US781359A - Trolley. - Google Patents

Description

PATENTBD'JAN. 3l, 1905.

L-CLPULLBN,

A TROLLEY.

PYLIOATIQN FILED MARze, 1904 7 D N -we SN i www Snowdon www oom l lUNITED STATES LEONARD O. PULLEN, OF AUGUSTA, MAINE, ASSIGNOR OF ONE-HALF THOMAS J. LYNCH, OF AUGUSTA, MAINE.v

Patented January 31, 1905.

TROLLEY.

SIECIFICTION forming part of Letters Patent No. 781,359, dated January 31, 1905.

V Application led March 26, 1904. Serial No. 200,159.

T @ZZ 'Lu/wm' t may concern,.-

Be it known that I, LEONARD O. PULLEN, a citizen of the United States, residing at Augusta, in the county of Kennebecand State of Maine, have invented certain new and useful Improvements in Trolleys, of which the following is a specification.

My invention relates to trolleyrpoles and stands for electric cars, and has for its object I04 the provision of means for catching the trolley-pole should the wheel leave the wire or should the rope that holds it in an inoperative position break. In the trolleys as at present constructed when the wheel leaves the wire they fly upward, endangering the guy-wires, &c.', until the car is stopped; and my invention is intended to prevent the pole flying up in such emergencies, so that the overhead .structures are vnot damaged and the necessity for stoppingthecar averted. l

. The construction 'and advantages of my invention will fully appear hereinafter and by reference to the accompanying drawing, which shows a trolley stand and pole, partly in section, constructed in accordance with my invention.

. 1 represents asuitable base-plate secured to the roof ofthe car and having a circular groove 2 formed therein, in which rest antifrictio'n rollers or balls 3.

-4 represents the base of the trolley-stand, which is revolubly mounted on base-plate 1 by means of bolt 5, which is placed in the center of circular'groove 2.

6 represents the pole-support, secured to base 4, on which is pvotally mounted, by rmeans of bolt 7 the pole-socket 8, made kof two parts held together by bolts or screws, so as to admit of their being readily dismembered.

9 represents a segmental ratchet formed on the top and rear of support 6, and 10 a pawl slidably mounted in socket 11, formed by making a channel in each of the two parts of polesocket 8. f

12 represents a spring to actuatepawl 10, mounted on reduced portion 13 of the pawl and'bearing between a shoulder 14 on one of the parts of the socket and a nut 15, mounted on screw-threads 16` on said reduced portion 13, the purpose of nut 15V being to permit the tension of spring 12 to beregulated as desired. 17 represents the"trolley-pole, adapted to seat in socket 8 and held therein by means of straps 18, secured to each part of said socket and held together by means ofbolts 19.

' 2O represents the trolley-head, pivoted in the other end of the trolley-pole, having a trolleywheel 21 journaled in its outer end, and 22 the rope foroperating the pole. The pole is made s'de of the socket.

The front of support 6 is extended, as shown at 27, and has slidably mounted thereon a block 28.

29 represents springs secured to block 28, and having their free ends secured to curved blocks 30, secured to the sides of socket 8. The tension of .springs 29 is adjustable by means of a screw-rod 31, journaled in the shoulder 32 on the extended end 27 of support 6 and having its screw-threaded portion intermemberi-ng with a screw-threaded bore in'said block.

In ope-ration the trolley-pole may be ad- 12, and as the tension 0f springs 29 is greater than that of spring 12 the trolley-head when in position against the line-wire will be de- --justed by means'of rope 22, a slight pull being V.necessary to overcome the tension of. spring Vention may be used to hold the trolley-pole in an inoperative position b y pulling the pole down and suddenly letting go of the rope.

Having thus described my invention, what I claim is- 1. In a trolley, a trolley-Stand having a segmental ratchet, a pole-socket pivotally mounted on said stand, a pawl slidably mounted in said socket, a spring to vactuate said pawl, means to regulate the tension of said spring, the pole secured in said socket, the trolleyhead pivotally mounted on the free end of said pole, and means to connect said pawl and head, substantially as shown and described.

2. In a trolley, a trolley-stand having a segmental ratchet, a pole-socket pivotally mounted on said stand, a pawl slidably mounted in said socket having a reduced portion, screwthreads on said reduced portion, a nut engaging said screw-threads, a spring mounted on said reduced portion and bearing between said nut and shoulder on the socket, the pole secured in the socket, the trolley-head pivotally mounted on the free end of the trolley-pole, and means to connect said pawl and head, substantially as shown and described.

3. In a trolley, a trolley-stand having a segmental ratchet, a pole-socket pivotally mounted on said stand, a paw] slidably mounted in said socket having a reduced portion and provided with a bore, a spring' to actuatc said pawl, means to regulate the tension of said spring, the pole secured in said socket, the trolley-head pivotally mounted on the free end of said pole, and a rod secured to said trolleyhead and in the bore of said pawl, substantially as shown and described.

A. In a trolley, a trolley-stand having a segmental ratchet, a pole-socket pivotall y mounted on said stand, a pawl slidably mounted in said socket havinga reduced portion and provided with a bore, screw-threads on said reduced portion, a nut engaging' said screwthreads, a spring mounted on said reduced portion and bearing between said nut and a shoulder on the socket, a tubular pole secured in the socket, the trolley-head pivotally secured in the free end of the pole, arod pivotally secured to the trolley-head and adapted to be inserted in the bore in the pawl, and a set-screw to hold the rod in said pawl, substantially as shown and described.

In testimony whereofI l hereto ailix my signature in the presence of two witnesses.

LEONARD O. IULLEN.

Witnesses:

A. M. GODDARD, ANNIE WINTER.

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