US488261A

US488261A - boaue

Info

Publication number: US488261A
Authority: US
Publication date: 1892-12-20
Anticipated expiration: 1909-12-20

Description

(No Model.) 2 SheetsSheet 1.

G. J. BOGUE. 'DYNAMO REGULATOR.

No. 488,261. Patented Dec. 20, 1892;

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G. J. BOGUE. DYNAMO REGULATOR.

- No. 488,261. Patented Dec. 20, 1892.

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UNrTnn STATES PATENT OFFICE.

CHARLES J. BOGUE, OF NEW YORK, N. Y.

DYNAMO-REGU LATO R.

SPECIFICATION forming part of Letters Patent No. 488,261, dated December 2-0, 1892.

Application filed February 18, 1892. Serial No. 421,952. (No model.)

To all whom, it may concern.-

Be it known that 1, CHARLES .I. BOGUE, of New York, county and State of New York, have invented a certain new and useful Improvement in Dynamo-Regulators, of which the following is a specification.

This invention relates to automatic regulators for dynamo electric machines and it consists of pole pieces movable circumferentially relatively to the armature.

I will describe a regulator embodying my improvement and then point out thenovel features in claims.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of a dynamo embodying my improvement. Fig. 2 is a transverse vertical section thereof and also showing an automatic cut out in position. Fig. 3 is a detail showing a field pole piece.

Referring by letter to the drawings, A designates the frame of a dynamo in which are supported the field magnets A each consisting of a core a upon which the coils a are wound, and a segmental circumferentially movable pole piece A Each pole piece is substantially in the form of a crescent and may have a longitudinal rib a formed on its rear surface adapted to engage in a channel a in a block a on the core a. The opposite adjacent ends of the pole pieces A are secured together by a plate a which may be of brass, and attached to the pole pieces by means of screws.

B designates the armature rotating within the magnetic field and carrying the commutator B. Brushes B are mounted on a frame B which is supported by the frame A and is capable of being oscillated to adjust the brushes on the commutator. oscillating the frame B I have shown the frame as provided with a gear 6 having its shaft extending through a portion of the frame A and provided at its outer end with a crank or hand wheel 5 Having described the dynamo generally, I will now describe the means for automatically regulating the electric current.

0 designates a line wire leading from one of the brushes B and C designates, as here shown, the return wire leading to the oppo site brush B Lamps 0 are included in the circuit C G. The line wire 0 has a part c As a means for.

leading to an electro-magnet O and from this clectro-magnet the wire 0 may lead directly to the lamps C or as I have shown it, in Fig. 2, an automatic cut out 0 may be within the circuit. In this event, the wire C leading from the electro-magnet 0 extends through the electro-magnet O thence to the lamps, and the portion of the wire 0 leading to the electro-magnet O has a branch a secured to a fixed contact piece 0 In Fig. 1, I have omitted the out out, but have shown a portion of wire a for connection therewith. From the contact piece 0 the current is through a movable contact piece 0 from which a wire 0 extends to the portion of the wire 0, which leads from the electro-magnet G The movable contact 0 is secured to cores 0 of the elec-' tro-magnets G and obviously the circuit will be broken through the contacts 0 0 when the magnet C is energized. The electro-magnet C is secured to the upper portion of the frame A.

D shows a lever fulcrumed to a standard D extending from the frame A and D shows a rod or bar pivotally connected at one end to one end of the lever D and pivotally engaging at its opposite end, with one of the pole pieces A As here shown a slotted arm 01 extends outward from a pole piece A and the rod or bar D is engaged with this arm by means of a'pin passing through said rod or bar and through the slot in the arm d. A retracting spring (1 extends from the opposite end of the lever D to the frame A, and the core D of the electro-magnet G has a pivotal engagement with the lever D between the standard D and the rod or bar D The operation of the regulator is as follows: When all the lamps in a circuit are in operation, with a normal current the segmental pole pieces remain stationary. Under an increase of current, however, due to the cutting out of one or more of the lamps, the overload of current energizes the electro-magnet C which will draw the core D downward and consequently change the position of the segmental pole pieces relatively to the armature B. When the current strength is diminished, the poles will be returned to their normal position through the agency of the spring (1.

When the automatic cut-out is employed in the circuit, an overload of current will energize the magnets C and break the circuit i at c c and thusclirect all of the current through the electro-magnet C and cause it to shift the pole pieces A as before described.

Having described my invention what I claim is:

1. In a dynamo electric machine the combination with an armature and an electromagnet in the circuit of said dynamo of pole pieces movable circumferentially by an overload of current in the electro-magnet, subtially as specified.

2. In a dynamo electric machine, the combination with an armature, of circumferentially movable pole pieces, an electric circuit comprising an electro-magnet a lever operated in. one direction by the electro-magnct and a connection between said lever and the