Proceedings - Institution of Mechanical Engineers, Band 9Institution, 1855 Includes supplements. |
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advantage air cylinder ARCHIBALD SLATE arrangement axis axle box Birmingham blast engine blow boilers bolts capital cargo space cast cent centre CHAIRMAN observed CHARLES BEYER Class collar condensing consequently construction Cost of Coal crank diameter ditto economy equal feet field of view finder fitted fixed fuel furnace gauge grease gross weight hammer HENRY MAUDSLAY high-pressure improved increased indicator diagrams iron JOHN RAMSBOTTOM JOSEPH WHITWORTH lever link motion locomotive London machine machinery and coal Manchester marine engines Messrs moulding Newhall Street nominal horse-power obtained ordinary packing rings pattern per-centage piston piston-rod plate Pole star present pressure Proceedings Inst pump Railway Ratio revolutions per minute right angles SAMPSON LLOYD sand screw shown in Fig side slide space occupied spring square inch steam stroke syphon Table teeth telescope thickness tons total spaces tube tuyere valve motion vertical vessels weight of machinery wheels WILLIAM FAIRBAIRN
Beliebte Passagen
Seite 41 - President, in the Chair. The Minutes of the last General Meeting were read and confirmed. The following Annual Report of the Council was then read : — ANNUAL REPORT OF THE COUNCIL.
Seite 39 - The Papers to be written in the third person, on foolscap paper, on one side only of each page, leaving a clear margin of an inch width on the left side.
Seite 16 - ... there may be some interest attached to the results of some experiments lately made with the view of producing an economical substitute for solid iron rods and bars, such as are mainly employed in the manufacture of fences, railing, hurdles, metallic bedsteads, and many other purposes. The specimens now exhibited, though somewhat crude, serve to elucidate the principle of the process.
Seite 48 - T section of spoke ; the H spoke makes a stronger wheel, but is not easily obtained by the old system. Spur wheels, with shields or flanges to the crown or pitch line, are made with greater facility than by the ordinary process of moulding, as the lower shields are more easily withdrawn, owing to the absence of sand in the centre of the mould. The large, and in some...
Seite 155 - The engines are six in number, two pairs of them being intended to blow air at 2 Ibs. per square inch as a maximum pressure, and the other pair to blow air at 4 Ibs.
Seite 51 - WHEELS. 197 to avoid, if poiiible, any dependence upon hand work in forming the pattern. Mr. Ramsbottom observed that the curve of the tooth in a bevel wheel being different at every portion of its length, on account of the whole tooth being tapered both in breadth and depth, caused the difficulty in cutting it by machinery, as no cutter could be passed through in the ordinary way, except the one fitting the small end of the tooth. Mr. Jackson said that an ingenious arrangement had been made by Mr....
Seite 93 - ... particularly in the application of the expansive principle, combined with higher pressures than had been hitherto generally used. The degree of expansion of the steam was seldom carried at present beyond about three times, but he thought it might be carried up before long to ten times, or even higher, the important economy of which had been so ably shown in the paper read by Mr. Allen. To carry this out thoroughly, so as to obtain the full commercial benefit of the economy that was practicable,...
Seite 47 - ... the pattern is made to move past the cutter, instead of the cutter moving from space to space of the pattern, as before. The following advantages are experienced in moulding by this machine ; — Each wheel being made from a pattern of its own, specially adapted to work into its fellow, and not with reference to any other wheel, the general principle that any two wheels should have the particular form of teeth that will work best together, can be strictly carried out without difficulty, and at...
Seite 86 - The increase in the weight of engines would be found to be about balanced by the decrease in weight of coal required, if the quantity of coal taken was equal to double the gross weight of machinery ; the boilers being supposed to remain the same. In these calculations it must be remembered, that the boilers are supposed to remain the same, and the weight of the engines alone are supposed to increase in the ratio of 1...
Seite 90 - Marine Engines, viz., the increased size, weight, and cost of the Engines. The degree of expansion to which it is necessary to work, in order to obtain great economy, would seem to require an arrangement of Engine different from the ordinary one ; inasmuch as the great variation of pressure from the beginning to the end of the stroke would cause considerable irregularity in the working of an engine where no fly wheel can be employed.