Davy lamp

John DaviesKirkby in Cleveland, North Yorkshire • The container of the Olympic flame flown into the UK is actually a Davy lamp, invented by Sir Humphry Davy 200 years ago to prevent explosions in coalmines.

There was a high percentage of fire-damp, too, as constant little explosions in their Davy lamps informed them.

Explain to colliers principle of the Davy lamp.

He thought perhaps the butty would let him go down with his Davy lamp.

Men were much more careless in the handling of naked lights than they are now, and the beneficent gift of the Davy lamp was looked on with mistrust.