Mine roof support for an underground mine gallery
AssigneeKlockner-Werke AG
InventorWilly Watermann
Life of this patent
Estimating the term…
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.
Claims10
A mine roof support for an underground mine gallery comprising a sole plate adapted to rest on the floor of the mine gallery;
- a front shield adapted to engage the roof of the mine gallery and having a front end directed toward the mine face;
- a rear shield having a front end pivotally connected to the other end of said front shield and projecting rearwardly from the latter;
- a rocker arm connected at opposite ends respectively to said front and said rear shield intermediate the ends of said shields;
- expandable and contractable prop means supporting said rocker arm on said sole plate;
- and arm means pivotally connected to the other end of said rear shield and said sole plate.
Dependencies are inferred from the claim text.