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Expired
Application number
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Walter Edward Kimber
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Individual
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Individual
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Publication of GB190608683ApublicationCriticalpatent/GB190608683A/en
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Abstract
8683. Kimber, W. E. April 10. Rock drills.-A bar of steel for drills or bits for rock &c. chiefly of the chisel-bit type is composed of a central strip a of hard steel with a cutting-edge d, which is located between two pieces b, c of softer steel bevelled off at e. [Reference has been directed under Patents Act, 1902, to Specifications No. 354, A.D. 1876, [Abridgment Class Hand tools &c.], and No. 369, A.D. 1876.]
GB190608683D1906-04-101906-04-10Improvements in Steel for the Manufacture of Drills or Bits for Drilling Holes in Rock and the like.
ExpiredGB190608683A
(en)