Automatic programmed profile lathes

Apparatus for controlling the operation of an automatic program profile lathe to selectively effect rough cutting of the workpiece held thereon comprising a cross feed, a post slidably located on said cross feed, a tool held on said post, hydraulic means for reciprocally moving said post in the in-feed direction toward said workpiece and in the out-feed direction away from said workpiece comprising a source of fluid under pressure, a pilot valve for regulating the flow of fluid to determine the direction of movement of said post, a lever pivotally mounted on said post for actuating said pilot valve, said lever having an arm extending therefrom, stop means pivotally arranged in the plane of movement of said arm, said stop means having a cam surface for engaging said arm on movement of said tool post in the in-feed direction, said arm being operable in response to the contour of said cam surface to operate said valve to limit the flow of fluid to said hydraulic means at a predetermined position for arresting the movement of said post in the in-feed direction and means for adjusting the position of said stop in the plane of movement of said arm to provide a plurality of selective positions for arresting the movement of said post at different distances of in-feed.