Newton's London Journal of Arts and Sciences: Being Record of the Progress of Invention as Applied to the Arts..., Volumen31

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William Newton, Charles Frederick Partington
W. Newton, 1847
 

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Página 439 - The next issue was, that the plaintiff was not the true and first inventor of the improvements which he claimed.
Página 57 - Richards, of the same works, mechanical inspector, for improvements in the manufacture of gas for the purposes of illumination, and in apparatus used when transmitting and measuring gas or other fluids.
Página 269 - Fig. 7 is a transverse vertical section taken in the plane of the line yy, in Fig. 6. Fig. 6 is a face view of the lower die, N, and shows also the blank after it is acted on by the dies. The specification states, that, if the arms of the blank are bent up at right angles, in a direction towards each other, perfect square corners will be left at L, L, with the metal through...
Página 448 - When placed in water at 110", no effect is produced upon it, except that it receives the impression of the nail more readily ; but when the temperature is raised to 145° or upwards, it gradually becomes so soft and pliant as to be capable of being moulded into any form, or of being rolled out into long pieces or flat plates. When in the soft state, it possesses all the elasticity of common India-rubber, but it does not retain these properties long.
Página 137 - ... 5. The caveator, or other person properly authorized by him, may at any time obtain copies of the caveat papers at the usual rates. 6. It is desirable that caveats should be explicit as to the character and features of the invention, embrace suitable drawings or sketches, and a model if convenient. The caveat fails of its purpose when the invention is not sufficiently explained.
Página 228 - What we claim as our invention and desire to secure by Letters Patent is the...
Página 65 - The process is divided into five operations. The first consists in polishing and cleaning the silver surface of the plate, in order to properly prepare or qualify it for receiving the sensitive layer or coating upon which the action of the light traces the design. The second operation is the applying that sensitive layer or coating to the silver surface. The third in submitting, in the camera obscura, the prepared surface or plate to the action of the light so that it may receive the images. The...
Página 310 - Wakeling-terrace, in the parish of St. Mary, Islington, in the county of Middlesex...
Página 291 - Brossard-Vidal constructed an instrument for determining by that temperature the proportion of alcohol present. His chief object was to furnish the Revenue Boards of France with a means of estimating directly the proportion of alcohol in wines, so as to detect the too common practice of introducing brandy into their cities and towns under the mask of wine, and thereby committing a fraud upon the octroi ; as the duty on spirits is much higher than on wines. The...
Página 211 - In this plan, one vessel for holding the material through which the vapours are passed is sufficient; but if more be employed they are charged with the same solution. When lime or alkali is used to absorb the sulphuretted hydrogen, the ammonia is liberated, and must be conducted into a second vessel charged with an acid. At the end of this part of the operation, that is when all the...

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