International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 457
uced at the expenseof the energy used to drive the pump. The form of thevanes is such that the water is delivered at the desiredheight with the least expenditure of energy. The number of vanes depends upon the size and capacityof the pump. It will be noticed that, in the pump shown inthe figure,… … 446 PNEUMATICS. Almost any liquid can be raised with these pumps, butwhen used for pumping chemicals, the casing and vanes aremade of materials that the chemicals Avill not affect. 10H7. The Hydraulic Ram.—The construction of ahydraulic ram is shown in Fig. 213. This machine is usedfor raising…
Railroad engineering
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