E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/32
E21C 47/00 (2006.01) E21C 27/22 (2006.01)
Patent
CA 2010545
A mining machine and method allow coal or the like to be mined substantially as quickly during out cutting as in cutting. A front cutter is mounted at the front of the frame, and a first conveyor -- which preferably comprises a chain conveyor -- conveys cut coal from the front of the frame to the rear and ultimately out of the area being mined. A second conveyor is mounted in back of the front cutter for conveying cut coal from adjacent the rear of the frame towards the front, and ultimately to be deposited on the first conveyor. A rear cutter is located to the rear of the second conveyor for cutting material during out cutting to be moved to the second conveyor as the machine moves rearwardly. The rear cutter is movable from a first inoperative position within the volume cut by the front cutter, to a second, operative position outside the volume cut by the front cutter. The second conveyor may comprise shrouds pivotally mounted about their front ends, with spiral conveyors for conveying coal from the shrouds to the chain conveyor, or may comprise universal conveyor chains mounted in slides with inwardly curved front ends. The rear cutters may comprise cutter drums mounted for rotation about either horizontal or vertical axes.
Delli-Gatti Frank A. Jr.
Justice James C.
Coaltex Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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