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Herbert Sefton-Jones
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Investigating Or Analyzing Materials By The Use Of Electric Means
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Abstract
18,060. Jones, H. Sefton-, [Hartmann & Braun Akt.-Ges., and Della Santa, E. A.]. Aug. 8. Gas lamps.-A lamp to give a steady flame, to be used in apparatus for detecting the presence of inflammable gases &c. in mines, has a reservoir 18 with a weighted piston 19 acting to give a constant and even supply. Specification No. 10,342, A.D. 1907, [Abridgment Class Mining &c.], is referred to.
GB190718060D1907-08-081907-08-08Improvements in Apparatus for Measuring Dangerous or Obnoxious Gases in Mines and the like.
ExpiredGB190718060A
(en)