Abstract: A double bank cleaner for granular material includes two spaced banks of cleaning decks mounted in a frame with a drive motor and rotatable eccentric positioned between the two banks so that the banks of decks can be gyrated in a flat, horizontal plane. An aspirator for the double bank cleaner is also disclosed, and which comprises a plurality of feeders each of which creates a curtain of granular material through which air is passed to remove dust and the like.

Abstract: An apparatus for classifying granular material comprises an outer frame and an inner frame, a screen deck mounted in the inner frame; apparatus suspending the inner frame and deck from the outer frame; resilient apparatus mounting the deck on the inner frame; apparatus for vibrating the at least one screen at the high frequency and in a generally vertical plane and apparatus for applying the lower frequency motion to the inner frame and deck in a generally horizontal plane.