The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in the Various Departments of Mathematics and Mechanics; Useful to Millwrights, Engineers, and Artisans in General
Blackie & Son, 1836 - 344 σελίδες
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absciss avoirdupois axis beam body boiler bottom breadth called cast iron centre of gravity chord circle circumference column cube root cubic foot cubic inches cylinder decimal denominator depth difference distance divided divisor draw effect elastic equal Ex.—The feet long feet per second figure fluid force fraction fulcrum gallons give given line greater half heat hence horses inclined plane length lever machine measure mechanic minute motion move multiplied number of teeth ordinate orifice ounces parabola parallel parallelogram pendulum perpendicular pinion pipe piston plane pounds pressure proportion pulley pump quantity of water quars quotient radius rectangle resistance rule shaft side specific gravity square inch square root steam engine stroke surface thickness tons transverse tube valve velocity vessel vibrations vulgar fractions water wheel weight wheel wherefore yard
Σελίδα 4 - Rule. — Multiply the whole number by the denominator of the fraction, add the numerator to the product and place the denominator under the result.
Σελίδα 124 - Powers, are certain simple instruments, commonly employed for raising greater weights, or overcoming greater resistances, than could be effected by the natural strength without them. These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Σελίδα 75 - For the convenience of sliding, there is usually a hole in the middle of the triangle, as may be seen in the figure. 30. By means of these simple instruments many very useful geometrical problems may be performed. Thus, to draw a line through a given point parallel to a given line. Lay the triangle on the paper so that one of its sides will coincide...
Σελίδα 58 - Let ABCD, ABEF, be two parallelograms, and ABC, ABF, two triangles, standing on the same base AB, and between the same parallels AB, DE ; then will the parallelogram ABCD be equal to the parallelogram ABEF, and the triangle ABC equal to the triangle ABF.
Σελίδα 52 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 30 - Reduce the two numbers which have different names from the answer sought, to the lowest denomination named in either of them. II. Set the number which is of the same kind with the answer sought in the third place, and then consider from the nature of the question whether the answer will be greater or less than the third term. ^ III. When the answer is greater than the third term, write the least of the remaining numbers in the first place, but when it is less place the greater there.
Σελίδα 295 - The velocity in feet per minute should be ninety-eight times the square root of the length of the stroke in feet. The area of the steam passages will be as 4800 is to the velocity in feet per minute, so is the area of the cylinder to the area ofthe steam passage.
Σελίδα 60 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
Σελίδα 52 - Equidistant from the centre of a circle, when perpendiculars drawn to them from the centre are equal. 60. And the right line on which the Greater Perpendicular falls, is said to be farther from the centre. 61. An Angle in a segment is that which is contained by two lines, drawn from any point in the arc of the segment, to the two extremities of that arc. 62. An Angle on a segment, or an arc, is that which i...