US861327A - Split rivet. - Google Patents

Description

PATENTED JULY 30, 1907. E. B. STIMPSON.

SPLIT RIVET.

APPLICATION rILnn Nov. 1. 1906.

UNITED STATES EDWIN BALL STIMPSON, OF NEW YORK, N. Y.

SPLIT RIVE'I.

Specification of Letters Patent.

Patented July 30, 1907.

Application filed November 1,1906. Serial No. 341,563.

To all whom it may concern:

Be it known that I, EDWIN BALL SrIMrsoN, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, city and Stateof New York, have invented certain new and useful Improvements in Split Rivets, of which the following is a specification.

This invention relates to the class of rivets made from solid metal as distinguished from sheet-metal, the blank being formed by forging or pressing and afterward finished by milling or cutting.

The object of the present invention is to provide a split rivet made from a blank having a shank which tapers from its free end toward the rivet-head, the said shank being split by milling or cutting to form two clenching prongs. The prongs may be beveled or sharpened at their tips in any of various ways, as shown in the accompanying drawings.

In these drawi'ngsFigure 1 shows the primary blank of the rivet, and Fig. 2 shows the same after the prongs are formed by slitting the shank. Fig. 3 shows the rivet of Fig. 2 after the tips of the prongs have been beveled. Fig. 4 is an end view of the rivet shown in Fig. 3, and Fig. 5 is a side view of the same taken at right-angles to the point of view of Fig. 3. Figs. 6 and 7 show different forms of the rivet, produced by variations in the slitting and beveling. Figs. 8 and 9 are sectional views illustrating the use of the rivet in connection with an apertured plate; and Fig. 10 is a similar view showing how it is set in a soft material without a plate.

Fig. 1 shows a rivet-blank formed by forging or the like, the blank having a head 1 and a shank 2, which latter is largest at its free end and tapers toward the head, with which it is integrally connected.

Fig. 2 shows the shank split by a slit 3, to form two prongs 4, 4. In this figure the slit is somewhat V- shaped, and the inner faces of the prongs are substantially parallel with their respective outer faces, so'that the prongs normally diverge from the head of the rivet to the tips of the prongs. After the slit 3 is producedpreferably by milling out the metalthe tips of the prongs may be beveled, as seen at 5 in Figs. 3, 4 and 5.

In Fig. 6 the slit 3 is shown as of uniform width, and in addition to the bevels 5 on the prongs there are inner bevels 6.

In Fig. 7 the slit is the same as in Fig. 6, but the outer bevels are omitted and only inner bevels are employed on the prongs.

In Figs. 8, 9 and 10, P designates the plate, and G, the goods or material inwhich the rivets are clenched.

The construction described provides a rivet with clenching prongs which are normally strong and which are well adapted to stand the excessive wear to which they are commonly subjected in use, especially on belts.

It is not important to the present invention what form the head of the rivet may be, or what size it may have; this will depend in a good degree on the use to which the rivet is to be put. The important feature is the taper of the shank which produces divergence of the clenching prongs and thickness of the same at or near their outer ends. It will be noted the outer faces of the prongs diverge in all of the forms of the rivet shown.

Having thus described my invention, I claim 1. A metal rivet, having a head, and two clenching prongs which spring integrally therefrom the outer faces of said prongs diverging toward their tips, and the crosssections of the prongs being greater near the outer ends of the same than at their bases at the head of the rivet.

2. A metal rivet, having a head and two clenching prongs which spring integrally therefrom, the outer faces and edges of said prongs diverging toward their tips, and the prongs being wider at their outer ends than at their bases near the head.

3. A metal rivet, having a head and two clenching prongs, the outer faces and edges of said prongs diverging toward their beveled tips and from the head, and said prongs being of uniform thickness from the head to their beveled tips and widest at their tips.

In witness whereof I have hereunto signed my name this 31st day of Oct. 1906, in the presence of two sub scribing witnesses.

EDWIN BALL STIMPSON.

Witnesses:

H. G. HOSE, WILLIAM J. FIRTH.

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