US424911A - Electric-railway motor - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2.

0. J. VAN DEPOELE. ELECTRIC RAILWAY MOTOR.

No. 424,911. C4, Patented Apr. 1, 1890.

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UNITED STATES PATENT OFFICE.

CHARLES J. VAN DEPOELE, OF LYNN, MASSACHUSETTS.

ELECTRIC- RAILWAY MOTOR.

SPECTCFICATION forming part of Letters Patent No. 424,911, dated April 1, 1890.

Application filed October 25, 1889. Serial No. 328,115. (No model.) I

To all whom it may concern;

Be it known that I, CHARLES J. VAN DE- POELE, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Electric-Railway the class largely used for propelling electricrailway vehicles.

The general characteristics of the type of motor to which my invention particularly relates comprise a self-contained machine, which is sleeved at its rear or yoke end upon the axle to be driven and flexibly supported at its front end, so as to have radial movement with respect to its rear support. The armature-shaft is connected by gearing with the said axle to be driven, and is desirably geared down to such an extent that the employment of a countershaft and gearing becomes necessary. WVhen the counter-shaft is omitted, the matter is simplified and the rear end of the motor can be mounted directly upon the axle to be driven, said axle being provided with a gear-wheel large enough to extend into engagement with a pinion upon the armature-shaft. is necessary, additional supports must be provided, and these have, up to the present time, as far as I am aware, always been formed in side arms secured to the magnetic yoke of the machine. Necessarily a machine so constructed comprises a large number of parts and means for securing them together,

each and all of which, aside from the expense of manufacturing, are liable to become loose and inoperative in use. By my present improvement these ob; ectionable features are entirely eliminated, which object is attained by forming the magnetic yoke, the side arms, and the axle-bearings all in a single integral piece, which would almost without exception be formed by casting, although it might be otherwise produced, if desired. The motorframe so constructed should be of soft iron, and may be annealed, if desired, in order to avoid brittleness and liability to destruction.

The details of construction and arrange- IVhere, however, a counter-shaftment will be hereinafter set forth, and referred to in the appended claims.

In the drawings, Figure 1 is a plan view of an electro-dynamie motor embodying my invention. Fig. 2 is a side elevation thereof, the gearing being indicated in dotted lines. Fig. 3 is an end view in which the field-magnet coils are shown in dotted lines. Figs. 1 and 5 are plan and end views, respectively, of my motor-frame without the field-magnet coils.

In said drawings, A represents the axle to be driven, usually provided at its extremities with the carrying-wheels of a vehicle. B B indicate bearings sleeved upon said axle, said bearings being integral with parts or arms I) 11 extending radially therefrom. The arms 1) Z) sustain at or near their outer extremities the ends of the shaft of the armature O,being also, a driving-gear G, which engages and is driven by a pinion 9 upon the armatureshaft. The motor-frame comprises the side arms I) b, as stated, said arms being formed at their rear extremities into bearings resting upon the axle A. Said bearings are re movable and engage only a part of said axle, substantially as indicated in Fig. 2, being cured in position by removable caps B B whiclntogether with the parts of the bearing integral with the m.otor-frame, should be provided with suitable anti-friction lining. The side arms I) l) are connected by a transverse rear portion or yoke II, with which they are integral.

The motor-frame is preferably composed of soft cast-iron, and is specially designedto sustain the rear ends of the field-magnet cores and to form the magnetic yoke therefor.

I J indicate the field-magnet coils, through which extend the iron cores, one of which dis seen in Fig.1. The cores of the field-magnets I J are secured to and magnetically united by the yokell. Obviously the said cores maybe connected to the yoke II in differentpositions, as endwise, as seen in Figs. d and 5; or they may be let into recesses formed therein, substantially as indicated in Figs. 1, 2, and hen arranged as shown in said Figs. 1, 2, and 3, the rear ends of the field-magnet cores '5 j are let into oppositely-placed recesses in the yoke II and secured thereto by bolts 71 which, for convenience of manufacture, may, if desired, pass entirely through said cores and the intervening portion of the yoke. \Vith this construction the motor-frame will possess great strength and rigidity, and, moreover, since both side arms are connected in permanent relative positions a single set of boring tools may be employed for positioning the bearings therein, thereby insuring greater exactness and permanency. If considered desirable, the yoke H may be re-enforced at the part extending between the cores of the fieldmagnets, either to add structural strength where the same is recessed to receive the cores, as here shown, or to include still greater magnetic conductivity.

Various modifications of the struetu re herein shown may be made consistent with the foregoing description, which includes as its principal features the frame of a geared motor formed in one integral piece. Just how the field-magnet cores are attached to that frame is of minor importance, as is also the character of the bearings employed for the diflierent moving parts.

In Figs. 1, 2, and 3 the field-magnet cores are seen as letinto recessesin the yoke II. In Figs. 4 and 5 the yoke is not formed with recesses and the field-magnet cores are buttended thereto, being secured by screw-bolts O,which pass transversely through the yokes H and enter the field-magnet cores longitudinally.

The field-magnet cores are seen in Figs. 4-

and .5 without the magnetizing-coils indicated in the other figures.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. A frame for an electric motor, comprising side arms and a magnetic yoke uniting the same, the arms and yoke being integral with each other and formed of magnetic material, and field-magnet cores remov-ably secured to and magnetically united by said yoke.

2. A motor-frame comprising side arms having bearings at one of their ends, whereby the same are sleeved upon the axle to be driven, bearings at the opposite ends for the armature-shaft, a magnetic yoke connecting said arms and integral therewith, and field-magnet cores removably secured to and magnetically united by said yoke.

3. A motoratrame comprising side arms having bearings at one of their ends, whereby the same are sleeved upon the axle to be driven, bearings at the opposite ends of the armature-shaft, intermediate bearings for a counter-shaft, and a magnetic yoke connecting said arms and integral therewith, and field-mag net cores removabl y secured to and magnetically united by said yoke.

4. A motor-frame comprising side arms having at their outer ends bearings for the armature-shaft, a magnetic yoke uniting their rear ends and formed integral therewith, and downwardly-opening bearings at said rear ends for sustaining the motor-frame in a radially-11lovable position upon the axle to be driven.

In testimony whereof I hereto af'lix my signature in presence of two witnesses.

CHARLES J. VAN DEPOELE.

\Vitnesses:

J. WEsLEY GIBBoNEY, FRANKLAND JANNUS.

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