US466807A

US466807A - Electric trolley

Info

Publication number: US466807A
Authority: US
Publication date: 1892-01-12
Anticipated expiration: 1909-01-12

Description

L LI.- e e h. S. s .Tu e e h s 2 L YF R L RM HT Sm .m AU .u EE, m. d 0 M 0 N|\,

No. 466,807. rPatented Jan. 12-4, 1892.

UNITED STATES PATENT OFFICE.

ELMER A. SPERRY, OF CHICAGO, ILLINOIS.

ELECTRICl TROLLEY.

SPECIFICATION forming part of Letters Patent No. d66,807,' dated January 12, 1892.'.

' Application led June 24, 1891. Serial No. 397,299. (No model.)

To @ZZ whom t may concern.'

Beit known that I, ELMEE A. SPEEEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and` useful Improvement in Electric Trolleys, of which the following is a full, clear, and exact speciiicaion. i

My invention relates to trolleysfor electric, street, or other cars; and it consists in certain details of construction of the erecting-spring for the trolley and devices for controlling the rotation of the trolley and trolley-pole.

Figure l shows a sectional view of the erecting-spring and device for rotating the trolleypole. Fig. 2 shows a detached view of portion of same. Fig. 3 shows side elevation of car with trolley-pole attached and also the relation of the retractor.

Like letters of reference indicate similar parts through the several views.

'A base A, having a center at A', is secured to the car. Arranged upon this base is a clamp I3 with cap B', which are secured together by bolts B. This clamp may be solidly secured to the base or pivotally arranged thereon. The same is shown in Figs. l and 2. Interior to the clamp and integral therewith is a flattened tongue C. The clamp B serves to secure in an adjustable relation a spring C', into the other end of which is fastened a sleeve C. Loosely fitting this sleeve is a second sleeve D, into which is secured the trolley-pole D', carrying the trolley D, which may be of the usual construction. The interior rotating sleeve D is provided with a plug E, secured thereto, flattened at its end, which is grasped by links F and G. The pin G serves to secure the links to the plug E. These links. are held together by bolts G, running through thimbles, which separat-e the same, so as to pass loosely over the tongue C.

The use and operation of my invention are as follows: In using a coiled erecting-spring such as is shown I have found that when it is bent in opposite directions in the same plane the ilexure vtends to Irotate the trolley in such a manner as to interferewith its operation in connection with the trolley-Wire. This I overcome in two ways: first, by allowing the clamp in which the spring is supported to rotate and also by means causing the spring to dex in a single plane only. In the drawings I have illustrated still a further method of getting rid of any extra strains which might exist, which consists in providing a separate rotating piece controlled by the links F and G, into which piece the trolley-pole is inserted. It will readily be seen by Fig. 2 that the ilexure can take place only in the single plane, as shown in Fig. l. The adj ustability of the spring in the clamp B is to compensate for different hefts of trolley and fixtures. In the case of alight trolley the spring should be pulled out, so that less convolutions are included in the clamp and more utilized in the tlexure.

It will readily be understood that other means for retaining the alignment of the trolley with the car or preventing the rotative effect of a coiled erecting-spring interfering with the alignment of the trolley may be used without interfering with the spirit of the invention, and details of the retracting device can be greatly Varied without departing from the invention.

It must be seen that the spring is arranged to flex with the movement of the trolley-pole and contains mechanism for controlling the flexure of the spring within a single plane. It will readily be understood that this arrangement will operate with or without the swivel at the base and top of the spring. The one at the base is to facilitate changing the trolley upon changerof the direction in movement of the car, and the swivel at the top is to still further prevent the variations in rotative effect of the spring due to flexure interfering with the alignment of the trolley, as fully explained herein.

Although it is designed to use all these features in connection with one another, yet it is obvious that one or more of them may be used without the others, and the invention extends to suchuse.

What I claim as new, and desire to secure by Letters Patent, is-

I. In an electric trolley, an upright flexing coiled erecting-spring and a trolley supported thereby, with a swivel-joint connection between the trolley and the spring,'combined with a connection of the trolley independent IOO of the spring for preventing or controlling' the rotation of the trolley with reference to the spring.

2. An upright flexing trolley erecting-spring, a trolley supported by one end of the spring, in combination with a horizontally-swiveling base fastened to the other end of the spring.

3. In an electric trolley, an upright flexing coiled erecting-spring, a trolley directed thereby, a base, and means whereby the spring may be secured to the base at Varying heights therein.

4. A comparatively short upright coiled iiexing erecting-spring, a pole and trolley supported at its upper end, and means whereby the spring is prevented from flexing in but a single plane, in combination With a swiveling base for the spring attached to its lower end.

5. An upright coiled liexingtrolleyerectingspringe, trolley supported'by one end, and a swiveling support for the other end of the spring, in combination with mechanism for confining the ileXure of the spring to a single plane.

6. In an upright coiled flexing erectingspring, a trolley-pole supported by one end, a head fixed to the other end of the spring, and a support upon which the head rests by means of a swveling joint, in combination with mechanism att-ached to the head, adapted to confine the lexure of the spring Within asingle plane with reference to the head, while the Whole is allowed to move upon the swivel independent ot' the lexure of the spring.

ELMER A. SPERRY.

Witnesses:

P. J. MULDooN, M. NIELsoN.