Shaker assembly for screening and scalping

Details Shaker assembly for screening and scalping Shaker assembly for screening and scalping

1979-03-05

1980-12-02

Hill, Ralph J.

Classifying, separating, and assorting solids

Sifting

Plane sifters

209395, 209420, B07B 148

Patent

active

042370000

ABSTRACT:
Relatively fine materials are separated from bulky materials by a two-tier screen assembly mounted on springs and shaken by an off balance drive. The screen assembly spans the space between two parallel plates which are joined by staggered crossbeams. An upper screen is supported by longitudinal bars which rest across upper crossbeams, and two lower screens rest on lower crossbeams. The crossbeams are joined by a longitudinal center plate. In use, the forces of heavy weights tending to bend a given crossbeam are transmitted through the center plate to the joined crossbeams to reduce the strain on the single beam.

REFERENCES:
patent: 1510742 (1924-10-01), Gutleben
patent: 1806934 (1931-05-01), Deister
patent: 1920972 (1933-08-01), Deister
patent: 2374775 (1945-05-01), Parks
1977-1978 Pit and Quarry Handbook Buyer's Guide, Pit and Quarry Publ. Inc., Chic., Ill. pp. B144 & B145.

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