| 摘要 |
In an annual or perpetual calendar mechanism, a day-of-the-month wheel includes a notch. At each actuation of a lever, a first pawl finger effects an actuation of one step, on one of the teeth of the day-of-the-month wheel. Upon actuation of the lever at the end of a month of fewer than 31 days, a second pawl finger effects, in the notch, an actuation of the day-of-the-month wheel by a whole number of steps. The notch is positioned between two consecutive teeth among the teeth of the day-of-the-month wheel. The day-of-the-month wheel has a peripheral edge which forms the profiles of its teeth as well as the notch. |
| 主权项 |
1. An annual or perpetual calendar mechanism, comprising:
a day-of-the-month wheel which is rotational between 31 successive angular positions each associated with one of 31 days of the month and which comprises a notch and 31 teeth, each of the 31 teeth of the day-of-the-month wheel having a profile formed by a peripheral edge of the day-of-the-month wheel, wherein the peripheral edge of the day-of-the-month wheel also forms the notch which is positioned between two consecutive teeth among the 31 teeth of the day-of-the-month wheel, a month mobile which is rotational between successive angular positions each associated with one of the 12 months of the year, which comprises a month wheel having as many teeth as the month mobile has angular positions, and which defines course beginning stops each associated with a month and operational for controlling a course beginning position when the month mobile is in the angular position associated with the month, an actuation finger for effecting, on one of the teeth of the month wheel, an actuation of one step making the month mobile pass from one month to the following month, at each passage of the day-of-the-month wheel from the last day of the month of one month to the first day of the month of the following month, a lever provided to be actuated once a day, starting from the course beginning position, and a maneuvering device borne by the lever and comprising two pawl fingers, including a first pawl finger for effecting, on one of the 31 teeth of the day-of-the-month wheel, an actuation of one step making the day-of-the-month wheel pass from one day of the month to the following day of the month among the 31 successive positions of the day-of-the-month wheel, at each actuation of the lever, and a second pawl finger for effecting, on the notch, an actuation of the day-of-the-month wheel by a whole number of steps determined by the the day-of-the-month wheel by a whole number of steps determined by the course beginning position of the lever, at the time of an actuation of the lever at the end of a month of fewer than 31 days. |
