Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1978-01-05
1979-04-17
Rolla, Joseph J.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209664, 209668, 209285, B07C 506, B07B 118
Patent
active
041496370
ABSTRACT:
Apparatus for size-grading elongated objects of differing diameters, such as green beans or the like, comprises concentrically arranged inner and outer hollow rotatable slotted drums, with the outer drum having a greater number of axially extending circumferentially spaced apart slots therein than the inner drum; drive mechanisms for rotating both drums in the same direction but at different relative speeds, whereby the slots in the inner and outer drums overlap in different relationships and cooperate so as to define entry slots of different widths at different peripheral positions around the outer drum; an object feeding chute outside the outer drum for directing objects to be size-graded to an entry slot of desired width; a conveyor within the inner drum for receiving size-graded objects which have fallen through the selected entry slot, and a collector on the outside of the outer drum for collecting those objects which have not fallen through the selected entry slot. An adjustable mechanism to rotatably shift the inner drum with respect to the outer drum enables relocation of the entry slot of desired width relative to the object feeding chute. The apparatus is further adapted to length-grade the objects by the addition of axially spaced apart rods along the slots in the inner drum.
REFERENCES:
patent: 1118834 (1914-11-01), Woods
patent: 1196975 (1916-09-01), Pease
patent: 2207131 (1940-07-01), Pellam
patent: 2687212 (1954-08-01), Kerr et al.
patent: 3259241 (1966-07-01), Hughes
patent: 3269533 (1966-08-01), Sandmeyer
Nilles James E.
Rolla Joseph J.
Starr, Incorporated
Wacyra Edward M.
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