| 摘要 |
The mechanism includes a counter frame and a plurality of toothed counting wheels rotatably mounted on a common shaft and each having a respective heart-shape resetting cam fixed thereto. To reset the counting mechanism to zero, the cams are actuable by respective zero setting fingers of a zero setting rake operable, against spring bias, by a resetting slide shiftable in the counter frame transversely of the counting wheel shaft. A plurality of counting wheel stepping pinions are mounted on a common shaft which is displaceable radially of the counting wheels. During zero setting of the counting wheels, the pinions are disengaged therefrom and are maintained in their respective angular orientations by fixed elastic tongues. The resetting slide includes a plate having a width substantially equal to the axial length of the counting wheel set, and the zero setting fingers are arranged in fixed positions on this plate. The plate has wall portions extending from its opposite longitudinal edges and mounting the common shaft of the pinions in parallel with the common shaft for the counting wheels. The common pinion shaft is mounted in elongated slots so as to be shiftable relative to the slide against frictional resistance produced by spring pressure. Releasable detent means are provided to latch the slide in a position in which the pinions are engaged with the respective counting wheels.
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