US378475A - stephenson - Google Patents

Description

(NdModeL) 2 Sheets-Sheet 1.

J.'STEPHENSON.

IRAM GAR DOOR OPERATOR. No. 378,475. Patented Feb. 28,1888.

" iii.

nu i (No Model.) 2 Sheets-Sheet 2.

J. STEPHENSON.

TEAM GAR DOOR OPERATOR. No. 378,475. Patented Feb. 28, 1888.

UNITED STATES JOHN STEPHENSON,

PATENT OFFICE.

OF NEV YOItK, N. Y.

"* TRAM-CAR==DOOR UPERATDR.

SPECIFICATION forming part of Letters Patent No. 378,475, dated February 28, 1888.

Application filed June 17, 1887. Serial No. 241,637.

To aZZ whom it may concern:

Be itknown that 1, JOHN STEPHENSON, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Tram- Oar-Door Operators, of which the following is a specification.

The present invention relates to improved means for opening, closing, and controlling the position of tram-car doors from a distant point; and it consists in the novel construe tion hereinafter fully set forth.

In the drawings so much of a tranrcar is illustrated as is necessary to a ready understanding of the improvement, in which drawingtv Figure l is a vertical central section of the two ends of a tram-car, illustrating the dooroperating means. Fig. 2 is a front elevation of a portion of the tram car; and Fig. 3 is a cross-sectional elevation taken on the line m, Fig. 1, looking from the interior of the car.

The larger number of tramways in the United States use small cars moved mostly by one horse and managed by one attendant. Many devices have been tried to enable the driver to control the entrance-door and open and close it at pleasure, and have it remain where placed, and be convenient for driver or passengers to move. All these desirable fea tures are combined in my invention, viz: I place below thedoor-top a rail, 20, extending from the door standing pillar to the corner- .pillar C of the body. On the rail is a slide,2l, connected with a slotted frame, F, fastened to the door-edge D. In the slot of the frame is a sliding block, 5, in which is a crank-pin, 4, held by the outer end of an arm or lever, G, having its shoulder 10 joined to the rock-shaft H, which passes through the car and its front walls, I, where,by a flexible joint, 12, it unites with an extension, J, of the rock-shaft, dropping to its connection 13 with the bonnet-rim K, at which place it receives the drivers han dle L, having a counter-weight, M, for oper- (No model.)

ating and holding the door open or shut as placed.

The slide 21, herein referred to and particularly set forth in a companion application, is not an equivalent for a doorsheave, because extremely high car-window sashes force the door-carrying rail so near the roof that asheave cannot be used, and also because the necessary boxing or indenting the door-sheave into the corner-pillar at that elevation would destroy the angle framework of the car-body.

I claim 1. A tram-car having a sliding door at one end of the car adapted to be operated by the driver at the other end,a rock-shaft connected to the door and extending to the forward part of the car-,a handle connected to the rock-shaft for operating it, and a weighted counter-balance, also connected to the roclcshaft, whereby the door may be operated by the driver and held open or shut by the counter-balance, substantially as described.

2. In a tI2tlIl'C2Ll,hhG combination of its door, an inclined section of a rockshaft supported over the platform and having its outer end supported by the car-bonnet,ahaudle secured to said rock-shaft and having a loaded or weighted extension to balance and hold the door open or closed when so placed, a second or main section of rock shaft extending between the inclined section,and the door united to the said section by a flexible joint, an arm secured to the end of the main section of rockshaft adapted to move between the end carwall and its partition, and a slotted frame se cured to the rear of the door engaged by a pin on said arm, .all substantially as and for the purpose described.

Intestimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

' JOIIN STEPHENSON.

\Vituesses:

J os. B. Srnrnnnsou, S. A. STEPHENSON.

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