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Franz Volpert
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Individual
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Individual
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Publication of GB189710102ApublicationCriticalpatent/GB189710102A/en
10,102. Volpert, F. April 22. Blasting.-Relates to means for cleaning boreholes before blasting. The dust is removed by a brush or the like, such as a circular brush confined by a sleeve, as shown. Springs, air pressure, or other means may be used to expand the brush after it is introduced into the holes, or a hollow body of rubber &c. may be expanded by air when in the hole and then drawn out.
GB189710102D1897-04-221897-04-22Improvements in the Process and Tools for Clearing Bore Holes of Bore Dust in Blasting Rock and the like.
ExpiredGB189710102A
(en)