The Engineer's and Mechanic's Encyclopædia: Comprehending Practical Illustrations of the Machinery and Processes Employed in Every Description of Manufacuture of the British Empire, Том 1Kelly, 1835 |
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acid alkali ammonia angle antimony aperture apparatus applied attached axis barrel body boiler boiling bottom brass called carbonic acid carriage cast iron centre charcoal chlorine cistern coal cock colour condensed consists construction containing copper cupel cylinder diameter distillation effect employed engine engraving equal feet fire fixed flue fluid force frame fuel furnace glass groove heat hole horizontal inches inclined plane instrument invention iron length lever liquid liquor lower machine matter means melted mercury metal motion mould mould boxes muriatic acid nitric acid obtained operation passing patent piece pipe piston placed plate portion potash pressure produced proportion pulley purpose quantity represents rollers round screw shaft side sliding specific gravity spermaceti steam substance sufficient sulphuric sulphuric acid surface temperature thickness tube turned upper usually valve vapour velocity vessel weight wheel wood zinc
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Страница 472 - Air is a mixture of two gases, — oxygen and nitrogen, — in the proportion of one part of the former to four of the latter. Oxygen is the active gas, the feeding and warming gas, the life-giving principle of nature. It has been well named "the great supporter of animal life.
Страница 361 - When pieces of charcoal about an inch long and onesixth of an inch in diameter, were brought near each other (within the thirtieth or fortieth part of an inch) a bright spark was produced, and more than half the volume of the charcoal became ignited to whiteness, and by withdrawing the points from each other a constant discharge took place through the heated air, in a space equal at least to four inches, producing a most brilliant ascending arch of light, broad, and conical in form in the middle.
Страница 570 - Commons was appointed in 1819, "to inquire how far it might be practicable to compel persons using steam engines and furnaces in their different works, to erect them in a manner less prejudicial to public health and comfort, and to report their observations thereupon to the House.
Страница 361 - When any substance was introduced into this arch, it instantly became ignited ; platina melted as readily in it as wax in the flame of a common candle ; quartz, the sapphire, magnesia, lime, all entered into fusion...
Страница 338 - 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...
Страница 429 - DELFT- WARE is a kind of pottery covered with an enamel or white glazing, which gives it the appearance and neatness of porcelain, some kinds of this enamelled pottery...
Страница 646 - Now by marking the number of grains of water held by the narrow tube be on a graduated scale attached to it, we can find at once what is the weight of a quantity of water equal in bulk to the solid matter in the sand, and by comparing this with the weight of the sand, we have its true specific gravity.
Страница 662 - For this purpose, the work man turns up the edge or brim, to the depth of about an inch and a half, and then returns the point back again through the centre or axis of the cap, so far as not to take out this fold of the same depth.
Страница 579 - ... such gallons shall be a bushel, and eight such bushels a quarter of corn or other dry goods, not measured by heaped measure.
Страница 335 - ... it cannot easily be seen, with gum mastic, the stone being previously made hot enough to melt it. By the same medium cameos of white enamel or coloured glass are often joined to a real stone as a ground, to produce the appearance of an onyx. Mastic is likewise used to cement false bucks or doublets to stones, to alter their hue.