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Gas Detector
Comparison with Geordie lampThere was some controversy, since George Stephenson also produced a similar safety lamp in 1816 called the Geordie lamp. How far the difference was appreciated at the time is hard to say; supporters of both men seem to have regarded the other as having plagiarised their man's idea and copied it wrongly. The Geordie lamp (with no gauze around the flame) gave a brighter light and was popular with the pitmen. The Davy lamp was simpler and cheaper to make and was popular with the mine owners.[citation needed] There were safety arguments on both sides: in principle, a poorly maintained (or badly designed) Davy lamp could overheat the gauze if it met a high concentration of methane. The gauze rusted very easily in the damp conditons of mines, making the lamp hazardous. A serious objection to the Geordie lamp was that it stopped being a safety lamp if the glass was broken. Both original lamps were faulty, and led to numerous attempts to improve the design, by using multiple gauzes placed above the flame, and with a glass surround to improve illumination. However, they were still poor sources of light, and matters did not improve until the widespread introduction of small electric hand lamps later in the Victorian period. Accident rate
Modern LampsThe modern day equivalent of the Davy lamp is the Protector GR6S Garforth lamp which is used for firedamp testing in all UK coal mines. A modified version of this lamp is used to transport the Olympic Flame for the torch relays. They have recently been used for the Sydney, Athens, and Turin torch relays and will be used for the Special Olympics Beijing relay. The lamps are still made in Eccles, Manchester by Protector Lamp. See also
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