Skip to content

Please be aware that some material may contain words, descriptions or illustrations which will not reflect current scientific understanding and may be considered in today's context inaccurate, unethical, offensive or distressing.

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

Use this record

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

Embed this record

<iframe src="https://makingscience.royalsociety.org/embed/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" title="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" allow="fullscreen" frameborder="0" width="100%" height="500px"></iframe>

Hierarchy

This item is part of:

Related Fellows

Explore the collection

  • 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