Adjustable lathe template

An adjustable template designed to serve as a pattern for a stylus to follow for an automatic feed lathe for cutting two angles and an interconnecting radius in the workpiece, said template including a flat base member, a rotatable disc supported to said flat base member, an upstanding arcuate shaped member having an arcuate inner surface carried by said rotatable disc, a pair of arms movable relative to said flat base plate and said rotatable disc supported to said flat base member and said rotatable disc, each of said arms having a straight edge surface adapted to lie tangentially to said arcuate inner surface, means for securing said arms to said flat base plate and said rotatable disc independently of each other, whereby said disc can be rotated so that one of said arms lies tangential to said arcuate inner surface during one portion of the cutting operation and said other arm lies tangential to said inner arcuate surface during the other portion of the cutting operation by rotating said rotatable disc while the arms are secured to said flat base member.

A universal template for positioning the cutting tool positioned by an automatic feed of a lathe so as to cut into the workpiece two angles and an interconnecting radius, said template including a flat base member, an upstanding central circumferential member having a circumferential edge, a pair of bar members rotatably supported to said base member having an axis common to said circumferential edge and having a straight working edge that lies tangential to said circumferential edge, all of said edges defining the pattern cut by the cutting tool of said lathe which pattern includes a first angle, a joining radius, and a second angle, means for tracing said pattern including a stylus following said edges, and retractable means for securing each of said bar members once the preselected angles have been adjusted.