Tunnel and gallery excavator

Details Tunnel and gallery excavator Tunnel and gallery excavator

1985-01-16

1987-02-24

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 75, 299 18, E21C 3520, E21C 2506

Patent

active

046452664

ABSTRACT:
A tunnel and gallery excavator comprises a ground contacting mechanism projecting from the front of a motorized drive and chassis and feeds debris to a conveyor. The digging arm has a pair of extendable supports attached to a yoke connected to the arm. The extendable supports are attached to and supported by the ground-contacting mechanism via pivots affording two degrees of freedom and an operating and adjusting device is provided for the extendable supports.

REFERENCES:
patent: 2798711 (1957-07-01), Silver
patent: 2920879 (1960-01-01), Driehaus
patent: 3052455 (1962-09-01), McLaughlin et al.
patent: 4076316 (1978-02-01), Le Begue
patent: 4390211 (1983-06-01), Thompson
"The Way Things Work", 1971, pp. 188-191, George Allen and Unwin Ltd.

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