Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14473/26A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRANZ BRUNN
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FRANZ BRUNN
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Publication date
Application filed by FRANZ BRUNNfiledCriticalFRANZ BRUNN
Publication of GB253530ApublicationCriticalpatent/GB253530A/en
F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Earth Drilling
(AREA)
Abstract
253,530. Brunn, F. June 10, 1025, [Convention date]. Blasting tampings.-A single iron plug A is inserted in the bottom of a borehole B instead of a number of separate destructible or deformable plugs between the several cartridges C. The iron plug is made with a rounded base to facilitate its insertion and with a tapering front part, resembling a projectile, to distribute the pressure of the explosion. This rod is practically undeformable and can be used over and over again.
GB14473/26A1925-06-101926-06-08An improved method of charging shot holes for blasting coal
ExpiredGB253530A
(en)