Davy lamp
Safety lamp that prevents open flames from igniting flammable gases
Davy lamp
The Davy lamp is a safety lamp used in flammable atmospheres, invented in 1815 by Sir Humphry Davy. It consists of a wick lamp with the flame enclosed inside a mesh screen. It was created for use in coal mines, to reduce the danger of explosions due to the presence of methane and other flammable gases, called firedamp or minedamp.
Read on Wikipedia · Image Acme Newspictures (New York City), Public domain
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