Mining machine

Details Mining machine Mining machine

1979-12-26

1981-11-03

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 15, 299 18, 299 75, 180 946, E21C 2712, E21C 2924

Patent

active

042982324

ABSTRACT:
A mining machine in which a cutting drum undercuts a vein of coal and side relief cutters make vertical kerfs in the vein upwardly from the undercut. A chisel plate is forced into the coal vein and breaks loose the material above the undercut and between the side relief cuts. The coal falls into conveyors and is loaded into mine shuttle cars for removal from the mine. The side relief cutters and chisel assembly are progressively raised to extract higher levels of coal from the vein until the desired roof height has been reached. The tramming track assembly, which propels the machine, may be rotated 90.degree. to permit extraction from the vein immediately adjacent the initial extraction. All power supplied near the working face of the vein is hydraulic to minimize the risk of fire or explosion, and a water spray system minimizes dust circulation. Hydraulic roof and floor jacks are provided to increase the stability of the mining machine when exceptionally hard material is encountered in the coal vein.

REFERENCES:
patent: 2062655 (1936-12-01), Joy
patent: 2090235 (1937-08-01), Schauer
patent: 2707099 (1955-04-01), Daily
patent: 3006624 (1961-10-01), Doxey
patent: 3181630 (1965-05-01), Coburn
patent: 3318638 (1967-05-01), Kilbourne
patent: 4029165 (1977-06-01), Miller et al.

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