| 摘要 |
PURPOSE:To facilitate alarm setting operation by providing a minute-unlocking wheel and an hour-unlocking wheel in parallel, and by rotating those unlocking wheels selectively by one alarm rotary shaft. CONSTITUTION:When a feed wheel 38 is rotated in one direction by an alarm rotary shaft 36, the arm 40 of the feed wheel 38 engages with the ratchet 30 of a minute-unlocking wheel 17, which is fed by one pitch of the teeth of the ratchet 30. When the feed wheel 38 is reversed, the arm 41 of the feed wheel 38 engages with the ratchet 31 of an hour-unlocking wheel 18, which is fed by one pitch. |
