1975-02-28
1976-07-27
Taylor, Dennis L.
E21D 1544
Patent
active
039712257
ABSTRACT:
A shield support assembly for underground mining operations having a caving shield supported from a ground-engaging structure by a support beam pivotally attached at opposite ends to the shield and the ground-engaging structure, the shield being also pivotally attached to such ground-engaging structure by a pivot which is displaceable longitudinally of such structure by pressure-fluid-operated ram means arranged to act between such structure and the shield, the pivot or an extension of the shield beyond the pivot.
Schade Jorg
Wertelewski Wilhelm
Becorit Grubenausbau GmbH
Taylor Dennis L.
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