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Scientific American, Vol. 58, No. 6 (1888) (1888)
leaf 7
the piston and give the appa- It was not till twenty years ago that the idea occurred ratus an ascensional motion that cannot be controlled of replacing chain or cable traction by direct-acting ap- by the regulating valve, since the latter is arranged for paratus, in which the weight is lifted in… … the weight of the car, a, and of the piston half immersed in water. If the piston rises a certain distance, a meter for example, it willincrease in weight, p, equal to the © 1888 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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