Hole drilling machine

Tool driving or impacting – With indicating or signaling means

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Details

173 28, 173 43, E21C 1102

Patent

active

040747735

ABSTRACT:
The drlling machine has a bogie accommodated within a gantry frame, the gantry frame carrying the drilling tools and the jacks. In the drilling position and in the gantry position of the machine the gantry frame bears by the jacks upon the ground and with the jacks lifted off the ground the frame bears upon the bogie. The drilling machine has a mechanism for lifting the bogie and a beam with a mechanism effecting displacement of the beam in a direction transverse to the longitudinal geometric axis of the bogie, as well as projectable abutments onto which the gantry frame bears in the transportation position of the drilling machine, the frame having flexible operative connection with the bogie lifting mechanism.

REFERENCES:
patent: 3334849 (1967-08-01), Bronder
patent: 3642075 (1972-02-01), Wills
patent: 3917005 (1975-11-01), Cannon et al.
patent: 3919816 (1975-11-01), Ranft

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