US431823A - sprague - Google Patents

Description

(No Model.) 3 Sheets-,-Shee t 1 P. J. SPRAGUE.

ELECTRIC RAILWAY MOTOR.

No. 431,823. Patented July 8, 1890.

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' ELECTRIC RAILWAY MOTOR. I No. 431,823. V Patented July 8, 1890.

Q/witnesses v (320010600 SQQM 3511 fitter/na ir UNITED STATES PATENT OFFICE.

F RANK J. SPRAGUE, OF NEW YORK, N. Y., ASSIGNOR TO THE SPRAGUE ELECTRIC RAILWAY AND MOTOR COMPANY, OF SAME PLACE.

ELECTRIC-RAILWAY ,M 0T0 R.

SPECIFICATION forming part of Letters Patent No. 431,823, dated July 8, 1890.

Application filed June 11, 1889. Serial No. 313,874. (No model.)

To all whom it may concern.-

Be it known that I, FRANK J. SPRAGUE, a citizen of the United States, residing at New York city, in' the county and State of New York, have invented a certain new and usefulconstruction of such cars or vehicles designed for propulsion by electric motors.

The object of my invention is generally to provide a secure and convenient attachment and arrangement for one or more motors upon the electrically-propelled car or vehicle in which space will be economized, the motor or motors and the car-bodywill be so independently supported as not to be affected by each others weight and movements, the Weight of the motor or motors will be evenly distributed, the motor or motors will be so supported that they will have the minimum of bodily movement, and the gearing which transmits motion from the motor-sh af ts to the dri ving-axles sh all have a constant effective engagement.

I prefer to make use of my invention in connection with vehicles having verticallymovable axle-boxes, and in carrying my invention into efiect with such vehicles I employ equalizing-bars, which extend on each side of the vehicle from one axle-box to the other, and I join such equalizing-bars by a cross piece or frame which forms the immediate support for one end of the electric motor, the other end being centered on a driving-axle of the vehicle with which the arma ture-shaft of the motor is suitably geared or mechanically connected by a suitable centering support which is independent of the frame formed by the equalizing-bars, whereby the gearing between the armature-shaft and the axle is made to maintain constantly an eifective engagement. The suspension of the motor from the cross piece or frame is preferably a flexible suspension through springs or other flexible supports. When two motors areprovided, I support them both in this way, one being placed before and one behind the said cross piece or frame, and I center each motor upon oneof the driving-axleswith which its armature-shaft is geared or mechanically connected. The body of the car I support upon springs independent of the cross piece or frame which supports the motor or motors, so that the movements of the car-body upon said springs are not communicated to the I motors.

My invention is illustrated in the accompanying drawings, in Whioh- Figure 1 is a top plan view of a truck embodying my invention; Fig. 2, a longitudinal vertical section of the same on the line 2 2 of Fig. 1; Fig. 3, a side elevation of the truck boxes 0 outside the Wheels, and the axle-boxes being vertically movable in the pedestals O. From one axle -box to the other on each side extend the equalizing-bars D, such bars being so attached to or supported upon the axleboxes at their ends as to have a limited play or movement.

0 is a frame carried above the equalizingbars D and connected therewith through the spiral cushioning-springs F F.

E is the spring-board or sand-board which supports the car-springs, and which is hung from longitudinal girders of the frame 0 by stirrups O. The elliptic car-springs Q are mounted upon the said board, and these support the cross-bolster P, which has at its center the pivoting-support for the ear-body, the car-body being thus carried upon the springs Q. In order that the propelling electric motors may be made independent of the said springs which support the car-body and also to secure the other advantages heretofore pointed out as the object of my invention,- I support and arrange said motors in the following way: i v

The motors shown are circular in form, S S being the field-magnet windings and G the armature of each motor. Each motor is centered on the driving-axle at one end of the truck, for the purpose already described, by

means of sleeves e e, and brackets N, extending from one pole-piece to the other, support the armature-shaft of each motor. Upon each end of each armature-shaft is a pinion H, and these pinions engage toothed wheels M on the driving-axles to turn the same.

From one'side of frame 0 to the other there extend two pairs of cross-bars a before and behind the cross-springs Q, but independent of the said springs. These cross-bars support the motors, the motors being flexibly connected therewith. Such flexible support for each motor is by means of a bolt 1) passing through a lug c projecting from the motor, which bolt passes also through a box h, a

supported from the pair of cross-bars a, and within said box h is a spring d, so that through the bolts 7), springs d, cross-bars a, frame 0, and springs 1? the motors are flexibly sup ported from the equalizing-bars, which are connected withthe axle-boxes. r

What I claim is'- 1. A wheeled truck provided With springs for supporting a car-body and carryingan electric motor flexibly supported upon it, said motor being centered upon an axle of the truck with which its armature-shaft is mechanically connected, substantially as set forth.

2. The combination of a wheeled truck, springs on said truck for supporting-acm body, and an electric motor carried by said truck independent of said springs and centered upon an axle of the truck with which its armature-shaft is mechanically connected, substantially as set forth.

3. The combination of a wheeled truck,

springs on said truck for supporting a carbody, and an electric motor flexibly supported by said truck independent of said springs and 40 centered upon an axle of the truck with which its armature-shaft is mechanically connected, substantially as set forth.

4. The combination of a Wheeled truck, springs on said truck for supporting a carbody,'a frame joining the axles of said truck, and an electric motor carried by said frame independent of said springs and having a centering-support independent of the said frame upon an axle of. the truck with which its armature-shaft is mechanically connected, substantially as set forth.

5. The combination of a wheeled truck, springs on said truck for supporting a carbody, a frame joining the axles of said truck, and an electric motor flexibly supported by said frame independent of said springs, and having a centering-support independent of said frame upon an axle of' the truck'with which its armature-shaft is mechanically connected, substantially as set forth.-

6. The combination of -a wheeled truck, a frame yieldingly supported upon the axles of said truck, springs on said truck for supporting a car-body, and an electric motor carried by said frame independent of said springs and having its armature-shaft mechanically connected with one of said axles, substantially as set forth.

This specification signed and witnessed 70 this 10th day of June, 1889.

FRANK J. SPRAGUE.

Witnesses:

WILLIAM PELZER, D. H. DRISOOLL.

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