| 摘要 |
PURPOSE:To facilitate correcting operation, by a method wherein a disc-shaped month cam which is axially slidable is provided so as to rotate intermittenly by 1/12 turn per turn of a date disc in order to correct the date numeral automatically. CONSTITUTION:Teeth 11 are provided on the surface of a disc-shaped month cam 10 which is axially slidable and engaged with one teeth 12a of an advancing pinion 12. Through engagement of advancing teeth 13 provided on a date disc 1 with the other teeth 12b of the advancing pinion 12, the month cam 10 is intermittently rotated by 1/12 turn per turn of the date disc 1. The date disc is rapidly advanced from the last day of each of even-numbered months (except for February) to the first day of each of odd-numbered months in order to automatically correct the date numeral displayed in the date display window. Thereby, it suffices to make the correction of date for the first day of a month subsequent to an even-numbered month only once a year. Accordingly, correcting operation is facilitated. |
