Apparatus for wall timbering of drifts, tunnels, and the like

Details Apparatus for wall timbering of drifts, tunnels, and the like Apparatus for wall timbering of drifts, tunnels, and the like

1983-12-28

1985-09-10

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Having transpositioning base and erecting means

182 2, 405303, E21D 1558

Patent

active

045400652

ABSTRACT:
Apparatus mounted on a self-propelled truck, and provided with mechanisms for effectively, smoothly, and safely performing various timbering work in drift and tunnel walls and roofs. The mechanism includes a working platform which is rotatable and kept horizontal for easy conveyance of timbering materials even in a narrow drift and for steady performance of timbering by workers on the platform. Planting of props is readily performed by a device provided to the platform, which grasps a prop, shifts it and erects the prop over a selected pit, and bridging of top beams over capitals of planted props is accurately made by lifting means provided on the working platform.

REFERENCES:
patent: 3091305 (1963-05-01), Pickard
patent: 3356181 (1967-12-01), Granger
patent: 4260297 (1981-04-01), Houston
patent: 4356887 (1982-11-01), Fisher

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