Newton's London Journal of Arts and Sciences: Being a Record of the Progress of Invention as Applied to the Arts. ..., Band 19

William Newton, Charles Frederick Partington
W. Newton, 1842

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Seite 170 - Thomas Richardson, of Newcastle, chemist, for a preparation of sulphate of lead applicable to some of the purposes for which carbonate of lead Is now applied.
Seite 389 - John Carr, of North Shields, earthenware manufacturer, and Aaron Ryles, of the same place, agent, for an improved mode of operating in certain processes for ornamenting glass.
Seite 67 - Huthven, of Rotherham, engineer, for a new mode of increasing the power of certain media, when acted upon by rotary fans or other similar apparatus.
Seite 191 - ... brush, taking care to wash it on the side which has been previously marked. This operation should be performed by candlelight. Let the paper rest half a minute, and then dip it into water. Then dry it lightly with blotting-paper, and finally dry it cautiously at a fire, holding it at a considerable distance therefrom. When dry, the paper is fit for use.
Seite 194 - ... sensitive calotype paper. I prefer to conduct the process in the open air, under a serene sky ; but without sunshine, the image is generally obtained in half a minute or a minute. If sunshine is employed, a sheet of blue glass should be used as a screen to defend the eyes from too much glare, because this glass does not materially weaken the power of the chemical rays to affect the paper. The portrait thus obtained on the calotype paper is a negative one, and from this a positive copy may be...
Seite 342 - Having thus described the nature of my invention, and the manner of carrying the same into effect, I would have it understood that I do not...
Seite 202 - Dantzic deal (Kyanized): the lengths vary from 46 feet to 20 feet, by 11 inches wide and 3 inches thick : they are so disposed, as that the first course of the rib is two whole deals in width, the next is one whole and two half deals, crossing the joints longitudinally as well as in the depth. Each rib consists of fourteen deals in thickness, bent over a centre to the required form, and secured together by oak treenails l\ inch diameter at intervals of 4 feet apart, each treenail traversing three...
Seite 456 - French centreings. As the arch rose from the springing, the crown of the centreing was loaded with stones, to prevent it rising and altering the shape of the arch. The cost of the entire aqueduct, which was about 21 miles long, with all the immediate and collateral works, and including the reservoir, was two millions and a half sterling. The communication was accompanied by three elaborate drawings of the general construction and details of the aqueduct, with the manner of carrying the stones. May...
Seite 191 - ... an invisible image, and I have discovered the means of causing this image to become visible. This is performed as follows : — I take some gallo-nitrate of silver, prepared in the manner before directed, and with this liquid I wash the paper all over with a soft camel-hair brush.
Seite 448 - Merchant Adventurers for the Discovery of Regions, Dominions, Islands, and Places unknown.

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