(under subclass 99) Abrading machine provided with at least two receptacles for holding the abrasive material wherein one receptacle feeds abrasive by gravity to a second receptacle which subsequently feeds abrasive to mixing chamber for the abrasive propellant.
(1) Note. The propellant may be a pressurized fluid and/or liquid. The term "propellant" is the medium which carries the abrasive material from the supply tank or hopper to the blasting nozzle and workpiece.
