US1774753A - Chain - Google Patents

Description

Sept. 2, 1930. w. B. LASHAR 1,774,753

CHAIN Filed May 24. 1926 INVENTOR WaZZerB Lasha r' ATTORNEY Patented Sept. 2, 1930 UNITED STATES PATENT OFFICE WALTER B. LASHAR, 0F FAIRFIELD, CONNECTICUT, ASSIGNOR To AMERICAN CHAIN COMPANY, A 001%?ORATION OF NEW YORK CHAIN Application filed May 24, 1926. Serial No. 111,336,

This invention relates to chain and is of particular utility when embodied in the construction of a chain in which strands of wire of suitable length are bent to form open links respectively, the ends of the several strands being bent across each other to close one end of the link and these ends being also bent to form eyes extending beyond the open portion of the link and surrounding the closed end of the adjacent link to effect articulation of the links. I contemplate however the use of my improvements wherever they are adapted by their nature in the formation of chains.

An important object of the invention is to provide for securing together the eye portions of the above described type of link in such a manner that a very strong connection will be effected, and so that the eyes will not only be prevented from lateral separation from each other but each eye will be prevented from opening relatively to the enclosed portion of the connected link.

For this purpose I prefer to weld together the adjacent portions of the eyes throughout a region extending around a considerable portion of their contlguous peripheries, and this welding may desirably extend sutliciently within the contact area of the eyes to insure a thorough union.

The above objects and others will be described and illustrated fully in the accom' panying specification and drawings and pointed out in the claims.

In the drawings,

Fig. 1 is a view in perspective of seve 'al links of a chain in the construction of which my invention has been embodied.

Fig. 2 is a view in side elevation, on an enlarged scale, of one of the links.

Fig. 3 is a view in front elevation of one of the links on an enlarged scale, showing the welded region.

In the preferred embodiment of the invention, the parts designated respectively by the reference character 1 are strands or parts of metal wire, each formed into an open link, the sides 2 of which, and the closed end 3, preferably occupy substantially the same plane.

I have shown a form of link in which the ends 4 of the strand are bent inwardly toward each other to close the other end of the link, so that the end 5 thus closed is substantially in the same plane with the body of the link. The ends of the strands are then bent around in opposite directions to form eyes 6 and 7 lying closely adjacent in planes parallel with each other and on each side of the medial transverse longitudinal plane passing through the link, being therefore at right angles to the general plane of the open link portion or body of the link.

These eyes are formed preferably as suitable step in the general process of manufacstantial portion of the contiguous periphery of the eyes, as shown in detail in Fig. 3, the weld extending to a suiiicient extent between the contiguous faces of the eyes to insure a thorough metallic union therebetween.

The welding operation may be carried out by any suitable means, which need not be illustrated herein, inasmuch as suitable mechanism for this purpose is well-known to those versed in the art of making chains, and the chain formed in accordance with my novel process constitutes an extremely strong articulated device in which the component links are capable of resisting much higher strains than where the links are formed with eyes lacking the metallic union above described.

I claim:

1. A chain link comprising a wire bent upon itself to form an open body portion, and having portions of said wire crossed to close said link, the portions of said wire eX- tending beyond said crossing being formed into contiguous, concentric eyes by bending in reverse directions said extended portions, each eye, including the end of the wire forming said eye, being completely formed in a single plane and said eyes being united nietallically.

2. A chain link comprising a Wire bent upon itself to form an open body portion, and having portions of said Wire crossed to close said link and extended beyond a plane passing through the crossing:itrightanglestothebody portion to form contiguiinns, concentric eyes, said extended portions being bent in reverse directions and welded together each eye, including the end of the Wire forming said eye, being completely formed in a single plane on the opposite side of said crossing plane from the body portions of which said eyes respec tively form extensions. y

In testimony whereof, I have signed this specification.

VALTER B. LASHAR.

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