Abstract: An apparatus for transferring a pallet with a plurality of workpieces into a gang machine and locating and clamping the workpieces while being machined. The workpieces are received and loosely retained on the pallet while being transferred and each workpiece is located and clamped in the machine independently of both the other workpieces and the pallet. Each workpiece is accurately positioned by locators carried by the machine and at least in part held while being machined by clamps carried by the pallet. The workpieces are moved into engagement with the locators by a lift which moves the pallet toward the locators.

Abstract: A lathe type machine for turning pistons, in which the cutting tool is caused to follow the surface contour of the cam which corresponds in shape to the desired contour of the piston to be machined. The cutting tool and a cam follower are mounted in spaced relation on an arm supported on a tool slide by means of an eccentric pivot pin, which when rotated in opposite directions shifts the tool toward and away from the axis of the work supporting spindle. Means are provided for automatically rotating the eccentric pivot pin through an arc of fixed angular extent in one direction when the tool slide reaches one end of its stroke and in the opposite direction through the same arcuate extent when the tool slide reaches the other end of its stroke. Means are also provided for rotating the eccentric pin slightly when desired to effect a change in size without affecting the extent of arcuate movement of the pin at opposite ends of the stroke of the tool slide.