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 93
so as to keep up the most intense flame for any length of time. A valve is placedbetween the gasometer and the transferring bladder, which prevents the return of the gas. 11 is alight wooden or stiff pasteboard cap, which combines sufficient strength with great lightness, so that inease an… … email wires which pass through the table of the instrument, as at L, into tne press-board below, wherethey are seemed; tins press-board is kept in a horizontal position by the stand, so that when the re-quisite pressure is given to it, the cap 11 is brought to bear equally on the gasometer D. The…
Mechanical engineering · Mechanics · Engineering
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