Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : A. Miller · leaf 79
When the water has been forced into this vessel till it risesabove 0, the lower end of the pipe, the air which lies betweenthe surface of the water in the vessel and the top of the vesselis suddenly condensed at each stroke of the piston, and by itsreaction on the water forces it through the pipe… … This machine consists of a double forcings-pump, botl.imps coninmuiciiting v.itJi the same air-vessel M. The pipe T descends into a reservoir of water. The valves opening upwards are at F, V and R, R. F\f>, a fixed beam round wliich the pistcn-rods work. The water is discharged tliruugh the pipe…
Hydrostatics
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