Mechanics and Engineers Book of Reference and Engineers Field BookStringer & Townsend, 1856 - 517 σελίδες |
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Σελίδα 91
... yellow and blue ) . The first two require a mixture of white in proper proportions , from a fourth to two - thirds , according to the tint intended to be given . The white used for this purpose is ceruse , or the white oxide of lead ...
... yellow and blue ) . The first two require a mixture of white in proper proportions , from a fourth to two - thirds , according to the tint intended to be given . The white used for this purpose is ceruse , or the white oxide of lead ...
Σελίδα 92
... Yellow Copal Varnish . Yellow oxide of lead , or Naples and Montpelier , both reduced to impalpable powder . These yellows are hurt by contact with iron or steel . In mixing them , therefore , a horn spatula , with a glass mortar and ...
... Yellow Copal Varnish . Yellow oxide of lead , or Naples and Montpelier , both reduced to impalpable powder . These yellows are hurt by contact with iron or steel . In mixing them , therefore , a horn spatula , with a glass mortar and ...
Σελίδα 94
... of warm oil of turpentine . Balloon Varnish . • Melt india - rubber in small pieces with its weight of boiled linseed oil , and thin it with oil of turpentine . Varnish for Engraving on Copper . Yellow wax 1 oz 94 VARNISHES .
... of warm oil of turpentine . Balloon Varnish . • Melt india - rubber in small pieces with its weight of boiled linseed oil , and thin it with oil of turpentine . Varnish for Engraving on Copper . Yellow wax 1 oz 94 VARNISHES .
Σελίδα 95
Charles W. Hackley. Varnish for Engraving on Copper . Yellow wax 1 oz .; mastic 1 oz .; asphaltum oz . Melt , pour into water , and form into balls for use . A softer varnish for engravers is made thus : Tallow 1 part , and 2 of yellow ...
Charles W. Hackley. Varnish for Engraving on Copper . Yellow wax 1 oz .; mastic 1 oz .; asphaltum oz . Melt , pour into water , and form into balls for use . A softer varnish for engravers is made thus : Tallow 1 part , and 2 of yellow ...
Σελίδα 97
... yellow resin 12 pounds . Again boil , until in cooling the mixture may be rolled into pills ; then add spirit of turpentine 30 gallons ; lampblack 7 pounds . Mix well . Impermeable Varnish . Boiled oil 100 parts ; finely powdered ...
... yellow resin 12 pounds . Again boil , until in cooling the mixture may be rolled into pills ; then add spirit of turpentine 30 gallons ; lampblack 7 pounds . Mix well . Impermeable Varnish . Boiled oil 100 parts ; finely powdered ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
9 Diff acid angle antimony applied beam bismuth blue body Boil borax Brass breadth cast-iron centre chord circle circumference color Copal copper cosine cube curvature curve cylinder DEGREES Diam diameter Dissolve distance divide draw equal EXAMPLE external secant feet radius foot force gallons given glass glue gold heat horse power inclined plane iron lamp-black length lever linseed oil Logarithm Marble mastic Melt Metal minute Multiply nitric acid number of teeth ounces paper pearlash perpendicular piece of timber pint potash pounds pressure Prussian blue quantity quotient rectified spirit revolutions per minute revolving RULE sal-ammoniac shaft shell-lac side silver solution specific gravity spirit square inch square root steam sulphate surface TABLE tangent tenon thickness tons Varnish velocity versed sine vessel vinegar weight wheel wood yellow zinc
Δημοφιλή αποσπάσματα
Σελίδα 39 - To find the solidity of a spheroid. RULE. Multiply the square of the revolving axis by the fixed axis, and by *5236, and the product will be the solidity.
Σελίδα 33 - Any circle whose diameter is double that of another contains four times the area of the other.
Σελίδα 27 - Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles.
Σελίδα 267 - ... they are dissolved. Then mix the whole with a sufficient heat. Keep the glue in a phial closely stopped, and when it is to be used, set the phial in boiling water.
Σελίδα 266 - ... and, in another vessel, dissolve as much isinglass, previously a little softened in water, (though none of the water must be used), in French brandy or good rum, as will make a...
Σελίδα 235 - SOLDERS. For Lead. — Melt one 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, 1 ; bismuth, 1. Melt them together and run them into slips.
Σελίδα 38 - RULE. — To the sum of the areas of the two ends add the square root of their product ; multiply this sum by the perpendicular height, and -^ of the product is the solid content.
Σελίδα 128 - Bring the edges of the pieces of shell to fit each other, observing to give the same inclination of grain to each, then secure them in a piece of paper, and place them between hot irons or pincers ; apply pressure, and let them cool.
Σελίδα 65 - RULE. — Divide the weight to be raised by twice the number of pulleys in the lower block ; the quotient will give the power necessary to raise the weight. EXAMPLE. — What power is required to raise 600 Ibs., when the lower block contains six pulleys ? 600 6 x 2 = 50 Iks., Ans.
Σελίδα 53 - To find the centre of Gyration, 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; the square root of the quotient will be the distance of the centre of gyration, from the centre of motion.