This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1842 Excerpt: ...of the second class are commonly called high-pressure engines. In this case the terms are equally significant: such engines, having no condensing apparatus for the production of a vacuum, are obliged to 'work with steam of higher pressure than that of the atmosphere. Hence it is evident that high-pressure engines, ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1842 Excerpt: ...of the second class are commonly called high-pressure engines. In this case the terms are equally significant: such engines, having no condensing apparatus for the production of a vacuum, are obliged to 'work with steam of higher pressure than that of the atmosphere. Hence it is evident that high-pressure engines, though remarkable for the simplicity of their construction, never turn to account the whole power'of the steam: a portion of this power is necessarily expended in merely balancing the pressure of the atmosphere; and it is the excess of the pressure of the steam above that of the atmosphere which constitutes its power to produce motion. On the other hand, the condenser, the air-pump, the cold water pump, the cold water cistern, &c., are dispensed with; the difficulties attending the injection of condensing water are spared; hence, the high-pressure engine, comprising only a boiler, and a cylinder with its piston and valves, becomes available to purposes, for which its comparatively small size, light form, and simple construction, so admirably adapt it. EABLY LOCOMOTIVE ENGINES. 104. LeupoWs High-Pressure Engine.--The earliest experiment of a high-pressure engine, worked by a cylinder and piston, was made by Leupold in 1720. His engine, and its mode of action, are noticed at page 31; the four-passaged cock is more fully described at p. 117. Nothing can be more simple than this apparatus: a piston is raised by steam of a high pressure; the steam which has performed this office is discharged into the atmosphere; a continuity of effect being desirable in pumping water, two cylinders are so connected that while the steam from one is escaping into the air, and thus producing no effect, it is acting in the other HldH-PBESSUBE ENGINE. 143 cylinder so a...
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Add this copy of A Manual of the Steam Engine to cart. $20.57, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
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New. Trade paperback (US). Glued binding. 320 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Add this copy of A Manual of the Steam Engine to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
