Inventors:
Richard D. Cerra - Acme PA, US
Andrew J. Ciesielski - Greensburg PA, US
Stephen H. Ciesielski - Slickville PA, US
James J. Wagner - Manor PA, US
Thomas A. Wagner - Export PA, US
International Classification:
B02C 19/00
Abstract:
An adjustable screen apparatus for a material destruction device includes a first stationary fixed member and a second member positioned in an operatively juxtaposed and nesting relationship for reciprocal movement relative to the first member, each having a predetermined plurality of openings which are disposed in a predetermined pattern. A guide system is provided for guiding the reciprocal movement of the second member relative to the first member. A power operated drive is coupled to a source of power and to the second member for reciprocally moving the second member between a first position wherein each opening in the second member substantially overlaps a respective opening in the first member for producing large size particles and a second position wherein each opening in the second member partially overlaps each of a pair of adjacently disposed openings in the first member for producing small size particles.
