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 283
Fit;. Lll. Overhead Type of Passenger Elevator for Heavy Duty witL Full Magnet ControlCourtesy of Haughlon. Elevator and Machine Co. 247 198 ELEVATORS not span tlie (listauoe from the center of hatch to center of weightslides, auxihary sheaves become a necessity. … Fig. 152. Single Gear Worm and Wheel
Electrical engineering
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