Solid material comminution or disintegration – Apparatus – Combined or convertible
Patent
1976-03-08
1977-10-04
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Apparatus
Combined or convertible
241236, 51249, 241DIG31, B02C 1326
Patent
active
040520137
ABSTRACT:
Multiple cutting discs are fixed in spaced-apart positions on each of two side-by-side counterrotating shafts so that peripheral portions of the discs on each shaft extend into the spaces between discs on the opposite shaft. Each disc has a smooth cylindrical peripheral surface which meets opposed sidewalls at sharp continuous cutting edges. The clearance between adjacent discs on opposed shafts is small so that their cutting edges coact to shear material fed into the bight between opposed counterrotating discs in their feedthrough direction. Removable infeed teeth project from the peripheral surface of each disc at circumferentially spaced positions to help feed material into the bight between opposed discs. Material shredded by the discs falls onto a slowly rotating screening drum encircling the disc assembly. The smallest shredded pieces pass through such drum onto a discharge conveyor. Larger pieces are carried by the drum upwardly back to the infeed side of the cutting discs for reshredding into smaller pieces. A powered disc-sharpening grinder associated with the disc assembly simultaneously grinds the peripheral surfaces of all cutting discs on a shaft, after removal of their feed teeth. A lugged infeed conveyor feeds tires one at a time from a tire stack upwardly to the infeed side of the cutting disc assembly. The feeding of a tire into the disc assembly is alternated with the feeding of shredded material for reshredding so as not to overload the disc assembly.
REFERENCES:
patent: 2726047 (1955-12-01), Treshow
patent: 2853246 (1958-09-01), Schoonover
patent: 3633833 (1972-01-01), Ehrlich
patent: 3656697 (1972-04-01), Nelson
patent: 3837490 (1974-09-01), Driebel et al.
patent: 3931935 (1976-01-01), Holman
Ehrlich John T.
Ehrlich Stanley V.
Custer, Jr. Granville Y.
Georgia-Pacific Corporation
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