Adjustable leg structure

Claim 1

An article of furniture, such as a desk or table, comprising a table top, at least one horizontal tubular support to which the table top is affixed, at least one adjustable leg connected to each horizontal support, each leg being composed of upper and lower hollow non-circular cylindrical tubular leg segments which are of the same shape but of different cross-sectional dimensions so that the end of the smaller dimensioned leg segment is the lower segment and is telescopically slidable within the other leg segment thereby forming an elongated substantially vertical adjustable composited leg, each leg segment having a plurality of unthreaded apertures spaced from each other by a spacing which is the same for both leg segments and vertically arranged in alignment, and clamping means for fastening each pair of telescopically arranged leg segments to each other so that they will be sturdy and substantially free of play, said clamping means comprising a relatively thick L-shaped bar of uniform thickness, said bar being oriented in its upright position and proportioned so that its horizontal branch is slightly smaller in length than the internal cross-sectional dimension of the lower leg segment within which it is disposed and its vertical branch is elongated, held and permanently affixed substantially entirely within the lower leg segment and parallel to the apertured inner wall of the lower leg segment, the vertical elongated branch of the bar having a plurality of threaded apertures which are spaced equally with those of both leg segments and vertically arranged in alignment and adjacent the apertures of both leg segments, and a threaded bolt or bolts each having a tapered unthreaded segment between its threaded segment and its head which is inserted through overlapping apertures of both leg segments and threadedly engaging a selected threaded aperture in said bar.