Locomotive catechism; an up-to-date, practical and complete work on the locomotive--treating on the design, construction, repair and running of all kinds of locomotives .. (1908)
Grimshaw, Robert, 1850- [from old catalog] · New York, The N. W. Henley publishing company · leaf 257
f giving all shades of power from nothingto maximum, in either direction; besides which it must beable to work steam with great economy by expansion, wherethis is required, and wTith great power without regard toeconomy where occasion calls for this. Q. Which of the tzuv classes of valve gears—link… … Fig. 152. Hook Valve Motion. VALVE GEARS. 251 A. As seen in one form in Fig. 152, an arrangement inwhich throwing the lever forward held the backing hook outof reach of the rocker pin and let the forward one drop in.There was a starting bar to move the valve until the hookdropped in, or to enable…
Locomotives
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