Classifying – separating – and assorting solids – Stratifiers – Movable bed
Patent
1980-08-25
1982-11-16
Yudkoff, Norman
Classifying, separating, and assorting solids
Stratifiers
Movable bed
209489, 209502, 209250, 209437, 406 62, 209 44, 209 64, B07B 700
Patent
active
043593836
ABSTRACT:
A portable, dry-placer mining apparatus is provided with a vacuum chamber which defines a contained region of lower-than-atmospheric pressure which establishes the mode or means for drawing material into the chamber. The material is then ejected therefrom at a rate determined by the differential pressures established internal and external to the vacuum chamber. To prevent material impaction from interferring with the vacuum controlled output flow of material, any tendency of the material toward impaction is disrupted by an air stream flowing therethrough in response to the lowered pressure within the vacuum chamber. The material is output to a vacuum controlled separator device which is vibrated to separate denser from less-dense materials. A vacuum responsive frequency control is incorporated in the vacuum responsive vibratory drive of the separator device. The entire device is easily manually transportable and may be fitted to a conventional backpack frame.
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Flickinger Don J.
Yudkoff Norman
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