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 260
ans cab. A section through a pneumaticsander of this kind is shown in Fig. 123. Sand for use as above de-scribed has to be dried very carefully in order that it may flow freely. Electrical Devices. Canopy, or Hood, Sivitch. An overheadswitch, sometimes called a canopy switch, is commonly placed… … Fig. 121. Typical Rheostat withCast-iron Grids 225 130 ELECTRIC RAILWAYS current off from the controller wiring so that the controllers will beabsolutely dead. When two such switches are used, one on each endof the car, they are connected in series. Car Circuif Breaker. Frequently on large…
Electrical engineering
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