Repertory of Arts, Manufactures, and Agriculture: Consisting of Original Communications, Specifications of Patent Inventions ...T. and G. Underwood, 1819 |
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1 - 5 találat összesen 59 találatból.
4. oldal
... portion of the water acquires almost simul- taneously the same temperature . The water in the lowest division , being nearest the fire , will be the hottest , while that in the upper division , supplied from the forcing pump , will be ...
... portion of the water acquires almost simul- taneously the same temperature . The water in the lowest division , being nearest the fire , will be the hottest , while that in the upper division , supplied from the forcing pump , will be ...
20. oldal
... portions as the model . To effect which object , I make a model out of a solid piece of timber to the shape re- quired for the service of the vessel , and affix a keel and cutwater to it , capable of being detached from the hull . I ...
... portions as the model . To effect which object , I make a model out of a solid piece of timber to the shape re- quired for the service of the vessel , and affix a keel and cutwater to it , capable of being detached from the hull . I ...
38. oldal
... portion of iron to be employed , can be effectually proved . The most advisable mode of combination may also be deter- mined by similar means ; and although I have already from my experiments formed a plan which is practicable and ...
... portion of iron to be employed , can be effectually proved . The most advisable mode of combination may also be deter- mined by similar means ; and although I have already from my experiments formed a plan which is practicable and ...
56. oldal
... portions of wax in the pollen of flowers , the varnish of leaves , and the white efflorescence on our plums and grapes , the in- habitants of the Andes of Quindiu made candles of the thick coating of wax which covers the stems of the ...
... portions of wax in the pollen of flowers , the varnish of leaves , and the white efflorescence on our plums and grapes , the in- habitants of the Andes of Quindiu made candles of the thick coating of wax which covers the stems of the ...
58. oldal
... portion . When nitric acid , diluted with four parts of water , is poured drop by drop into the expressed juice of a very young fruit , a singular appear- ance is observed : there forms in the centre of each drop a gelatinous pellicle ...
... portion . When nitric acid , diluted with four parts of water , is poured drop by drop into the expressed juice of a very young fruit , a singular appear- ance is observed : there forms in the centre of each drop a gelatinous pellicle ...
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alkali ammonia anchor animal matter appears applied ascertain axle azote barometer bars Beaumaris block boiling bolt bottom branches bridge buds carbonic acid carriage charcoal coal coal gas cobalt cochineal colouring matter construction crystals cubic decoction described dissolved distillation drawing edge effect experiments feet fixed forge frame fruit gallic acid gases give heat hole Holyhead hydrogen hydrometer implement or machine improvements inches injury insects invention iron Jones leaves length liquid liquor Majesty's Treasury manner Menai Strait metal method mode navigation nickel nitric acid observed obtained olefiant gas ounces oxalate oxalic acid oxyd oxygen pass piece Plate portion potash precipitate present produced proportion purpose quantity rice Rock rollers salt saltpetre screws shews side slider sliding solution stem strength substance sufficient sulphuretted hydrogen Sympiesometer Telford tion tons trees Trinity House tube valve vegetable vessel weight wheel Williams wood XXXV.-SECOND SERIES
Népszerű szakaszok
226. oldal - 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...
134. oldal - 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 fully described and ascertained in and by the following statements thereof, reference being had to the Drawings hereunto annexed, and to the figures and letters marked thereon...
163. oldal - STONE": in which said Letters Patent there is contained a proviso obliging me, the said Joseph Aspdin, by an instrument in writing under my hand and seal, particularly to describe and ascertain the nature of my said invention, and in what manner the same is to be performed...
223. oldal - Lieutenant Robertson, in a letter to the Honourable Captain Napier of Merchistoun, has spoken of it in the following manner : " The Sympiesometer is a most excellent instrument, and shews the weather far better than the Marine Barometer. In short, the barometer is of no use compared to it. If it has any fault, it is that of being too sensible of small changes, which might frighten a reef in when there was no occasion for it ; but, take it altogether, in my opinion it surpasses the mercurial barometer...
203. oldal - Mange has discovered that the pyroligneous acid, obtained by the distillation of wood, has the property of preventing the decomposition and putrefaction of animal substances. It is sufficient to plunge meat for a few moments into this acid, even slightly empyreumatic, to preserve this meat as long as you may desire.
145. oldal - London, and in every favourable situation, I preserve a large number of the young shoots, which are emitted in a proper direction in early spring by the yearling wood, shortening each where necessary, by pinching off the minute succulent points, generally to the length of one or two inches. Spurs which lie close to the wall are thus made, upon which numerous blossom buds form very early in the ensuing summer...
265. oldal - It must indeed, be acknowledged that the explanation rests on hypothesis only ; but it is on an hypothesis, which is perfectly consistent with a copious and increasing induction of facts, all tending to establish a limitation to the proportions in which bodies combine; while the opposite explanation is at variance with this general law of chemical union.
144. oldal - Every bunch of grapes commences its formation as a tendril, and it is always within the power of every cultivator to occasion it to remain a tendril. The blossoms are all additions, the formation of which is always dependent upon other agents : and if any considerable part of the leaves be taken off the branch prematurely, or if the vine be not subjected to the influence of the requisite degree of heat and light, the tendrils will permanently retain their primary form and office; and it is very frequently...
254. oldal - ... tubes, to imagine, that an advantage is thus gained; and they have not been aware, that the gas, when thus treated, sustains a much more than proportional loss of illuminating power. The quantity of quicklime required for the absorption of a cubic foot of carbonic acid, or of the same volume of sulphuretted hydrogen gas, will be found on calculation not to exceed 1050 grains, or about 2| ounces avoird.
186. oldal - ... felt myself incompetent to decide, from the want of the necessary data. It 'is to supply these data, that I have once more returned to the investigation of the subject. The objects, which I have had it in view to determine by the following course of experiments, are, whether, on the large scale of manufacture, there is a decline in the value of the aeriform products of coal, from the beginning to the end of the distillation, similar to that which takes place on a small scale; — at what stages...