Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 783
of water contained in the tank, plus the pressure in the gasometers) will pass, and bubble uj-through the lime-water. E is an arm made to revolve on the spindle S: the parts ee of this arm continue through the ape.-ture and over the ring, serving to keep the lime from settling or obstructing the… … 1935. 1934i
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.