Publication: Electrical Industries
Chicago, IL, United States
The Bain Arc Dynamo and Regulator.
The accompanying illustration shows one of the latest types of "constant current arc light" dynamo and regulator, the invention of Mr. Foree Bain and manufactured by The Great Western Manufacturing Company, of Chicago. The field is horse shoe shaped, the core being cast in one piece. The armature is of the Gramme type, large in diameter with numerous independent coils. The regulator is said to be very sensitive, very positive in operation and will maintain a constant current independent of the number of lamps in circuit. The brushes or collectors are of carton, so placed as to produce a constant lap on the commutator.
The automatic regulation is performed by the movement of the brushes around the commutator. The motive power for