, and for the purpose speci- I Witnesses:

fied. GEO. W. PRENTIOE; In testimony whereofI have signed my name CHARLES GREENE.

Images