A catechism of the steam engine and its various applications to mines, mills, steam navigation, railways, and agriculture (1876)
Bourne, John, civil engineer. [from old catalog] · New York, D. Appleton and company · leaf 239
fits into anoctagonal recess on the back of the valve. Below each side ofthe octagon there is a bent flat spring, which lifts up the octag-onal plate, and with it the packing ring agamst the back ofthe valve casing; and should water get into the cylinder, it 224 EQUILIBRIUM GEIDIRON SLIDE VALVES.… … Equilibrium Gridiron Slide Valve.Longitudinal Section. Scale f inch = 1 foot. 451. Q,—What species of valve is that shown in. figs. 39and 40 ? A,—It is an equilibrium gridiron valve; so called becauseit lets the steam in and out by more than one port, a a are Fig. 40.
Steam engineering · Steam-engines
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