The Engineer's Common-place Book of Practical Reference, Consisting of Practical Rules and Tables Adapted to Land, Marine, and Locomotive Steam-engines

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Simpkin, Marshall and Company, 1839 - Steam-engines - 166 pages
 

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Page 16 - ... waters are those which have iron as an ingredient ; they are known by their peculiar taste, and by their becoming black when mixed with an infusion of nutgalls : but they are of different kinds ; sometimes the iron is combined with sulphuric acid, — more frequently it is in union with carbonic acid. Saline waters are those which contain the saline ingredients generally found in mineral waters, but which have not carbonic acid in excess, and are free from sulphuretted hydrogen and iron, or contain...
Page 38 - The area of the steam passages should be equal to the area of the cylinder, multiplied by the velocity of the piston in feet per minute, and divided by 4800.
Page 44 - Some of the properties of a circle. 1. It is the most capacious of all plane figures, or contains the greatest area within the same perimeter or outline. 2. The areas of circles are to each other as the squares of their diameters, or of their radii. 3. Any circle whose diameter is double that of another, contains four times the area of the other. 4. The area of a circle is equal to the area of a triangle whose base is equal to the circumference, and perpendicular...
Page 97 - Under 2 feet 2 feet . . . 3 feet 4 feet 5 feet 6 feet 7 feet. . 8 feet 9 feet 10 feet...
Page 77 - Multiply the number of horses' power by the multiplier opposite the purpose to which it is to be employed, divide the product by the number of revolutions per minute, and the cube root of the quotient is the shaft's diameter in inches.
Page 15 - The phenomena are different when the hydrogen is previously mixed with a due quantity of atmospheric air. The approach of flame not only sets fire to the gas near it, but the whole is kindled at the same instant ; a flash of light passes through the mixture, followed by a violent explosion. The best proportion for the experiment is two measures of hydrogen, to five or six of air. The explosion is far more violent when pure oxygen is used instead of...
Page 11 - The old ale gallon contained 282 cubic inches ; and The old wine gallon 231. The French litre, or standard measure of capacity for liquids, contains 61.028 cubic inches, or about .453 of our imperial gallon.
Page 11 - Measure. 62.7264 square inches = 1 square link, 10000 „ = 1 „ chain, and 10 square chains = 1 acre. 3. MEASURES OF CAPACITY. General Measure of Solidity. 1728 cubic inches = 1 cubic foot. 27 cubic feet = 1 cubic yard. 42 cubic feet = 1 ton of shipping.
Page 93 - An experiment was made with a weight of 10 tons per inch on hardened steel, which abraded. The remarkable property of steel in hardening, and its power to resist abrasion, render it preferable to every other substance...
Page 52 - The pressure of the steam in a boiler is 30 Ibs. per square inch, the diameter of cylinder 12 inches, length of stroke 3 feet, and the engine making 30 double strokes per minute. Here the area of piston will be 113-097, the velocity of piston = 3 X 30 x .2 = 180 feet per minute, and since 0-9 x 30 — 6 = 21, then, 09 X 30 — 6 X 113-097 X 180 _ 427506-66 _ ~44000...

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