Synchronised induction motor specially adapted to television, telemechanies, the transmission of moving pictures and like applications

摘要

389,644. Maintaining defined speeds of motors. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MAT•RIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Feb. 26, 1932, No. 5838. Convention date, Feb. 28, 1931. [Class 38(iii).] In a synchronized motor, synchronizing: current S passes through the winding of an electromagnet E, which is close to a magnet A, or a stator providing a continuous magnetic field, and to a rotating disc D, fixed to the shaft XY to be synchronized and made of conducting material slit along an arc f1, f2 so that the conductivity varies once in the circumferential direction. The synchronizing torque is obtained by the action of the continuous magnetic field on the currents in the disc induced by the synchronizing current. An induction motor M of the type used in electric meters provides the main driving force.