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Expired
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Charles Christiansen
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Individual
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Individual
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Publication of GB190805388ApublicationCriticalpatent/GB190805388A/en
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Abstract
5388. Christiansen, C. March 10. Rock drills. - A support for a hand pneumatic-hammer rock drill comprises a guiding-bar b slidably mounted on a supporting bar or column e by means of a double-jointed clamp. A cradle a adapted to slide on the bar b may be provided, or the drill casing may slide directly on the bar. In a modification, the guiding-bar b is supported on four legs, which pass through pivoted sleeves attached to the bar.
GB190805388D1908-03-101908-03-10Improvements relating to Pneumatic Hand Rock Drills.
ExpiredGB190805388A
(en)