Apparatus for excavating a recess

Details Apparatus for excavating a recess Apparatus for excavating a recess

1988-03-07

1989-06-13

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Cutter shiftable horizontally

173 42, 299 15, 299 75, E21C 2516, E21C 3108

Patent

active

048386154

ABSTRACT:
Apparatus for excavating a tunnel of generally quadrilateral cross-section, the apparatus comprising a cutting head having the head being mounted for rotation about a first axis and a second axis to change the angle of inclination of the cutter. The cutter may be retracted on its support and may be moved transversely of the excavation on a slide, horizontally. It may be moved vertically by mounting the head on an arm pivotally mounted or in another embodiment by mounting the head on a vertically movable carrier carried on a slide. This can be used for excavating by making a set of cuts at various angles; first and second slots are generally parallel at the face but the first slots are inclined to the second, and to the face, so that they intersect. A third set of slots may intersect the first and second sets (for example, vertically) to separate the material from the face in convenient-sized blocks.

REFERENCES:
patent: 2390562 (1945-12-01), Storrs
patent: 3306663 (1967-02-01), Webster
patent: 3314722 (1967-04-01), Webster
patent: 3420577 (1969-01-01), Pentith
patent: 3433533 (1969-03-01), Webster
patent: 3729056 (1973-04-01), Paurat

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