A Dictionary of Arts, Manufactures, and Mines: Containing a Clear Exposition of Their Principles and Practice, Τόμος 1D. Appleton & Company, 1844 |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acetate alcohol alkali alloy alum alumina ammonia antimony barrel bath becomes beer blue bobbin boiling bottom calcined carbonic carbonic acid cent charcoal chlorine cloth color consists contains copper cotton crystals cupel cylinder diameter dissolved distillation ditto drawing rollers dried dyeing employed evaporation feet fermentation flax frame furnace gallons gasometer Germ gluten grain heat heckle holes inches iron lever lime liquid liquor machine malt manufacture matter melted metal milk of lime mixed mixture mordant mould muriatic muriatic acid nitric acid obtained operation ounces oxyde oxygen passed piece pipe placed plate portion potash pounds powder precipitate proportion pulley quantity rollers round salt screw shaft side silk silver soda solution specific gravity spindles starch steam substance sugar sulphate sulphuric acid surface temperature tube turned vessel vinegar washed weight wheel wood wort yarn yeast yellow
Δημοφιλή αποσπάσματα
Σελίδα 83 - Arkwright's polity, magnificent edifices, surpassing far in number, value, usefulness, and ingenuity of construction, the boasted monuments of Asiatic, Egyptian, and Roman despotism, have, within the short period of fifty years, risen up in this kingdom, to show to what extent capital, industry, and science may augment the resources of a state, while they meliorate the condition of its citizens. Such is the factory system...
Σελίδα 4 - ... as are too commonly the slaves of blind prejudice and vicious routine. Secondly, to afford to Merchants, Brokers, Drysalters, Druggists, and Officers of the Revenue, characteristic descriptions of the commodities which pass through their hands.
Σελίδα 396 - ... is as the squares of the respective weights The average price of rough diamonds that are worth working, is about £2 for the first carat.
Σελίδα 26 - Sykes's hydrometer, possesses in many respects decided advantages over those formerly in use. The committee of the Royal Society state that a definite mixture of alcohol and water is as invariable in its value as absolute alcohol can be, and can be more, readily and with equal accuracy identified by that only quality or condition to which recourse can be had in practice, namely, specific gravity.
Σελίδα 453 - ... will suffer no abatement of brightness or size, but will continue to keep the water briskly boiling. If the capsule be now lowered into the middle of the flame, this will immediately lose its brightness, becoming dull and smoky, covering the bottom of the capsule with soot ; and owing to the imperfect combustion, though the water is now surrounded by the flame, its ebullition will cease.
Σελίδα 280 - Another cement in which an analogous substance, the curd or cascnm of milk is employed, is made by boiling slices of skim-milk cheeses into a gluey consistence in a great quantity of water, and then incorporating it with quicklime on a slab with a muller, or in a marble mortar. When this compound is applied warm to broken edges of stoneware, it unites them very firmly after it is cold. A cement which gradually indurates to a stony consistence may be made by mixing 20 parts of clean river sand, two...
Σελίδα 525 - Thus when the forms of the interior and exterior do not permit the moulds to be separated in two pieces, it is divided into several, which are nicely fitted with adjusting pins. More than two castiron rings or platforms are sometimes necessary. When ovals or angular surfaces are to be traced instead of those of revolution, no upright...
Σελίδα 89 - ... from which it would have no tendency to return. The sensibility in this case would be the greatest possible ; but the other two requisites of level and stability would be entirely lost. The case would be even worse if the centre of gravity were higher than the centre of suspension, as the balance when deranged, if free, would make a revolution of no less than a semi-circle.
Σελίδα 65 - This fork is to be brought down under the shoulder, near the top of each rod, and made fast to it by passing a pin through two little holes in the claws. The rods are thus drawn up, about seven feet at a time, which is the usual distance between each joint; and at every haul a fork...
Σελίδα 487 - ... might be owing to the decomposition of a part of the gas towards the interior of the flame where the air was in smallest quantity, and the deposition of solid charcoal, which, first by its ignition, and afterwards by its combustion, increased in a high degree the intensity of the light ; and a few experiments soon convinced me that this was the true solution of the problem.