Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 108
iointe ar. both seen At u is a trundle-valve of sheet-iron, elliptical in shape, with alternately bevellededges, and worked by the winch above. When this winch is parallel with the axis of the pipe, thevalve presents nothing but its thickness to the blast; when it is at right angles to the axis, it…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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