Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 195
y- i88 LOCOMOTIVE ENGINEERIING ment of the Allen balanced valve, its ports and bridgesshould exceed the full travel of the valve by at leastone-eighth of an inch, and the radius of the link shouldalways be as long as permissible to escape an excessiveincrease of lead when cutting off early in the… … Figure 92 Nevertheless gives or appears to give as good adStribution of the steam as either the balancedsi-de valve or the piston valve, while at the same timeits operation is accomplished with a minimum of fric-tion and strain on the valve gear. This is the Youngvalve and gear, the invention of…
Locomotives
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