Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 196
the Allen ports. To be sure of getting the very best results from the LOCOMOTIVE APPLIANCES. 187 use of the balanced Allen valve, the ports and bridgesshould exceed the full travel of the valve by at leastone-eighth of an inch. The radius of the link shouldalways be as long as permissible, to avoid… … Fig. 1. The American Balance Valve. Single Disc Longitudinal Section. steam chest. Experience proves this balance to bea very successful form of balance valves. This isdue to the simplicity of construction, positive actionand very large area of balance. The beveled ringis self-adjusting—no springs…
Locomotives
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