Steam Boilers: Their History and Development, Giving an Account of the Earliest Known Examples of Steam Generators, Down to the Most Modern Steam Boilers

Forsideomslag
A. Constable, 1905 - 335 sider
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Side 8 - ... within twenty-four hours it burst and made a great crack. So that having a way to make my vessels, so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run...
Side 8 - I have seen the water run like a constant fountain stream forty foot high; one vessel of water rarefied by fire driveth up forty of cold water. And a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and re-fill with cold water, and so successively, the fire being tended and kept constant, which the self-same person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Side 8 - ... hours, it burst and made a great crack. So that, having a way to make my vessels so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run like a constant fountain stream forty feet high.
Side 12 - B, and the water of which boils, and in a very little time it gains more strength than the great boiler; for the force of the great boiler being perpetually spending and going out, and the other winding up, or increasing, it is not long before the force in D exceeds that in L ; so that the water in D, being depressed by its own steam or vapour, must necessarily rise through the pipe H, opening the clack i, and so go through the pipe K into L, running till the surface of the water in D is equal to...
Side 73 - ... by the pressure of the steam, to escape. To keep the interior tubes or vessels in their places, and at equal distances from the outer ones, I put around them spiral bands, extending the whole length of the inner tubes or vessels, or rings at intervals, of from one to two feet apart, or pins of the same thickness as the space intended to be preserved as a water line; these rings are grooved all round, or have holes drilled in them, to permit the free passage of the steam and water; and if the...
Side 12 - ... to obviate this, when it is thought fit by the person tending the engine to replenish the great boiler, which requires an hour and a half, or two hours' time to the sinking of one foot of water, then, I say, by turning the cock E of the small boiler D, you cut off all communication between...
Side 14 - Savery's engine, but / am. well inform' d that Mr. Newcomen was as early in his invention, as Mr. Savery was in his, only the latter being nearer the court, had obtain'd his patent before the other knew of it ; on which account Mr. Newcomen was glad to come in as a partner to it.
Side 9 - Since it is a property of water that a small quantity of it, turned into vapour by heat, has an elastic force like that of air, but upon cold supervening is again resolved into water, so that no trace of the said elastic force remains, I...
Side 48 - ... and then returns under the seventh smaller cylinder, over the sixth, under the fifth, over the fourth, under the third, over the second, and partly over, and partly under the first; when it passes into the chimney. The wall before mentioned which divides the furnace longitudinally, answers the double purpose of lengthening the course which the flame and heated air have to traverse, giving off heat to the boiler in their passage, and of securing from being destroyed by the fire the flanges or...
Side 52 - The principle, then, of this invention consists in forming a boiler by means of a system, or combination of a number of small vessels, instead of using, as in the usual mode, one large one ; the relative strength of the materials of which these vessels are composed increasing in proportion to the diminution of capacity.

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