US1176618A - Insulator. - Google Patents

Description

W. E. SWEARINGEN. INSULATOR. APPLICATION man APR.2\, ma.

Patented Mar. 21, 1916.

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/l-/ WALTER E. SWEARINGEN, OF MONTGOMERY CITY, MISSOURI.

INSULATOR.

1`1l763618 Specification of Letters atent.

Application filed April 21, 1915.

T 0 all whom t may concern:

Be it known that l, lVALTER E. SwEAR- wenn, a citizen of the United States, residing at Montgomery City, in the county of lrlontgomery an State of Missouri, have invented certain new and useful linprovements in insulators; and l 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.

My invention relates to new and usefu improvements in insulators and more particularly to that class adapted to be used for mounting telephone, telegraph and electric wires upon posts or other devices, and my object is to provide an insulator o lass, porcelain or similar substance having a slot extending transversely thereof for the reception of the wire.

A further object is to provide an automatic locking mechanism for holding the wire against undue longitudinal movement. And a further object is to provide a shield for preventing water and the like from entering the slot in the insulator.

Other objects and advantages will be hereinafter set forth and more particularly pointed out in the accompanying specification.

In the accompanying drawings which are made a part of this application, Figure l is a side elevation of the insulator as applied to use. Fig. Q is a similar view thereof with the protecting portion of the shield broken away. Fig. 3 is an elevation at right angles to that shown in Fig. l, and Fig. 4 is a top lan view of the insulator.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indicates the insulator which may be constructcd in any preferred manner an 2 indicates the wire which is to be secured to the insulator. ln order to quickly attach the wire to the insulator and without having to bend the same or otherwise mutilate the galvanized surface thereon, a slot 3 is extended inwardly from one edge of the insulator to a point adjacent the vertical center thereof and in order to securely lock the wire in engagement with the insulator and prevent undue lengthwise movement of the wire, a locking rocker al is introduced into a cavity 5 which is extended inwardly from one edge of the insulator l, said cavity ex- Patentcd Mar. 21, 1916. Serial No. 22,872.

tending above the slot 3 so that the locking rocker may be introduced above the wire and rested thereon.

rhe locking rocker 4 is substantially semicylindrical, the curved face thereof resting upon the wire il and is composed of substances such as rough porcelain, lire clay or the like that will readily adhere to the wire when a lengthwise pull is given the wire, thus causing the locking mechanism to partly rotate when one edge thereof is brought into engagement with one wall of the cavity, the continuous pull upon the wire causing the edge of the locking rocker to seat in the corner formed by the liunction o the side and root walls of the cavity. hen the edge of the locking rocker is firmly seated in the corner formed by the roof an side wall of the cavity, wedging pressure will be directed on the locking rocker which will result in binding the wire between the bottom of the slot 3 and the locking rocker, thus holding the wire against further longitudinal movement. By providing a lock of this class and arranging the slot in the insulator as shown, the wire can be stretched from insulator to insulator as it is being installed and can be very quickly attached to the insulator, as it is only necessary to introduce the wire into the slot and move the wire inwardly the full length of the slot, then draw the wire taut and introduce the locking, rocker into the cavity, and it will be readily seen that as soon as the pull upon the wire is released, the locking rocker will be wedged against the wire and said wire held against further longitudinal movement. It will likewise be seen that should the wire break between any two of the insulators, it will be prevented from slacking at a point beyond said insulator as the locking rocker will immediately reverse an wedge the wire from travel in the opposite direction.

ln order to prevent water, snow and the like, from entering the slot 3 or cavity 5, a ring like shield G is placed around the insulator, said shield having a flaring apron portion 7 which extends below vthe Slot in the insulator and in view of the flare of the apron, water and the like is carried away from the insulator and prevented from entering the openings therein. edge of the apron is provided with notches 8 to accommodate the wire Q', said notches being of such dimensions as to fully clear the 1?' t versely across the The shield 6 is preferably constructed of elastic material so that when stretched over the insulator, it will readily adhere thereto, but it will be readily understood that the shield may be formed of any suitable material.

In some instances the roof of the cavity 5 may be rounded or oval as shown by dotted lines in Fig. 2, thus aiding the locking rocker in its operation.

What I claim as new and desire to secure by Letters Patent is 1. An insulator having a slot extending inwardly from one edge thereof to receive a entered in said cavity and Wire,

one edge of the rocker engaging the wall of the cavity and Copies of this patent may be obtained for five cents each, by addressing1 the Washington, D. C.

the curved face thereof adapted to engage said wire and hold the same against undue longitudinal movement.

2. The combination with an insulator having a slot and a cavity therein, of an elastic ring like shield surrounding said insulator immediately adjacent the slot and cavity therein, said shield having at its lower edge a downwardly and outwardly flaring apron In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WALTER E. SW'EARIN GEN.

Vitnesses J. R. APPBURG, T. M. ULBRICHT.

Commissioner of Patents,

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