Lathe tool holding and operating attachment

Claim 1

AN ATTACHMENT FOR ADAPTING A LATHE OF THE TYPE HAVING A HEADSTOCK, HORIZONTAL CARRIAGE SUPPORTING WAYS AND A LEADSCREW FOR REPETITIVE OPERATIONS; SAID ATTACHMENT COMPRISING A FRAME STRUCTURE ADAPTED TO BE DETACHABLY SUPPORTED ON THE WAYS OF A LATHE BED, MEANS FOR CLAMPING SAID FRAME STRUCTURE IN A DESIRED FIXED POSITION ALONG THE WAYS, A TOOL REST, A SUPPORTING CARRIAGE ON WHICH SAID TOOL REST IS MOUNTED, MEANS FOR MOUNTING SAID CARRIAGE ON SAID FRAME STRUCTURE FOR LIMITED ROCKING ACTION ABOUT AN AXIS DISPOSED BELOW AND PARALLEL TO THE LATHE SPINDLE AXIS WITH RESULTANT MOVEMENT OF A TOOL CARRIED BY SAID TOOL REST AND DISPOSED SUBSTANTIALLY HORIZONTALLY OPPOSITE THE SPINDLE AXIS TOWARD AND AWAY FROM THE SURFACE OF A WORKPIECE CARRIED BY THE SPINDLE; SAID MOUNTING MEANS FOR SAID CARRIAGE ALSO AFFORDING CLEARANCE FOR RECIPROCATORY MOVEMENT OF SAID CARRIAGE AND THE TOOL REST CARRIED THEREBY IN A PATH PARALLEL TO THE AXIAL LINE OF SAID ROCKING MOVEMENT WITH RESULTANT MOVEMENT OF THE TOOL LONGITUDINALLY OF THE AXIS OF ROTATION OF THE WORKPIECE, MEANS LIMITING THE EXTENT OF ROCKING MOVEMENT OF SAID CARRIAGE, MEANS ADJUSTABLY LIMITING THE EXTENT OF SAID RECIPROCATORY MOVEMENT OF SAID CARRIAGE TOWARD THE LATHE HEADSTOCK, OTHER MEANS ADJUSTABLY LIMITING THE EXTENT OF SAID RECIPROCATORY MOVEMENT IN THE OPPOSITE DIRECTION, POWER ACTUATED MEANS CARRIED BY SAID FRAME STRUCTURE AND OPERATIVELY CONNECTED TO THE LATHE LEADSCREW AT A POINT ADJACENT TO THE POINT ON THE LATHE BED WAYS ON WHICH SAID FRAME STRUCTURE IS MOUNTED, MANUALLY ENGAGEABLE, NORMALLY DISENGAGED MEANS FOR CAUSING SAID POWER MEANS TO MOVE SAID CARRIAGE TOWARD THE LATHE HEADSTOCK, AND RESILIENT MEANS OPPOSING THE ACTION OF SAID POWER ACTUATED MEANS AND EFFECTIVE, UPON DISENGAGEMENT OF THE POWER ACTUATED MEANS TO MOVE SAID CARRIAGE AWAY FROM THE LATHE HEADSTOCK TO THE EXTENT PERMITTED BY SAID OTHER MEANS FOR LIMITING MOVEMENT OF SAID CARRIAGE.