The Mechanical Engineer's Pocket-book: A Reference Book of Rules, Tables, Data, and Formulae, for the Use of Engineers, Mechanics, and Students |
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The Mechanical Engineer's Pocket-book. A Reference-book of Rules, Tables ... William 1851- Kent No preview available - 2023 |
Common terms and phrases
alloy aluminum amount angle axis carbon cast iron cent centre chord circle circular circular mils circumference coefficient column compression copper cube root cubic feet cubic foot curve cylinder decimal denominator Diam diameter Diff difference differential distance divide divisor draw ductility elastic limit elongation Engineering equal equation exponent factor of safety figures Flange force formula fraction frustum gallons Gauge heat horse-power increase length load logarithm manganese maximum metal modulus moment of inertia multiply perpendicular pipe plate pressure proportional quantity quotient radius radius of gyration ratio Recipro resistance rivets rope side silicon sine specific gravity square foot square inch steam steel strain strands stress subtract surface tangent temperature tensile strength tests thickness thread tons triangle tube velocity volume weight wire wrought iron zinc
Popular passages
Page 766 - The conditions of the boiler and furnace in all respects should be, as nearly as possible, the same at the end as at the beginning of the test. The steam pressure should be the same, the water level the same, the fire upon the grates should be the same in quantity and condition, and the walls, flues, etc., should be of the same temperature.
Page 768 - The analysis of the flue gases is an especially valuable method of determining the relative value of different methods of firing, or of different kinds of furnaces. In making these analyses great care should be taken to procure average samples, since the composition is apt to vary at different points of the flue...
Page 768 - Smoke Observations. — It is desirable to have a uniform system of determining and recording the quantity of smoke produced where bituminous coal is used. The system commonly employed is to express the degree of smokiness by means of percentages dependent upon the judgment of the observer. The committee does not place much value upon...
Page 110 - Troy pound of the Mint. It is of brass of unknown density, and therefore not suitable for a standard of mass. It was derived from the British standard Troy pound of 1758 by direct comparison.
Page 768 - Calorific Tests and Analysis of Coal. — The quality of the fuel should be determined either by heat test or by analysis, or by both. The rational method of determining the total heat of combustion is to burn the sample of coal in an atmosphere of oxygen gas, the coal to be sampled as directed in Article XV of this code.
Page 827 - ... a = area of piston in square inches, n = number of strokes per minute, or twice the number of revolutions per minute.
Page 492 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Page 104 - Measure . . 60 seconds = 1 minute ; 60 minutes = 1 hour ; 24 hours = 1 day ; 7 days = 1 week ; 365 days = 1 year ; 366 days = 1 leap year.
Page 768 - S refer to the proportions of carbon, hydrogen, oxygen, and sulphur, respectively, as determined by the ultimate analysis. It is desirable that a proximate analysis should be made, thereby determining the relative proportions of volatile matter and fixed carbon. These proportions furnish an indication of the leading characteristics of the fuel and serve to fix the class to which it belongs. As an additional indication of the characteristics of the fuel, the specific gravity should be determined....
Page 767 - From this sample two one-quart, air-tight glass preserving jars, or other air-tight vessels which will prevent the escape of moisture from the sample, are to be promptly filled, and these samples are to be kept for subsequent determinations of moisture and of heating value and for chemical analyses. During the process of quartering, when the sample has been reduced to about 100 pounds, a quarter to a half of it may be taken for an approximate determination of moisture.