B - Operations – Transporting – 07 – B
Patent
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
Simbas Sivilingeniõr M. Bjerkan A/s
Smart & Biggar
LandOfFree
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