Apparatus for screening fibrous stock

Details Apparatus for screening fibrous stock Apparatus for screening fibrous stock

1981-12-28

1984-07-31

Lacey, David L.

Classifying, separating, and assorting solids

Sifting

Combined type

209273, 209306, 209389, B07B 900, B07B 120

Patent

active

044629010

ABSTRACT:
An apparatus for screening fibrous stock. The apparatus includes a preliminary screen, a rotor, and a cylindrical secondary screen. The stock first passes through the preliminary screen into the rotor and secondary screen. The preliminary filtered stock then passes through the secondary screen. Any stock not passing through the preliminary or secondary screens is discharged from the apparatus.

REFERENCES:
patent: 1437720 (1922-12-01), Chapman
patent: 1556372 (1925-10-01), Thaler
patent: 2230647 (1941-02-01), Knight
patent: 2246669 (1941-06-01), Cowan
patent: 3539008 (1970-11-01), McKibben
patent: 3755072 (1973-08-01), stberg et al.
patent: 3785495 (1974-01-01), Holz
patent: 4222864 (1980-09-01), Keller
patent: 4234417 (1980-11-01), Gauld et al.

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