Newton's London Journal of Arts and Sciences: Being Record of the Progress of Invention as Applied to the Arts..., Band 16

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William Newton, Charles Frederick Partington
W. Newton, 1840
 

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Seite 136 - ... quality. First-class bricks give a clear ringing sound when struck, and are of a red and brown colour, and exhibit a fine texture when broken. Bricks which are of a pale colour are not of good quality. Thin bricks are usually the best, as they are burned more equally ; but generally they are made about nine inches long, four and a half inches wide, and two and a quarter inches thick. " In estimating the quantity of brickwork, ascertain by calculation the number of cubic feet in the wall ; reduce...
Seite 2 - I believe it to be the invention or discovery of Messrs. Louis Jacques Maude Daguerre and Joseph Isidore Niepce, junior, both of the kingdom of France, from whom the French government have purchased the invention, for the benefit of that country. " This invention or discovery was fully communicated to me by a certain foreigner, residing in France, on or about the 15th...
Seite 327 - I consider to be new in the processes above described, and therefore claim as the invention secured to me by the hereinbefore in part recited Letters Patent is, 1.
Seite 247 - ... the standard measure of duty — the constituent heat of steam — the locomotive engine — the blast and resistance occasioned by it — the momentum of the engine and train, as exhibiting the whole mechanical effort exerted by the steam— the relative expenditure of power for a given effect by fixed and locomotive non-condensing engines. This bare enumeration of the principal...
Seite 2 - Wilde,) after hearing all parties who opposed the ' same, was pleased on or about the 2d of August, now last past, to issue his report to the Crown in favour of the patent being granted ; and it consequently passed the great seal in the usual course, being sealed on the day above named, which is SOME DAYS PRIOR to the date of the exposition of the said invention or discovery to the French Government at Paris, by MM. Daguerre and Niepce, according to the terms of their agreement.
Seite 49 - By this freedom of discussion, statements and opinions are canvassed, and corrected or confirmed, as soon as promulgated — the labours of authors and claims of individuals are made known and secured as matter of history — and attention is continually kept alive to the state and progress of knowledge in those departments of science which it is the especial object of this Institution to promote. The Council trust, therefore, that those individuals who have stored up knowledge and facts for many...
Seite 7 - ... of the iodine condensing on the surface of the silver. If the plate were allowed to remain too long, this golden yellow colour would turn purple, or violet colour, which must be avoided, because, in this state, the coating is not so sensitive to the effect of light. On the contrary, if this coating is too pale, or not sufficiently yellow, the image taken from nature would be very deficiently or faintly re-produced : therefore, a coating of a golden yellow is particularly desired, because it is...
Seite 10 - ... at the same time touching the iodine with the fingers. During the operation of coating, the cup ought to be covered with a piece of gauze stretched on a ring. The gauze regulates the evaporation of the iodine, and also...
Seite 383 - Richards of the same place, mechanical inspector, for improvements in the manufacture of gas for the purpose of illumination, and in apparatus used when transmitting and measuring gas.
Seite 263 - I do hereby declare this to be my specification of the same, and that I do verily believe this my said specification doth comply in all respects fully and without...

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