VARI-MESH

MACHINES FOR CLASSIFYING OR SORTING FINELY DIVIDED SOLID MATERIALS COMPRISED OF A MIXTURE OF RELATIVELY FINE AND COARSE PORTIONS, BY THE ACTION OF A GASEOUS STREAM OR STREAMS WHEREIN THE FINE PORTION OR PORTIONS OF THE FINELY DIVIDED SOLID MATERIALS IS SELECTIVELY COLLECTED IN A GASEOUS STREAM OR STREAMS SEPARATE FROM THE RELATIVELY COARSE PORTION OR PORTIONS