| 摘要 |
<p>A counter consists of, to simplify the control of component parts and to improve the productivity, a first frame unit (A) comprising a plurality of digit wheels (1, 2, 3), a gear (4) for a digit wheel of a lowermost order, an order shifting-up means (2a, 3a, 5,6) and a zero-resetting means (1b, 2b, 3b, 7, 8,9), a second frame unit (B) being capable to be snap fitted on the first frame unit and comprising a driving gear (10) to be meshed with the gear when attached to the first frame unit, and a cover frame unit (C) being capable to be snap fitted on the first frame unit and to show only one line of the laterally lined digits when attached to cover the first frame unit. The second frame unit may be the base plate (B') of the devices on which the counter will be used. The first frame unit may comprise only a plurality of digit wheels, the gear for the digit wheel of the lowermost order and a zero-resetting bar (9), and the second frame unit may comprise the order shifting-up means and zero-resetting means.</p> |
