E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/47
E21C 27/24 (2006.01) E21C 35/20 (2006.01)
Patent
CA 1063626
FULL FACE MINER ABSTRACT OF THE DISCLOSURE A miner especially adapted for high-production mining of low-coal seams (24-36" thick) while providing maximum miner safety and complying with applicable fed- eral safety regulations. One or more cutting heads ro- tatable about the vertical axes are provided along with electric motors for rotating the heads. The heads are mounted for reciprocal longitudinal movement along the cutting face, and hydraulic cylinders, or the like, are provided for reciprocating the heads so that they move toward each other during shearing. A paddle-type con- veyor continuously (even during sumping) conveys the cut coal away from the coal face, substantially perpendicular thereto through the formed tunnel. Hydraulic rams asso- ciated with roof-supporting and anchoring means are pro- vided for sumping the cutting heads. A curtain assembly or the like contains the dust generated during cutting to a confined area adjacent the cutting face, and an ex- haust fan or fans continuously draws the dust away from the confined area. Portions of the roof supports extend into the confined area in order to provide maximum sup- port for the roof during cutting.
279981
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