136 MODERN STEAM PRACTICE . of the cylinder , so that when one of them is shut the other is open to the indicator , and so on for each end of the cylinder . The examples High - pressure Cylinder . Steanij 54 lbs . Vacuum , 28 ^ inches . Revolutions , 60 . Indicated horse - power , 457 66 H . p .… … Figs . 80 , 81 . — Compound Engine Diagrams . illustrated are taken from combined engines of the vertical type ; the top and bottom of the cylinders are taken in the literal sense , but the IN stroke of all engines — that is , when the crank is moving inwards towards the cylinder — should be termed…
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