Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 927
4166 … tP^i_4 seating. The India-rubber, being flexible, lifts easily from the grating when any fluid pressure isapplied beneath it, and closes again readily and without violent shock when the reflux begins. Toprevent the India-rubber rising too high, a perforated guard-plate is placed over the valve. A…
Mechanical engineering -- Dictionaries
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
