The Mechanic's, Machinist's, and Engineer's Practical Book of ReferenceW.A. Townsend, 1859 - 517 σελίδες |
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Σελίδα ix
... line , 6. To find the centre of a given circle , 7. To find the length of any given arc of a circle , 8. Through any given point , to draw a tangent to a circle , 9. To draw from or to the circumference of a circle lines tending towards ...
... line , 6. To find the centre of a given circle , 7. To find the length of any given arc of a circle , 8. Through any given point , to draw a tangent to a circle , 9. To draw from or to the circumference of a circle lines tending towards ...
Σελίδα 16
... line , to erect a perpendicular ; or , to make a line at right angles with a given line . On each side of the point ... draw , through the centre of the circle n , the line bnc ; and a line from the point A , cutting the intersections at ...
... line , to erect a perpendicular ; or , to make a line at right angles with a given line . On each side of the point ... draw , through the centre of the circle n , the line bnc ; and a line from the point A , cutting the intersections at ...
Σελίδα 17
... draw lines through where the arcs cut each other ; and the intersection of the lines at s is the centre of the ... line Cb ; and twice the length of the line is the length of the arc nearly . 8. Through any given point , to draw a tan ...
... draw lines through where the arcs cut each other ; and the intersection of the lines at s is the centre of the ... line Cb ; and twice the length of the line is the length of the arc nearly . 8. Through any given point , to draw a tan ...
Σελίδα 18
... Draw the chord A CB ; also draw the line HD I , parallel with the chord , and equal to the height of the segment ; bisect the chord H 2 3 D D 3 2 n 1 3 3 2 A 1 2 3 C3 2 1 B in C , and erect the perpen- dicular CD ; join A Î , DB ; draw ...
... Draw the chord A CB ; also draw the line HD I , parallel with the chord , and equal to the height of the segment ; bisect the chord H 2 3 D D 3 2 n 1 3 3 2 A 1 2 3 C3 2 1 B in C , and erect the perpen- dicular CD ; join A Î , DB ; draw ...
Σελίδα 19
... draw the line lrq ; draw also the line n s D ; bisect & D with a line at right angles , and meeting the line CD in g ; draw the line gq , make CP equal to Ck , and draw the line g Pi ; then from g as a centre , with the radius g D ...
... draw the line lrq ; draw also the line n s D ; bisect & D with a line at right angles , and meeting the line CD in g ; draw the line gq , make CP equal to Ck , and draw the line g Pi ; then from g as a centre , with the radius g D ...
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The Mechanic's, Machinist's, and Engineer's Practical Book of Reference Charles Haslett Περιορισμένη προεπισκόπηση - 2023 |
The Mechanic's, Machinist's, and Engineer's Practical Book of Reference Charles Haslett Περιορισμένη προεπισκόπηση - 2023 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acid antimony beam bisect bismuth body boiling Brass breadth breaking weight cast cast-iron centre chord circle Circum circumference color Copal copper Cube Root cubic feet cubic inches curve decimal DEGREES Diam Dissolve distance draw the line equal EXAMPLE find the area foot force gallons given Gold half heat horse power inches of mercury iron lampblack lead length lever linseed oil Logarithm mastic Melt Metal minute Multiply nitric acid number of revolutions number of teeth oil of turpentine ounces pearlash perpendicular piece pint polygon pounds pressure quotient radius rectified spirit revolutions per minute revolving right angles RULE sal ammoniac shaft side silver solid content solution specific gravity spirit square feet square inch square root steam strength surface TABLE tangent thickness timber tons triangle valve Varnish velocity versed sine vinegar wheel wood zinc
Δημοφιλή αποσπάσματα
Σελίδα 36 - From half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together ; the square root of the product is the area.
Σελίδα 40 - Case 1. — When the fulcrum of the lever is between the power and the weight. RULE. — Divide the weight to be raised by the power to be applied ; the quotient will give the difference of leverage necessary to support the weight in equilibrio. Hence, a small addition either of leverage or weight will cause the power to preponderate. EXAMPLE 1. — A ball weighing 3 tons, is to be raised by 4 men, who can exert a force of 12 cwt.: required the proportionate length of lever ? 60 3 tons = 60 cwt.;...
Σελίδα 27 - Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles.
Σελίδα 11 - Pyramid, RULE. — Multiply the sum of the perimeters of the two ends by the slant height, and...
Σελίδα 12 - To find the solidity of a wedge. RULE. To the length of the edge add twice the length of the base ; multiply that sum by the height, and by the breadth of the base, and one-sixth of the product will be the solidity.
Σελίδα 152 - Is that point into which, if the whole mass were collected, a given force, applied at a given distance, would produce the same angular velocity in the same time as if the bodies were disposed at their respective distances. This point differs from the Centre of Oscillation only in this, that, in the latter case, the motion is produced by the gravity of | the body; but, in the former, the body is put in motion by some | other force, acting at one place only.
Σελίδα 32 - NOTE. — 1. As 7 is to 22, so is the diameter to the circumference; or, as 22 is to 7, so is the circumference to the diameter.
Σελίδα 69 - Take two ounces of tripoli powdered, put it into an earthen pot, with just enough water to cover it ; then take a piece of white flannel, lay it over a piece of cork or rubber, and proceed to polish the varnish, always wetting it with the tripoli and water. It will be known when the process is finished by wiping a part of the work with a sponge, and observing whether there is a fair even gloss.
Σελίδα 324 - The rubber is then to be enclosed in a soft linen cloth, doubled, the rest of the cloth being gathered up at the back of the rubber to form a handle. Moisten the face of the linen with a little raw linseed oil, applied with the finger to the middle of it.
Σελίδα 16 - ... being decimally reckoned, advance tenfold from the commencement to the termination of each radius : thus, suppose 1 at the joint be one, the 1 in the middle of the rule is ten, and 1 at the end one hundred : again, suppose 1 at the joint ten, 1 in the middle is 100, and 1 or 10 at the end is 1000, &c., the intermediate divisions on which complete the whole system of its notation. TO MULTIPLY NUMBERS BY THE RULE. Set 1 on B opposite to the multiplier on A; and against the number to be multiplied...