Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1980-05-02
1981-11-03
Cuchlinski, Jr., William A.
Classifying, separating, and assorting solids
Sifting
Plane sifters
209380, 209392, B07B 128
Patent
active
042984645
ABSTRACT:
A device for primary separation of valuable ore material from gravel or other waste in placer mining prior to sluicing. The separator comprises a frame having sides and front and back ends and adapted to be inclined at an angle to the horizontal during operation. A material entrance is provided at the elevated end. A screen comprising a plurality of hinged rigid plates, laterally extending across the frame, extends from side to side and front to back of the frame and is supported within the frame. The end of the screen at the elevated end of the separator is secured to the frame. The plates are spaced from adjacent plates a pre-determined distance. Screen distortion means comprising a plurality of spaced rows of rounded projections are mounted on the carriage. These projections bear against the bottom surface of the screen whereby, during operation, they move with the carriage back and forth beneath the hinged plates to create a wave action on the screen to move material across the screen from front to back. Water spray means is secured to the frame to spray from overhead onto material on the screen to assist passage of valuable ore and other material through the spaces between the plates into a receptacle beneath the screen and screen distortion means. Since only smaller material ultimately is collected and passed to the sluice box using a separator according to the present invention, relatively little water is needed for the sluicing part of the recovery of valuable ore.
REFERENCES:
patent: 580067 (1897-04-01), Stubbs et al.
patent: 1958322 (1934-05-01), Symington
patent: 3454162 (1969-07-01), Cover
patent: 4190527 (1980-02-01), Spiller
Cuchlinski Jr. William A.
Deroker Equipment Ltd.
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