Mine roof support for an underground mine gallery

Details Mine roof support for an underground mine gallery Mine roof support for an underground mine gallery

1977-01-10

1977-11-08

Taylor, Dennis L.

E21D 1544

Patent

active

040569411

ABSTRACT:
A mine roof support for an underground mine gallery comprises a sole plate adapted to rest on the floor of the mine gallery, a front shield having a front end directed toward the mine face, a rear shield pivotedly connected at one end to the other end of the front shield and projecting rearwardly therefrom, a rocker arm connected at opposite ends respectively to the front and to the rear shield intermediate opposite ends of the shields, an expandable and contractable prop connected at one end to said rocker arm intermediate the ends of the latter and at the other end to said sole plate, and a pair of arms each pivotally connected at one end to the region of the rear shield distant from the front shield and at the other end to the sole plate.

REFERENCES:
patent: 3347050 (1967-10-01), Dommann et al.
patent: 3874178 (1975-04-01), Kunzer

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