Steam boiler explosions, in theory and in pactice; . Fig. 57.—Faulty Staying. has been observed that many locomotive boilers stayedas in the figure, * give way at the side, in the mannerhere exhibited. Investigation shows that, in these cases,the tying of the furnace-crowns to the shell by the sys-tem of staying illustrated, and the continual rising andfalling of the furnace relatively to the shell, is very apt tocause a buckling of the outside sheet along the horizontalseam, which finally yields. This buckling and straight-ening of the sheet goes on until a crack or a furrow isformed along th
Steam boiler explosions, in theory and in pactice; . Fig. 57.—Faulty Staying. has been observed that many locomotive boilers stayedas in the figure, * give way at the side, in the mannerhere exhibited. Investigation shows that, in these cases,the tying of the furnace-crowns to the shell by the sys-tem of staying illustrated, and the continual rising andfalling of the furnace relatively to the shell, is very apt tocause a buckling of the outside sheet along the horizontalseam, which finally yields. This buckling and straight-ening of the sheet goes on until a crack or a furrow isformed along the lap nearest the most rigid brace, and,when this has cut deeply enough, the side of the boileropens, often the whole length of the furnace, the ex-plosion doing an amount of damage which is determined * Locomotive, Jan. 1, 1880. 154 STEAM BOILER EXPLOSIONS. by the steam pressure, the quantity of energy stored, andthe extent of the Fig. 58.—Collapsed Flues. In these cases, either the crown-bars over the furnace,or the stays, should alone have been used ; their use to-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectsteambo, bookyear1887
