Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1978-02-27
1980-02-12
Halper, Robert
Classifying, separating, and assorting solids
Sifting
Plane sifters
209342, 209396, B07B 142
Patent
active
041882881
ABSTRACT:
A screening mechanism which has two ladder-shaped frame systems with spaced parallel ladder stringers and spaced parallel ladder rungs extending between the stringers, wherein at least one of the said frame systems is moving relatively to the other frame system to form sieve zones of continuously changing width with alternating dips of a different depth, curved arches or a different tension in a stretched condition, whereby at least one of the said frame systems is connected to a driving means such as a crankshaft, electro-magnets, pneumatic or hydraulically driven cylinders or the like and is held on link springs, swing supports, rollers, suspended swings, cables, swing metals or the like, while the other frame system is moving by the same driving means shifted by 180.degree..
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Collard Allison C.
Galgano Thomas M.
Halper Robert
Hein Lehmann AG
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