International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 448
drawn through the grate. 436 PNEUMATICS. PUMPS. 1078. The Suction Pump.—A section of an ordi-nary suction pump is shown in Fig. 205. Suppose the pistonto be at the bottom of the cylinder and to be just on thepoint of moving upwards in the direction of the arrow. Asthe piston rises it leaves a… … Fig. 205. the pipe and lifts the valve V, filling the empty space in thecylinder B displaced by the piston. When the piston hasreached the end of its stroke, the water entirely fills thespace between the bottom of the piston and the bottom ofthe cylinder and also the pipe P. The instant that the…
Railroad engineering
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