| 摘要 |
PURPOSE:To reduce load at the time of reset operation and improve the efficiency of manipulation by rotating an engaging part of a shifting member while depressing it by the engaging part of a sliding lever at the reset operation to release the engagement between double pawls and a star gear temporally. CONSTITUTION:A ball 54 is pivotally mounted on a ball shaft 57 and double pawls 58A, 58B to be alternately engaged with a star gear 34 of the lowest digit wheel 29a are unitedly mounted on the leading end part of the ball 54. An engaging part 60 consisting of projection projected from the opening 27 of a frame 3 into a recessed part 17 is projected on the upper front end part of the outside of the ball 54 and, by depressing the engaging part 60 downwards by a sliding lever 6 at the time of reset operation, the ball 54 is rotated at a small angle in the counterclock direction against a spring 61 and the engagement between the star gear 34 and the double pawl 58B is temporally disengaged. Said constitution makes it possible to reduce load at the time of reset operation and improve the efficiency of manipulation. |
