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A catechism of the steam engine in its various applications to mines, mills, steam navigation, railways, and agriculture. With practical instructions for the manufacture and management of engines of every class (1864)

Bourne, John · New York, D. Appleton & co. · leaf 241

An illustration from A catechism of the steam engine in its various applications to mines, mills, steam navigation, railways, and agriculture. With practical instructions for the manufacture and management of engines of every class, 1864, leaf 241
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 against the back ofthe valve casing; and should water get into the cylinder, it 224 EQUILIBRIUM GRIDIRON SLIDE VALVES.… … Equilibrium Gridiron Slide Valve.Longitudinal Section. Scale $ 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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