Model engine construction, with practical instructions to artificers and amateurs (1894)
Alexander, John Henry. [from old catalog] · London, New York, Whittaker · leaf 76
THE BOILERS AND THEIR FITTINGS. 59 The rule, to find what pressure of steam a valvewill hold, is to divide the length of the lever bythe distance from the centre of the valve to thecentre of the fulcrum; multiply by the amount ofthe weight in pounds, and divide by the area of thevalve in inches. To…
Steam-engines · Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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