ure sures greater accuracy, section in Fig. 187; to enable it to withstand the pressure is cheaper, and causes the interior surface of the casting to before entering the fire, which naturally interferes with the of the sand while ramming, we must fill the interior with a be the same as the… … is to prevent it from becoming too low from leakage or out the boiler under a high steam pressure the change is so sudden that it has atendency to contract and cause the boiler evaporation. Incase the water should become dangerously form or block, shown at F, which is to be used in conjunc- toleak.…
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