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
Inventor
Hammersley Heenan
William Bardill
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Individual
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Individual
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Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB190402127ApublicationCriticalpatent/GB190402127A/en
2127. Heenan, H., and Bardill, W. Jan. 28. Drilling.-A portable machine, which can also be used as a bench drill, is adjustably secured by a clamping-lever a<1> and a catch a to a light framing A, on which an electric or other motor B is mounted. The spindle is driven by machine-cut worm gearing F, G running in an oil bath J and provided with ball thrust-bearings. The feed is effected by a nut K on a casing E, preferably of aluminium, and provided with a ball thrust-bearing L for the drill-spindle.
GB190402127D1904-01-281904-01-28Improvements in Portable Drilling Machines.
ExpiredGB190402127A
(en)