Safety Lamp

Safety Lamp is the name of a variety of lamps for safety in coal-mines against "fire-damp," a highly explosive mixture of natural gas apt to accumulate in them. The best known being the "Davey Lamp," invented by Sir Humphrey Davy and the "Geordie," invented by George Stephenson, both of which, however, have been superseded by the Gray, Muesler, Marsant, and other lamps. All are constructed on the principle discovered by Davy and Stephenson, that a flame enveloped in wire gauze of a certain fineness does not ignite "fire-damp."

Nearby pages
Saffi, Sagar the island, Sagas, Saghalien, Saguenay, Saguntum, Sahara