| 摘要 |
PROBLEM TO BE SOLVED: To show clearly various angle and straight lines at every hour by a long hand rotating around a short hand as an axis on a dial, by rotational movement and successive stop of a short hand gear together with the long hand for displaying the next hour during residual five minutes after stop of fifty-five minutes during which the short hand indicates a letter on the dial at every hour. SOLUTION: A long hand shaft has a power enough to revolve two, long and short, hands even if the long hand and the short hand are mounted thereon, therefore a circular plate 9 is fixed on the long hand shaft as a method for, first of all not giving power for making one revolution of the long hand to the short hand. A circular plate 10 with a partial gear is fixed by being piled on the circular plate, so as to function on an auxiliary wheel 12 only for the period from fifty-five minute to sixty minute during sixty minutes of one revolution. In this needle type timepiece structure, a groove 11 of the circular plate 9 and the circular plate 10 with a panel gear is formed, so that the auxiliary wheel 12 is revolved smoothly by revolution of the circular plate 9 and the circular plate 10 with a partial gear.
|
