Tunnel boring machines

Details Tunnel boring machines Tunnel boring machines

1978-08-18

1980-03-11

Pate, III, William F.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 58, 299 90, E21D 904, E21D 908

Patent

active

041925564

ABSTRACT:
A machine for mechanical tunnel boring, of the rotating cutter head type, comprising a grid rigid with the cutter head, parallel to the theoretical boring surface, provided with a set of void spaces wherefrom the cutting tools slightly project, said void spaces having a size corresponding to the optimum dimensions of the fragment of mined material.

REFERENCES:
patent: 848107 (1907-03-01), Karns
patent: 883137 (1908-03-01), Karns
patent: 3005627 (1961-10-01), Tinlin
patent: 3382002 (1968-05-01), Tabor
patent: 3413033 (1968-11-01), Clark
Proceedings of 1976 Rapid Excavation and Tunneling Conference, Chapter 21, Grandori, pp. 355-376, 6-14-76.

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