The Hughes Brothers of Scranton, Pennsylvania manufactured this Davy style safety lamp in the latter half of the 19th century. Encasing the flame in metal gauze prevented the flame from escaping the lamp and igniting the combustible gases (called firedamp), as would happen with the open flames of carbide or oil-wick lamps. Safety lamps were invented in the early 19th century, and are used to this day for gas detection, even as mine lighting has been replaced by electric lights.
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