Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...
Patent
1994-09-20
1996-03-05
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Rotary cutter head with advance direction coincident or...
299 68, 175 62, F21C 2724
Patent
active
054960959
ABSTRACT:
A mining machine for mining coal from outside a hill containing a coal seam wherein a plurality of cutter drums and rotary cutters are pivotally and detachably connected to a pan having an auger conveyor rotatably mounted therein. Certain cutter drums and the rotary cutters are movable in a vertical plane to allow the operator to control the direction of the hole being drilled, and to accommodate the machine to different seam thicknesses or hole heights. A plurality of thrust and torque transmitting units are connected end-to-end between the auger conveyor drive shaft and a prime mover positioned outside the seam tunnel for conveying the cut coal out of the tunnel.
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