Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 973
traction machineDesigned for Basement Installations stallations. The brake is slightly different in appearancebut performs the same functions as does the direct currentbrake. The safeties used on the Otis Traction Elevators arefound on the geared traction elevators. The main differ-ence between the… … Fig. 385magnet controller Fig. 385 shows the Otis electric magnet controller, andFig. 386 shows the standard car switch. With this operatingdevice the current is automatically and gradually admittedto the motor, enabling the operator to start and stop thecar without shock or jar. This controlling…
