The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 145
Fig. 106. Dynamo or Motor Commutator. Commutator Bars. The metallic segments of a dynamo ormotor commutator. Commutator, Flats in. A wearing away or lowering in level ofone or more metallic segments of a commutator. They are prob-ably due in many cases to sparking, set up by periodic springing…
Electricity
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