US823568A - Cummutator. - Google Patents

Description

No. 823,568. l PATENTED JUNE 19, 1966. W. L. WATERS.

GOMMUTATOR.

APPLIOATION FILED DEO. 5. 1904.

nl William L Warers M/w :El @MW NITED STATES WILLIAM L. VATERS, OE MILWAUKEE, WISCONSIN.

COMMUTATOR.

Specification of Letters Patent.

Patented June 19, 1906.

Application led December 5, 1904. Serial No. 235,462.

To a/ZZ whom, t may concern: l

Be it known that I, WILLIAM L. WATERS, a subject of the King of England, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement in Commutators, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this speciiication.

My invention relates to commutatore, and particularly to commutatore with which a plurality of brushes are employed; and the object of my invention is improved construction of the commutator and its arrangement with respect to the armature.

To accommodate a great numb er of brushes, the commutator must offer considerable surface; but if the commutator is integral it becomes very unsatisfactory on account of the heating which results, it being impossible to provide satisfactory ventilation to keep the segments cool. My invention, therefore, provides for a divided commutator or, infact, two commutatore which may be of exactly similar construction and one disposed at either side of the armature. The segments of one of the commutatore only is connected in the usual manner with the armature-coils, while corresponding segments of both commutatore are connected together by leads which may pass through the interior of the armature or through the axial Ventilatingepacings ordinarily employed. Each commutator is well provided with Ventilatingopeninge, and the currents generated by the armature upon rotation pass outwardly through the commutator-Ventilating channels and also cross the surface of the commutator-bars, and thus the commutator ie ke t cool` I also provide a very simple and e cient arrangement of the commutatore with respect to the armature, the armature and commutatore beingl all mounted on a common sleeve which is keyed to the armatureshaft.

My invention will be best understood with reference to the accompanying drawings, in which- Eigure 1 is an end view of the armature and commutatore, and Fig. 2 is a longitudinal sectional view taken on line 2 2 of Fig. 1.

Each commutator part consists of a eupporting-frame in the shape of a pulley l, whose rim 2 and hub 3 are connected by spokes 4. A clamping-ring 5 engages each side of the pulley, being provided with an annular groove 6 for engaging the edge of the pulley. The clamping-ringe are provided with openings 7, through which bolts 8 pase for clamping the rings against the pulley and for clamping the commutator-segments 9 about the periphery of the pulley. The armature 10 consists of end platee 11, between which are clamped the armature-laminations 12 by means of clamping-bolts 13. A sleeve 14 is secured to the shaft 15 by a key 16 and ie provided with shoulders 17 and shoulders 18. The end plates of the armature are clamped to the s houlder 17, while the hubs 3 of the commutatore are clamped against the shoulders 18, and thus the armature and commutatore are rigidly connected together. The armature end plates may consist of a hub and spokes, or, as shown, these end platee may be provided with Ventilatingopenings 19, which lead into the chamber 2() between the end plates and laminations. The armature-coils 21 may be arranged in any manner in the armature-teeth and their terminals 22 connected with appropriate segments of one of the commutatore. The corresponding segments of the commutatore are connected by means of conductors 23, which pase through the Ventilating-openings 19, and thus sufficient surface may be provided for the brushes 24, which may be of any number.

As the armature and commutatore are rotated sufiicient air-currents will be generated and will be forced through the ventilating-openings of the armature and through the channels 25 between the spokes and rings of the commutatore and also over the surface of the commutator-segmente tokeep the commutatore and armature well cooled.

I do not wish to be limited to the exact construction and arrangement herein shown and described, as changes may readily be made without departing from the spirit of invention; but

I claim as new and desire to secure by Letters Patent- 1. The combination with an armature, of a commutator arranged at each side thereof and adapted to rotate therewith, the segments of one commutator being suitably connected with the coils of the armature, the segments of the other commutator having no direct connection with the coils, Ventilatingpassages through the interior of the armature, and conductors passing through said IOO IIO

ventilating-passages and connecting with the segments of the commutatore for affording an electrical path between the corresponding segments of the commutatore.

2. The combination with an armature, of a commutator arranged at each eide thereof, said commutatore being of similar construction, a supporting-rim for each commutator for supporting the segments thereof, clamping-rings engaging the edges of said rim and said segments, a hub for each commutator, spokes connecting said rim with said hub to form passage ways through each commutator, the segments of one commutator being suitably connected with the coils of the armature, the segments of the other commutator having no direct connection with the coils, ventilating passage-ways through the core of the armature, and conductors passing through said passage-ways and connecting corresponding segments of the commutatore.

3. The combination with an armature, of a commutator associated with each end there of, a sleeve provided with two sets of shoulders, the end plates of said armature engaging said sleeve against one set of shoulders, said commutatore being mounted on said sleeve, and each engaging one of the other shoulders, the segments of one commutator being suitably connected with the coils ofthe armature, and conductors for joining correponding segments of the commutatore.

4. The combination with an armature, of two commutatore, one disposed at each side thereof, a sleeve, sets of shoulders on said sleeve, the end plates for said armature engaging said sleeve and oneeet of said shoulders, commutatore being mounted on said sleeve, and each engaging one of the other shoulders, ventilating passage-ways extending through said armature and through said commutatore, the segments of -said commutatore being suitably connected with each other and with the armature-coils.

5. The combination with an armature, of a commutator disposed at each end thereof, a sleeve provided with two sets of shoulders, the end plates of said armature engaging said sleeve and one set of shoulders, said commutatore being also mounted on said sleeve and each engaging one of the other shoulders, ventilating passage-ways extending through said armature and through said commutatore, the segments of one commutator being suitably connected with the coils of the armature, the segments of the other commutator having no direct connection with the coils, and conductors passing through the ventilating passage-ways of the armature for connecting corresponding segments ofthe commutatore,

6. The combination with an armature, of a commutator disposed at each side thereof, a sleeve upon which said armature and said commutatore are rigidly mounted, a supporting-rim for the segments of each commutator, clamping-rings for securing the segments of each commutator to the corresponding supporting-rim, a hub for each commutator, spokes extending from the rim to the hub to form ventilating passage-ways, ventilating passage-ways through the armature, conductors passing through said armature passageways for suitably connecting together corresp onding commutator-segments, the segments of one of said commutatore being suitably connected with the armature-coils.

7. The combination with an armature, of a commutator disposed at each side thereof,

' a sleeve provided with two sets of shoulders,

the end plates of the armature engaging said sleeve and one set of shoulders, hub portions of the commutatore mounted on said sleeve and engaging the other shoulders, asupporting-rim for each commutator, spokes for connecting each supporting-rim with the corresponding hub, clamping-rings for securing the commutator-segments to the rim, said clamping-rings and spokes forming passage-ways through the commutatore, ventilating passage-ways through the armature, and conductors passing through said armature paesage-ways for connecting together corresponding segments of the commutatore, the segments of one of said commutatore being suit ably connected with the armature-coils.

ln witness whereof I hereunto subscribe my name this 1st day of December, A. D.

WILLIAM L. WATERS. Vitnesses:

JOHN E. HUBEL, W. S. MAY.

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