The London journal of arts and sciences (and repertory of patent inventions) [afterw.] Newton's London journal of arts and sciencesWilliam Newton 1847 |
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Seite 221 - If it contained cotton, the cotton threads are found to be wanting in that portion which had been immersed in the acid ; and by counting the threads of the two portions of the sample, its quantity may be very readily estimated. If the sample has been allowed to remain too long in sulphuric acid, the linen threads likewise become brittle, or even eaten away ; if it were not left a sufficient time in it, only a portion of the cotton threads have been removed ; to make this sample useful, it must be...
Seite 436 - 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...
Seite 221 - Hamburg, and asked me whether I could give him a process for effecting this purpose. Now since, as far as I am aware, nothing has been published on this subject, and it is of very general interest, I consider it a duty to communicate the results of my experiments. I had already observed, in experimenting with explosive cotton, flax, &c., that these two substances behave somewhat differently towards concentrated acids; and although it has long been known that strong sulphuric acid converts all vegetable...
Seite 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.
Seite 290 - The above table is the mean of a great many experiments. When alcohol is stronger than 0.92, or the excise-proof, its boiling point varies too little with its progressive increase of strength, to render that test applicable in practice. In fact, even for proof spirits, or spirits approaching in strength to proof, a more exact indication may be obtained by diluting them with their own bulk of water, before ascertaining their strength, and then doubling it. The boiling point of any alcoholic liquor...
Seite 47 - ... it enacted, That the proprietor of every such design, not previously published either within the United Kingdom of Great Britain and Ireland, or elsewhere, shall have the sole right to apply the same to any articles of manufacture, or to any such substances as aforesaid, provided the same be done within the United Kingdom of Great Britain and Ireland...
Seite 47 - And with regard to any new or original design for any article of manufacture having reference to some purpose of utility, so far as such design shall be for the shape or configuration of such article...
Seite 446 - ... 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...
Seite 294 - ... of sugar to the 100 gallons. To Chemists for their tinctures, &c., this instrument will be found essentially useful. NB — Care must be taken that the mercury is entirely in the bulb of the thermometer before it is fixed on the stem for operation, and in all cases (except for water) the salt must be used. CONCLUSION-. Wines are peculiarly subject to be mystified by adulterations of various kinds. It will prove of great advantage to the public when the relative quantity of frmt, or saccharum,...
Seite 265 - 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...