US521018A

US521018A - Connection for electric wires

Info

Publication number: US521018A
Authority: US
Publication date: 1894-06-05
Anticipated expiration: 1911-06-05

Description

(No Model.) 7

J. Y. DE MOTT. CONNECTION FOR ELECTRIC WIRES.

No. 521,018. I Patented June 5, 1894.

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UNITED STATES PATENT OFFICE:

JAMES Y. DE MOTT, OF NEWARK, NEW JERSEY.

CONNECTION FOR ELECTRIC WIRES.

SPECIFICATION forming part of Letters Patent No. 521,018, dated June 5, 1894.

Application filed January 6 1894. Serial ITO-495,971- (No model.)

To all whom it may concern: Be it known that I, JAMES Y. DE Morr, citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Connections for Electric Wires; and I do hereby declare the following to be a full, clear, and exact description of the invention, such'as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification. I 5

The object of this invention is to reduce the cost of construction, to obtain increased tensile strength at the joint, to secure more perfect conductivity, to reduce the time required in making connections, and to secure other advantages and results some of which will be referred toin connection with the description of the working parts.

The invention consists in the improved joint or connection for electrical wires or conductors, having the arrangements and combinations of parts all substantially as will be hereinafter set forth and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several views, Figure 1 is a plan of the joint or connection. Fig. 2 is a side elevation of the same, showing a series of wrinkles formed therein. Fig. 3 is a sectional view taken on line 00, and Fig. 4 is an end detail of the joint or connection showing the same devoid of the wires.

In the drawings, a, a, indicate the conducting wires and b the joint or coupling piece. The said coupling piece comprises a single plate, the central longitudinal part of which is bent to form a central rib which, when the ends of the conducting wires are arranged side by side in relative position with the coupling piece, extends upward between said wires, closely engaging the same to a point in line with the centers of said conducting wires. The opposite edges of said coupling piece are inwardly bent toward the upper edge of said rib, so that true cylinders are formed adapted to hug the conductors at every part of the surrounding surface, but at the points of engagement of said rib and edges, there is an open joint formed so that the metal of the hollow wire, should the latter be larger, interiorly, than the diameter of the wires, may be brought down hard upon said wires and not draw away as it would were the coupling piece a continuous inclosure. Thus the two tubes may be brought into intimate contact with the overlapping wires and a more perfect conductivity secured and when the swaging tool is operated to obtain the quick and firm union to resist tensile force, no recesses or cavities will be formed to receive water and spread the connecting metal by freezing said water.

I may hold the Wires in permanent connection with the joint plate by solder, set screws, or other similar means, but I prefer to secure such permanent union by forming the series of wrinkles or turns in the wire as shown in Fig. 2, the wrinkles being formed by a suitable tool in the same operation as that which 'forces the tubes into close contact with the wires. The wrinkles being formed, the wires are securely held in permanent relation to the joint so as to resist great tensile draft.

Having thus described the invention, what I claim as new, and wish to secure by Letters Patent, isj 1. The improved electrical connection or joint, comprising a plate of conductive metal bent longitudinally at the center to form a raised rib and having its opposite edges turned onto said rib and forming a joint thereat, substantially as set forth.

2. The combination with the overlapping wires of a sheet metal plate centrally bent to form a ridge which closely hugs the sides of the said wires and extends to a point, substantially in line with the centers of the same, the opposite edges being turned over said .wires onto said rib, and the whole being crimped transversely to hold the parts together, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 3d day of January, 1894:.

JAMES Y. DE or'r.