Grit Blasting Apparatus And The Like

Author:  Sargrove, J. A.
Source:  US Patent 2,520,566
Doc ID:  1950002
Year of Publication:  1950
Abstract:  
This invention relates to apparatus for cleaning or abrading by means of projected particles of grit such as sand, "carborundum" or other abrasive material. The invention relates more particularly but not exclusively to a process in which such apparatus is controlled automatically, and has for its primary object to provide an improved form of apparatus of this kind. The invention is however applicable to other systems in which suction is used to convey granular or pulverulent material.