US429316A

US429316A - Tension-bracket for trolley-wires

Info

Publication number: US429316A
Authority: US
Publication date: 1890-06-03
Anticipated expiration: 1907-06-03

Description

(No Model.) I TENSION BRACKET P011 TROLLEY WIRES. No. 429,316. Patented June 3,1890.

' of a shoe to support the wire, a rod secured UNITED STATES PAT NT OFF-ICE.

WILLIAM D. MACQUESTEN, OF NEI V YORK, N. Y., ASSIGNOR TO CHARLES L. EDGAR, TRUSTEE, OF BOSTON, MASSACHUSETTS.

TENSION-BRACKET FOR TROLLE Y-VV IRESL SPECIFICATION forming part of Letters Patent No. 429,316, dated June 3, 1890.

Application filed October 9, 1889.

To all whom it may concern.-

Be it known that I, IVILLIAM D. MAOQUES- TEN, of New York city, county of New York, State of New York, have invented an Improvement in Pull-Off Brackets, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to electric railways, and has for its object to provide a pull-off bracket of novel construction, as will be described, especially adapted to be employed on curved portions of the road, whereby the trolley-wire may be made to more clearly assume the arc of a circle.

In accordance with my invention my improved pull-off bracket consists, preferably,

to said shoe and provided at one end with a covering of insulating material, and a swivel fitted over the insulated end of the said rod and adapted to turn thereon, the said swivel being adapted to be connected by a rod or wire to a fixed structure located at the side of the road.-

My invention in a pulloff bracket therefore consists, essentially, in the combination, with a support for the trolley-wire, of a .rod connected to the said support and provided with a cap of insulating material, and a swivel fitted upon said cap and adapted to be connected to a post or upright, substantially as will be described.

Figure 1 represents a sufficient portion of a trolley-wire, a post or upright, and a pull-off bracket connected to the trolley-wire and to the post or upright to enable my invention to be understood; Fig. 2,21. top view, partially in section on an enlarged scale, of the pull-off bracket and a portion of the trolley-wire; and Fig. 3, a modification to be referred to.

My improved pull-off bracket consists, preferably, of a metallic shoe a, provided with an upturned flange on its under side to form a groove, into which the trolley-wire a is laid, substantially as shown and described in another application, Serial No. 317,558, filed by me July 15, 1889. The shoe a is provided with a rod or arm a having at its end a cap or covering 65*, of .insulating material, prefer- Serial No. 326,415. (No model.)

ably molded or otherwise fixed upon a threaded shell or sleeve of, adapted to be secured upon the threaded end of the rod a The insulating-cap a is preferably enlarged at its rear end, and has fitted upon it a swivel b, which is preferably connected by a rod 1) with the threaded end of a swivel biconnected, as shown, by a rod 12 to a cap 12 on an upright or post b which in practice is usually located at the side of the road, the rod 19 being shown as threaded at its end and extended through a threaded eye of a lug or ear I) on the cap 12 and secured thereto by a nut 12 The shoe a is made of considerable length to afford a substantially long bearing for the trolley-wire a, so that when the pull-off bracket is tightened up, as by revolving the swivel b on the rod 1), the trolley-wire will be made to more nearly assume the arc of a circle, it being rigidly held in place and prevented from swaying, so that the trolley-wheel carried by the car will be maintained in electrical contact with the trolley-wire as the car travels around the curve.

Instead of making the cap as a shell a provided with the covering a of insulating ma terial, the said cap may be made entirely of insulating material, as shown in Fig. 3.

Referring to Figs. 2 and 3, it willbe noticed that the cap is provided with inclined sides,

as 2, to fit the inclined opening through the end of the swivel I), through which it is ex tended, 'and as a result of this construction it will be seen that when the pull-off bracket is placed under tension, as by turning the swivel b the insulating material is compressedthat is, it is subjected to compression rather than to tension and the said insu- 1. In a pull off bracket, the combination,- 1oo I with a support for the trolley-wire, of a rod connected to the said support and provided 10 opening through which the cap is extended,

said swivel being adapted to be connected to the post or upright, substantially as described. I11 testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM D. MACQUESTEN.

lVitnesses:

JAS. I I. CHURCHILL, E. J. BENNETT.