Patent ID: 7836803

Claim:
A draw rod positioning nut attachable to a machine tool, said positioning nut comprising: a base portion having an axis, an engagement portion engaged with said base portion, said engagement portion comprising at least two segments, said at least two segments being positionable with respect to one another in a collapsed position wherein said segments engage a machine draw rod, and in an expanded position wherein said segments are out of engagement with a draw rod, a movable ring located on said positioning nut, said ring being movable between a first position in contact with said segments to maintain said segments in the collapsed position and a second position remote from said segments whereby said segments attain the expanded position, wherein in the collapsed position, said engagement portion is rotationally releasable relative to said base portion thereby permitting rotation of the engagement portion and thus effecting an axial movement of the draw rod for selectively positioning the draw rod in a desired axial position in the machine, said engagement portion being rotationally lockable in one of a plurality of incrementally spaced rotational positions to maintain said draw rod in said desired axial position.