US1438423A - Armature - Google Patents

Description

V. G. APPLE.

ARMATURE.

APPLICATION FILED MAY 20, 1918.

1,438,423, Patented Dec. 12, 1922.

Patented Dec. 12, 1922.

UNITED STATES VINCENT G. APPLE, OF DAYTON, OHIO.

ARMATURE.

Application filed May 20, 1918. Serial No. 235,688.

To all whom it may concern:

Be it known that I, Vnzonxr G. lrriir, a citizen 0.. the United re. g t Dayton, in the county of Montgomery and State Ohio, have invented certain new and useful 1111131'0". cments in Armatures, of which the following is a specification.

One of the objects of my invention is to provide a cw and useful means of making armaturcs. whereby to reduce the number of parts requ rod; to render the structure more stable 5. efficient and to generally improve and accelerate the mode of construction.

Another and more specific object of my in- 15 volit on to provide an improved means of r aclr. commutator segments to the paired teimin of the armature conductors,

i ihereby the inner and outer circumferentirl surfaces of the commutator may be used.

y or jointly, for contact with colbrushes, thus providing acommutator having a greater capacity and a larger range of usefulness than when one surface only is available for the purpose.

Other, further and more specific objects of my invention will become readily apparent, to persons skilled in the art, from a consideration of the following description when taken in conjunction with the drawings, wherein Fig. 1 shows a section of an armature with a commutator section being welded thereto.

Fig. 2 shows a view in direction of the arrows of line 2-2 of Fig. 1.

Fig. 3 is a similar view showing the collecting brushes applied on the outer and the inner surface of the commutator so constructed.

In all the views the same reference charactors are employed to indicate similar parts.

In the selected embodiment 5 is a spider for supporting the core 6 of an armature. The conductors 7 and 8, having their ends welded together at 9, pass thru perforations or slots in the outer periphery of the core. 10 is a shaft upon which the spider 5 temporarily is mounted, being prevented from axial movement by a cap screw 11 which enters the shaft and which engages the hub 12 of the spider. A disc 13, preferably of metal, slidingly fits an insulating sleeve 14 that is placed over the shaft 10, and is the means for concentrically spacing and temporarily supporting the armature terminals 9, in concentric alignment. A lateral projection 15, of the disc 13,

supports a commutator segment uide comprising an insulating ring 16. This ring is provided with radially disposed spaced-apart plates 17, to lie between the commutator sections 18 and for properly spacingthe commutator sections apart in the process of welding them to the ends of the terminal 9, of the armature conductorsv A. disc 19 of insulating material prevents contact of the metal disc 13 with any of the metallic part of the armature structure except the conductors or terminals 9 at the inner surface thereof. A ring 20 overlies the outer surface of the terminals 9, and clamps them tightly to the outer peripheral surface of the disc 13, so as to bring them all into concentric arrange ment, or alignment with the shaft 10, and to make electrical connection between the terminals and the ring 20. The disc 13 is electrically connected with the ring 20, by a wire 21. The diameter of the ring 20 is capable of being contracted by the perforate racially projecting ears 22, thru which the bolt 24 passes and over which is threaded a series of nuts 25. Another wire 26 communicates with a suitable source of electric current, not shown, for conducting the current to the armature and commutator terminals for the purpose of welding the re spective members together.

An axially movable arm 27 comprising a part of the hub 28. is slidable upon the sleeve 14, being resiliently moved toward the armature by a relatively strong spring 29. A handle 30 is employed for moving the arm in the opposite direction, against the effect of the yielding spring. The inner upper face of the arm 27 is provided with a contact shoe 31 for engagement with the ends of each of the commutator segments 18, when brought into connection therewith, for the purpose of welding the segments, or sections, to the terminals 9 of the armature conductors. A wire 32 leads to the same source of current as the wire 26 for conducting the current to the welding apparatus.

The insulating ring 16 is provided with as many radially extended pockets as there are commutator segments 18. These pockets are contained between adjacent separating plates 17 After the armature ends 9 have been arranged in proper concentric relation with their end faces in a vertical plane perpendicular to the axis, the segments 18, are one at a time, placed in the pockets between to slip back over the ends oi the disc 13 and its sides between theinner and cute the commutator. I have also shown a brush VIN CENT G. APPLE.

the separators 17, and the shoe 31 of the arm holder 36 carrying a brush. and spring 30 27 is brought into contact with the outer pressed by spring; 38 and bearing upon the surface of the commutator segment 18. inner surface of the cor tater: Either set The tension of the spring 29 will produce of brushes may be noon in connection with 1 sufiicient pressure to move the arm 27 in the commutator or both may he used one wardly, thereby pressing the inner surface on the outer surface ot the commutator and i of. the commutator section into contact With one set on the inner surface oi the commutathe surface of the respective pairs of termitor, in order to increase the current carrying; nals, as they are ioined together at 9, therecapacity of the commutator.

by causing a Weld. After a Weld between Having described my invention, \VllLt one commutator segment and its paired terclaim 1s: 40

minals has been completed, the arm 27 lit combination with an if" moved back and slightly rotated and another a series of paired conductors are segment 'is placed in a pocket between the the end ot the core. the separators 17 and the process repeated until conductors terminating in the entire number of segments have thus same diametric plane; a di been butt-Welded to the ends of the terminals ring having a collect in I iece outs and 9. After this has been accomplished the inside of the ring, each cylindrical surface armature may b removed from the Welding to receive collecting; brushes, the bein a apparatus, the ring 20 having been loosened segment of the ring for each pair of con-- permits the commutator and thc'terminals 9 ductcrs. and each segment joined at one or". 50

iular carries the ring 20 With it, after which surfaces to a pair of conductors to render the ring may be removed from the finished both said annular r.:urtaci. available tor commutator. commutating; purposes.

In Fig. 3 I have shown a brush holder 33 in testimony whereof hereunto set my 55 carrying a brush 34E, spring pressed by hand. spring 35 and engaging the outer surface of dec commutator 4

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