US232908A - Fbank shaw - Google Patents

Description

(No Model.)

F. SHAW. Flexible Conducting Cord fer Telephones.

No. 232,908. Patented Oct. 5,1880.

UNITED STATES PATENT OFFICE.

FRANK SHAW, OF NEW YORK, N. Y.

FLEXIBLE CONDUCTING-CORD FOR TELEPHONES.

SPECIFICATION forming part of Letters Patent No. 232,908, dated October 5, 1880.

Application filed June 29, 1880.

To all whom it may concern Be it known that l, FRANK SHAW, of the city and State of New York, haveinvented an Improvement in Flexible Conductors for Telephones, of which the following is a specification.

With telephone-instruments it is usual to employ two conductors that are covered with fibrous material so as to insulate the same, and these two conductors are within one cord or covering, except that they are allowed to project at the end portions of the cord, so as to be entered into the clamping-holes of the bindingposts 011 the telephone. These conductors are liable to be injured and become separated or broken in consequence of careless handling of the telephoneinstrument, and this risk is i11- creased if the telephone-instrument slips out of the hand or rolls from the table and .falls, the fall being arrested by the flexible conductor.

My present invention is for the purpose of preventing injury to the flexible conductors near the ends where they unite with the tele phone. This object is accomplished by making the separate conductors of a length sutflciently to pass around the body of the telephone in opposite directions and leading the single colt ductors in such a manner as to confine the double part of the conductor near the side of the tel eph one-instrument. This retains the con ductor in its proper position to the instrument; it prevents any angle or sudden bend being formed inthe single parts of the conductor; it takes all strain in handling, or, if the instrument drops upon loops that are kept of the proper shape by the round body of the telephone-instrument, it insures elasticity and flexibility at the junction of the conductors with the instrument, because such conductors yield freely at the end portion of the double cord and the contiguous portions of the single cord, and there are no sharp angles or corners around which the parts become bent; hence there is nothing that can tend to accidentally injure (No model.)

the conductors, and the freedom of movement is not in any respect abridged.

In the drawings, Figure 1 is a side View of the telephone-instrument with the improved conductors connected therewith. Fig. 2 is a partial elevation at right angles to Fig. l, and Fi 3 is a separate View of the conductors near one end.

The conductors are of usual construction, except that the separate ends I) are of a length sutflcient to extend around the body of the telephone about one and a half times, and at the ends are metallic tips 0, that are adapted to be clamped in the binding-posts e of the telephone D.

In connecting the flexible conductors to the telephone the fork at the end of the single part of the conductors is placed against the side of the telephone near one end thereof. The two parts of the flexible cond uctor are passed around the telephone in opposite directions, and cross each other and also cross the single part of the conductors and pass at each side thereof up to the binding-posts, so that the single portions a of the conducting-cord are confined by the bifurcated portion but the parts are free to yield as the telephone is handled, and the risk of the flexible conductor becoming injured in handling is reduced to a minimum.

I claim as my invention- The improvementherein specified in connecting flexible conductors to telephones, consist ing in passing the single flexible insulated conductors around a portion of the telephone, crossing said two wire conductors near the double part of the conductors, and securing the same to the binding-screws, so as to retain the parts in their proper position and prevent injury to the same, substantially as set forth.

Signed by me this 23d day of June, 1880.

FRANK SH AW. Witnesses GEO. T. PINCKNEY, HAROLD SERRELL.

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