| 摘要 |
1,268,638. Synchros. MORFAX Ltd. 23 May, 1969 [23 May, 1968], No. 24667/68. Heading H2A. [Also in Division G1] A transmitter synchro 5 and a receiver synchro. 6 to which it is connected have different numbers of poles whereby their rotor speeds differ as the ratio of the numbers of poles. The ratio may be changed by selection of a different one of the stators 62, 63, 64 by means of a switch 7. The synchros form part of a pantograph in which a lead screw 3 of a machine tool is controlled by X, Y, motors 17, 21 of a head scanning a template or drawing. The receiver synchro embodies rotor windings 65, 66, 67 matched to respective stator windings 62, 63, 64 and connected to the switch 7. |
