. A practical treatise on gas-light : exhibiting a summary description of the apparatus and machinery best calculated for illuminating streets, houses, and manufactories, with carburetted hydrogen, or coal-gas : with remarks on the utility, safety, and general nature of this new branch of civil economy . lights are wanted. The extremitiesof the pipes have small apertures, out of whichthe gas issues, and the streams of gas beinglighted at those apertures burn with a clear andsteady flame as long as the supply of gas con-tinues. All the pipes which come from thegasometer are furnished at their e
. A practical treatise on gas-light : exhibiting a summary description of the apparatus and machinery best calculated for illuminating streets, houses, and manufactories, with carburetted hydrogen, or coal-gas : with remarks on the utility, safety, and general nature of this new branch of civil economy . lights are wanted. The extremitiesof the pipes have small apertures, out of whichthe gas issues, and the streams of gas beinglighted at those apertures burn with a clear andsteady flame as long as the supply of gas con-tinues. All the pipes which come from thegasometer are furnished at their extremitieswith stop-cocks to regulate the admission ofthe gas. The burners are formed in variousways, either a tube ending with a simple orifice,at which the gas issues in a stream, and if oncelighted will continue to burn with the moststeady and regular light imaginable, as long asthe gas is supplied ; or two concentric tubes ofbrass, or sheet-iron, are placed at a distance ofa small fraction of an inch from each other, andclosed at thebottom. The gas which enters be-tween these cylinders, when lighted, forms anArgand lamp, which is supplied by an internaland external current of air in the usual the two concentric tubes are closed at thetop with a ring having small perforations, out of. A TREATISE ON GAS-LIGHT. 79 which the gas alone can issue, thus formingsmall distinct streams of light. The gas-apparatus, plate 2, will be foundvery convenient for exhibiting, in the smallway, the general nature of this new art ofillumination, whilst at the same time it mayserve to ascertain, at a trifling expence, thecomparative value of different kinds of coals in-tended to be employed for the production ofthis species of light, as well as other occasionalpurposes connected with the gas-light systemof illumination. It consists of three distinct apparatus :*?—namely, a portable furnace, fig. 1, plate 2, bymeans of which the gas is prepared—fig. 2, apurifyer, or condenser, which
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Keywords: ., bookcentury1800, bookdecade1810, bookidpracti, booksubjectcandles
