US590480A - William h - Google Patents

Description

(No Model.) I W. H. GRIFFITH.

CHAIN LINK.

No. 590,480. Patented Sept. 21,1897.

A TTOBNE YS.

UNITED STATES PATENT OFFICE.

IVILLIAM II. GRIFFITH, OF NEIV YORK, N. Y.

CHAIN-LINK.

SPECIFICATION forming part of Letters Patent N 0. 590,480, dated September 21, 1897.

Application filed. July 2, 1897. Serial No. 643,194. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM H. GRIFFITH, of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Ohain-Links,of which the following is a specification.

My invention is in the nature of an improved link of a simple elliptical pattern bent out of a single piece of wire without welding the ends and possessing great strength, compactness, and durability; and it consists of a double link having parallel folds with the ends crossed and interlocked at one end of the link, as hereinafter more fully described.

Figure 1 is a side View of the link. Fig. 1 is an edge view from the left-hand side of Fig. 1, and Fig. 1 is an end View from the top of Fig. 1. Figs. 2, 2, and 2 are similar views of a modification. Figs. 3, 3, and 3 are similar views of a further modification, and Figs. 4, r, and 4 are similar views of a still further modification.

Referring to Figs. 1, 1, and 1 the link is made of a single piece of wire and is formed with two parallel elliptical convolutions a a and Z) 6 which lie flat against and exactly coincide with each other. At one end d of the link there are two fiat and parallel bends, while at the other end there is an oblique bend c and within this oblique bend there are interlocked the ends a and b of the wire, which cross each other and form a sort of fork, within which lies the oblique portion 0, which constitutes the middle of the piece of wire.

Taking a piece of wire of the proper length after being formed into a link the wire extends as follows: Beginning in the middle at cit descends on obliquely opposite sides at a and b forms the parallel lower bends d, and then rising on obliquely opposite sides a b it terminates beneath the middle and oblique portion 0 with crossed and interlocked ends a b.

In Figs. 2, 2, and 2 the ends a b of the wire extend past each other in an opposite direction to Fig. 1, and these ends are notinterlocked with each other, but merely cross each other to form a fork to receive the oblique loop 0.

In Figs. 3, 3, and 3 a complete convolution is formed in the middle at c c, forming an eye showing two oblique wraps in said view, as in Fig. 3, and into this eye the ends a and b are entered side by'side from opposite sides of the link and are then pinched or constricted and held by the coils of the eye. With this form when the tensile strain is applied it comes upon the inner wrap of the eye, and thus is made to pinch and hold the imprisoned ends a and Z) all the tighter.

In Figs. 4, l, and 4* the ends of the wire instead of crossing each other and stopping inside the end of the link, as in Figs. 2, 2, and 2 said ends in this modification after crossing each other beneath the oblique bend c are extended upwardly and outwardly and around the portionc, so as to embrace it.

In all these forms of links the portion of the link where the ends of the wire are secured is designed to be swedged or dropforged in suitable dies to compact this end of the link and make it in thickness practically uniform with the other parts and also to more firmly connect the ends against coming loose.

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent, is

1. A link made of a single piece of wire bent to form two coinciding loops arranged side by side and parallel to each other the middle portion of the wire being arranged oblique to the loops, and the free ends of the wire being extended past each other within the oblique middle portion substantially as and for the purpose described.

2. A link made'of a single piece of wire bent to form two coinciding loops arranged side by side and parallel to each other, the middle port-ion of the wire being arranged oblique to the loops, and the free ends of the wire being arranged to cross each other within the oblique middle portion and form a fork or seat for the same substantially as and for the purpose described.

' WILLIAM H. GRIFFITH.

\Vitnesses:

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