Appletons' cyclopædia of technical drawing : embracing the principles of construction as applied to practical design ... (1896)
Worthen, W. E. (William Ezra), 1819-1897 · New York : D. Appleton · leaf 387
372 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. can be so nicely adjusted that the valve works freely and perfectly steam-tight.When the pressure is greater in the cylinder than in the chest, the pressure-plate is forced back, to the instant relief of the cylinder. Cylindrical Valves.—Fig. 845… … FIG. 845. chest S is central and incloses the valve ; the exhaust chambers E E are at theends of the valve, and are connected through the hollow stem or body of thevalve. The valve depends on its accuracy of fit for its tightness. The valve-chamber is bored out and ground, the valve is turned,…
Mechanical drawing
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