The Mechanic's, Machinist's, and Engineer's Practical Book of Reference: Containing Tables and Formulæ for Use in ... Mensuration ... Together with the Engineer's Field Book ...J.G. Gregor, 1855 - 504 σελίδες |
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Σελίδα ix
... angle , • 5. To find the centre of a circle , or radius , that shall cut any three given points , not in a direct 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 ...
... angle , • 5. To find the centre of a circle , or radius , that shall cut any three given points , not in a direct 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 ...
Σελίδα 28
... This " These 13 " 39 " ( tha до also ' escribe an elliptic arch , the width and rise of span being 1 . ha line at right angles the chord or span AB ; erect the perpendicular A q , and draw the line qD 18 PRACTICAL GEOMETRY .
... This " These 13 " 39 " ( tha до also ' escribe an elliptic arch , the width and rise of span being 1 . ha line at right angles the chord or span AB ; erect the perpendicular A q , and draw the line qD 18 PRACTICAL GEOMETRY .
Σελίδα 29
... angles , and meeting the line CD in g ; draw the line gq , make CP equal to Ck , and draw the line gPi ; then from g as a centre , with the radius g D , describe the are s Di ; and from k and P as centres , with the ra- S АК 3 C P B ...
... angles , and meeting the line CD in g ; draw the line gq , make CP equal to Ck , and draw the line gPi ; then from g as a centre , with the radius g D , describe the are s Di ; and from k and P as centres , with the ra- S АК 3 C P B ...
Σελίδα 30
... angle to the line A B ; bisect the line Dd , through which draw the line B b , making cb equal to Be ; draw the line db a a ; also through c , in the direction c A , draw the line ac A , in- tersecting the line dba ; then ba equal B A ...
... angle to the line A B ; bisect the line Dd , through which draw the line B b , making cb equal to Be ; draw the line db a a ; also through c , in the direction c A , draw the line ac A , in- tersecting the line dba ; then ba equal B A ...
Σελίδα 31
... angle of eccentric rod , and tras AAN vel of the valve , being given . A if 2 b A B E C Draw the right line A B , as the situation of the crank at com- mencement of the stroke ; draw also the line Cd , as the proper given angle of ...
... angle of eccentric rod , and tras AAN vel of the valve , being given . A if 2 b A B E C Draw the right line A B , as the situation of the crank at com- mencement of the stroke ; draw also the line Cd , as the proper given angle of ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acid angle antimony applied beam beeswax bismuth body boil borax Brass breadth breaking weight cast cast-iron Cement centre chord circle Circum circumference color Copal copper Cube Root curve decimal deflexion Diam diameter in inches dissolved distance equal EXAMPLE foot force Fuse gallon given glass glue Gold heat horse power iron Ivory lampblack lead length lever linseed oil Logarithm mastic Melt mercury Metal minute Multiply muriatic nitric acid number of revolutions number of teeth oil of turpentine ounces pearlash perpendicular piece pint plate pounds pressure quantity quotient radius rectified spirit resin RULE sal ammoniac shaft silver solid content solution specific gravity spirit of wine square inches Square Root steam strength sulphate surface TABLE tangent temperature thickness tons tube units of strain valve Varnish velocity vessel vinegar wheel wood zinc zine
Δημοφιλή αποσπάσματα
Σελίδα 235 - SOLDERS. For Lead, melt 1 part of Block tin ; and when in a state of fusion, add 2 parts of Lead. Resin should be used with this solder. For Tin, Pewter 4 parts, Tin I, and Bismuth 1 ; melt them together.
Σελίδα 53 - Multiply the weight of the several particles by the squares of their distances from the centre of motion, and divide the sum of the products by the weight of the whole mass...
Σελίδα 43 - The areas of circles are to each other as the squares of their diameters, or of their radii.
Σελίδα 42 - 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 93 - ... 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. When this is the case, take a bit of mutton suet and fine flour and clean the work.
Σελίδα 138 - To find the absolute strength of a rectangular beam, when fixed at one end and loaded at the other. RULE. Multiply the value of S by the depth of the beam, and by the area of its section, both in inches: divide the product by the leverage in inches, and the quotient equal the absolute strength of the beam in Ibs.
Σελίδα 226 - Find the first three figures in the left-hand column of the page under N, in which the number is situated, and the fourth figure, at the top or bottom of the page ; then the logarithm directly under the fourth figure, and in a line with the three figures in the column on the left, with its proper index, is the logarithm required. Thus, the log. of 450 is 2-653213, and the log. of 7464 is 3-872972. Or, the log. of 378-5 is 2-578066, and that of -7854 is— 1-895091.
Σελίδα 47 - To find the convex surface, solidity, or capacity of a cone or pyramid. Rule 1 . — Multiply the circumference of the base by the slant height, and half the product is the slant surface.
Σελίδα 137 - The distance between the supports of a beam of Riga fir is 16 feet, and the weight it must be capable of sustaining in the middle of its length is 8000 Ibs., with a deflection of not more than...
Σελίδα 141 - When the length of a cast iron column with flat ends equals about thirty times its diameter, fracture will be produced wholly by bending of the material ; — when of less length, fracture takes place partly by crushing and partly by bending : but, when the column is enlarged in the middle of its length from one and a half to twice its diameter at the ends, by being cast hollow, the strength is greater by ^-th than in a solid column containing the same quantity of material.