## 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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### Contenido

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### Otras ediciones - Ver todas

### Términos y frases comunes

allowed amount angle average axis base body boiler calculated capacity carbon cast cent centre circle coal coefficient column compression constant containing copper cubic feet cylinder determined diam diameter distance divide effect efficiency elastic engine equal evaporation expansion experiments feet figures flow foot force formula given gives greater half head heat horse-power hour increase iron length less limit load loss material maximum mean measured metal minute multiply obtained ordinary pipe plate pounds practice pressure proportion quantity radius ratio reduced resistance rivets root rope rule says side specific square inch steam steel strain strength stress stroke surface taken temperature tensile strength tests thickness Trans tubes units varies velocity volume weight wire

### Pasajes populares

Página 20 - OF TIME. 60 Seconds = 1 Minute 60 Minutes = 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...

Página 2 - To change a mixed number to an Improper fraction.— Multiply the whole number by the denominator of the fraction; to the product add the numerator; place the sum over the denominator: 1% = 15/8.

Página 68 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.

Página 34 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient. Multiply the whole divisor by the first term of the quotient, and subtract the product from the dividend.

Página 691 - See that the boiler is thoroughly heated before the trial to its usual working temperature. If the boiler is new and of a form provided with a brick setting, it should be in regular use at least a week before the trial, so as to dry and heat the walls. If it has been laid off and become cold, it should be worked before the trial until the walls are well heated. VII. The boiler and connections should be proved to be free from leaks before beginning a test, and all water connections, including- blow...

Página 692 - The boiler being thoroughly heated by a preliminary run, the fires are to be burned low and well cleaned. Note the amount of coal left on the grate as nearly as it can be estimated; note the pressure of steam and the water level.

Página 479 - Avogadro's hypothesis that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules...

Página 694 - 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. The chemical analysis of the coal should be made only by an expert chemist. The total heat of combustion computed from the results of the ultimate analysis...

Página 692 - The water-level should be as nearly as possible the same as at the beginning of the test. If it is not the same, a correction should be made by computation, and not by operating pump after test is completed.

Página 398 - For the purposes of this specification, the yield point shall be determined by the careful observation of the drop of the beam or halt in the gauge of the testing machine.