Adjustment for table displaying graphics

摘要

The table is designed for laying out plans and drawings to be examined by personnel (2) standing up. The drawing is placed on a movable support (1) with a concave surface under a battery of lamps (7). The concave surface has cylindrical curvature and may be moved toward or away from the user on a concave surface on top of a support pedestal (6). The concave support (1) may be locked in position by spring-loaded bolts in the bottom surface of the support which may be released by tightening a tension belt. Both bolts and the tension belt are fixed in the movable support. When loose, the tension belt is tensioned against the friction surface on top of the pedestal by the springs. The belt is tensioned by a hand-operated lever (8), mounted on the support (1), to lift it off the friction surface and allow the concave support to move freely.