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 268
PERMANENT F/flDRE^TANCE Fig. 139. WiritiK Diagram of Three-Speod Full Magnet Contmllrr \s\\\\ I Iorlocang Magnet ami Extra Lino SwitrhCourtcsij of Kdcsliicr ond Ili-cht Compmni button controls are largely used in hospitals, apartment houses, andprivate dwellings. They are necessarily one-speed… … VIEW OF THE CATSKILL MOUNTAIN INCLINE RAILWAY The total length of the road is 7000 feet, with an average grade of 23 per cent. The road is of the three-rail type and as usual in this type of railway the two cars are attached to the same cable and form a partially balanced system. Safety devices are…
Electrical engineering
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