US601195A - John w - Google Patents

Description

J. W.- BOOH.

HIGH POTENTIAL INSULATOR.

(No Model.)

N0. 601,195. Patented Mar. 22,1898.

W ll a vb v M 7 n INVENTOR om BY- W MW ATTORNEYS.

WIT SSES:

'd-cd/wfir 1 UNITED STATES PATENT OFFICE.

JOHN W. BOOH, OF EAST LIVERPOOL, OHIO, ASSIGNOR TO THE It. THOMAS & SONS COMPANY, OF SAME PLACE.

HlGH-POTENTEAL lNSULATOR.

SPECIFICATION forming part of Letters Patent No. 601,195, dated March 22, 1898.

Application filed February 1, 1898. Serial No. 668,770. (No model.)

To all whom it may concern: the parts may be secured together in other Be it known that I, JOHN \V. BOG-H, a citizen ways, as by sulfur or other cement after they of the United States of America, residing in have been separately vitrified and glazed, if East Liverpool, Columbiana county, State of of porcelain, or molded, if of glass.

Ohio, have invented an Improved High-Po In the construction shown in Fig. 1 the tutential Insulator, of which the following is a bular supporting-post P is shown as made in specification. one with the central part A of the body of The object of my invention is to produce a the insulator. The tubular post may, howstrong and effective insulator for high-potenever, be made separate from the body parts, 1o tial electric-transmission lines, and one which as illustrated in Fig. 2, where the centralbody will not only offer high resistance to leakage part A is shown as having a central opening of current through the body of the insulator, a (screw-threaded in thisinstance) for the inbut also will prevent arcing of the current sertion of the upper end of the supportingfrom the edges of the petticoats of the insupost P. This supporting-post and central 15 lator during wet weather, and more particupart may be secured together by any suitable larly to the metal pin which binds the insumeansas, for instance, by glaze in the course lator to the supporting-arm. This object I of manufacture, it the parts are to be of porattain by mounting the petticoat-body of the 'celain, or after manufacture by sulfur cement insulator upon an insulating-post, preferably or otherwise. The post may be made out of 20 of the same material as the body, and which two molded tubes 13 19, one fitted within the passes down through an openingin the wooden other and secured together by an intervening cross-arm or support, the metal fastening-pin tubular layer of glaze, as indicated at g in being secured in the post. Fig. 1.

In the accompanying drawings, Figure 1 is In any construction described the support- 2 5 a vertical sectional view of one form of my ing-post P or P is at its lower end adapted high-potential insulator, and Fig. 2 is acorreto enter an opening made in the wooden or sponding view of a modification. other cross-arm O (shown by dotted lines) and I prefer to use porcelain in the construction an annular shoulder s is formed on the post of my insulator, both for the body of the into rest on the cross-arm and form a point of o sulator and for the tubular post; but glass or support.

other suitable like or equivalent material may The Vertical opening in the support P or P be used for either or both parts. I prefer to is of a diameter suitable to receive the iron make the petticoat-body in two or more parts. or other metal securing-pin R, which is indi- In the drawings I have shown two petticoats cated by dotted lines and which extends up 8 5 5 13 I3, each pet-ticoat part being like an ininto the post to any desired height and is severted bowl, with the smaller one nested into cured by a suitable cementing composition. the larger one. At the top of the outer bowl A nut 72 and a washer w (indicated by dotted there is a head Z) with a central cross-notch lines) complete the means for securing the b for the electric conductor and side grooves whole in place on the crossarm. In Fig. 1 o 40 d for the wire by which the conductoris to be the securing-pin is shown as having a polygoheld down. The central part A of the body nal head, while in Fig. 2 the pin is shown as of the insulator constitutes in this case a notched to get a hold in the cement. third part of the insulator. These three parts, In the described construction it will be seen if of porcelain, may be secured together either that the pin R is so well protected by the tu- 5 45 during the process of vitrifaction or in the bular post which sheaths it and passes down glazing (if that is done separately from the through the cross-arm that leakage of current vitrifaction) in order to make in effect asingle or arcing across from the edges of the pettihomogeneous piece. I prefer the method decoat to the pin (liable to occur on high-potenscribed in my application Serial No. 656,155, tial circuits of present construction) is here 50 whereby the parts become united with layers obviated. The exposed end of the pin and of glaze between the conductor and pin; but its nut and washer on the under side of the in the notch b to give trouble.

I claim as my invention 1. A high-potential petticoat insulator having a Vertical tubular post of porcelain or equivalent material, secured to and supporting the petticoats of the insulator and having its lower end adapted to fit into an opening in the cross-arm and a metal fastening-pin in the said tubular post, substantially as described.

2. A high-potential insulator having a supporting-post made in one with a part of the body of the insulator, said supporting-post having its lower end adapted to fit into an opening in the cross-arm, with a fasteningpin secured in the post, substantially as described.

3. A high potential porcelain insulator formed of parts united together and comprising a body part with one or more petticoats and a supporting-post all of porcelain united together, the lower end of the supporting-post being adapted to fit into an opening in the cross-arm to receive a securing-pin from the under side, substantially as described.

4:. A high potential porcelain insulator formed of parts united by intermediate layers of glaze and comprising a body part with one or more petticoats and a supportingpost whose lower end is adapted to fit into an opening in the cross-arm to receive a securing-pin from the under side, substantially as described.

5. Ahigh-potential porcelain insulatorhaving a supporting-post made of two tubes, one fitted within the other with an intermediate tubular layer of glaze, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN lV. BOCII. lVitnesses:

L. M. THOMAS, JOHN TAYLOR.

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