Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 598
Scale.—i inch=l foot. Fig. 1557 represents the piston often used for cylindrical slide-valves. By raising or lowering thescrew, it will be evident that the rings are compressed or expanded. A flat place is of course cast inthe body of the piston to leave room for the bridle. 1554.
Mechanical engineering
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