| 摘要 |
1517236 Shaft position indicating dial A E TAYLOR 16 July 1976 [18 July 1975] 29670/76 Heading G4D A turns counting dial for a multiturn potentiometer or the like has a coupling ring 23 coupled, by a pin 21, the knob 16 and acting upon a mutilated gear 45 to advance a turns counting ring 50 one step for each revolution of the knob 16, the coupling ring having pins 25 which drive the short teeth 46A of the mutilated gear 45 and a convex annular portion 27 which engages with the alternate long teeth 26B of the gear to lock the counting ring 50 against movement between actuations.
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