Scrap shredding apparatus having cutter discs of different thick

Details Scrap shredding apparatus having cutter discs of different thick Scrap shredding apparatus having cutter discs of different thick

1984-05-04

1985-12-24

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241294, 241166, 241DIG31, B02C 704

Patent

active

045601127

ABSTRACT:
Apparatus for comminuting scrap materials, particularly fiber-reinforced resilient materials such as scrap tires, includes a pair of generally cylindrical cutter rolls mounted for rotation with parallel cutter discs of each roll intermeshed closely between cutter discs of the cutter roll. The cutter discs on each cutter roll are of a series of thicknesses, and each cutter disc includes a plurality of cutter segments attached about its periphery. Cutter segments are reversible end-for-end to present a sharp edge for drawing scrap material between the intermeshed cutter rolls. A method of sharpening the apparatus includes removing worn cutter segments from the cutter discs, grinding lateral surfaces of each cutter segment, and thereafter fastening the cutter segments on a next thinner one of the cutter discs. Annular clearing rings surround the shaft of each cutter roll between neighboring cutter discs of that cutter roll. The clearing rings are free to move radially and have a large enough size to force cut pieces of scrap material radially outward from between the neighboring cutter discs.

REFERENCES:
patent: 3931935 (1976-01-01), Holman
patent: 4329767 (1982-05-01), Niiti

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