US352437A - Electric insulator - Google Patents

Description

(No Model.\

H. D. WINTON.

ELECTRIC INSULATOR. I

No. 352,437. Patented Nov. 9, 1886.

UNITED STATES PATENT OFFICE.

HENRY D. VVINTON, OF \VELLESLEY HILLS, MASSACHUSETTS.

ELECTRIC INSULATOR.

SPECIFICATION forming part of Letters Patent No. 352,437, dated November 9, 1886.

Application filed October 18, 1886. Serial No. 216,524. (No model.)

Wellesley Hills, in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvementin Electric Insulators; and I hereby declare that the following is a full, clear, concise, and exact description of the same, reference being had to the drawing which accompanies and forms part of this specification.

This improvement relates to insulators for overhead telegraphic and electric lines, and it is designed especially for use in looping into circuit electric lamps, telephones, and telegraphic and other electric instruments, although it is also adapted for employment in other situations and for other purposes.

My invention, as here described, comprises a portion of the improvements in insulators which are shown in the drawings of other Letters Patent granted to me of even date herewith, but it is not therein claimed; and it consists in the combination, with a telegraphic or other electric line or circuit, of an insulator made of glass, porcelain, or other suitable material, and provided at its extremities with metallic hooks or cross-heads or other equiva lent devices, cast, embedded, or otherwise permanently anchored into it, whereby the parts of the line may be so attached to the insulator that they may be dropped below it or carried above or around it, to enable lamps, telephones, or other electric instruments to be readily looped into circuit.

The drawing represents in elevation one of my improved insulators, preferably made of glass, and having at its ends metallic hooks or cross-heads i i. These hooks are cast or in any other suitable manner permanently anchored into the body of the insulator, so as virtually to constitute an integral part of it. \Vith this mode of construction it will be practically impossible, after the parts of the telegraphic or other electric line have been secured to the insulator by means of the crossheads, for any strain by the conducting-wires upon the cross-heads to pull the latter out of the insulator and cause the line to fall down, unless the insulator itself should break.

Means for re-enforcing the insulator against breakage, and for securing the conductingwires from falling to the ground in case of its breaking or in case the metallic cross-heads should by any chance be pulled out under extraordinary strain, are fully described and represented in my other Letters Patent above referred to, and need not be further mentioned here.

The mode of putting my invention into use is as follows: Upon the roofs of buildings on opposite sides of a street may be located fixtures of the usual character for the attachment and support of electric wires. An ordinary telegraphic or electric conducting wire or cable is brought to one of these fixtures, and after being secured thereto is carried the desired distance for locating the lamp or other instrument to be looped into circuit. One of my improved insulators is then placed in the proper position in the line-that is to say,sub stantially directly over or under, as the case may be, the lamp or instrument, or nearly over or under itand to each extremity of the insulator the respective portions of the conducting-wires are attached in such manner that their ends, as at b b, may be dropped below the line or carried above it or around the insulator, or in any other direction which may be necessary to reach the lamp or other instrument. These ends are then properly connected with the latter, which will thus be looped into the circuit. The conducting wire or cable is then run across the street to I another rooffixture, and the operation just described is repeated for the looping in of a second lamp or other instrument, and so on for any number of instruments which are intended to be looped into the circuit. In a similar manner, when desired, a wire can be run into a building, and, by means of one of my insulators placed in a proper position in the line, an instrumentof any kinol-such as a telegraph-instrument, a telephone, or a stoek-indicatorcan readily be looped into a circuit.

I do not limit myself to any particular material for the insulators. They may be made of glass, porcelain, india-rubber,gutta-percha, or any other suitable substance; but when the body A is made of india-rubber or guttapercha the metallic hooks or cross-heads will be far more likely to pull out under the strain of the line than when it is of glass or equivalent material. I therefore consider the former substances inferior for the purpose of cross-heads, or other equivalent devices, cast, this invention, and in practice I propose to embedded, or otherwisepernianently anchored make the body of the insulator of glass or its into it, whereby the parts of the line may be equivalent. so attached to the insulator that they may be 15 what I claim, and desire to secure by Letters Patent, i

The combination, with a telegraphic or other electric line or circuit, of an insulator made 10 of glass, porcelain, or other suitable material,

and having at its extremities metallic hooks,

substantially as and for the purposes set forth.

HENRY D. WINTON.

\Vitnesses:

WM. J. SMITH, JAMES CHARNOCK.

5 Having thus described my improvement, droppedbelow it or carried above or around it,

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