Blast machine system and method

Claim 1

A UNIT MACHINE SYSTEM FOR BLAST-CLEANING WORKPIECES, SAID MACHINE SYSTEM INCLUDING A WORKPIECE RECEIVING DEVICE ADAPTED TO TURN THE WORKPIECE MACHINE ARRANGED TO BOMBARD THE WORKPIECE AS IT IS TURNED, A FEED HOPPER DELIVERING BLAST MEDIA TO SAID BLAST MACHINE, A SEPARATOR RECEIVING CONTAMINATED BLAST MEDIA RESIDUAL TO THE BLASTING OPERATION, SAID SEPARATOR HAVING A DEBRIS DISCHARGE AND A REUSABLE BLAST MEDIA DISCHARGE SEPARATE THEREFROM, SAID REUSABLE BLAST MEDIA DISCHARGE DELIVERING TO SAID FEED HOPPER, A BY-PASS CONVEYOR RETURNING FROM SAID FEED HOPPER TO AN INTERMEDIATE STORAGE H OPPER ARRANGED TO DISCHARGE TO SAID SEPARATOR INTAKE, A FIRST VALVE CONTROLLING PASSAGE THROUGH SAID BY-PASS CONVEYOR, A SECOND VALVE CONTROLLING PASSAGE FROM SAID STORAGE HOPPER TO SAID SEPARATOR, A THIRD VALVE CONTROLLING PASSAGE TO SAID BLAST MACHINE, SAID VALVES BEING SELECTIVELY ACTUATABLE SO AS TO EITHER BLOCK PASSAGE OF BLAST MEDIA THROUGH SAID BLAST MACHINE WHILE CAUSING CIRCULATION OF ALL MATERIAL IN THE SYSTEM THROUGH SAID SEPARATOR, OR TO CAUSE RECYCLING OF THE REUSABLE BLAST MEDIA THROUGH SAID FEEDER HOPPER AND SAID BLAST MACHINE AGAINST SAID WORKPIECES.