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 267
Fig. 138. Three-Speed Full Magnet Controller for High-Speed Passenger ElevatorCourtesy of Kaestner and Hecht Company 233 184 ELEVATORS magnet controller with interlocking magnet and an extra line switchfor 500 volts direct current. Fiish-Bidton Control. Manipulation. Elevators using push-… … 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…
Electrical engineering
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