The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 408
ear the § 41 (d)] THE DOUBLE-VALVE GEAR. 393 middle of its stroke; consequently, the cut-off valve must have a smalllap if it is. to be in rapid motion when closing its port. Very often thelap is negative, or the valve does not cover the ports when in mid-position, as is the case in Fig. 252. (e)… … Effect of Varying the Lap. type (the simple eccentric diagram of Figs. 220 and 221), we emphasizethe fact that the important result sought in any determination of valvemotion is the movement of the valve edge with reference to the portedge, rather than of the center of valve with reference to…
Steam-engines · Steam-turbines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
