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 224
lso moves the slide valve 3 and con-nects the port B with the exhaust port D. Air from the chamber Cis now exhausted into the atmosphere; the piston 4 moves downwardand closes the switch in the motor circuit; and the pump starts. Thisaction continues, and maintains the required pressure in the… … ■ • -•-•---• -- • ■ ■■ ■ -^ i^MJJAMMM
Electrical engineering
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