Excavators

Details Excavators Excavators

1975-09-15

1977-05-03

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Remote control

299 33, 299 58, 299 75, E21D 910

Patent

active

040210758

ABSTRACT:
This invention relates to excavating apparatus for use in the mining of bituminous sands, oil shale or other friable mineral deposits, and particularly adaptable for use in the "Fixed Arch Shield" mining technique. The excavating apparatus of the invention comprises a supporting framework having at least one excavator carrying member; guide means associated with that member; excavator support means constrained by the guide means for movement longitudinally of the member; means such as a hydraulic ram, for affecting movement of the support within the guide means; arm means pivotally mounted at an end thereof to the support means, and independent drive motors to affect rotation of the arm about its pivot and the ore cutting device respectively.

REFERENCES:
patent: 3420577 (1969-01-01), Pertith
patent: 3547493 (1970-12-01), Starkle

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