Thomas Tredgold

admit a jet of cold water, which condenses the steam in the cylinder, forming a partial vacuum, and the piston descends by the pressure of the atmosphere, raising water by the pump rod H from the mine

from a depth of about twenty feet

against the vessel; and into the partial vacuum made by that means, the water, by the pressure of the atmosphere, was forced up the descending main

One of the steam vessels being filled with steam, condensation was produced by projecting cold water

Engineering is the art of directing the great sources of power in nature for the use and convenience of man.