US443227A - Andrew l - Google Patents

Description

(No Model.)

A. BIKER. MOUNTING FOR ELEUTRIG MOTORS.

N0. 443,227. Patented Dec. 23,1890, FIG- I we cams ravens co PNDTD LXYHO., wAsumcToN, u. L:

UNITED STATES PATENT FFiCE.

ANDREXV L. BIKER, OF NETV YORK, J. Y.

MOUNTING FOR ELECTRIC MOTORS.

SPECIFICATION forming part of Letters Patent No. 443,227, dated December 23, 1890.

Application filed April 28, 1889. Serial No. 308,292. (No model.)

To all whom it may concern:

Be it known that 1, ANDREW L. BIKER, of New York city, in the county and State of New York, have invented a new and useful Improvement in Mountings for- Electric Motors upon a Car or other Vehicle, which improvement is fully set forth in the following specification.

This invention has reference to the mode of mounting or supporting the propelling electric motor upon a railway-car or other vehicle to be driven by such motor. The motors are usually supported under the carbody between the wheels, one end of the motor-frame resting on the axle. In overcoming the inertia of the car and its load,when starting into motion great strain is put upon the gearing between the car-axle and the armature-shaft, to relieve which it is common to pivot the motor-frame 011 the axle and to support the other end bya stiff spring, thus pro.

viding a flexible connection, which permits the motor as a whole to turn on the car-axle as a center, sufficiently to avoid the danger of breaking some of the parts whenever a start is made. As soon as the inertia which opposes the start is overcome, the strain being relaxed, the motor resumes its normal position.

The present invention has reference to this general plan of supporting the motor; and it consists in novel features of construction and arrangement of the supporting parts, whereby additional security against breakage is obtained, as well as simplicity and economy in construction.

In the accompany ing drawings, which form part of this specification, Figure I is a plan view of a truck having the driving-motors mounted thereon in accordance with my invention. Fig. II is a side view of the same, one of the wheels being removed, and Fig. 111 is an end view.

The drawings show the vehicle provided with two propelling-motors, as is commonly the case. The supporting devices are in all respects duplicates of each other, and therefore it will only be necessary for the purposes of explanation to refer to one motor and its accessory parts. The duplicate parts are indicated by similar letters and figures.

A represents the oar-axle, upon which is sus pended a casting B, herein called the supporting frame or carriage to distinguish it from the frame of the motor proper. It consists of an. end part or base 2, with two parallel side arms 3 and 4. The latter have near the base or end grooves in which fit the axle A, the frame being secured pivotally thereon bystraps 5, The said frame has projecting up from the base an upright portion '7, which is perforated near its upper end. The supporting-rod 0 passes loosely through this perforation. On each side of the upright 7 and surrounding rod 0 is a stiff coiled spring 8 and 9, which bear in opposite directions against the upright 7 and at their other I ends against collars 18 and 19 on rod 0. By

means of these springs the casting B is held normally in a horizontal position, but is capable of tilting in either direction against the resistance of the springs.

D represents the base or yoke of the motor to which the cores of the field magnets E are bolted. The motor is mounted by bolting the base D thereof to theend 2 of casting B by means of bolts 10. The collars 11, in which are the bearings of the armature-shaft 12, rest in grooves near the free end of casting B and are confined by the straps 13. The intermediate shaft 1% has bearings formed by the casting B and straps 15. Motion is transmitted from the pinion b on the armatureshaft to the gear 0 on the intermediate shaft 14, and a pinion d on this shaft 1A turns the gear e on axle A.

The rod 0 extends from end to end of the truck and serves for both the motors. The rod 0 should of course be held rigidly which maybe done in any suitable way. As shown, it passes through the blocks or ribs 9 projecting downwardly from the portion H of the car frame or truck, the rod being held from longitudinal motion by the bolts 6 which are inserted in holes in said rod close to projections g.

The motion of the carriage B and motor on the car-axle as a center, which motion is permitted by the sprin s 8 and 9, (when sufficient force is exerted to overcome them,) is limited by chains 19 20, attached to the bottom of the car, (or it may be to part of the truck if the construction admits of it.) These chains ordinarily are slack and do not support any part IOC of the weight of the motor and its mounting; but in addition to limiting the motion thereof and preventing undue compression of the springs they also serve in case of breakage of the latter to support the motor and prevent it either striking the ground or raising itself into the bottom of the car.

The shape of carriage B admits of its being cast in one piece, and the motor can be made and finished complete before it is mounted. It is then put in place and bolted to the base 2 of the carriage, the intermediate shaft ll slipped between the field-magnets and confined by straps 15, and the gears then put in place.

In starting the car it is obvious that the two motors tend to turn in opposite directionsthat is to say, one raises itself with its mounting while the other moves on its supporting-axle away from the'car-body. If the inertia to be OVGICOIDG is so great that the motion of the motor-carriage exceeds the slack of the chains, (which is but a few inches,) the latter supplement the force of the springs in resisting the motion of the motors. It should be noted, however, that resistance offered by the chain is a yielding resistance, for'the strain upon them tends to compress the ordinary springs by which the car-body is supported. Thus, even if the springs S 9 should break, the chains 19 20 constitute a flexible or yielding support for the motors, utilizing the ordinary car-springs. The construction is such that the resistance opposed to the motors is slight at first, but increases in force with the deflection of the motors from their normal horizontal position.

Having now fully explained my said invention, what I claim is- 1. A mounting for the propelling-motor of a vehicle, comprising in combination a sup porting frame or carriage pivoted on one of the axles, springsbearing on aportion of said frame or carriage and pressing in opposite directions, and chains arranged to limit the motion of said frame or carriage and to sup port the same in case of breakage of said springs, substantially as described.

2. In a mounting for the propelling electric motor of a vehicle, the combination of a carriage consisting of a base or end portion and side arms cast in one piece, said carriage be ing pivoted on the car-axle, a stationary or rigidly-held supportingi'od, and springs surrounding said rod and bearing on opposite sides of a projection of said: carriage, substantially as described.

In combination with the truck of a car or other vehicle, a mounting for the propelling electric motor, saidmounting comprising a carriage having a base or end provided with a projecting plate and side arms, all cast in one piecc,'said arms being grooved for the reception of the axle and the shafts'of the driving-gear, confining-straps for said shaft and axle, a supporting-rod, springs surrounding said rod and holding said carriage in place with yielding pressure, and chains arranged to limit the motion of said carriage on said axle in both directions, substantially as described.

+1. The combination, with the truckof a car or other vehicle, of a motor, a supporting frame or carriage therefor journaled on the car-axle, and safety-chains connecting said frame or carriage with the car-body, substantially as described.

In testimony whereof I have signedthis specification in thepresencc of two subscribing witnesses.

ANDREW L. BIKER. Witnesses:

PHILIP MAURO, CHARLES J. llEDnIcK.

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