US294180A - Begulator foe dynamo electric machines - Google Patents

Description

(No Model.)

0. B. BALL. REGULATOR FOR DYNAMO ELECTRIC MAGHINES; NO. 294,180. Patented Feb. 26, 1884.

zszflail WITNESSES: INVENTOR Nv PETERS. Plvula-Lxlhcgraphcr. Washmgwn. D. c.

UNITED STATEs CHARLES E. BALL, OF PHILADELPHIA, PEXXSYLVAXIA.

REGULATOR FOR DYNAMG-ELECTRiC WAGE-l i N LPEGIFICATION forming part of Letters Patent No. 294,180, dated February 26, 1884.

Application filed NcvemberiB, 1883. (No model) I To (tZZ whom, it may concern.-

Be it known that I, CHARLES E. BALL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Automatic Regulators for Dynamo-Electric Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which Figure 1 is a perspective, and Fig. 2 a vertical cross-section, of a dynamo-electric machine with my improvements applied.

My invention has for its object to provide an automatic regulator for dynamo-electric machines.

My improvements are applicable to dynamo electric machines having ring or Gramme armatures, but are designed with special reference to that particular class of machines for which Letters Patent of the United States, dated June 20, 1882, No. 259,791, were granted to me, in which the armature rotates in theinductive field of only one pole of a magnet.

It has heretofore generally been the practice to locate the brushes by which the electrical current is taken off the armature diametrically opposite to each other, and at substantially equal distance from the two sides of the armature, or in what is sometimes known as or called the theoretical position of maximum current. By changing the position of the brushes (or of one of them) with reference to each other, the relative number ofeoils or extent of armature in the inductive field on one side of the armature is varied, and a portion of the current generated on that side of the armature neutralized by the current generated on the opposite side of said armature, and the means of production of such variation is what is herein meant as a regulator for the dynamoelectric machine. To make such regulator automatic, and at the same time give it a larger range of motion and increased sensibility, I construct and arrange the OOIDIDUJDZL tor brushes or collectors in such manner that both may be moved around the commutator, so as to bring them nearer together or farther apart; and I connect both with the armature or movable core of a solenoid or electromagnet whose coils are in the main or external circuit of the dynamoelectric machine, so that attraction or repulsion of said armature or core will affect both brushes equally and move both the same distance, either toward or apart from each other, around or on the commutator. As the suppression of a lamp or other change of resistance of variation in the external circuit of the machine produces a reaction on the regulating-magnet, its armature or core is attracted or repelled, according to the character of such change of resistance or variation, and this produces a movement of both brushes, with the effect of reducing or increasing, ac cording to the direction of movement of said brushes, the production of the electrical current in the machinc-armature.

My improvements accordingly consist in the combination, with the commutator brushes or collectors of a dynamo-electric machine, of a magnet or solenoid and its armature or core, the latter being connected to both of said brushes or collectors, said magnet or solenoid being in the external circuit of such machine, whereby a variation in or change of resistance in said circuit will produce a movement of both said brushes or collectors and alter their relative positions.

My improvements still further consist in the combination, with the armature of a dyna mo-electrie machine which rotates in the inductive field of only one pole of the fieldmagnet of such machine, of a regulating magnet or solenoid in the external circuit of such machine, having its armature or core connected with both the commutator brushes or collectors.

Referring to the accompanying drawings, 1 designates a dynamoelcctric machine having two armatures, B B, on the same shaft, 0, each of said armatures being adapted and designed to be rotated in the inductive field of only one pole for such machine, said poles being shown at D and D, respectively. I have shown my improvements as applied to only one of said armatures; but they may be applied to both, as well as to bipolar or multipolar machines employing l'ingarmatures.

E and E are two brushes or collectors, applied to the commutator I of armature B, and these may be constructed and arranged in the usual or any suitable manner which will permit their movement around or on the commu tator, so as to cause them to approach to or recede from one another. Both of thesebrushes have connections, (designated at ff,) consisting of connecting rods or links,with the armature or core g of an eleetro-magnet, G, whose coils are in or connected with the main or external circuit of the machine, so that a change of resistance or variation in such external circuit will produce a movement, either of attraction or repulsion, of said armature or core, and move both the brushes or collectorscorrespondingly and equally, with the result already pointed out. It is obvious that by con necting both brushes with the regulatorarmature there will be twice as great a range of motion as could be obtained by connecting only one of them therewith, thus giving atwofold extent of regulation and double sensibility to the regulating medium.

\Vhat I claim as my invention is as follows:

1. An automatic regulator for a dynamoel'ectric machine, comprising an ele'ctro-magnet or solenoid in the external circuit of the 1nachine, and having its armature or core connected to both the commutatorbrushes or collectors, said brushes or collectors being movable toward and from each other, substantially as shown and described.

2. I11 a dynamo-electric machine in which the armature is adapted and designed to rotate in the inductive field of only one magnetic pole, the combination, with two movable commutator brushes or collectors, of an electro-mag net or solenoid in the external circuit of the machine, and having its armature or core connected with both said brushes or collectors, whereby variations in said circuit will affect said magnet and produce the movement of both said brushes or collectors, substantially as shown and described.

CHAS. E. BALL.

Vitnesses:

ANDREW ZANE, Jr. WILL H. POWELL.

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