Pitch seam mining

Details Pitch seam mining Pitch seam mining

1983-09-22

1988-08-16

Massie, Jerome

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 18, 299 67, E21C 3520

Patent

active

047639555

ABSTRACT:
A miner, and method of mining, are provided for pitch seam mining of coal. The cutting heads powered from a power source at the mouth of the seam are introduced into the seam with a desired angle of inclination, and a chain conveyor with conveying elements extending between two spaced loops of chain conveys the cut coal from the seam to the mouth. Bucket conveyors, or drag flight conveyors, are preferred. The bucket conveyor can be used for pitch seam mining where the angle of inclination is about 15.degree.-80.degree. from the horizontal, and the drag conveyor can be utilized where the angle of inclination is about 15.degree.-35.degree. from the horizontal. A pair of powered shafts extend from the cutter power source to the cutting heads, and support the chains via sprockets, guides, and the like.

REFERENCES:
patent: 3556599 (1971-01-01), Fiske
patent: 3943644 (1976-03-01), Walz
patent: 4120535 (1978-10-01), Delli-Gatti
patent: 4123109 (1978-10-01), Hill
patent: 4225186 (1980-09-01), Stratton
patent: 4280732 (1981-07-01), Haspert
patent: 4330155 (1984-05-01), Richardson et al.
patent: 4332420 (1982-06-01), Coski
Link-Belt Company Catalog, 1950, pp. 1116, 1117, 1127-1130, 1137, 1145, 1146, 1150.

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