History of Sanitation
Forfatter: J. J. Cosgrove
År: 1910
Forlag: Standard Sanitary Mfg. Co
Sted: Pittsburgh U.S.A
Sider: 124
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HISTORY OF SANITATION
79
injected water as it came out of the induction pipe was
scalding hot, when the water coming from the top of the
piston was but just lukewarm, thought it would be of great
advantage to feed from the induction or injected water,
Section Through the Engine House of the Centre Square Water Works, Philadelphia
and accordingly did it, which gave a stroke or two of
advantage to the engine.”
At about this time or late in 1700, a Frenchman, Mont-
golfer, invented the hydraulic ram. This machine, while
simple in construction, is one of the most efficient water-