Hollow form turning device

A device for forming a hollow within a rotating work piece on a lathe, the device comprising:

• a tool handle, a cutting bar extending from one end of the tool handle, the cutting bar having a longitudinal axis and a cross section at least a portion of which is non-circular, and a cutting tool disposed at a distal end of the cutting bar;
• a tool rest mounted to the lathe and disposed adjacent the work piece;
• and
• a torque arrestor comprising a pair of spaced apart cooperating rollers between which the cutting bar extends, the cooperating rollers being spaced apart to fittingly receive and restrain the cutting bar to allow motion of the cutting bar between the cooperating rollers to facilitate lateral motion of the cutting tool and advancing and retracting the cutting tool within the work piece to shape the inside of the work piece, a pair of cooperating end brackets joined together by a top support bar and a bottom support bar containing the ends of the pair of spaced apart cooperating rollers, each pair of cooperating end brackets being positioned on opposing sides of the torque arrestor, a bearing holding each end of the spaced apart cooperating rollers within the torque arrestor to facilitate rotation of the rollers, and a pair of locking plates provided on each of a forward and rearward face of the pair of end brackets, an upper portion of the locking plates having an opening for receiving a set screw and a lower portion of the locking plates having a slot for receiving a set screw to adjust the spacing between the spaced apart cooperating rollers;
• wherein the non-circular portion of the cutting bar cross section prevents vertical movement and a rotation of the cutting bar along its longitudinal axis when the cutting tool engages the work piece.

A device for forming an item comprising:

• a cutting bar having a handle end, a cutting end opposite the handle end, a longitudinal axis, a cross section at least a portion of which is non-circular to define a profile height of the cutting bar, and a cutting tool disposed at a distal end of the cutting bar proximate the item;
• and
• a torque arrestor comprising a pair of cooperating rollers and a pair of cooperating end brackets joined together by a top support bar and a bottom support bar containing each end of the pair of spaced apart cooperating rollers, each pair of cooperating end brackets being positioned on opposing sides of the torque arrestor and each of the spaced apart cooperating rollers being held within the torque arrestor by a bearing to facilitate rotation of the rollers, and a pair of locking plates provided on each of a forward and rearward face of the pair of end brackets, an upper portion of the locking plates having an opening for receiving a set screw and a lower portion of the locking plates having a slot for receiving a set screw to adjust the spacing between the spaced apart cooperating rollers;
• wherein the cooperating rollers are spaced apart substantially the same distance as a profile height between which the cutting bar extends, and the cooperating rollers are spaced apart to fittingly receive and restrain the cutting bar to allow motion of the cutting bar between the cooperating rollers to facilitate lateral motion of the cutting tool and advancing and retracting the cutting tool within the item to shape the inside of the item, wherein the non-circular portion of the cutting bar cross section prevents vertical movement and rotation of the cutting bar along its longitudinal axis when the cutting tool engages the item.