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This is a stem about 21/2 feet long, having at its front end a diaphragm made of wings which can fold on each other, and thus enable it to pass an obstruction it cannot remove; this machine carries a set of steel scrapers, somewhat like those used in cleaning boilers.
To effect this result requires the aid of nine steam boilers, three steam engines, a vacuum pan, three large evaporators, five clarifiers, five filters, an immense sirup tank, the juice box, mill, bagasse furnace, and fifteen coolers. "With the engineers, sugar makers, firemen, and laborers, thirty-eight persons are constantly on duty in this sugar-house.
The weighted phial is first to be floated in fresh water, and its line of floatation marked; then to be floated in salt water, and its line of floatation marked; and another mark of an equal height above the salt water mark will be the blow off point. Q. HOW often should boilers be blown off in order to keep them free from incrustation?
There were, for instance, twenty-four double end and five single end boilers, each 16 feet 9 inches in diameter, the larger 20 feet long and the smaller 11 feet 9 inches long. The larger boilers had six fires under each of them and the smaller three furnaces.
And what to do under the circumstances called for most difficult decisions. If the fires were let out it meant a dead loss of two tons of coal when the boilers were again heated. But these two tons only covered a day under banked fires, so that for anything longer than twenty-four hours it was a saving to put out the fires.
Before the country was divided into moors and forests, tenanted by makers of patent corkscrews, and boilers of patent soap, before the rivers were distributed into beats, marked off by white and red posts, there lived over to the south, under the mountains, a sportsman of athletic frame and adventurous disposition. His name I have forgotten, but we may call him Dick Lindsay.
On such a spot, and under such circumstances, the most elegant mansion, the most sumptuous monument, the finest statue, would have awakened less reflection than those colossal boilers. If the properties of steam are present to your mind, you will perceive at a glance that the economic working of Newcomen's engine seems to require two irreconcilable conditions.
The first steam vessel to be built on the shore of the North Pacific Ocean was constructed at Sitka, for, before 1840 the whole of the machinery for a tug of seven horsepower, as well as of two pleasure boats had been constructed here. The steamer "Nikolai" of 70 horsepower was built and equipped with the exception of the boilers which were brought from New York.
There are the two parrot-threats of love, on which our loving centuries have run as on a pair of railway-lines. Excuse me if I want to get out of the train. Excuse me if I can't get up any love-steam any more. My boilers are burst. We have made a mistake, laying down love like the permanent way of a great emotional transport system.
They were under fire for more than two hours and every vessel was struck many times, but with little damage to the gunboats. The transports did not fare so well. The Henry Clay was disabled and deserted by her crew. Soon after a shell burst in the cotton packed about the boilers, set the vessel on fire and burned her to the water's edge.
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