Separator for Particulate Materials

Author:  Ardee H. Freeman
Source:  US Patent 3,005,547
Doc ID:  1959019
Year of Publication:  1959
Abstract:  
This invention relates to an improved device for separating particulate materails, such as dust from abrasive granules; and more particurly to an improved device for abstracting fine contaminants from reuseable blast media, such as shot, grit, abrasive granules and the like such as are used in connection with apparatus for cleaning or otherwise surface finishing castings and/or other semi-finished products.