Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 583
by the valve E, openingthe exhaust port. The return stroke of both pistons is exactly similar to the foregoing,8o that about one-half cylinder full of high-pressure steam (or such otherportion as may be desired), is supplied to the first cylinder at each stroke,and between one-half and two-thirds… … Fiu. 5. For the purpose of enabling the engine to exert an increased power, ifrequired, at the time of starting a train or otherwise, the slide valve /isinserted in the centre passage F to close the communication between thetwo cylinders for a short time when required, and the steam from theboiler…
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