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 226
19: DESIGN 189 Fig. 239 illustrates a ijarallel-viovement type, which is alsoshown in Fig. 145, page 126. The brush is held firmly in the holderby a clamping screw, the whole arrangement then being pressedagainst the commutator by the spring, whose tension may be variedby means of the adjusting…
Electrical engineering
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