Davy-Lamp Cloth

This flameproof mesh, which allows free diffusion of air or gas, is used for ventilators where explosive gases are present as well as for miners’ safety lamps. It is used for safety lamps, which were invented/improved by Sir Humphrey Davy in 1815. His light was covered by a tight-fitting cylinder of wire-gauze containing 784 apertures to the sq in.