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An acetylene gas miner's lamp. A carbide lamp or acetylene gas lamp is a simple lamp that produces and burns acetylene (C 2 H 2), which is created by the reaction of calcium carbide (CaC 2) with water (H 2 O).
This was not resolved until the introduction of electric lighting around 1900, and the introduction of battery-powered helmet lamps in 1930. The poor light provided yet another reason for miners to try to circumvent the locks. The gauze in early lamps (the Davy, Geordie and Clanny) was exposed to air currents.
This enabled the light to pass through and reduced the risk of explosion by stopping the "firedamp" methane gas coming in contact with the flame. [1] 1840 Mathieu Mueseler Exhibited The Museler Lamp in Belgium. [2] 1859 William Clark patented the first electrical mining lamp. [3] 1870s J.B.Marsaut (France) double gauze design [4]
Easily shaped with heat, it is cost-effective to manufacture. In 1952, MSA offered the Shockgard Helmet to protect linemen from electrical shock of up to 10,000 volts. In 1961, MSA released the Topgard Helmet, the first polycarbonate hard hat. 1962 brought the V-Gard Helmet, which today is the most widely used hard hat in the United States.
It consists of a white material (linen) and served in the Middle Ages to protect the miner when descending below ground (unter Tage). Later it was replaced by the miner's hat ( Fahrhut or Schachthut ), from which the leather cap or helmet were developed and subsequently today's mining helmets .
A miner wearing a hard hat with an attached cap lamp. A cap lamp is a lamp worn on the head or helmet. It is mostly used in an underground environment, like mines or during outdoor activities, e.g. climbing.
A flat eave extends outwards from the lower portion of the domed roof forming a narrow "hat brim". A replica of a miner's carbide headlamp is constructed in steel and is attached to the main entrance of the building; the light in the headlamp is operational. The rectangular addition is 20x40 feet with a flat roof; there is a two-bay carport ...
A type of Davy lamp with apertures for gauging flame height. The lamp consists of a wick lamp with the flame enclosed inside a mesh screen. The screen acts as a flame arrestor; air (and any firedamp present) can pass through the mesh freely enough to support combustion, but the holes are too fine to allow a flame to propagate through them and ignite any firedamp outside the mesh.
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