Apparatus for water jet and impact drilling and mining

Details Apparatus for water jet and impact drilling and mining Apparatus for water jet and impact drilling and mining

1980-06-04

1982-03-16

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 17, 175 67, 175 69, 175135, E21C 4500

Patent

active

043197841

ABSTRACT:
The invention is a novel method and apparatus for subterranean drilling and mining, particularly suited to alluvial deposits. The method uses water jets from the lower end of the apparatus to loosen and remove soil. Part of the water is bled off to raise a piston and associated weight, the water being evacuated from the cylinder in which the piston operates from time to time to give periodic impulses to the outer casing. Air may be admitted to the system during the mining mode to increase its efficiency.

REFERENCES:
patent: 2312018 (1943-02-01), Beckman
patent: 2315496 (1943-04-01), Boynton
patent: 2720381 (1955-10-01), Quick
patent: 3674100 (1972-07-01), Becker
patent: 4232752 (1980-11-01), Hauk et al.

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