| 摘要 |
A copying machine, in this case a lathe, includes a set of roughing stops carried on an indexable hub, and a fixed finishing stop. A rotary hydraulic motor is provided between a rod on which the template is rockably supported and a lever which is adapted to contact one of a series of roughing stops carried by a hub. The rod carrying the template also carries a second lever arranged to contact a micrometric finishing stop, so that the swinging of the template about the axis of the rod is controlled by selection of an appropriate one of the series of roughing stops to be engaged by the first mentioned lever. |
