Repertory of Arts, Manufactures, and Agriculture: Consisting of Original Communications, Specifications of Patent Inventions ...T. and G. Underwood, 1823 |
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alloy ammonia anchor apparatus applied ascertained attraction bearing boiler branches bridges of suspension carbonate cast-iron cast-steel catenarian chains centre colour common compass construction copper crucible cylinder described Dryburgh bridge effect experiments feet five fixed flue fluid frame fruit furnace galena glazing ground hardening heat holes improvements inches invention iridium iron lever lime liquor LONDON HORTICULTURAL SOCIETY machine magnesia manner manufacture means metal method mixture mode mordant motion muriatic acid needle nitric acid observed obtained operation osmium oxyd pallets Paris pass PETER BARLOW piece pipe piston placed plane plants plate platina portion potash powder prevent produced proportion purpose pyro-citrate quantity reverberatory furnace rhodium ring road-way rods screw shank shewn shews ship's side spindle starch steam steel stone substances sufficient sulphate of lead sulphuric acid surface suspended thickness tion trees upper vessel wash weight welded wheel wind-passage XLII.-SECOND SERIES
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321 ページ - Now Know Ye, that in compliance with the said proviso, I, the said Adolphe Nicole, do hereby declare that the nature of my said Invention, and the manner in which the same is to be performed, are particularly described and ascertained in and by the following statement thereof, reference being had to the Drawing hereunto annexed, and to the figures and letters marked thereon...
65 ページ - Now know ye, that in compliance with the said proviso, I, the said William Furnival, do hereby declare that the nature of my invention, and the manner in which the same is to be performed, are particularly described and ascertained in and by the following description thereof, reference being had to the drawing hereunto annexed, and to the figures and letters marked thereon, (that is to say...
85 ページ - ... steel, or even than the Indian wootz, with no disposition whatever to crack, either under the hammer, or in hardening. Some articles for various uses have been made from this alloy ; they prove to be of a very superior quality ; its application will probably be extended not only to the manufacture of cutlery, but also to various descriptions of tools ; the trifling addition of price cannot operate against its very general introduction. The silver alloy may be advantageously used for almost every...
96 ページ - ... per cent, of iridium and osmium fused with some pure iron, gave a button, which, when forged, and polished, was exposed, with many other pieces of iron, steel, and alloys, to a moist atmosphere : it was the last of all showing any rust. The colour of this compound was distinctly blue ; it had the property of becoming harder, when heated to redness and quenched in a cold fluid. On observing this steel-like character, we suspected the presence of carbon ; none, however, was found, although carefully...
90 ページ - ... so that its particles are more readily attacked by the acid, analogous to the case of protosulphuret of iron. Although we have not been able to prove by such experiments, as may be considered strictly decisive, to which of these causes the action is owing, or how much is due to any of them, yet we do not hesitate to consider the second as almost entirely, if not quite, the one that is active. The reasons which induce us to suppose this to be the true cause of the action, rather than any peculiar...
243 ページ - There are many different sorts of hautboys : one has the male and female organs in the same blossom, and bears very freely ; but that which I most approve, is the one which contains the male organs in one blossom, and the female in another : this bears fruit of the finest colour, and of far superior flavour. In selecting these plants, care must be taken, that there...
346 ページ - The effect of cloves in preventing the mouldiness in Ink is indeed generally known ; and it is obtained in the same way by oil of lavender, in a very minute quantity, or by any other of the perfumed oils. To preserve leather in the same manner from this effect, is a matter of great importance, particularly in military store-houses...
83 ページ - When returned to us, it was subjected to examination both mechanical and chemical, as well as compared with the similar products of the laboratory. From the external appearance, as well as from the texture of the part when broken by the blow of the hammer, we were able to form a tolerably correct judgment as to its general merits ; the hardness, toughness, and other properties, were farther proved by severe trials, after being fashioned into some instrument, or tool, and properly hardened and tempered.
87 ページ - ... powder boiled in the acid ; the silver will remain in such a minute state of division, that it will require some time to deposit. The powder is then to be boiled in a small portion of strong muriatic acid;* this will dissolve the iron and silver, and the latter will fall down as a chloride of silver on dilution with water ; or the powder may be dissolved in pure nitric acid, and tested by muriatic acid and ammonia. The alloy of steel and palladium, acted on by dilute sulphuric acid, and boiled...
20 ページ - Dr. Howison of Lanarkshire was so fortunate, when in China, as to procure a basin and ewer of Chinese or white copper, a part of which he sent me for analysis. From the experiments I have performed on it, I find the composition to be different from what is stated by the above-named chemists ; its component parts being copper, zinc, nickel, and iron; the last of which, however, is but small in quantity.