| 摘要 |
PURPOSE:To simplify the mechanism, by providing a press-contact projection for hooking a pause working lever in the course of its return process, and maintaining it in a rocking state, on the pause working lever. CONSTITUTION:When a pause operating lever 26 is pushed in, a pause working lever 36 is swung, a working arm 36b goes into the moving locus of the jaw part of a driving plate 51, and a ratchet working arm 36a turns to a position to be fitted into a ratchet 55b of a pause cam 55. Subsequently, when the pause working lever 36 is operated in the upper direction, the ratchet working arm 36a rotates a ratchet wheel part 55b. When the driving plate 51 lowers, the lever 36 lowers, and as the arm 36a gets over the next tooth of the ratchet 55b, the lever 36 lowers in a state that its lower end part is being swung. The push-in operation to a switch 54 is released by a return operation of a start lever 52, and a motor 1 is stopped. |
