Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . servoir. Round- Wick Burners.—Burners for kerosene lamps are constructed to carry either flat or roundwicks. In the Argand or round-wick burner, the air to support combustion enters at a perforatedring at the base of the burner, and, passing through the inner tube, supplies the interior of the burners are varied by having the inner tube depressed below the outside tube, the perforationfor air-supply being variously situated, as on the ring surrounding the base of the chimne
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . servoir. Round- Wick Burners.—Burners for kerosene lamps are constructed to carry either flat or roundwicks. In the Argand or round-wick burner, the air to support combustion enters at a perforatedring at the base of the burner, and, passing through the inner tube, supplies the interior of the burners are varied by having the inner tube depressed below the outside tube, the perforationfor air-supply being variously situated, as on the ring surrounding the base of the chimney or throughthe base of the lamp. The light produced by an ordinary-sized burner carrying a round wick can beroughly estimated at 12 candle-power. The chimney carried by these burners is a cylinder con-tracted immediately about the burner. The elevation of the wick is effected by a toothed wheel. Burners requiring no Chimney.—Figs. 2563 and 2564 represent two forms of burners which requireno glass chimney to steady the flame, an ascending air-current which surrounds the flame serving this 2565. 256». purpose. In Fig. 2563 this current passes through perforations, and in Fig. 2564 through slits inthe burner. The use of the chimney is obviated in a different manner by the device shown in Fig. 2565. Herethe shade-holder is made to fit around the cone of the burner, and is attached thereto in the samemanner as a chimney. Upon this the shade is placed, so that the shade and holder really performthe functions of a chimney, inducing a draught of air to the flame. Owing to the large size of thecombustion-chamber thus afforded, it is stated that combustion is more perfectly secured. Mineral- Wick Burners.—In Fig. 2566 the body of the burner is shown with the screw a for attach-ing the burner to the reservoir, and also the air-distributor b in the form of a perforated cap. Thecentral stationary air-tube c is fastened at the lower end to the body of the burner, and openings areprov
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