Wolf naphtha safety lamp in section

Lamp made by Ackroyd and Best, Morley, Leeds, part of a group of specimens for a Cunynghame-Cadman fireman's safety lamp

Pair of combustion-tube safety lamps, Hailwood's Twins, by Ackroyd and Best of Leeds

One of two Davy safety lamps

One of two Davy safety lamps

Davy safety lamp with a single gauze cylinder and a straight-sided oil vessel of black-painted white metal, an early type and probably a copy