MACHINE FOR CONTINUOUSLY REMOVING OVER-SIZED UNDESIRABLE MATERIAL FROM CROP MATERIAL MIXTURES

摘要

The machine is supported on a frame structure which includes a housing and has mounted within such housing a single, endless screening apron which has multi functions. The apron utilizes a plurality of flexibly connected, rectangular screening sections of a mesh quite coarse relative to the relatively regular shapes of the granular material to be saved, and substantially smaller than the coarse, undesirable trash material. The material mixture such as harvested crops including fragments of stalks, leaves, pods, cobs and so forth which in harvesting are intermingled with the desirable granular crop material, is constantly fed axially into a loop portion of one end of the said apron, wherein travel of the apron and at the bottom of the loop portion, the smaller granular material readily flows through and is dropped from the coarse mesh. The over-sized material travels past this point and then over a serpentine or tortuous course which causes the pans to spread widely apart, dropping the trash material at a predetermined area.