Dual rock cutter wheel trencher

Details Dual rock cutter wheel trencher Dual rock cutter wheel trencher

1978-12-04

1980-10-28

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

173 43, 299 15, 299 72, 299 75, E21C 2924, E21C 2516

Patent

active

042303729

ABSTRACT:
Apparatus and method for digging deep vertical walled trenches in solid rock such as limestone. The apparatus comprises a base supported by four crawler type traction means. A turntable is translatably carried by the base and in turn supports a prime mover and a pivoted extendable boom including means for rotating the boom about its longitudinal axis. A dual cutter is supported on the end of the thus articulated boom and is assembled so that the outermost cutter teeth are wider than any other part of the boom assembly. The trenching method includes cutting a pair of narrow slots by means of the rock saws and then removing material between the slots.

REFERENCES:
patent: 428951 (1890-05-01), Richards
patent: 2517267 (1950-08-01), Watson
patent: 3460691 (1969-08-01), Wieger et al.
patent: 3596997 (1971-08-01), Valantin
patent: 3785705 (1974-01-01), Binger et al.

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