| 摘要 |
952,052. Brush lifting arrangements for electric motors. ENGLISH ELECTRIC CO. Ltd. March 31, 1960 [April 7, 1959; Sept. 25, 1959], Nos. 11714/59 and 32658/59. Heading H2A. [Also in Division F1] A motor controlling the pitch of the runner vanes of an hydraulic turbine is mounted on the turbine shaft and is fed with current through slip rings 2. The brushes 3 are biased away from the slip rings 2 by springs 4 when switch 6 is closed to energize the control motor, the solenoids 5 are also energized and override the springs 4 to bring the brushes 3 into contact with the slip rings. |
