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 … Steanij 54 lbs . Vacuum , 28 ^ inches . Revolutions , 60 . Indicated horse - power , 457 66 H . p . cylinder . Do . do . 713 - 75 l . p . „ II 7 I 4 1 Low - pressure Cylinder . Figs . 80 , 81 . — Compound Engine Diagrams . illustrated are taken from combined engines of the vertical type ; the top…
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