Tunneling system

Details Tunneling system Tunneling system

1980-06-18

1982-12-07

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Stepper-type advance-causing means

299 33, 299 76, E21D 910

Patent

active

043623379

ABSTRACT:
The system for digging subterranean galeries comprises a cutting tool articulated on a frame and mounted so as to be movable along the height of the mine face. This frame is provided with ground support means and with propulsion means for following the progress of the cutting, the articulation point of the cutting tool being situated in the upper half of the system in operating position. The articulation point of the cutting tool may be situated on a member movable with respect to the frame and movable in a direction substantially parallel to the direction of advance. The shaft bearing the cutting tool may be mounted on two bearings, one of which is movable vertically to give the tool an oblique path in a pre-determined direction.

REFERENCES:
patent: 1736853 (1929-11-01), Fisher
patent: 3420577 (1969-01-01), Pentith
patent: 3879088 (1975-04-01), Sodder et al.
patent: 3966258 (1976-06-01), Dolecki
patent: 4040699 (1977-08-01), Franklin
patent: 4232905 (1980-11-01), Dick

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