Automatic tool changer for a lathe

A tool magazine for a machine tool, comprising

• a circular support frame including a drive shaft adapted for mounting on the machine tool and defining an axis of rotation for said support frame concentric with its center;
• a plurality of carrier blocks each having at least one tool holder thereon,
• an equal plurality of channel shaped recesses in said support frome each including guide rails receiving one of said carrier blocks and providing for movement of the blocks out of said recesses along lines parallel to and offset from radial extending through said drive shaft,
• a stationary guide channel section extending outwardly of said support frome and having rails arranged to be aligned with the guide rails in said recesses,
• a stationary circular channel located within said support frome and having an opening aligned with said guide channel section,
• each of said carrier blocks having roller means engaged with said circular channel except when the block is aligned with said stationary guide channel rails,
• a shuttle member movable along said stationary guide channel section and including an arcuate channel segment corresponding to the opening in said circular channel,
• means for rotating said drive shaft to present a selected carrier block at said stationary guide channel section,
• means for moving the selected carrier block outwardly along the rails of said stationary guide channel section to a tool post position.