Movable support for abrading apparatus

Claim 1

In abrading apparatus, the combination with a first assembly comprising a vertical nozzle adapted to direct a pressurized abrasive stream toward a workpiece, means for supplying said pressurized abrasive stream to said nozzle, and a stationary support therefor, of a movable support having a horizontally flat surface for supporting said workpiece beneath said nozzle, said movable support being adapted to initially position said workpiece with respect to said nozzle, said movable support including a base mounted to said stationary support a first pair of spaced and parallel bars carried by said base and extending in a first horizontal direction, first slides mounted on the respective first pair of bars for sliding movement in said first horizontal direction, horizontally elongated slide structure extending between said slides, said slide structure including a second pair of spaced and parallel bars extending in a second horizontal direction at a right angle to said first pair of bars, second slides mounted on the respective second pair of bars for sliding movement in said second horizontal direction, and a locking screw carried by at least one of each set of slides and being engageable with the bar associated therewith for locking said movable support against movement.