Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 978
Fig. 388 SINGLE WORM AND GEAR ELECTRIC ELEVATOR, BASEMENT fNSTAIr« LATION 944 Steam Engineering In addition to the waste of power caused by unnecessarystarts^ there is the tremendous strain to which the appar-atus and cables are subjected when the car is suddenlystopped on the down trip; there is…
