US636189A - Trolley-pole. - Google Patents

Description

UNITED STATES P TENT firm,

SILAS VERNOY, OF TORONTO, CANADA.

TROLLEY-POLE.

SPECIFICATION .forming part of Letters Patent No. 636,189, dated October 31, 1899.

Application filed January 20, 1899. Serial No. 702,784. (No model.) i

To all whom it may concern.-

Be it known that I, SILAS VERNOY, of Toronto, in the Province of Ontario and Domin ion of Canada, have invented a new and Improved Trolley-Pole, of which the following is a full, clear, and exact description.

This invention relates to trolley=poles and attachments thereto for double wire electriccar systems; and the object is to provide a device of this character that may be readily applied to cars employing the present devices at a comparatively small cost, as well as to new cars.

I will describe a trolley-pole and its attach= ments embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a partial section and a partial side elevation of a trolley-pole and attachments embodying my invention. Fig. 2 is a section on the line 2 2 of Fig. 1. sectional view of the upper portion of the pole, and Fig. 4 is an inner face view of the turntable portions employed.

-Referring to the drawings, 1 designates a tubular trolley-pole, of the usual material, having a cross-head 2 at its lower end, provided with trunnions 3, having bearings in uprights 4, attached to a base-plate'o. The trolleys carried by the pole are held in yielding engagement with the wires by means of springs 6, which surround the cross-head 2 and have one end connected to said crosshead and the other ends connected to the uprights.

Attached to the upper end of the pole 1 is a coupling 7, having divergent tubular members 8,-into which the lower ends of the tubes 9 are engaged. These tubes 9 are engaged at the upper end With couplings 10, with which the shanks 11 of the blocks 12 engage. These shanks and the blocks are insulated from the coupling-stem, as plainly shown in Fig. 3.

Fig. 3 is a.

the parts 8, 9, and 10 may be considered as a single arm, the two arms of course divergent, as shown.

Secured to the under side of the base 5 is a ring 17, of insulating materialsuch, for in stance, as indurated fiber. Seated in this ring at diametrically opposite points are segmental contact-plates 18. The ring 17 is designed to turn upon a ring 19, of insulating material, secured to the roof 20 of the car in any suitable manner, and in this ring 19 are seated segmental contact-plates 21, adapted to be engaged by the contact-plates 18. The conductor 22 has electrical connection with the trolley 13 and extends downward through the pole and through an opening in the cross head 2 to connection with one of the contactplates 18, and a conductor 23 provides connections between the trolley l t'and the other contact-plate 18.

From the contact-plates 21 wires 24 and 25 extend to a connection with the motor of a car or to wires in the roof having connection with the motor. A king bolt 26 extends through the base-plate 5 and also through the roof or platform of the car and is suitably insulated from both.

The contact- plates 18 and 21 being quite long, the pole is well adapted for preserving the electrical connections while a car is going around curves and when the pole is laterally deflected to a considerable extent relatively to the car. In other words, from this construction it is evident that independent connections are maintained at all times between the trolleys and the wires 24 25, leading to the motor, no matter on how sharp or how long a curve the car may be running. In ordinary trolley systems in which the rail or track is used for the return-current trouble is caused by the leakage of the currentfrom the rails, which results in the destruction by electrolysis of neighboring water and gas pipes and the steel foundations of large buildings and also causing a great loss to the railway company by the leakage of electricity through the ground. As I employ a separate wire for the incoming current and a separate wire for the outgoing current no difliculty of this kind will be experienced.

Parts of my invention may be changed in form and proportion without departing from 2. A trolley-pole and connections for a double-wire overhead electric-car-line system, comprising a tubular pole, a coupling 0n the upper end of said pole and having divergent tubular members, tubes connected in said members, couplings engaging the upper ends of said tubes, trolley-blocks supported in said last named couplings but insulated therefrom, and trolleys mounted in the blocks, substantially as specified.

SILAS VERNOY.

Witnesses:

JOHN G. RIDOUT, A. J. COLBOURNE.

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