National Museum of American History
Miner’s Safety Lamp Patent Model
09-02-1862
This safety lamp is a patent model constructed by Joseph Defossez of Paris, France that received patent number 36,341 on September 2, 1862. In his patent filing, Defossez claimed as his invention “the pneumatic locking device in combination with the oil reservoir, top plate, and chimney” constructed to avoid the risk of mining explosions.
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