US1066395A - Insulator. - Google Patents

Description

O. J. FISHER.

INSULATOR.

APPLICATION FILED APR. 30, 1912.

1,066,395. r I Patented July 1, 1913.

UNITED STATES PATENT @FFICE.

INSULATOR.

Specification of Letters Iatent.

Patented July 1 1913.

Application filed April 30, 1912. Serial No. 694,137.

To all whom it may concern:

citizen of the United States of America, re'

sidin at Walpole, in the county of Norfolk and tate of Massachusetts, have invented new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to improvements in insulators and has particular application to insulators for sus ending or holding a current carrying con uctor upon a support such as a tree, pole or the like. i

In carrying out my present invention, it is my purpose to provide an insulator whereby an electric current carrying conductor may be supported upon a pole, tree or the like and insulated therefrom in such manher as to prevent the grounding of abnormally heavy currents in the event of suchcurrents passing through the conductor.

It is also my purpose to provide an insulater which shall embrace the desired features of simplicity, durability and efiiciency coupled with cheapness of cost of manufacture and installation.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawing: Figure l is an end elevation of an insulator constructed in accordance withthe present invention, the same being shown applied to a support. Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged fragmentary sectional view thereof. I

Similar reference characters designate like parts throughout the several views.

. Referring now to the accompanying drawing in detail, 1 indicates the main body portion of an insulator constructed of suitable insulating material such as wood or the like. Threaded into the upper end of the hody l is the shank 2 of a head 3 bifurcated to form spaced parallel apertured ears 4., 4 and pivoted'between the ears l, 4 by means of a pivot pin 5 is one extremity of an elongated shank 6 formed for a portion of its length with lag threads f? adapted to'he threaded into an ob ect such as the pole A,as shown in Fig 1. Thus, the hody portion, by means of the pivot pint may be swnngabout the shown 6 to facil tate the application of the electr c current carrying conductor to the support. Threaded into the free end of the body 1 opposite from the head 3, is the shank 8 of a connector 9 preferably. of a contour similar to that or the body 1 and provided with oppositely disposed cars 10, l0 and formed intermediate such ears with a noircircular groove 11. Mounted within the groove 11 of the connector 9, is an insulating sleeve 12 preferably of cylindrical outline and composed of glass, or other insulating material of a like nature and provided with a centrally arranged opening 13 through which an electric current carrying conductor a; is adapted to be passed. The portion of the insulating sleeve 12 within the groove 11 of the connector 9 is provided-with a groove 14 of aishapeidentical to that of the groove 11 so thatinfthefastening of the sleeve to the parts is prevented. In order to facilitate the application of the Wire to the insulating sleeve 13 and to prevent mutilation of such wire when being applied to the sleeve, the portion of the sleeve, in contact with the connector 9 is cut out to provide a wedge block 15 designed to the-removed from the apply such insulator to the wire, the inclination of the walls of the sleeve, incident to the Wedge shape of. the block '15, serving to prevent mutilation of the conductor in the application of the same tothe in'sulator. The lugs 10, 10 projectlaterally and beyond the sleeve and receive the free extremities of a U-shaped strap 16 disposed within a groove in the sleeve, such ends of the strap being provided with nuts 17, 17,

,adapted to hold the insulating sleeve to the connector 9 through the medium of the strap 16.. 1

From the foregoing description taken in connection with the accompanying drawing,- the construction and manner of employing my invention will be readily apparent to those skilled in the art, and should the insulating sleeve become damaged it will be seen that the electric currentcarrying conductor would still be insulated from the shank 6 and the support A by the main body 1.

While I have herein shown and described one preferred form of my invention by way. of illustration, it is to be understood that I do not confine myself to the exact details of construction herein described and define-- ated, as modification and variation may be connector 9 independent movement of the remainder of the sleeve when it is desired to body portion and having a bifurcated end provided with alining apertures, an elongated shank having one end pivoted With the bifurcated end of the shank by means of a pivot pin passed through the said apertures and having the opposite end thereof threaded to engage an object, a connector secured to the opposite end of said body portion and provided with oppositely disposed ears and a non-circular groove between said ears, an insulating sleeve having a portion conforming to the contour of the groove in said connector and disposed within said groove and a U-shaped strap surrounding said insulating sleeve and having the free ends thereof passed through the ears on the said connector, whereby accidental displace ment of the sleeve from the body is avoided.

In testimony whereof I afiiX my signature in presence of two Witnesses.

OLIVER J. FISHER. Witnesses LEO J. HEBERT, LEVI MA'ITOCKS.

Copies, of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. C.

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