Engineering Facts and Figures

الغلاف الأمامي
Andrew Betts Brown
A. Fullerton & Company, 1869
 

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الصفحة 403 - HISTORY OF ENGLISH LITERATURE; with an OUTLINE of the ORIGIN- and GROWTH of the ENGLISH LANGUAGE. Illustrated by EXTRACTS. For Schools and Private STUDENTS. By WILLIAM SPALDING, AM, Professor of Logic, Rhetoric, and Metaphysics, in the University of St Andrews. Continued to 1870. 3s. 6d. Spectator...
الصفحة 330 - ... proportion of the carbon, silicon, and phosphorus, as well as most of the sulphur. The quantity of phosphorus (0*298 per cent.) retained by the sample of crude steel from the converter which I...
الصفحة 327 - In about two minutes,' writes the Professor in his preliminary report, dated the I4th of October, 'a reaction commenced. At first a moderate quantity of brown nitrous fumes escaped; these were followed by copious blackish, then grey, then whitish fumes, produced by the escape of steam, carrying with it in suspension a portion of the flux. After the lapse of five or six minutes...
الصفحة 403 - A Dictionary of the English Language, containing the Pronunciation, Etymology, and Explanation of all Words authorized by Eminent Writers. To which are added, a Vocabulary of the Roots of English Words, and an accented list of Greek, Latin, and Scripture Proper Names.
الصفحة 330 - I2'6 per cent, of iron in the slag would not be more than 3 per cent, of the iron operated on. '"In conclusion, I have no hesitation in stating that Heaton's process is based upon correct chemical principles : the mode of attaining the result is both simple and rapid. The nitric acid of the nitrate in this operation imparts oxygen to the impurities always present in cast iron, converting them into compounds which combine with the sodium ; and these are removed with the sodium in the slag. This action...
الصفحة 327 - After the lapse of five or six minutes, a violent deflagration occurred, attended with a loud roaring noise and a burst of a brilliant yellow flame from the top of the chimney. This lasted for about 1\ minutes, and then subsided as rapidly as it commenced.
الصفحة 404 - ... M'DOWALL, late Inspector of the Heriot Schools, Edinburgh. 2s. 6d. Object-Lesson Cards on the Vegetable Kingdom. Set of Twenty in a Box. £1, Is. The design of this Series is to give a short description of some Plants ,which are cultivated for their useful properties, each subject being illustrated with specimens (attached to the Cards) of the various objects described, and forming in this department an interesting Industrial Museum, which will be found of great value in the education of the...
الصفحة 125 - ... is required to effect the gradual cooling of the products of combustion, and only a small portion near the top, perhaps a fourth of the whole mass, is heated uniformly to the full temperature of the flame ; the heat of the lower portion decreasing gradually downwards, nearly to the bottom. Three or four times as much brickwork is thus required in the regenerators, as is equal in capacity for heat to the products of combustion. " The best size and arrangement of the bricks is determined by the...
الصفحة 63 - Figs. 1 and 4 ; and this arrangement accounts for the power of the steam to overcome the resistance to its entrance into the receiving pipe below : for the jet of steam being concentrated on the water at I forces its way through the interval L surrounded by the feed water, by contact with which it is gradually condensed and reduced in volume and velocity until it is entirely converted into water at the throat K ; while by this contact with the steam from I to K the feed water has a velocity imparted...
الصفحة 30 - Each boiler had a heating surface of 293 square feet, and 12 square feet of surface. Both were new, and had never been before heated. They were set alike in brickwork, one above the other, but entirely separated by masonry ; the gaseous products of combustion passed through a single flue underneath each boiler, and passed directly into the same chimney. At first both boilers were filled, and fires were kept under them for several days in order to dry the brickwork, after which the fires were extinguished...

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