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 258
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 working the… … Fig. 153. Hook Valve Motion. Q. What was the immediate forerunner of the link?A. The combined hook, Fig. 154, being two V hooks joinedat the points. Q. What is its principal disadvantage?A. It could be worked only in full gear.Q. Its advantages? A. Few parts; only one rocker pin for both motions.Q.…
Locomotives
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