Comparative tests of Illinois Central Railroad locomotives No. 920 and No. 940 (1909)
Gibson, Miles Otto, Lorenz, Frederick Ayres · leaf 32
se supplementary valves such a movement as willmake them open simultaneously with the exhaust edge of the mainvalve, but will retard their closing until the main valve has movedabout 1-1/4 inches over the exhaust port, thus giving over 23 squareinches exhaust opening after the exhaust closure of… … that the construction gives a very light weight valve, with liberalhearing area and perfect balance. The construction is such that everat the shortest cutoff, one portion of the hearing surface of thevalve always laps the travel of another portion on the valve seat.Experience with this type of main…
Illinois Central Railroad Company · Locomotives · Theses
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