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 288
ATOR ENGINE Courtesy of Warner Elevator Manufacturiny Co)ni>any ELEVATORS 201 thread of tlie worm—and the gears were set so that they meshedtogether. Later some makers used spur gears in addition to twoworm wheels, Fig. 154, and bolted them together in pairs. Thewheels were made Avith concave… … Fig. 156. Double-Screw Direct-Current Elevator Machine with Switch ControlCourtesy of Otis Elevator Company Another and better way to secure these advantages is to use twospiral gears meshing together with the worms driving them, as shownin Fig. 155. Fig. 156 gives the general appearance of a…
Electrical engineering
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