Universal T.V. channel knob

A control knob assembly for universal replacement of T.V. channel knobs and the like comprising, in combination, a knob bar portion for manual grasping, a cylindrical knob shank portion extending perpendicularly outwardly with respect thereto, said cylindrical knob shank portion being formed of a synthetic plastic material, a coaxial pocket in the outer end of said knob shank portion, said pocket being of "D-shaped" cross-sectional configuration for sliding fit intercoupling with a control shaft of complementary cross-sectional configuration, a circular, disc-shaped, substantially flat skirt member having a central circular opening of such size as to provide for close sliding fit of said skirt member over said knob shank portion, said skirt member being provided, along marginal outer edge portions of one side thereof adjacent the outer periphery, with indicia serving to indicate the rotative setting position of a controlled shaft, and means carried by said skirt member and piercingly receivable within said knob shank portion for fixedly securing said skirt member thereto at any one, selectively, of an infinite number of relatively rotative positions as well as a wide range of relatively longitudinal positions, said skirt member securing means comprising a metal pin member having a pin head portion at one end and a pin point at one other end, means carried by the other side of said skirt member for supporting said pin member and constraining it to radial movement with respect to the axis of generation of said circular skirt member, said pin member being radially axially movable with respect to said skirt member between a first position whereat said pin point is withdrawn from said skirt member central opening, and a second position whereat said point portion projects within said central opening, and means frictionally retaining said pin member in said first position whereby, upon said skirt member being selectively, positionally received on said knob shank portion, said pin member can be radially depressed so that said point portion thereof will be imbedded into said knob shank portion for fixedly securing said skirt member thereto, at the selected position.