The London journal of arts and sciences (and repertory of patent inventions) [afterw.] Newton's London journal of arts and sciences

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William Newton
1844
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Page 128 - By Charles Cochrane, President of the Association for the promotion of improved Street Paving, &c. This paper first refers to a Commission formed by the present Government, " for inquiring into and considering the most effectual means of improving the Metropolis, and of providing increased facilities of communication...
Page 139 - Seal, particularly describing and ascertaining the Nature of his said Invention, and in what Manner the same was to be and might be performed, and...
Page 56 - ... the ascending flue from its place over the lamp, not from any deficiency in action, but for appearance sake only ; and finding that there was sufficient ascension power in the main part of the metal chimney to allow of a descending draught over the lamp, the tube, in place of going directly upwards, was made to turn short over the edge of the glass, to descend to the arm or bracket, to pass along it, and then ascend at the central part of the chandelier, or against the wall, if applied to a single...
Page 420 - Between this plate and the bottom of the vessel is introduced a current of steam by a pipe, so that it passes through the perforated plate and the madder which is upon it. During this process, which occupies from one to two hours, a substance is produced of a dark brown colour approaching to black.
Page 54 - Waterloo-bridge, and thence to the top of the tower, where one of the telegraphs was placed. The wire then descended, and a plate of zinc attached to its extremity was plunged into the mud of the river ; a similar plate was attached to the extremity at the north side, and was immersed in the water. The circuit was thus completed by the entire breadth of the Thames, and the telegraphs acted as well as if the circuit was entirely metallic.
Page 253 - ... in a few minutes the surface is covered with a fine film of metal, sufficient to insure a deposit of any required thickness on the article being connected with any of the electrical apparatus at present employed for coating articles with metal. The solution preferred to be used is prepared by dissolving 4 oz.
Page 418 - ... of spirits of wine, are dropped into it at different places; or the diluted oil of cloves may be mixed with the solution before it is poured upon the glass ; the more oil of cloves used, the more rapid will be the deposition of the silver ; but the operation should occupy about 2 hours.
Page 56 - ... that the proportion of carbonic acid gas in such places may be regarded as measuring, with sufficient exactness, the insalubrity of the air ; that in the proportion of 1 part to 100 of air, ventilation is indispensable for the prevention of injury to the health; that the proportion of carbonic acid gas had better not exceed a five-hundredth part, though it may rise without inconvenience to a two-hundredth part.
Page 434 - ... because the force with which it closed must depend on the difference of area between the upper and lower portions of the disc. It possessed an advantage in the extent and character of its water-way over all the other valves described, nearly the whole of the water-passage being parallel to the sides of the pump. On the other hand it was objected, that the axis would be liable to rapid abrasion, and consequently the valve would become leaky ; but Mr. Jordan did not concur in the opinion of that...
Page 361 - Great Northern,' HMSV the ' Bee,' the ' Rattler,and the ' Dwarf,' formerly the ' Mermaid,' a model of which was exhibited, with the various forms of screws used in the different experiments. The ' Great Britain ' not having yet been to sea could only be mentioned as a projected experiment. The 'Dwarf was 130 feet in length, 16 feet 6 inches in breadth. 9 feet deep, and was 164 tons burthen. The power of the engines was 90 horses, making from 30 to 32 strokes per minute. Friction wheels without teeth...

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