All coal miners lamps in the UK were required to have magnetic locks so they could not be opened underground. Miners lamp magnetic lock parts.
The fuel filler flap sold here when closed locks against the standard wires so the lamp cannot be opened. The flap comes with a fixing rivet. This part is common to the majority of Protector Lamp’s with a lock.
The product gallery images show the magnetic lock, there is also the lead lock which does not need a magnet to open it. These were used for presentation lamps and in some coal mines in Australia. A piece of lead wire would be crimped into the hole in the flap in the Lamp Room before going underground.
The lock is in a brass casting on the side of the fuel vessel. The bung fits into a threaded hole at the base of the lock body and it retains the spring and the locking pin sold here. When fitted by us to a lamp the slot on the head is removed so it cannot be unscrewed. These are often drilled out to remove the locking pin. The magnets we sell are placed on the base of the lock body and pull down the spring and pin allowing the fuel filler flap/locking plate to be opened.
The miners lamp vessel or base is the fuel tank. The tank has felt pads to absorb the fuel, the Victorian version of explosafe material in racing car and bike fuel tanks. The vessel incorporates the magnetic lock mechanism and the wick regulator for raising and lowering the flame.