B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/125
B07B 1/00 (2006.01) B07B 1/46 (2006.01) B07B 13/16 (2006.01) B65G 37/00 (2006.01)
Patent
CA 1291068
ABSTRACT OF THE DISCLOSURE Screening apparatus comprises a feeder conveyor, an elevator, a screen box, an end boom elevator and two lateral boom elevators all carried on a wheeled trailer, a tow bar for which is located at the feeder conveyor end. The elevator has an elongate support with an endless belt arranged around two rollers longitudinally spaced apart on said support. A super structure framework on the trailer carries said support in an inclined position, and the screen box is pivotally linked at or adjacent to one end to the or near to the discharge end of said support and hinged to said structure at or adjacent to an opposite end. The support is movable lengthwise of itself relative to said structure and a hydraulic ram and cylinder is provided to effect such length-wise movement of said support consequentially causing pivotal movement of said screen. The screen box has hydraulic rams and cylinders actuable to adjust its angle of inclination relative to said support with consequential movement in inclination of said support.
474490
Eriksson Jan E.
G. Ronald Bell & Associates
LandOfFree
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