Mineshaft closures

Details Mineshaft closures Mineshaft closures

1985-11-08

1987-08-11

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Vertical

166135, 405132, E21D 100

Patent

active

046858300

ABSTRACT:
The present specification discloses a disclosure for sealing off dis-used open mineshafts. The closure comprises an open topped basket-like framework which has a polygonal shape with a side wall which tapers from the open top towards the base of the basket-like framework. The base has a conical shape with the apex of the conical shape extending inwardly of the basket. When at least partially filled with infill, the conical base positions the infill adjacent to the side wall and tends to force the side wall outwards, securing the basket-like framework in a mineshaft.

REFERENCES:
patent: 376010 (1888-01-01), Redline
patent: 2577610 (1951-12-01), Deupree
patent: 3039534 (1962-06-01), Koop
patent: 3126827 (1964-03-01), McReynolds
patent: 3362478 (1968-01-01), McReynolds
patent: 3451583 (1969-06-01), Lee

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