| 摘要 |
<p>The mechanism drives a first wheel (6) which meshes with an identical driven wheel (7). Two plates (9,11) with ears (17,18) single tooth (20) are attached to the balance spring and the ears (17,18) receive impulses from raised teeth (13a,14a) on the driving and driven wheels (6,7). The single tooth (20) engages with a rocker (12) which has a spur (33) alternately blocking temporarily the two main wheels to produce a step by step escapement</p> |
