Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives (1916)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co., pub. for Sears, Roebuck & co. · leaf 189
oy- i88 LOCOMOTIVE ENGINEERING 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… … iwvertheless gives or appears to give as good adistribution of the steam as either the balancedsi de valve or the piston valve, while at the same timeit^ operation is accomplished with a minimum of fric-tion and strain on the valve gear. This is the Youngvalve and gear, the invention of Mr. O. W.…
Locomotives
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