Creighton, William Henry Paul, 1859- · New York, J. Wiley & sons · leaf 372
valves. The valve is balanced by working it betweenparallel scraped plates (Fig. 183), so that the steam does not getto the back of the valve. In pis ton-valves (Fig. 182) the pressuredue to the steam is balanced, leaving the friction of the packingrings to be provided for. The travel of the valve… … 352 THE STEAM-ENGINE AND OTHER HEAT-MOTOR^. length of eccentric or swinging arm, 14 in.; its center is on the line ofcenters of shaft and crank-pin when the latter is on a dead-center. Ex. 121. Width of port, If in.; length, 8 in.; 9XlO engine;300 revolutions; steam-lap, 1 in.; exhaust-lap, 5/16…
Steam-engines · Heat-engines
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