CHAMBER FOR TREATING WORK PIECES BY BLAST

摘要

The specification discloses a chamber for treating work pieces by a blasting medium in which blasting devices discharge the medium into the chamber in a side opening in the chamber. Doors are provided for the chamber to permit work pieces to be placed into the chamber and removed therefrom. Also included in the chamber is a shield which moves in front of the opening for the blasting medium before the doors are opened and which moves to a position opposite the opening when the doors are closed. A control device controls the supply of blasting medium to the blasting devices and an automatic control system is provided for correlating the operation of the various devices.