Threading assembly

A system for threading a workpiece comprising:

• an elongated, generally cylindrical, threading tool chuck having a central axis, one longitudinal end of said chuck having a square receptacle and the other end having clamping means for clamping a threading tool about said central axis, and including a threaded rotatable adjustment member for adjustably clamping a threading tool about a central axis, said threading chuck including a passageway transverse to said central axis for the insertion of a turning tool;
• drive means comprising:
• a ratchet assembly operable about said central axis and including a direction selection arm on one side of said ratchet assembly and positioned to intercept said central axis for effecting selected direction of rotation of drive of said ratchet assembly,
• a conical notch formed in and about said central axis in said selector arm;
• a square shaft on an opposite side, with respect to said one side of said ratchet assembly and insertable into said square receptacle of said chuck, and
• handle means coupled to said central ratchet assembly for rotating said central ratchet assembly about said central axis;
• and
• biasing means comprising a conical tip adapted to fit within said conical notch for applying a biasing force to said conical notch and thereby along said axis to a threading tool, bias being applicable simultaneously with the rotation of said drive means.