| 摘要 |
PURPOSE:To realize a middle three-hand clock or a small second-hand clock by one movement by forming wheel lines driven by a rotor into two systems and constituting one wheel line for the middle three-hand one and the other for the wheel line for shifting the position of the second hand from the center of the clock. CONSTITUTION:A rotor pinion 1a rotates the 5th wheel, the 4th wheel, the 3rd wheel, a minute gear, a cylinder cam and a cylinder wheel and drives a minute hand and the second hand. Moreover, a pinion 1e fixed to one part of a magnet 1d rotates a second hand wheel 19 through the intermediary of a transmission wheel 16, the 1st motion transmitting wheel 17 and the 2nd motion transmitting wheel 18 positioned between a ground plate 8 and a back material member 20. In the case of the middle three- hand clock, the wheel line driving the above-mentioned second- hand wheel is removed, while the second hand is fitted to the 4th wheel. |
