Marine Engineer and Motorship Builder, Band 14

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1893

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Seite 167 - Their Royal Highnesses the Prince and Princess of Wales, and the other members of the Royal Family.
Seite 244 - England a patent may be granted, though the thing was practised beyond sea before ; for the statute speaks of new manufactures within this realm ; so that if it be new here, it is within the statute ; for the Act intended to encourage new devices useful to the kingdom, and whether learned by travel or by study, it is the same thing.
Seite 54 - ... and apparent direction of gravity cannot take place without due warning, which will indicate the time and amount of the disturbance. It is therefore only necessary to make the motion of the ballast bear some particular and constant ratio to the motion of this short-period pendulum to keep the balance true. The inertia of a heavy mass will cause some loss of time, as we can only use a limited force for its control, but it is possible to accelerate the phase of motion and overcome this difficulty,...
Seite 109 - ... per cent. Steam from Indicator Diagrams. — The following are the results of measurements made upon the indicator diagrams taken, to ascertain the proportion of steam accounted for by them. The actual weight of net feed-water used by the main engines per revolution was 27 -99 Ibs.
Seite 153 - ... offensive. In sum, a Power which, like England, relies and must rely on naval defence for its security, must make that defence an active one, must regard its maritime frontiers in time of war as being conterminous with the territorial waters of its adversary. What it requires for this purpose is a navy so strong as to be incapable of losing the strategical command of the sea, except through inconceivable treachery or through professional incapacity equally inconceivable. We may rely upon the...
Seite 59 - XXVI., show very clearly how the vibration varies at different speeds, and the variation that takes place in the extent of the vibration when passing from one speed to another. In a vessel, such as a fast Atlantic liner, which is intended to run continuously at a nearly uniform speed (unless special means be taken to balance the machinery), it is of the utmost importance to carefully avoid the number of revolutions of the engines per minute keeping time with or, in other words, synchronising with...
Seite 54 - The manner in which the controlling gear works will be better understood, if we imagine a vessel remaining upright among waves, while near the centre of gravity of the ship we place a short-period pendulum suspended so as to move with little friction ; this will follow the change in the apparent direction of gravity without appreciable loss of time, so that any change in the wave angle and apparent direction of gravity cannot take place without due warning, which will indicate the time and amount...
Seite 275 - KESTERTON mentioned that a marine boiler on thia construction was now being made to work at a pressure of 160 Ibs. per square inch. The...
Seite 292 - This is provided that the propellers may work freely, though they are fitted close to the centre line of the ship in order to prevent damage to or from the quay walls. No struts are fitted at the stern frame to support the outer end of the shafts as in most other twin-screw steamers. These are in the present case dispensed with, and the frames of the hull are bossed out and plated over...
Seite 104 - ... In the present instance the volumetric analysis of each sample was not determined separately, but in several cases three or four samples from the same funnel were mixed together in equal volumes, and the analysis of each of these mixtures was determined, as indicated in the annexed tables. Allowance has been made for this in calculating the mean analyses for each funnel, and for both. Two mercury thermometers of the same description as those -used in former trials were employed to read the temperatures...

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