Duplicator attachment for woodturning lathes

摘要

A duplicator attachment for a woodturning lathe which provides the same freedom and control of the cutting action as in normal, freehand, turning operations, and enables duplication of inside contours, and even bowls. The duplicator also enables the pattern to be supported on the same vertical center as the workpiece and above the workpiece, rather than below or to the side of the workpiece, thereby permitting the full swing of the lathe to be used. The duplicator attachment provides a carriage to bring the cutting tool and a tracer, respectively, against the workpiece and pattern. The carriage has three sections which provide for movement of the cutting tool and tracer longitudinally along the center line of the lathe, laterally perpendicular to the center line of the lathe, and rotationally about an axis mutually perpendicular to the directions of the lateral and longitudinal movements. A handle, attached to a support member on the carriage for the cutting tool and tracer, permits manipulation simulating freehand cutting action. The carriage has a mounting which permits it to be located over the center of the bed of the lathe, as well as to the side of the lathe, thereby permitting duplicating of inner contours, as on bowls which are attached only to the driven shaft which extends from the headstock of the lathe, and requires the cutting tool to move on an axis parallel to the centerline of the machine.