Excavating machine

Details Excavating machine Excavating machine

1974-08-21

1977-02-01

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Stepper-type advance-causing means

180 8R, 299 57, 299 75, E21D 910

Patent

active

040059057

ABSTRACT:
A machine for excavating underground galleries, comprising a frame displaceable within a gallery, an arm pivotally connected to said frame, means for adjusting the orientation of said arm in a plurality of directions, said arm having a rotary tool carrier provided with cutting tools distributed over the periphery thereof located to operate in a plane perpendicular to the direction of the arm, the machine having means enabling the pivotal connection between the arm and the frame to occupy two distinct alternative positions, in each of which positions the means supporting said pivotal connection can be immobilized.

REFERENCES:
patent: 2327928 (1943-08-01), Osgood
patent: 2452632 (1948-11-01), Cameron
patent: 2619338 (1952-11-01), Lingren
patent: 2973949 (1961-03-01), Densmore
patent: 3512597 (1970-05-01), Baron
patent: 3663054 (1972-05-01), Dubois
patent: 3776592 (1973-12-01), Ewing

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