| 摘要 |
<p>PURPOSE:To enhance assembling workability and reduce the space to store a spring, by securing the resetting of both the head pace and the working member by means of a piece of spring. CONSTITUTION:A spring 5 is stretched between a working member 4 and a point on a rotary working member 3 having a degree of shift less than the point of linkage between the members 4 and 3 when the member 4 is slided in response to the operation of play. The spring 5 functions to return a head pace 1 plus the members 3 and 4 is to their original places in the state under which the member 4 is slided and the pace 1 is advancing. As a result, the returning operation of the pace 1 plus the members 3 and 4 is executed with just a piece of spring 5. This reduces the number of component parts to simplify the assembling work.</p> |
