Repertory of Arts, Manufactures, and Agriculture: Consisting of Original Communications, Specifications of Patent Inventions ...T. and G. Underwood, 1821 |
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acres apparatus applied axis axle bitumen boiler bottom carbonic acid carriage cast-iron centre chap cloth colour construction containing crank curve cutters described distilled ditto drawing elastic fluid engraving equal expense experiments feet five fixed frame fruit glass ground hand-moulds heat holes hydrometer improvements inches instrument invention iron JOHN BIRKINSHAW joints keyed instrument length lever lime machine malic acid malleable iron manner MANUFACTURES means mercury metal method motion motive cylinder mould moveable nitric acid obtained orifice oxygen pall or click parallelogram Paris passing Patent granted pears PETER HAWKER piece pins pipe piston placed Plate plough prevent produce purpose quantity rails ratchet-wheel reservoir rollers scale screw shaft shew shewn side specific gravity spring steam steam-engines sufficient sulphuric acid surface temperature thermometer tion tube turmeric valve velocipede vessel weight wheel wool XXXIX.-SECOND SERIES
Popular passages
Page 206 - 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...
Page 335 - ... for the legal determination of the standard Yard, that which was employed by General Roy, in the measurement of a base on Hounslow Heath, as a foundation for the trigonometrical operations that have been carried on by the Ordnance throughout the country...
Page 207 - ... iron bars or rails of a peculiar form, instead of cast-iron rails, as heretofore. From the brittle nature of cast iron, it has been found, by experience, necessary to make the bars of a railroad sufficiently strong to bear at least six times the weight intended to be carried along the road, by which the original cost of a railroad was considerably augmented ; or if light rails were used, the necessity of frequently repairing entailed a heavy expense upon the proprietors.
Page 286 - And this alkalinity is not destroyed till some more powerful acid, such as the sulphuric or muriatic is added, sufficient to saturate the whole of the lime. Indeed these acids may be considered as sufficient for tests of the quantity of lime in such waters, and nothing more is required than to mark the quantity of acid necessary to neutralize the lime.
Page 263 - Now know ye, that in compliance with the said proviso, I, the said John Watson, do hereby declare that the nature of my said Invention, and the manner in which the same is to be performed, are...
Page 102 - House relating to Weights and Measures, and of the proceedings which have taken place for determining the length of the pendulum vibrating seconds, and to report their observations and opinion thereupon to the House ; have considered the matters referred to them, and have agreed to the following Report :— Your Committee concur entirely in opinion with the Commissioners on Weights and Measures, as to the inexpediency of changing any standard, either of length, superficies, capacity, or of weight,...
Page 113 - HE progress which has been made during the last thirty years, in the Mechanical Arts, and in the application of Science to the useful purposes of life, has been no less remarkable for its rapidity, than for the variety and importance of the inventions by which it has been marked. The history of the Fine Arts during the same period, though it does not present us with any very splendid achievements, has yet to record some striking specimens of their advancement. One of the most important of these,...
Page 142 - Now, know ye, that, in compliance with the said proviso, I, the said David Stead, do hereby declare that the nature of the said invention, and the manner in which the same is to be performed...
Page 274 - ... for the purpose of protecting the eyes from a strong light; added to which is a green, blue, or other coloured glass, in a frame, and in such a position, that when placed opposite a window. lamp, or candle, it will take off the glare of white paper, by sliding a green or blue...
Page 223 - ... again raised an immediate effect is visible ; for there is not only a plentiful supply of steam to produce the full working speed of the engine, but an excess of it going waste at the safety valve. This singular effect will continue for several days. Such is the fact,— but the principles by which this vegetable matter acts, are not very obvious, as it is doubtful whether it acts chemically or mechanically.