Drill boom arrangement

Details Drill boom arrangement Drill boom arrangement

1975-07-03

1976-11-23

Foss, J. Franklin

Supports

Pipe or cable

Extending through plate

173 43, 248 2, E21C 900, E21C 508, E21C 1100

Patent

active

039932710

ABSTRACT:
A drill boom arrangement for positioning an elongated rock drilling apparatus to different drilling positions with respect to a support. The rock drilling apparatus is carried by a drill boom and the drill boom is mounted on a boom bracket. The boom bracket is slidable relative to the support in the latitudinal direction of the rock drilling apparatus. The boom bracket is moved along guiding means on the support means of a hydraulic cylinder. Means are provided for gearing up the piston stroke of the hydraulic cylinder.

REFERENCES:
patent: 2165404 (1939-07-01), Mitchell
patent: 2704203 (1955-03-01), Feucht
patent: 2718118 (1955-09-01), Benjamin
patent: 2819042 (1958-01-01), Feucht
patent: 3889906 (1975-06-01), Kimber

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