US686464A - Wire chain-link. - Google Patents

Description

Patented Nov. l2, I90I.

A. K. LOVE LL, WIRE CHAIN LINK.

(Application filed May 24, 1901.

(No M ode l.)

UNITED STATES PATENT OFFICE.

ALBERT K. LOVELL, OF NEW YORK, N. Y.

WIRE CHAIN-LINK.

SPECIFICATION forming part of Letters Patent No. 686,464, dated November 12, 1901.

Application filed May 24, 1901.

To aZZ whom it may concern.-

Be it known that I, ALBERT K. LOVELL, of New York, county of New York, and State of New York, have invented a new and useful Improvement in Wire Chain-Links, of which the following is a specification.

The aim of my invention is to provide a wire chain which may be rapidly and cheaply made by machinery and which will be well adapted to resist excessive strain and friction between the links.

To this end it consists of a series of links alike in form, each consisting of a single piece of wire having its two ends turned inward to form loops and extended past each other along the body portion to a point near the ends, the three portions or members thus arranged being twisted together to form the body portion of the link, which is thereafter bent into U form.

Figure 1 represents a side View of my improved chain-link; Fig. 2, a View of the same looking in the direction of the arrow in Fig. 1; Fig. 3, a view showing the first step in forming the link; Fig. 4:, a side view of the same with the members twisted together preparatory to the final bend.

In constructing my chain I provide a suitable length of wire A, of round or outer suitable section. I bend the two ends of these wires inward, forming the end loops at a, and continue each one past the otherand along the body portion to the loop at the opposite end, as shown in Fig. 3, in which it will be seen that the central portion of the blank or product presents three thicknesses of wire. I next grasp these wires at the inner ends of the loops and twist them strongly together until they present the appearance shown in Fig. 4, taking particular care to see that each of the three members assumes a helical form. I next bend this product at the middle, bring- Serial No. 61,766. (No model.)

ing the two arms into parallel or approximately parallel positions, as shown in Fig. 1, the same act bringing the two eyes opposite to each other, so that the body of the next link may be passed between them.

It will be observed that a chain built up in this manner presents three thicknesses of metal at the middle portion, where the next link engages or bears upon it. It will also be observed that the three members of the said arms by reason of their being intertwined or interlocked cannot be separated longitudinally except by the application of a strain sufficient to rupture the metal. It is also to be observed that the body portion of the link possesses a marked degree of rigidity and that this, taken in connection with the two eyes engaging the next link, gives the structure as a whole extreme strength in proportion to the weight of material.

What I claim as my invention is ,1. A chain link of U form with eyes at the ends of its arms, consisting of a single piece of wire, having its two ends bent inward to form the eyes and extended along the eyes past each other and along the body portion,

the three portions being twisted together and v interlocked, substantially as shown and described.

2. A .wire link for a chain, having its body portion composed of a single. piece of wire, bent, overlapped and twisted together to present at the middle three sections of wire, substantially as described.

In testimony whereof I hereunto set my hand, this 6th day of May, 1901, in the presence of two attesting witnesses.

ALBERT K. LOVELL.

Witnesses:

P. T. DODGE, J OHN F. GEORGE.

Images