Shot Classifying Apparatus

Author:  Metal Improvement /Burney,Bickel +
Source:  US Patent 3,421,618
Doc ID:  1969005
Year of Publication:  1969
Abstract:  
This invention relates to classifying apparatus particularly adapted for segregating shot adapted for peening operations. It also provides by means of a plurality of generally helically shaped flight members for removing contaminants as well as dirt and foreign matter from the shot. Through the use of associated screening apparatus, shot of different size can be selected prior to sorting.