Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 144
A| Al C 2 I … Below the upper head of the boiler is placed a metallic shield Q Q, leaving an annular steam spacet)f a few inches around it, which will, in a great degree, repress the foaming of the water when thepressure is taken off by the admittance of steam into the cylinder, and will thereby prevent the…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
