| 摘要 |
PURPOSE:To facilitate numeral matching operation at low cost by uniting the gear part and shaft part of a pinion and by energizing them with a spring. CONSTITUTION:A pinion gear 2a and a pinion shaft 2b are united and fitted around a pinion 22 supported on a frame 4. Then, a spring 5 is wound around the pinion 22 between the frame 4 and pinion gear 2a. Further, the pinion shaft 2b and frame 4 are provided with pawls to engage with each other. For numeral matching, the spring 5 is pushed down to shift the pinion gear 2a from a number wheel 13 and in this state, the number wheel 13 is matched with an optional number before the spring 5 is released from being pushed down. |
