The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 385
al forms of theslide valve, the flat and the piston form, and these are made with agreat variety in detail. Examples of both have been shown in the lastchapter, and a more detailed description will be found in § 42. Anotherdistinction now to be dra^ni, and one having to do rather with thepresent… … s^ s II. Fig. 227. — Direct and Indirect Valves. with the steam in the middle and exhaust past the ends, and withthe laps interchanged accordingly, is called indirect. Another way ofdefining the two types is to say that they have respectively outside andinside admission. And a general distinction,…
Steam-engines · Steam-turbines
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