Tunnel excavator

Details Tunnel excavator Tunnel excavator

1974-05-28

1976-05-25

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 70, 173 43, 173 93, E21D 910, E21C 3300

Patent

active

039588319

ABSTRACT:
An excavator for excavating a tunnel is provided which has a body provided with gathering and transporting means for the materials excavated by the excavator for discharging the same. The excavator comprises a horizontally and vertically swingable boom mounted on the body and actuated by a cylinder-piston assembly interconnected between the body and the boom. A vertically tiltable excavating cutter is tiltably mounted on the forward end portion of the boom with or without a vertically swingable bracket actuated by a cylinder-piston assembly which is interposed between the cutter and the boom. An impact motor is adapted to intermittently actuating the cutter. An extensible and retractable boom actuated by a cylinder-piston assembly may be interposed between the bracket and the horizontally and vertically swingable boom.

REFERENCES:
patent: 3346300 (1967-10-01), Grant
patent: 3586113 (1971-06-01), Grant

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