Classifying – separating – and assorting solids – Plural – diverse separating operations – Sifting and stratifying
Patent
1974-12-04
1976-02-17
Lutter, Frank W.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Sifting and stratifying
209483, 209490, B07B 1300
Patent
active
039390640
ABSTRACT:
A plurality of axially spaced blades are rotated by a drive shaft positioned above the feed trough. The blades rotate transversely through the upper feed layer skimming off the foreign matter which is deposited in a container alongside the trough as the blades are rotated downwardly. Preferably, the blades are rotated through scraping wires on their downward track to clean the blades prior to passing through the feed once more.
REFERENCES:
patent: 1073758 (1913-09-01), Hopkins
patent: 1439699 (1922-12-01), Fisk
patent: 1466894 (1923-09-01), Dunton
patent: 2591609 (1952-04-01), Roberts et al.
patent: 3057329 (1962-10-01), Cordis
patent: 3773175 (1973-11-01), Wallace
patent: 3831751 (1974-08-01), Pirovano
Hill Ralph J.
Lutter Frank W.
U. S. Industries, Inc.
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