Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 181
contracted aperture a, shall be bare |th of an inch above the top of the wick-holder. This relative posi-tion is observed in all the burners. This form of cone box was found very inconvenient, by becomingexceedingly hot and throwing a considerable shadow, it was consequently soon superseded by…
Mechanical engineering · Mechanics · Engineering
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