Paper, 'A new portable miner's safety-lamp, with hydrogen attachment for delicate gas-testing; with exact measurements of flame-cap indications furnished by this and other testing lamps' by Frank Clowes
Reference number: PP/20/28
Date: 1893

Description
Clowes writes: 'The presence of firedamp is still almost invariably detected, and its amount is more or less accurately measured, by the observation of the pale blue “cap” produced by the “gas” over the flame of the safety-lamp. By suitably reducing the flame of an ordinary oil safety-lamp by drawing down the wick, it is generally considered that percentages of gas in the air varying from about 2.5 to 6 can be detected and estimated.'
Annotations in pencil and ink. Includes two pages of diagrams and photographs of experimental apparatus and results.
Subject: Scientific apparatus and instruments
Received 10 January 1893 / 12 January 1893. Read 2 February 1893. Communicated by [Henry Edward] Armstrong.
A version of this paper was published in volume 52 of the Proceedings of the Royal Society as 'A new portable miner's safety-lamp, with hydrogen attachment for delicate gas-testing; with exact measurements of flame-cap indications furnished by this and other testing lamps'.
- Reference number
- PP/20/28
- Earliest possible date
- 1893
- Physical description
- Ink and graphite pencil on paper
- Page extent
- 18 pages
- Format
- Manuscript
Diagram
Creator name
Frank Clowes
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Citation
Frank Clowes, Paper, 'A new portable miner's safety-lamp, with hydrogen attachment for delicate gas-testing; with exact measurements of flame-cap indications furnished by this and other testing lamps' by Frank Clowes, 1893, PP/20/28, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pp_20_28/paper-a-new-portable-miners-safety-lamp-with-hydrogen-attachment-for-delicate-gas-testing-with-exact-measurements-of-flame-cap-indications-furnished-by-this-and-other-testing-lamps-by-frank-clowes, accessed on 11 February 2025
Link to this record
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Related Publications
Hierarchy
This item is part of:
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Scientific papers published in the Proceedings of the Royal Society volume 52, 1893
1892-1893 Reference number: PP/20
Related Fellows
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Henry Edward Armstrong
Communicator
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Proceedings Papers
Dates: 1882 - 1894
The archival collection known as 'Proceedings Papers' is comprised of manuscripts and occasional proofs of scientific papers sent to the Royal Society which were read before meetings of Fellows and printed in full in the Proceedings of the Royal Society.View collection