Apparatus for advancing a low-height drift through a subterranea

Details Apparatus for advancing a low-height drift through a subterranea Apparatus for advancing a low-height drift through a subterranea

1979-11-02

1981-07-14

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Stepper-type advance-causing means

299 64, 299 87, E21C 2724, E21C 2902

Patent

active

042782937

ABSTRACT:
An apparatus for cutting a flat elongated channel, chamber or passage in subterranean strata, e.g. a crosscut between two mine galleries or shafts, which comprises upper and lower shoes or shields which can be spread apart by a fluid-cylinder system and to which a frame is connected by further fluid cylinders, this frame carrying an excavating worm whose flights are formed with picks for removing the face of the channel to be advanced. A conveyor extends past the frame or through the latter to carry rearwardly the detritus excavated by the worm.

REFERENCES:
patent: 3128998 (1964-04-01), Sibley
patent: 3524680 (1970-08-01), White
patent: 3640580 (1972-02-01), White
patent: 3874735 (1975-04-01), Delli-Gatti
patent: 4095845 (1978-06-01), Paurat
patent: 4118072 (1978-10-01), Kelley et al.
Gluckauf, Dec. 6, 1961, p. 1521.

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