These early mechanical clocks worked by using a lever that pivoted and meshed with a toothed wheel at certain intervals. 这些早期的机械钟表的工作,通过使用杠杆,心点和啮合与齿轮,在某些时间间隔。
A toothed rack was commonly adopted for the automatic screw thread rotational unloading. 自动旋转脱螺纹一般采用齿轮齿条机构或液压齿轮机构。