US1513293A - Strain insulator - Google Patents

Description

Oct. 28 1924.

L. STEINBERGER STRAIN INSULATOR Original Fi led Nov.

Bil

Patented Get. 28, 1924.

UNITED STATES 1,513,2t 3 PATENT OFFICE.

LOUIS STEJN BERGE R, OF BROOKLYN, NEW YORK.

STRAIN INSULATOB.

Substitute and continuation of application Serial No. 264,147, filed November 26, 1918.

This application filed April 3, 1920. Serial No. 370,972.

To all w/iom it may concern:

Be it known that 1, Louis s'rnmnnnonn, a citizen of the United States, and a resident of the borough of Brooklyn, city and State of New York, have invented certain new and useful improvements in Strain insulators, of which the following is a specification.

My invention relates to strain insulators, one or the objects of which is to provide an insulating body portion which is at all times detachable from the strain members of the insulator.

Another object is to so construct the strain insulator that the body of insulating material and the strain members may be rapidly and easily assembled and disassembled.

Other objects will appear from the subjoineo specification and claims.

This application is filed as a substitute and continuation or my application Serial No. 264,147 filed November 26, 1918.

In the drawings in which the same reference character indicates the same part in the several views:

l is a vertical section showing an insulator assembled embodying my invention.

l ig. 2 is a side elevation of the same viewed in t re direction of the arrow in Fig. 1.

Fig. is a plan view or the insulator body, which body is similar in appearance viewed from either end.

The strain members A and A are duplicates of each other, as clearly shown in the drawing, in which the bridge portions consist of rings 10 and 10 connected respectively to the leg portions thereof. The le portions 12 and 1-3 of the strain member A and 12 and 13 of the strain member A are connected respectively to the rings 10 and 10 by the elbows 16, 17 and 16, 17. the elbows being connected to the rings at points diametrically opposite each other, the re specti e leg portions extending vertically laorefrom. Each of the strain members is made up of two parts, the parts and 31 ot' the respective strain members being screwthreaded at the ends of the respective leg portions. Likewise the other separable parts 30 and 81 of the respective strain iembers are yoke shape and are provided with projecting ends 3%, and 3e and 35 which coincide with the screwthreaded ends respectively of the leg portions 12 and A3 and 12' and 18 so that the two portions 30 and 31 ant 30 and 31 of the respective strain members are secured together by engaging the nuts or sleeves 40 and 4:1, 40 and 41.

In forming the body of insulating material I mold it into the shape shown in the drawing, in which there are two circular recesses and 51 one in each face thereby permitting the seating of the rings forming the bridge portions of the strain members. Extending vertically and radially from these circular recesses are grooves 52, 53, 5 k and for receiving the elbow portions or the strain members, and grooves 60, 61, 62 and 63 for receiving the leg portions of the strain members.

A- series of circular grooves and ridges 71 also are formed in the side of the insulator member for the purpose of increasing the surface area thereof.

The grooves or corrugations above described, which are provided for the reception of portions of the strain members, may be either round, square or other suitable shape to lit the particular shape of the strain members.

In the bottom of the grooves in which the ring portions or" the strain members are seated, I provide resilient or yielding washers and 81 so as to take up the mechanical strains and stresses which are imposed upon the insulator body by the strain members.

In assembling the insulator the body B is fitted to one strain member so that the projecting leg members are brought into line with the oppositely disposed grooves in the sides of the insulator body, and the insulator body is thus permitted to seat itself upon the elbows and ring shaped portion of the strain member. The other strain memher is then lowered into place by positioning the vertical legs thereof in the other pair of vertical grooves in the sides of the insulator body ii, and lowered into position as will be clearly understood. The other separable portions of the strain members 30 and 31 are then placed in respective positions and secured to the projecting legs of the complementary strain member by the respective sleeve nuts.

will be understood from the above description and illustration in the drawing, the insulator body and the interlocked strain members may be very quickly assembled or dissassembled, and new bodies of insulating materialyn ay be substituted for the old ones very quickly and readily. I

The insulator may be made of any suitable 'moldable insulating material such as that known in the art as electrose, or it may bemade of porcelain, glass or other vitreous or fireproof insulating material.

As changes of construction could be made within the scope of my invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having now described my invention, what I-cla'im as new and desire to secure by Letters Patent is:

1. In a device of the kind described, a

body of insulating material provided with circular seats in the opposite faces there of for the reception respectively of the bridge. portions of strain members and with vertically disposed grooves in the side to receive the'leg portions of said strain members, said grooves extending from end to end of the insulator bod said verticall disposed grooves being arranged inpairs, each pair being respectively connected. by grooves to one of said oppositely disposed circular seats.

2. in a device of the kind described, a body of insuiating material provided with circular seats in the opposite faces thereof for the reception respectively of the bridge portions of strain members and with verticaily disposed grooves in the side to receive the leg portions of said strain members, said vertically disposed grooves being arranged in pairs and extending from end to end of the insulator body, each pair being hand at the borough of Manhattan, city and State of New York, this second day of jioril, 1920. v

LOUIS STEINBERGER. in presence of IsAnnL R. FLETCHER.

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