Tunneling equipment

Details Tunneling equipment Tunneling equipment

1975-04-11

1976-06-29

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

61 85, 214133, E21D 908

Patent

active

039662560

ABSTRACT:
A cutting tool is mounted on the head of a support tripod, the legs of which are double-acting hydraulic cylinders. The rear ends of said cylinders are either pivotally connected to a frame portion of a tunneling machine or to movable barrel portions of three base cylinders having fixed rod portions. The cylinders are selectively extended and retracted for the purpose of moving the cutting tool forwardly and rearwardly and also up and down and sideways.

REFERENCES:
patent: 3215391 (1965-11-01), Storm
patent: 3288421 (1966-11-01), Peterson
patent: 3556599 (1971-01-01), Fikse
patent: 3578809 (1971-05-01), Cunningham
patent: 3612609 (1971-10-01), Reuls

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