Adjustable chuck assembly for capillary pen system

Claim 1

In a capillary inking pen system for use with recorder apparatus, the pen system including an ink supply, ink conduit means from the ink supply, a recorder apparatus sweep recorder arm and a pen tube having a writing point and being in fluid communication with the ink supply: incrementally adjustable mounting means on one of the recorder arm or pen tube for securing said pen tube to the recorder arm in preselected orientation of one to the other, rotationally and axially with respect to the long axis of the pen tube, comprising at least two cooperating clamping means for securing the pen tube to the recorder arm, a first one of said cooperating means having plural segments thereon arranged to at lEast partially surround said one of the recorder arm or pen tube, a second of said cooperating means including segment engaging means cooperating with said segments to urge them into frictional engagement with said one of the recorder arm or pen tube for axially and non-rotatably retaining said one of the recorder arm or pen tube in said mounting means, said one of the recorder arm or pen tube being freely axially movable and rotatable within said first one of said cooperating means prior to actuation of said segment engaging means.