London Journal of Arts and Sceinces: And Repertory of Patent Inventions, Volume 4William Newton, Charles Frederick Partington W. Newton, 1822 - Industrial arts |
From inside the book
Results 1-5 of 46
Page 8
... substances form , not only very imperfectly , the means of defending the bottoms of floors from the injury that occurs when they are exposed to the intense heat necessary in the puddling process , but that either of these impart or ...
... substances form , not only very imperfectly , the means of defending the bottoms of floors from the injury that occurs when they are exposed to the intense heat necessary in the puddling process , but that either of these impart or ...
Page 9
... substances which will completely prevent the bad effects above mentioned in the employ- ment of slag , scoria , or ... substance , or material , hitherto used for the pre- servation of cast iron bottoms or floors . " Although the ...
... substances which will completely prevent the bad effects above mentioned in the employ- ment of slag , scoria , or ... substance , or material , hitherto used for the pre- servation of cast iron bottoms or floors . " Although the ...
Page 10
... substances for the better preservation of the cast iron bottoms and floors of puddling furnaces , but for the substitution of such substances for those of slag , scoria , or sand , which impart , and engender impurities very injurious ...
... substances for the better preservation of the cast iron bottoms and floors of puddling furnaces , but for the substitution of such substances for those of slag , scoria , or sand , which impart , and engender impurities very injurious ...
Page 26
... substance and giving an account of the chemical experiments made with it , the same method should be adopted which has been followed during its analysis ; and that method may be thus enunciated in the shape of general and aphoristic ...
... substance and giving an account of the chemical experiments made with it , the same method should be adopted which has been followed during its analysis ; and that method may be thus enunciated in the shape of general and aphoristic ...
Page 30
... substances as determined by the common blow - pipe , disappears before the intense heat produced by this , which levels all bodies to one general class of fusible substances ; though very evident diffe- rences are still observable in ...
... substances as determined by the common blow - pipe , disappears before the intense heat produced by this , which levels all bodies to one general class of fusible substances ; though very evident diffe- rences are still observable in ...
Other editions - View all
Common terms and phrases
1st Sat 2d Sat acid action alpaco anchor animal annatto apparatus appears applied axle balance spring bars boat boiler bottom carbonic acid carriage chevaux-de-frise colour conj consists construction containing copper Coppermine River cylinder described Diff drawing rollers eclipsed effect employed engine engraving essential oil experiments feet fixed furnaces heat holes Holyhead improved inches Institution invention iron joints June labour lamp leeches length lever London machine magnesia manual labour manufacture means ment metal method Middlesex mode months for inrolment muriate observations obtained operation paddles passing patent Perigee piece pipe placed plate present produced proposed purpose quantity reservoir revolving rollers ropes round screw Sealed shank shewn side Society spade specific gravity specification spring steam steam-engine substance surface tallow temperature timber tion tube upper verdigris vessel vicuna volume wheel wick wrought iron
Popular passages
Page 36 - London's Encyclopaedia of Agriculture: comprising the Laying-out, Improvement, and Management of Landed Property, and the Cultivation and Economy of the Productions of Agriculture. With 1,100 Woodcuts. 8vo. 21s. London's Encyclopaedia of Gardening: comprising the Theory and Practice of Horticulture, Floriculture, Arboriculture, and Landscape Gardening.
Page 205 - ... of Florence : I perceive that your manner of working, and your designs, are rather those of a sculptor than a goldsmith ; now I have considerable undertakings in bronze, so that if you will go with me to England, I will at once make your fortune.
Page 36 - Improvement, and Management of Landed Property, and the Cultivation and Economy of the Animal and Vegetable Productions of Agriculture, including all the latest Improvements. A general History of Agriculture in all Countries, and a Statistical View of its present State, with suggestions for its future progress in the British Isles.
Page 274 - ... if it make a slight impression, denoting some degree of malleability, the iron is of a good quality, provided it be uniform; if fragments fly off, and no sensible indentation be made, the iron will be hard and brittle.
Page 146 - ... repairs in the machinery ; and should the supply of corn, &c. at any time, fall off, it is not necessary that the labour of the prisoners should be suspended; nor can they be aware of the circumstance. The...
Page 280 - Fifty lithographic prints, illustrative of a tour in France, Switzerland, and Italy, during the years 1819, 20, and 21, from original drawings taken in Italy, the Alps, and the Pyrenees, by MARIANNE COLSTON, in octavo, are preparing for publication.
Page 263 - ... pounds, two hundred and thirty-two feet, in a minute ; and of working, on an average, eight hours per day. This is equivalent to the work of thirty-four men; twenty-five square feet of canvas performing the average work of a day-labourer.
Page 273 - N. down to hit. 69 deg. comprising an extent (reckoning the indentations and sinuosities observed) of about 800 miles ! The coast visited by Captain Scoresby is a continuation towards the North of that on which were planted the ancient colonies from Iceland, the fate of which is still veiled in such deep obscurity.
Page 268 - The poets tell us, that there is a pleasure in poetic pains, which only poets know. So it may, with truth, be said, there is a labour in the historian's researches, which only historians can know: days, nay weeks, are sometimes consumed in ascertaining a date, or verifying a fact. Mr. Partington appears to have spared no pains to render his work what he, doubtless, designed it to be, and which, in truth, it is, a fair epitome of what is known relative to that stupendous machine, the steam-engine,...
Page 157 - Is magnetism identical with electricity, or an independent agent, put into motion or activity by electricity ? Queries of this kind might be considerably multiplied, and stated in more precise and various forms : the solution of them, it must be allowed, is of the highest importance; and though some persons have undertaken to answer them in the most positive manner...