Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ion of the shaft, thevalves arc reversed by the eccentric. 351. Figure 41.—Steam-boiler and operation of steam-valves.—Boilers are made of heavy plate-iron, firmly riveted together,provided with suitable means for heating them, to produce steam.They are partly filled with water, the balance of the… … boiler. As the water, W, should be kept about on a level with themiddle faucet, if the vpper faucet be opened there should escape fromit only denm.; but if water should escape, it shows there is too muchwater in the boiler. If mingled water and steam escape fiom themiddle faucet it shows the boiler…
Physics · Astronomy
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