US516784A - Philip wtjest - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. P. WUEST, Jr. ELECTRIC MOTOR No. 516,784.. Patented Mar. 20, 1894.

2 Sheets-Sheet 2. ST, Jr.

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Patented Mar. 20, 1894.

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UNITED STATES PATENT OFFIC PHILIP WUEST, JR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHRISTOPHER J. HEPPE AND FLORENCE J. IIEPPE, OF SAME PLACE.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 516,784, dated March 20, 1894.

Application fil May 16, 1892. Serial No. 433,148. (No model.)

To whom it may concern:

Be it known that I, PHILIP lVUEsT, J11, a citizen of theUnited States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Electric Motors, of which the following is a specification.

The object of my invention is to cheaply construct an electric motor, which will be compact and at the same time eitective, my invention being especially designed for small motors, for running light machinery, fans, &c., but the motor may be made in different sizes without departing from my invention.

In the accompanying drawings: Figure 1 is a perspective view of my improved motor. Fig. 2 is an end view. Fig. 3 is a sectional plan View on the line 12, Fig. 2. Fig. 4 is a transverse sectional view on the line 3-4., Fig. 3. Fig. 5 is a perspective view of the frame; and G is a sectional view of adetail of my invention.

A is the frame of the motor, and this frame consists of the electro magnet, A, and pole pieces A which project from the heads 0. the core a and pole pieces being cast in a single piece, as shown in Fig. 5. The bobbin can be wound by simply placing it in a lathe and winding the wire it upon the core a, for since the pole pieces A are not connected at the top, they allow the wire to be readily wrapped upon the spool. I prefer, however, when the motor is finally constructed to mount a plate 0. of brass or other suitable material, to brace the pole pieces. On one side of the frame is a bracket A which is either slotted or provided with holes, and by which the motor may be secured to a shelf or any permanent projecting portion.

B is the armature, having a core Z), on which is a series of projections or cogs, and between the projections the armature wires are wrapped, as clearly shown in Figs. 8 and t. On the armature shaft is the commutator B the segments of which have lugs Z), to which the wires of the armature are secured. The wires are brazed in the present instance to the lugs, but may be secured thereto in any of the ordinary ways.

Passing through an opening in each pole piece A is a stud d, these studs being secured in the pole pieces by set screws (2. The studs are screw threaded at both ends and adapted to these screw threaded portions are nuts (1 which confine the bearings D D to the studs. On each stud are sleeves (Z (Z which prevent the studs moving longitudinally, so that the bearings are locked in the proper position in relation to the pole pieces, but this portion of the device is so arranged that by simply unscrewing the nuts at one side of the frame and removing one bearing the armature can be readily removed for repair and placed again in position without altering the relations of the several parts, and both bearings can be readily removed, when necessary, the set screws d locking the studs to the frame. Projecting from one side of each pole piece is a stud F which carries the commutator brush fFigs. 2 and 6. On the stud F is a sleeve f of non conducting material which passes through the brush holder F, upon which is mounted the brush f. Between this brush holder f" and the pole piece A is a second sleeve of non-conducting material f and between the nut f and the brush holder is a washer f of non-conducting material, so that the brush holder is insulated entirely from the pole pieces, and the parts are so constructed that sufficient friction can be applied to the nut f that while the brush holder can be turned upon the stud, it will, however, remain where put, and the wear can be readily taken up by tightening the nut.

The brush is secured to the holder in the present instance by a set screw, but other means of fastening may be used it found necessary. By having one brush holder-supporting stud above the central line, and one below the central line, as shown in Fig. 2, the brushes can be arranged one on one side of the commutator and the otheron the opposite side of the same, and these brushes can be thrown out of engagement with the commutator by simply turning their holders, as described above. Another feature is that when these brushes are turned away from the commutator, the commutator, when one bearing is removed, can be readily withdrawn from the machine.

On one side of the frame is a plate M of nonconducting material upon which are mounted the two plates m 911 each provided with binding posts 11 n to which the line wires are secured. The plate m is connected to the bobbin wire a, while the plate m is connected to a wire 11 attached to vone of the brush hold ers, the other brush holder being connected to the opposite end of the wire a as clearly shown in Fig. 1, thus completing the circuit.

Byconstructing the motor as above described I not only obtain excellent results as regard running and power, but the arrangement enables me to cheaply manufacture the motor and so arrange the parts that they can be readily put together, and the parts can be detached when repairs are necessary.

By making the core heads and pole pieces in a single casting Idispense with the necessity of truing up the faces so as to obtain perfect union and the parts cannot possibly get out of line, and this construction affords an excellent framework upon which the, several parts of the motor are supported.

I claim, as my invention- 1 In an electric. motor, the combination of the pole pieces, the armature, studs, projectingfrom each side of thepole pieces carrying removable bearings for the armature shaft, and studs projecting from said pole pieces,

diagonally above and below the axis of the armature shaft, with brushes pivotally mounted upon said latter studs, whereby the armature may be quickly removed or replaced from either side of the motor, substantially as described.

2. The combination of the pole pieces, the armature, its shaft, bearing for said shaft, the commutator, the brushes, studs passing through the poles and secured therein by set I the field magnets, substantially as, set. forth,

In testimony whereof I have signed my name to this specification in the. presence. of

: two subscribing witnesses.

PHILIP VVUEST', JR.

Witnesses:

WILLIAM D. CONNER, HENRY HoWsoN,

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