US1102645A - Chain. - Google Patents

Description

H. GOGKSHAW.

CHAIN.

APPLICATION FILED APR. 29, 1913.

Patented July 7, 1914.

HERBERT oocKsHAW, ror NEW YORK, N. Y.

CHAIN.

Specification of Letters Patent.

Patented July 7, 1914.

Application inea April 29, i913. serial No. 764,308. v

To all whom it may concern:

Be it known that I, HERBERT CoCKsHAw, a citizen of the United States, residing at New York city, in the county of Kings and State of New York, have invented new and useful Improvements in Chains, of which the following is a specification.

This invention relates to chains and the like and has for its objects the production of a device having rigid sections closely linked together, the production of a chain which is very flexible and which at the same time does not kink, and the production of a chain which is extremely strong and durable.

The invention in its application to chains embodies many advantages over heretofore known chains having hollow rigid sections linked together, where small split rings suffice for the links. These rings are linked and soldered to the ends of adajacent tubes, but because of the relatively small surface contact they have with the tubes they are easily broken. These rings also project beyond the ends of the tubes to a detrimental extent, in that they thus allow considerable longitudinal play between the tubes, and in that they present parts which may become caught upon clothing and other objects and be easily bent and broken. Furthermore, because of their construction these chains do not present as pleasing appearance as chains made in accordance with the present invention.

This invention is herein described in its application to chains for jewelry and the like, but is, of course, not necessarily limited thereto, as it is applicable to all devices of the hollow section type to be coupled.

In the accompanying drawings showing one form of a specic embodiment of the invention, Figure 1 is a plan view of a tubular watch chain; and Fig. 2 is a similar view partly in section on an enlarged scale.

Referring to the drawings, element 1 represents the sections of chain to be linked, here shown as thin tubes. .Each such section is swaged or bulged at its ends, as indicated at 2, to form seats or spaces for the reception of ends of linking means of an adjacent section. The inner diameters of the bulged parts 2 should approximately correspond to the outer diameters of the links 3, as shown. The linking member consists of sections of metal having loops or heads 3 and arms -l and 5 of considerable length, preferably at least longer than the diameter of the head 3.

The loops 3 are larger in diameter than the tubey sections 1 where the arms engage it (preferably of diameter approximately equal to the outer diameter of the tubes), and these arms are a sufficient distance apart to contact with the inner walls of the tube. Arms t and 5, after being interlocked, are firmly. secured in place by solder 6, or otherwise, which is shaped at the ends of the tube to correspond to the contour of a loop of an adjacent tube. By making these arms of a` relatively long length, there is provided a long and large contact area between the arms 4 and 5 and the solder and wall of the tube 1, so that a very strong connection may be made and these arms serve to reinforce the tubes to a great extent. The curved end of the solder, indicated at 7, together with the shape of the tube ends, allows the tube sections to be very closely connected, in fact, closer than is shown in Fig. 2, which is exaggerated slightly for clarity of presentation. The bulged ends 2 of the tubes serve to house the loops 3 and also permit making the loops of sufficient size to secure considerable swivel action between the sections. The exact shape and size of the sections and` linking means is immaterial. The tubes may be square, octagonal or any cross-section, and the material of the sectionsl and linking members may be varied at will, as, for instance, when it is desirable to produce mechanical chains of steel, copper or iron, in which event the links may be riveted, soldered or otherwise secured in position.

What I claim is 1. A chain comprising hollow sections longitudinally linked together by interlocking links having portions secured to the inside of said sections and enlarged portions partly seated in the ends of said sections, and means for securing said portions inside said sections.

2. A chain comprising hollow sections having enlarged ends, linking means consisting of spaced arms positioned inside said sections and loops of larger diameter extending without said sections, said linking means being shaped to conform to said ends, and means for securing thespaced arms in said sections.

3. A chain comprising hollow sections having enlarged ends, linking means consisting of spaced arms positioned inside said sections and loops of larger diameter extending without said sections, said linking means being shaped to conform to said ends, and means for securing the spaced arms in said sections, saidlast mentioned means being shaped to conform to said ends whereby sald sections may be closely linked.

nal linked sections, linking means between the sections having interlocking looped ends, and means .for securing the looped ends in place, said means being shaped to conformto the said ends, whereby the said sections may be. closely linked. o i

'5. A chain comprising hollow sections 'the said sections may be closely linked. V4. A chain comprising hollow flongitudif' 'having enlarged vends, means `between'such l5 sections having interlocking looped ends, and means for securing the looped ends in place, said last mentioned means being shaped to conformi to the said ends, whereby 20 In witness whereof I have hereunto at" iXed my signature in the presence of wit- IleSS'eS.

HERBERT COGKSHAW.

l Witnesses:

l HERMAN GUsTow,

ALFRED M. HoUeH'roN.

Copies of this patent may be obtained for ve cents ;each,.by addressing the Commissioner of Patents,

i Washington, D. C. i f

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