Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 46
Fig. 21. Commutator with Simple Tvim Commutator with Double Turn metallic springs or brushes which lead the current due to the gen-erated e. m. f. to the external circuit. If, as in Fig. 23, these brushesare so set that each half of the split tube moves out of contactwith one brush and into contact…
Electrical engineering
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