US1944390A - Electrical conductor - Google Patents

Description

Jan. 23, 1934. R. rAcxvls ELECTRICAL CONDUCTOR Filed July 23, 1931 INVENTOR. @www e w ATTORNEY.

'Patented Jan. l23, 1934 v 4,UNrrEn l STATES PMEN'I;l ol-Fica 1,944,391) ELECTRICAL coNDUc'ron Buben Aceves, New York, N. Y.

Application July z3, 193i. serial No. 552,516

1 Claim.

This invention relates to improvements in electrical conductors.v

The principal object of the invention is to provide a iiexible elastic conductor for electrical 5 current.

A further object is to provide a conductor having an'extensible covering ot conducting material adapted to be heated by the passage of electricity therethrough.

A conductor of this invention is adapted primarily for use in instances where it is desired to apply both heat and pressure as in connection with certain therapeutical and hair waving appliances. .These uses, however, are merely cited as examples, it being understood that I do not limit myself in respect to the use to which the conductor may be applied.

According to my invention, the conductor has an elastic core of non-conducting substance surrounded by a covering of conducting material which covering is adapted to be extended and contracted with the elastic core without inter--A tering with the passage of electricity through said covering. l

The accompanying drawing illustrates one embodiment of the invention, in which:-

-Figure lis a cross-sectional view of the conductor;

Fig. 2 is a side elevation thereof, showing the central elastic core, the intermediate covering of non-conducting material, and the outer covering o! conducting material. and, l

lll'lg. 3 is a side view of the conductor stretched ln the direction of the arrows.

Referring to the drawing, 10 represents a core ol' non-conducting elastic substances such as rubber. The core may be formed either of a plurality of pieces, as shown, or of a single piece. 11 is an intermediate covering formed oi! woven cotton, silk, asbestos or other suitable non-conducting material, with the threads crossing one another diagonally or extending on the bias. 12 is an outer covering formed o! woven tinsel or wire of a character suitable for conducting elec- `4j; trie4 ement and adapted to be heated by the 'passage of electricitytherethrough. The illaments, wires or metallic threads of the conducting covering 12 also cross one another diagonally or on the bias.

The covering 11 serves to insulate Ythe core e0 from being unduly heated by the passage of electrical current through the conducting covering. While, to these ends, it is advisable to use an intermediate covering 11,. such a covering is not an indispensible partof my invention. Furthera5 more, -if desired, an insulating covering, similar to` the covering 11, may be applied around the outside of the'conducting covering 12.

AThe fact that the threads,y wires or filaments of the woven coverings 1l and 12 cross one an- 7o other diagonally enable these coverings to be extended or contracted with the extension or contraction of the elastic core. This will be apparent on referring to Fig. 3 where it is seen that when the conductor is stretched lengthwise in the direction of 'the arrows, the opening or meshes between the threads, wires or filaments of the coverings are enlarged,v thus -permitting said coverings to' stretch with thc elastic core to the limit of the extensibility of the coverings, so and this stretching may be affected without in any way interfering with the passage of electrical current through the, conducting covering 12.

While I have shown the invention embodied in a conductor of circular cross-section, it is to 'be understood that the conductor may be of other shapes and that various modications in the construction may be made without departing from the scope or spirit of the invention.

What I claim is:-

A resilient electrical heating unit comprising an elastic core, an intermediateA woven covering of non-conducting material, and an outer'covering of woven material formed of metallic threads capable of conducting electricity and of being heated by the passage of current, said in-` termediate and ,outer woven coverings being adapted to stretch with the core. A

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