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Seite 16 - Esq., who returned his best thanks to the Members for the honour they had done him in electing him to the office of President...
Seite 97 - Vice-President, in the Chair. The Minutes of the last General Meeting were read and confirmed. The Secretary then read the following ANNUAL REPORT OF THE COUNCIL.
Seite 7 - Council in rotation, will go out of office this day, according to the rules of the Institution ; and the ballot will be taken at the present annual meeting for the election of the Officers and Council for the ensuing year.
Seite 34 - ... accepted theory of the mutual convertibility of heat and power, by which according to Joule's results one unit of heat (the quantity of heat required to raise the temperature of 1 Ib. of water 1° Fahr.) was equivalent to or became converted into a power of 770 ft.-lbs.
Seite 149 - ... the passing through that the combination of the impurities of the metal with the alkaline earths takes place, so that the decarbonized iron, on reaching the bottom of the crucible, is cleansed from all impurities. The heat, continuing to increase, melts the outside portions of the granules, and the whole is reduced to one homogeneous fluid mass in the crucible, which is then ready for being poured into the ingot moulds.
Seite 149 - ... crucibles and placed in the furnaces and brought into a fluid state. The degree of hardness of the steel is thus capable of being regulated by the size of the granules and by the quantity of oxides used. The chemical change which takes place in the crucible is as follows.
Seite 150 - The process is attended with the following advantages: — A rapid manufacture of cast steel, the pig iron being turned into cast steel in the space of a few hours; certainty in producing a uniform quality of steel, that is, steel containing a determinate proportion of carbon, which is accurately determined beforehand by the weight of oxide mixed with the granulated iron ; and less cost than the ordinary methods of making cast steel, since the processes are fewer and the materials used are simply...
Seite 113 - The length of a pendulum beating seconds in a vacuum at the level of the sea in the latitude of London.
Seite 125 - ... which can be accounted for only by the fact that the open-topped furnace has the advantage of a large amount of surplus heat, due to the combustion of the waste gases at its throat, which serves to dispel moisture and calcine the limestone, and helps to warm up the large pieces of ironstone : all of which operations in the closetopped furnace are effected only at a lower point of the furnace, thus necessitating a larger consumption of coke. With the same proportion of ironstone to limestone,...
Seite 34 - ... the valves themselves are allowed to stick through want of cleanliness, from the attendant not taking care to remove the oil, which sometimes becomes clotted round the valves. Each of these presses is capable of producing 36 cwt. of cake per day of 11 hours, and the yield of oil may be taken at about 14 cwt.

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