Coal Miners Light

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The miners discovered that if an individual was brave or stupid enough to go around the workings with a naked flame prior to the miners entering the work area, this individual could seek out the methane and ignite it, making it safer for the other miners. He would then enter the workings and search out accumulations of methane.

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Methane is lighter than air and will accumulate in the roof and to the rise in mines. He would ignite these with his flame a candle on a stick. While this was not a particularly good idea, it was effective up to a point.

Unfortunately, the fireman had, in most cases, no way of knowing how much methane he was igniting other than to estimate how much could accumulate at the roof or void. If his assessment was wrong and he set off a large volume of methane and explosion, he often paid with his life. This situation could not continue - something had to be done.

Coal Mining Lights

The challenge went out to the scientific world to come up with a light that could safely be used underground to provide the miners with light without igniting the methane. There was a period where both the weird and the wonderful were tried to solve the problem. Among the weird was the use of dried fish skins. These produced a very ineffective bioluminescence phosphorescence to provide light for the miners. Possibly just as weird was the use of bottles filled with fireflies.

Charles Spedding came up with the steel mill which consisted of a steel disk, that the miner rotated at high speed.

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The miner would then press a flint against the spinning steel disc producing a stream of sparks which the other miners would work from. As you can imagine, this method supplied the miner with a minimum of light for a lot of effort usually provided by a young boy. Worse than this was that the sparks produced could still ignite methane, as was discovered in with an explosion at Wallsend Colliery. One miner, John Selkirk, was killed, but amazingly, the miner who was operating the Spedding Mill survived and provided the evidence that the ignition source for the methane explosion was the Spedding Mill he was operating at the time.

Mining Lights

William Reid Clanny was the first to come up with a reasonably effective oil lamp. The Clanny lamp used a small glass aperture around the flame with a gauze cylinder above it. Air was blown in by a set of bellows and descended just inside the glass, passing up through the flame in the centre of the lamp.

The gauze was so fine it prevented the flame from passing through and therefore it could not ignite the methane. For his effort he was awarded medals from the Royal Society of Arts. Which one came first has been disputed ever since. George Stephenson was a renowned Civil and Mechanical Engineer. He was famous amongst many things for his involvement in the railways. Due to the fact Stephenson did not have a scientific background many people, Humphrey Davy included, disputed that he could have invented the flame safety lamp.

Stephenson confidently proved the effectiveness of his lamp at Killingworth Colliery December by holding it in front of a methane blower methane under pressure with no ignition of the methane. If he had got his design wrong, what might have happened to the railways?

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Davy had presented information on his lamp to the Royal Society on November 9, All that said, the lamp recognised today is the Davy lamp and the name most closely associated with its invention is that of Sir Humphrey Davy. It was then discovered that the Davy lamp could also be utilised to test for methane in the mine atmosphere. If methane was present in the mine either in accumulations to the rise or in the ventilation general body, the flame of the Davy lamp burned higher with a blue tinge.

Some lamps were equipped with a metal gauge to measure the height of the flame thus giving a percentage of methane present. Mining law was developed to ensure a margin of safety was introduced to protect the miners remember, methane is explosive between five and fifteen percent; above fifteen percent, the methane has displaced oxygen and prevents ignition. In the mids, the oil- wick cap lamp was in use in Scottish mines. These looked like small kettles. The body of the kettle was filled with oil and a wick was pushed into the spout. These lamps had to be an intrinsically safe design applied to electrical equipment and wiring, specifically for hazardous locations such as coal mines.

The technique is based on limiting energy, either electrical or thermal, to a level below that required to ignite a specific hazardous atmospheric mixture. These early lamps were heavy and the illumination produced was poor. Development continued over the next 20 years with little progress. The first battery powered lamp to receive Home Office approval was the one that finished second in this competition. This was the Oldham Type C electric safety lamp. These early electric safety lamps looked, in shape and size, like the original flame safety lamps.

These were hung up and provided illumination all around the workplace. Development of these lamps continued and involved reducing the weight and improving the illumination for the miner. This was a giant leap forward allowing the miner to direct the light from his lamp to where he needed it. This was better for production and more importantly offered a vast improvement in safety.

With Red optical filters,use for Mining,Hunting etc. Red hunting lights are not used just because they look cool.

Northern Light® Mining Cap Lamps

These useful devices wer Super bright light With up 22 hours of continuous illumination and excellent energy saving, it is particula It is suitable for mineral industry,tunnel projects,construction and maintenance for power,communication,highway,and railway at night,night lamp for cutting off rubber plant and absorbing mucus and fo Suitable for coal mining, tapping rubber, outdoor adventure, fishing, hunting, camping, auto repair.

With its long hours of continuous illumination good for people working at night or in the dark. This product is designed for the people who requires to work at night or work in the dark. It is suitable for mineral industry, tunnel projects, construction and maintenance for power, communication, highway, and railway at night, night lamp for cutting It is important to have a head lamp style light when going hunting.

This frees up your hands so you can carry your gun and lead your dogs. The light needs to be powerful enough to easily shine a tree It is suitable for mineral industry, tunnel projects, construction and maintenance for power, communication, highway, and railway at night, night lamp for cutting off rubber plant

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