Chipper roller and knives therefor

Details Chipper roller and knives therefor Chipper roller and knives therefor

1977-12-08

1979-08-14

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

Comminuting elements

83853, 241296, 407 42, 407113, B02C 1806, B02C 1818

Patent

active

041643291

ABSTRACT:
A chipper roller for a two-stage grinding machine has removable circular knives spaced axially and circumferentially in an array following a helical path of two turns about the surface of the roller. Each knife is in the form of a disc with a central aperture for accepting a fastening element and with a cutting edge on one side adjacent its periphery and an annular groove on the same side adjacent said edge creating a rake which cooperates with the walls of the groove to produce curls from chunks of material. The knives are fastened to the roller in recesses with only a minor portion of the knife projecting above the surface of the roller. Upon dulling of the exposed edge the knife can be rotated to bring a sharp section of the cutting edge into operation.

REFERENCES:
patent: 2551167 (1951-05-01), Rolland
patent: 2664617 (1954-01-01), Kralowetz
patent: 2885766 (1959-05-01), Ernst et al.
patent: 3213716 (1965-10-01), Getts
patent: 3378210 (1968-04-01), Bambach
patent: 3540103 (1970-11-01), Saari
patent: 3656220 (1972-04-01), Dupuis
patent: 3786540 (1974-01-01), Lundgren

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