Transactions of the Institution of Engineers in Scotland: 1857, Bände 1-3W. Mackenzie, 1858 |
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adopted amount Anderston angle apparatus arrangement bars beam boiler Caledonian Railway calorimeter canal cast-iron centre centrifugal pumps Clyde coal coal gas coke combustion condensation connected constructed crank curve cylinder diagrams diameter economy effect engine evaporated expansion experiments feet fire-box flue following paper fracture friction fuel furnace gearing girders Glasgow Greenock heat horse power improvement increased Institution invention iron James Kilmarnock latent heat LAWRIE length lever locomotive machine means measure meeting Messrs miles motion NAPIER Napier & Sons NEIL ROBSON obtained ordinary patent PATRICK STIRLING pinion pipe piston Plate present PRESIDENT pressure quantity railway Rankine revolutions per minute rods Scotland screw Session shaft ship slip smoke speed steam steam-engine steamers Street stroke sufficient superheated supply surface surface condenser temperature tons valve velocity vessel vote of thanks WALTER NEILSON weight wheel whilst whirlpool Whiteinch William writer
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Seite 43 - ... Then the owners made the astounding proposal to wipe off the stain of the vessel's apparent guilt by offering to pay in money all losses which were sustained in the matter by the owners of the ill-fated " Northfleet." This offer was indignantly rejected, and the owners of the " Murillo " seem to have come to the conclusion that the best thing they could do was to send the vessel into English waters to be seized by the English Government. Of course the owners of the lost "Northfleet...
Seite 92 - ... times the throw of the eccentric, its end being connected to the lever. The curved part of the lever is constructed with a radius equal to the length of the eccentric rod, and is furnished with the means of traversing the eccentric rod pin to any part of the arc at pleasure, the admission being increased on its approaching the fulcrum, and vice versa. This is effected in the simplest manner, by means of a screw and hand wheel attached near the fulcrum of the lever, and acting...
Seite 91 - ... the energy of motion given up in the diminution of velocity being converted into water pressure. It is by this conversion of energy of motion into water pressure, through the medium of the exterior whirlpool, that a decided increase in the working efficiency of the centrifugal pump is attained ; the work contained in the rapid motion of the water leaving the wheel, which in centrifugal pumps as ordinarily constructed is wasted, being in the improved pump usefully employed in increasing the pumping...
Seite 91 - ... water or forcing it against a pressure, the water necessarily has a considerable tangential velocity on leaving the circumference of the wheel. This velocity in wheels in which the vanes or blades are straight and radial, is the same as that of the circumference of the wheel ; in others, in which the vanes are curved backwards, it is somewhat less ; but in all cases it is so great that the water on leaving the wheel carries away, in its energy of motion, a large and important part of the work...
Seite 91 - In centrifugal pumps, when doing actual work in raising water or forcing it against a pressure, the water necessarily has a considerable tangential velocity on leaving the circumference of the wheel. This velocity in wheels in which the vanes or blades are straight and radial, is the same as that of the circumference of the wheel ; in others, in which the vanes are curved backwards, it is somewhat less ; but in all cases it is so great that the water on leaving the wheel carries away, in its energy...
Seite 107 - The formulas are framed on the supposition, that the admission of air and the management of the fire are such, that no appreciable loss occurs, either from imperfect combustion or from excess of air ; the construction and proportions of the furnace, and the mode of using it, being the best possible for each kind of coal.* The Evaporative Power is stated in pounds of water supplied and evapo.
Seite 85 - ... if the knowledge thereof shall have been obtained surreptitiously or in fraud of the inventor, or shall have been communicated to the public in fraud of the inventor, or in breach of confidence. Provided that the inventor shall, within six months after the commencement of such public use, apply for a grant of exclusive privileges and shall not previously have acquiesced in such public use.