Grading plant

Details Grading plant Grading plant

B - Operations, Transporting

07

B

209/98

B07B 1/28 (2006.01) B07B 1/46 (2006.01) B07B 1/50 (2006.01)

Patent

CA 1144111

ABSTRACT A grading plant with self-cleaning screen for lump materials, the screen being pivotally mounted to a carriage displaceable on horizontal beams. The screen has wheels guided in tracks in the beams. Each track has a horizontal portion and a curved downwards directed portion. The screen is in a position for discharging when the wheels are in the lowermost part of the downwards directed portion. The motion of the screen is exerted by a moving device consisting of a wire arrangement for the backwards directed movement and a return spring for the return motion, or a double-acting hydraulic cylinder moving the carriage in both directions.

355806

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