초록 ▼

A threading assembly including biasing means for biasing a threading tap or die in a selected direction and a reversible ratchet assembly for applying a torque about an axis coinciding with the axis of the tap or die. An alignment guide concentrically aligns both the axis of the torque and the downw

A threading assembly including biasing means for biasing a threading tap or die in a selected direction and a reversible ratchet assembly for applying a torque about an axis coinciding with the axis of the tap or die. An alignment guide concentrically aligns both the axis of the torque and the downward bias, and a threading chuck is secured to the ratchet assembly for clamping the threading tap or die therein. The longitudinal axis of the threading tap or the central axis of the threading die coincides with the axis of the forces applied to its.

대표청구항 ▼

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

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.