Locomotive engine running and management : a treatise on locomotive engines, showing their performance in running different kinds of trains with economy and dispatch; also directions regarding the care, management, and repairs of locomotives and all their connections (1888)
Sinclair, Angus, 1841-1919 · New York : J. Wiley · leaf 231
ap. It was not till Colburn applied the indicator tothe locomotive, that the true cause of economy wasdemonstrated to be in the additional work taken fromthe steam by using it expansively. THE ALLEN VALVE. An improvement on the plain D slide-valve has beeneffected in a simple and ingenious manner… … above the exhaust cavity. The valve and seat are soarranged, that, so soon as the outside edge of the valvebegins to uncover the steam-port at B, the supplemen-tary passage begins receiving steam at C; and this givesa double opening for the admission of steam to the portwhen the travel is short. As…
Locomotives
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