## The Mechanical Engineer's Pocket-book: A Reference Book of Rules, Tables, Data, and Formulae, for the Use of Engineers, Mechanics, and Students |

### Contents

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### Common terms and phrases

alloy aluminum angle average axis boiler carbon cast iron cent centre chord circle Circular Mils circumference coefficient column compression copper Cube cubic feet cubic foot curve cylinder Diam diameter Diff difference differential distance divide ductility efficiency elastic limit elongation engine equal equation factor of safety feet per second Flange force formula friction frustum gallons Gauge given head heat horse-power increase length load manganese maximum metal modulus moment of inertia multiply perpendicular phosphorus pipe plate pounds per square pressure proportional pump quantity radius radius of gyration ratio resistance rivets root rope side silicon sine specific gravity square foot square inch steam steel strain strands stress surface tangent temperature tensile strength tests thickness thread tons Trans triangle tube velocity volume weight wire wrought iron zinc

### Popular passages

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

Page 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.

Page 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.

Page 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.

Page 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...

Page 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.

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

Page 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...

Page 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.

Page 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.