Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 238
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.… … 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…
Mechanical engineering -- Dictionaries
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