Indexing or tabulating mechanisms

Claim 1

PRE-SETTING MECHANISM FOR LATHES OR LIKE MACHINE TOOLS HAVING A BED, A FEED SCREW AND A SADDLE AND IN WHICH TWO SETS OF MEASUREMENTS, EACH TRANSVERSE RELATIVELY TO THE OTHER SET, ARE SO ASSOCIATED WHEN PRE-SET THAT EACH PREDETERMINED MEASUREMENT IN ONE SET IS OPERATIVE ONLY IN CONJUNCTION WITH A PREDETERMINED MEASUREMENT IN THE OTHER SET, COMPRISING IN COMBINATION, A ROTATABLE CARRIER SECURABLE TO AND MOVABLE LONGITUDINALLY WITH THE SADDLE OF A LATHE AND PRE-SETTABLE ABOUT A LONGITUDINAL AXIS OF ROTATION, STOP RODS ON THE CARRIER PARALLEL TO SAID AXIS OF ROTATION AND SPACED AROUND THE CARRIER ON A CIRCLE CONCENTRIC WITH THE AXIS OF ROTATION, EACH STOP ROD BEING PRE-SETTABLE IN POSITION LENGTHWISE OF THE CARRIER, A STOP ON THE LATHE BED ENGAGED BY THE END OF ANY OF THE STOP RODS IN TURN TO TERMINATE A CUTTING OPERATION, TRANSVERSE PRE-SETTING MEANS SECURABLE TO THE LATHE FEED SCREW AND ADJUSTABLE ROTATIONALLY, SAID TRANSVERSE PRE-SETTING MEANS INCLUDING CIRCULAR ADJUSTABLE PARALLEL RINGS EACH HAVING ON ITS PERIPHERY A STOP PIN, A LIMIT STOP ADJUSTABLE TRANSVERSELY SO AS TO LIE IN THE PLANE OF ROTATION OF THE PIN ON ANY ONE OF THE RINGS, AND MECHANICAL CONNECTIONS BETWEEN THE SAID ROTATABLE STOP ROD CARRIER AND THE SAID LIMIT STOP OF SUBSTANTIALLY CONSTANT RATIO OF MOVEMENT.