Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 179
Fig. 98. Types of Slide Valves.—The form of slide valve which has beenillustrated in the previous discussion is known as the plain or DsHde valve, and it has been used in this discussion on account ofits simplicity. This form of valve is widely used on the cheapergrades of slide valve engines; but… … Fig. 99. Drop in pressure during admission is caused by friction ofthe steam rushing past the edges of the valve and through thenarrow port opening and by the comparatively slow motion ofthe valve while it is opening and closing. This objection is notso serious as might be first thought because…
Steam-engines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-166-101.webp)
