flame-capn. a pale cap-like appearance which the upper part of the flame of a safety-lamp or fire-damp indicator assumes, and which indicates the presence of gas.
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the world > matter > light > artificial light > an artificial light > [noun] > lamp > parts of
sink1440
snuff1611
turret1626
discus1680
oxidator1853
chimney1857
flame-cap1893
heat filter1898
bracket-light-
1893 Dublin Rev. July 653 The wick of the lamp has to be pulled down until the flame becomes pale and non-luminous. In this condition it is small and of low temperature, and therefore ill-suited to produce flame caps.