. 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 . ing Bracket Lamp, a, thegas-pipe with its stop-cock; b> a brass ball,communicating with the pipe, a ; c, the con-ducting tube, ground air-tight into the ball,b, and communicating with the burner of thelamp, so as to allow it to have an horizontalmotion. Fig. 7. Shews the construction of the


. 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 . ing Bracket Lamp, a, thegas-pipe with its stop-cock; b> a brass ball,communicating with the pipe, a ; c, the con-ducting tube, ground air-tight into the ball,b, and communicating with the burner of thelamp, so as to allow it to have an horizontalmotion. Fig. 7. Shews the construction of the ballQ, and pipe, c, of the lamp, fig. 0. Fig. 8. A Siving CocJcspur Lamp, constructedupon the same plan as fig. 0. These twolamps are very convenient for desks in count-ing-houses, &c. Fig. 9. A stop-cock with ball and socket,which, when adapted to a gas-light pipe, al-lows it to have an universal motion, so thatthe light may be turned in any direction. Fig. 10. Section of the stop-c©ck, with balland socket. Fig. 11. Shows the bait arid socket, fig. 9,in perspective. Plate IV,* fig. 1. A Candelabrum ; the ga^s * The gas-lamps exhibited in this plate, are employedin the library, counting-house, warehouse, and offices ofMr. Ackerman, and, by whose permission, they are copied0J1 this A TREATISE ON GAS-LIGHT. 119 pipe ascending from the floor of the apart-ment, through the column a, and terminatingin the burner of the lamp. Fig. 2. A fancy pendent Cockspur gas being transmitted to the burners, q e,by means of the pipe, a. Fig. 3. A Pedestal Argand Lamp, a, thepipe and stop-cock, which transmits to, andshuts off the gas from the burner of the lamp. Fig. 4. A Pedestal Cockspur Lamp, a, thestop-cock and gas-pipe. Fig. 5. A fancy bracket Cockspur Lamp,intended merely to show that the coal-gas, asIt passes to the burner, is perfectly devoid ofcolour, and invisible,, a is a glass vessel fur-nished at its orifice with a brass cap, c, andperforated ball, out of which


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Keywords: ., bookcentury1800, bookdecade1810, bookidpracti, booksubjectcandles