Centrifugal Blasting Machine

Author:  Unger, C. E.
Source:  US Patent 2,263,321
Doc ID:  1941002
Year of Publication:  1941
Abstract:  
This invention relates to a centrifugal blasting machine, and more particularly to a centrifugal blasting unit which may be manipulated by the operator to bring the stream of abrasive fired thereby into abrading contact with the surfaces of the workpieceto be cleaned.