US581088A

US581088A - Electric-wire insulator

Info

Publication number: US581088A
Authority: US
Publication date: 1897-04-20
Anticipated expiration: 1914-04-20

Description

(No Model.)

J. E. SHARPE.

ELECTRIC WIRE INSULATOR.

N0. 581,0 88. Patented Apr. 20, 1897.

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WITNE SES' a I IHVENI'OR: SEW flffi YQI'AT'IIORNEY ATENT @rrren.

JOHN E. SHARPE, OF ONEIDA, NEVJ YORK.

ELEQTRZlG-WinE SPECIFICATION foiming part of Letters Eat-eat No. 581,088, dated April 20, 1897.

Application filed February 8, 1897. Serial llo. 622,482. (No model.)

To (ti/Y whom it may coir/sari Be it known that I, JOHN E. SHARPE, of Oneida, in the county of Madison, in the State of New York, have invented new and useful Improvements in Electricire Insulators, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of electric-wire insulators which are employed for securing said wire to a pole or other suitable support.

The object of the invention is to provide an insulator which shall be more readily, more securely, and more conveniently fastened to its support, and shall be as readily detached when required to be renewed, and shall also be capable of more securely holding the wire; and to that end the invention consists, chiefly, of a block of non-conducting material provided with parallel wire-receiving grooves re spectively in its top and bottom and with channels at opposite sides of and at right angles to said grooves for the reception of fastening devices by which to secure said block to its support; and the invention also consists in a novel construction of a supportingarm and its combination with the aforesaid insulator-block, all as hereinafter more fully described, and set forth in the claims.

In the annexed drawings, Figure l is a face view of an electric-wire insulator embodying my invention. Figs. 2 and 3 are enlarged vertical transverse sections respectively on lines X X and Y Y in Fig. 1 and showing in one instance the wire attached. Fig. 4 is an enlarged longitudinal horizontal section on line Z Z in Fig. 1. Fig. 5 is a detached perspective view of the supporting-arm and the tie-bar used in connection therewith. Fig. 6 is a perspective view of the insulator-block. Fig. 7 illustrates a modification of the insulator-block secured to the supporting-arm, and Fig. 8 is a top plan view of said block.

Similar letters of reference indicate corresponding parts.

a represents the supporting-arm of the insulators. Said arm is fastened to a pole P or other suitable object by means of either spikes or screws d a, passing through the holes a a in the central portion of the arm. This arm i prefer to form of a metal plate disposed vertically edgewise and provided in its longitudinal edge, preferably in the top edge, with recesses or notches Z) b for the reception of the insulator-blocks c 0. These blocks are composed of either glass or porcelain or other suitable and well-known non-conducting material and are provided with parallel grooves b b respectively in their tops and bottoms for the reception of the electric wire f and the bii'1dingwire g.

he sides of the recesses Z) Z) are parallel, and the blocks 0 c are shaped correspondingly to fit closely within said recesses, into which they are inserted from the top thereof. The blocks are provided with flanges c c, which lap onto opposite sides of the arm a and thereby conline the blocks in the recesses b b, said flanges forming vertical grooves, into which the vertical edges of the arm are closely fitted. These recesses are of sufficient depth to cause the top of the arm a to project above the tops of the blocks 0 c and permit the attachment of the tie-bar (Z to the top of the arm. This tie-bar is provided with longitudinal clownwardly-projectin g flanges d d, which embrace the sides ef the arm a and bear on the tops of the blocks c c, which are thus securely locked in the recesses l) l). The tiebar is detachably secured to the arm by bolts 6 c, passing transversely through said parts and provided with nuts 6.

in case it becomes necessary to detach or remove the electric wire f or renew the insulator-block c the bolts 6 c are readily removed and the tie-bar (Z either slipped endwise on the arm a or lifted from it, and then the aforesaid block 0 can be lifted out of the recess 1 It is obvious that the replacing of the insulator-block c is equally as readily accom' plished.

In the modification shown in Fig. 7 of the drawings the insulator-block c is provided with channels or holes c' at opposite sides of and at right angles to the grooves Z) I). Said block is fastened to the arm a or other suitable support by either spikes or bolts passing through said holes.

.iVhat I claim as my invention is 1. An electric-wire insulator consisting of a block of non-conducting material provided with parallel wire-receiving grooves respectively in its top and bottom, and with channels at opposite sides of and at right angles to said grooves, for the reception of fastening devices, by which to secure said block to its support.

2. An electric-Wire support consisting of a supporting-arm providct with recesses in its longitudinal edge, insulator-blocks seated in said recesses and a tie-bar secured to said edge of the arm and extending across the insulator-blocks to confine them in their seats as set forth.

3. An electric-Wire support consisting of a supporting-arm formed of a metal plate sustained vertically edgewise and provided with recesses in its top, insulator-blocks seated in said recesses and provided with flanges lapping onto opposite sides of the aforesaid arm, and a tiebar detaehably secured to the top c securing said tie-bar to the plate substantially as described and shown.

in testimony whereof I have hereunto signedmynamethisSlthdayofJa11uary,1SfJT.

JOHX E. SHARPE. 111. sf]

Wi tnesses:

II. B. Flurru, ,I. J. Liniss.