Mine equipment

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Details

61 45R, 61 84, E21D 1304

Patent

active

040954340

ABSTRACT:
An elongated frame provides a track over a mining machine for a carriage which is hauled along by an endless chain. The carriage carries assembled crown roof support sections to adjacent the newly exposed rock boundary.

REFERENCES:
patent: 2757515 (1956-08-01), Wilbur et al.
patent: 3377105 (1968-04-01), Wallers
patent: 3410098 (1968-11-01), Winberg
patent: 3558193 (1971-01-01), Howarth
patent: 3561223 (1971-02-01), Tabor
patent: 3678694 (1972-07-01), Haspert
patent: 3885397 (1975-05-01), Fujimori
patent: 3905645 (1975-09-01), Bland

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