Variable height work holder

A variable height work table clamp-down device for holding variable height work pieces on a work table, the table having means for retaining a tie down bolt upwardly extending therefrom, comprising:

• a heel member having a generally planar lower surface adapted for resting on the surface of a work table and an upwardly extending thick wall tubular portion having an upwardly spiraled upper surface defined by a series of steps, the tubular axis of the tubular portion being generally perpendicular to the heel member lower surface;
• an elongated pin member having an upper and a lower end, the lower end being affixed to said heel member and the pin member extending upwardly from said heel member, the longitudinal axis thereof being substantially coincident with said heel member tubular portion tubular axis, the pin member having an enlarged diameter head portion at its upper end;
• an elongated clamping bar having an inner end and outer end and an intermediate portion and having an opening therethrough adjacent said inner end slidably receiving said pin member, the outer end being configured to engage a work piece, and boss means adjacent and spaced from said inner end configured to engage a said step on said heel member tubular portion upper surface whereby the height of the clamping bar inner end above a table is selectably adjustable, the clamping bar intermediate portion having means to receive a tie down bolt, said pin head portion being of diameter greater than said clamping bar opening whereby said heel member and said clamping bar are secured to each other.