A Wolf Air-Turbo Blast – Compressed Air Light.
A Wolf Air-Turbo Blast/Compressed Air Light. Made by the Wolf Safety Lamp Company Ltd, Sheffield, England. Made from Coated Brass, Iron and Glass. The thickness of the Glass is 10mm, the weight of the lamp is 15kg. The size is 9″ x 9″ x 9″ inches. It has a hanging hook, a 1″ x 1/2″ inch reducer to connect to an half inch blast – compressed air-bag hose. This lamp has a plate fixed to it stating it was Methane safety tested.
These lights were used in used in the Collieries Haulage Engine houses below ground where there was a supply of blast – compressed air to power them. The blast air entered the lamp and would power a dynamo which produced a current to light the bulb. When the collieries converted to all Electric Haulage Engines these lamps were replaced with modern electric lamps. In Roseheyworth Colliery the old Blast Piston driven Engines were still operational in the 1980s. This lamp was manufactured in 1977.