Mining or in situ disintegration of hard material – Processes – With material-handling
Patent
1981-04-06
1982-11-23
Purser, Ernest R.
Mining or in situ disintegration of hard material
Processes
With material-handling
299 64, E21C 2712
Patent
active
043602355
ABSTRACT:
An ore dislodging mechanism and a method for extracting ore from a vein which greatly increase productivity and reduce health hazards when compared with previous devices and methods. The ore dislodging mechanism includes a chisel bar which is forced into the ore vein to dislodge ore therefrom, and an elevated means for raising the chisel bar in a substantially vertical manner so that each extraction made by the chisel bar is parallel with previous extractions. Side cutters extend vertical kerfs along the sides of the chisel bar and the chisel bar breaks down the coal between the kerfs.
The method includes the steps of undercutting a vein of ore, extending at least one vertical relief cut upwardly from the undercut, forcing a chisel bar into the vein of ore, thereby dislodging the ore therefrom, and raising the means for cutting the relief cuts and the chisel bar mechanism to make progressively higher extractions parallel with lower extractions.
REFERENCES:
patent: 1127395 (1915-02-01), Bemies
patent: 2194474 (1940-03-01), Joy
patent: 3006624 (1961-10-01), Doxey
Hobbs Marmaduke A.
Purser Ernest R.
Simala John J.
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