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 590
Fig. 1557 represents the piston often used for cylindrical slide-valves. By raising or lowering the§crew, if will be evident that the rings are compressed or expanded. A flat place is of course cast inthe huriv of the piston to leave room for the bridle. … r /: r~ Scale.—.. inch=l fuut. In the pistons of oscillating engines, it is necessary to take precautions against any compression ol thepacking-ring by the weight of the piston during the inclination of the cylinder. The method pursued byMessrs. Fenn is to pack the space between the metallic ring…
Mechanical engineering · Mechanics · Engineering
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