Classifying – separating – and assorting solids – Sifting – Distributers or spreaders
Patent
1984-05-14
1985-03-12
Miles, Tim
Classifying, separating, and assorting solids
Sifting
Distributers or spreaders
209315, 209320, 209329, 209379, 209396, 209405, 209674, B07B 130
Patent
active
045043868
ABSTRACT:
An apparatus is disclosed for screening and separating wood chips or the like according to thickness. In the illustrated embodiment, the apparatus comprises two generally horizontal decks mounted one beneath the other, and with each deck having three screening sections disposed in a serial arrangement along its longitudinal length. Each screening section comprises an opening in the associated deck, a stationary grid composed of parallel rod elements disposed in the opening, and a movable grid which is also composed of a plurality of rod elements and which are disposed in alternating relation with the rod elements of the stationary grid. Further, the grids are arranged so that the gaps between the rod elements are parallel and of predetermined uniform separation throughout. A drive unit is provided for reciprocally moving the movable grid of each screening section, while maintaining the predetermined gap separation, and so that the chips are tossed upwardly and longitudinally toward the discharge end of the apparatus, with the chips having a thickness less than the gap separation falling therethrough.
REFERENCES:
patent: 281115 (1883-07-01), Motley
patent: 810922 (1906-01-01), Dickey
patent: 1552397 (1925-09-01), Edwards
patent: 1606301 (1926-11-01), Jones
patent: 1608640 (1926-11-01), Wilson
patent: 2020800 (1933-03-01), Roger
patent: 2128603 (1936-12-01), Davies
patent: 4301930 (1981-11-01), Smith
Dyren Karl E. A.
Strandberg Gustaf S.
KMW Aktiebolag
Lithgow Thomas M.
Miles Tim
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