| 摘要 |
609,228. Radio apparatus. COLLINS RADIO CO. Jan. 1, 1946, No. 64. Convention date, Jan. 12, 1945. [Class 40 (v)] [Also in Group XXXVII] In a remote control arrangement providing a number of alternative control units, operation of any unit renders the rest inoperative. Each unit comprises a gain control 12, a channel selector switch 10, a C.W., M.C.W. and 'phone selector switch 11, and a control switch 13. Corresponding leads C from the individual units are connected in parallel. The control switch 13 (see Group XXXVII) closes the corresponding pairs of contacts 20a-d, 21a-d, when rotated to " ON," being then held by the latch 23 and catch 24. In passing from " OFF " to " ON " the arm 20c momentarily engages an intermediate contact 21e, interconnecting the lines 26, 28, and energizing via lines 26, 27 catch release magnets 25 in all units. Any other unit in " ON " position is returned by a spring 23 to " OFF," while the switch 13 being manually operated latches " ON " when fully rotated.
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