A Treatise on the Steam Engine; Historical, Practical, and Descriptive Volume 2

A Treatise on the Steam Engine; Historical, Practical, and Descriptive Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1827 edition. Excerpt: ...raised up, by the action of its weight, when the valve is to be opened. The middle handle s, for the right hand, is called the exhausting handle; it is also pressed down by the plug, to close the valve; and it is raised up, by the weight so as to open the valve. The lower handle 3, for the left hand, is called the equilibrium handle; it is lifted up by the plug, to close the valve; and is thrown down by the weight in order to open the valve. The injection-valve j is opened by a strap, which wraps round the middle axis u, and the strap has a wire descending from it to the valve; therefore, when the exhausting handle s rises up suddenly by its weight, and opens the exhausting valve i, the strap is wound up, and opens the injection-valve g also. The injection-valve j is adapted t close the orifice at the end of a short pipe, which enters into the condenser and turns up; and the pipe has a cock in it, between the valve and the condenser, in order to cut off the communication occasionally, and to regulate the supply of injection whilst the valve is open, during the working stroke. This cock is always open when the engine is in action, but it must be shut when the engine ceases to work, to prevent the condenser filling with water. Operation Of Mr..watt's Single Engine. Preparation. In the quiescent position of the engine, when it is at rest, the preponderance of the pump-rod M, or counter-weight, always draws the piston up to the top of its cylinder, as in the figure; the air-pump bucket being also at the top of its barrel: and all the valves shut. Suppose the fire to be lighted at A beneath the boiler C, and that all the valves b, e, /, andj are shut, by pressing down the two upper handles r and s, and lifting up the lower one 3; their...
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Product details

  • Paperback | 472 pages
  • 189 x 246 x 24mm | 835g
  • United States
  • English
  • black & white illustrations
  • 1236833821
  • 9781236833822