CORNISH ENGINE. A single acting beam engine, used for raising water : the steam is worked very expansively, and used for the down-stroke only, to raise an immense weight, fastened to the pump-rod, at the end of the beam : the steam having acted for the down-stroke, and the entrance-valve being closed, a communication is formed between the top and bottom of the cylinder, by lifting a valve in the steam passage, called an equilibrium valve : the pressures on the piston are thus equalized, and the weight acts to force the water up, and raise the piston. from ' Appleton's dictionary of machines, m
CORNISH ENGINE. A single acting beam engine, used for raising water : the steam is worked very expansively, and used for the down-stroke only, to raise an immense weight, fastened to the pump-rod, at the end of the beam : the steam having acted for the down-stroke, and the entrance-valve being closed, a communication is formed between the top and bottom of the cylinder, by lifting a valve in the steam passage, called an equilibrium valve : the pressures on the piston are thus equalized, and the weight acts to force the water up, and raise the piston. from ' Appleton's dictionary of machines, mechanics, engine-work, and engineering ' by D. Appleton and Company Publication date 1874 Publisher New York, D. Appleton,
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