Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 29
Fig. 8. and is not enough to cause undue friction. The balance plateis adjustable to allow for wear of the valve, being held in positionby screws which press against the sides of the steam chest andhold it in place. f^///////y/^ /yyy/y^-v^ … Fig. 9. Another kind of valve, commonly used on automatic highspeed engines, is illustrated in Fig. 9. This form of valve ismade in the shape of a spool and is like a slide valve which hasbeen curved into a cylindrical form. Its motion is the same asthat of the plain slide valve. In the valve shown…
Steam-engines
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