Oil, Gas, and Incandescent Lighting.

Progress, Volume I, Issue 8, 1 June 1906, Page 199

Oil, Gas, and Incandescent Lighting.

The form of gas production by oil or water is still popular. The plant required for the bracket and hanging lamp consists of three distinct parts — the lamp, the tank, and the tubing The tank,

\vh eh is made m four sizes, is fitted with a glass gauge to show the quantity of oil in the tank , a pressure gauge ; a check valve ; and an oil and air pump are supplied. The lamp is fitted with vaporising tube, single burner glass globe, and needling arrangement. The tubing is made of drawn bronze connected to the lamp and tank by means of brass couplings. The tank, having been placed m any convenient position, is filled onethird full of special incandescent petroleum by means ot the pump supplied. Air is then forced into it by the same means until the gauge shows a pressure of 60 Ib. to the square inch. This pressure is controlled by a valve placed lmmedilatey It low the pressure gauge, which, when opened

allows the oil to flow into the tubing attached to it, by which it is conveyed into the vaporising tube m the lamp. The vertical vaporising tube having been previously heated by means of an ordinary gas Bunsen, electric arrangement, or ordinary blow lamp (any of which can be supplied with the lamp), the oil, in passing through it, is vaporised, and the vapour is ejected through a small aperture at the end of tube with sufficient force to draw m the amount of air required to support combustion. It then passes through the burner to the mantle, where the gas is ignited by the flame heating the vapour tube, The burner

is so constructed that part of the oil gas is deflected downwards, and, burning around the vapour tube end, keeps the latter hot, so that the original means of heating can be shut off as soon as the flame appears m the mantle. An incandescent mantle placed over a Bunsrn burner supplied with ordinary coal or water gas will produce a light from 60 c.p. to 75 c.p., varying according to the quality and pressure of gas, while the same mantle, placed on the U.K. lamp, yields, by actual test, a light of from 400 cp. to 500 c.p. This lamp gives a light equal to any electric arc, is much softer and more diffusive, and does not produce that flickering so objectionable m the latter. Under the light produced by the U.K. lamp, colours are as easily distinguished as by daylight ; in fact, it more closely resembles sunlight than does any other artificial lllummant — so closely, in. fact, that photographs have been taken by its rays with complete success.