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Page 19 - Arts, Statistics, Agriculture, &c. ; together with Models, Drawings, or Descriptions of any new and useful Apparatus, or Instruments, applicable to the purposes of Engineering or Surveying.
Page 167 - ... the stern, it would act upon the ship like sculling a boat. Captain Hosken replied, that the Great Britain steered extremely well; and that there was not any tendency to fall off to leeward. The action of the screw could not be correctly compared with that of a scull upon a boat; in that case, the power acted entirely upon the stern ; but with the screw, the power was exerted in the direction of the shaft, up to the engines, in the centre of the ship, and by a simple arrangement it could be carried...
Page 24 - I have only to regret that you had not selected a more competent individual than myself; for in succeeding your late distinguished President, Mr. Walker, who has filled this chair for so long a period with such advantage to the Institution and such credit to himself, and whose universal kindness and urbanity have rendered him so deservedly popular amongst you all, I need not say how greatly I feel my own deficiencies ; I must therefore throw myself upon your indulgence, and endeavour to make up by...
Page 158 - ... feet, and the portions of the arms within the blades, present a similar area of 26-88 feet. As the rotary velocity of the outer edge of the blades is nearly 30 miles an hour, it is important, in order to diminish friction, that they should be as accurately shaped as possible, and should present no irregularities of surface. In this instance, the object was attained, by mounting the screw on a face plate and planing the surface, by means of a tool, to which the proper motion was given ; after...
Page 177 - There were now several steamers longer than the Great Western, and he had never heard that any difficulty had been experienced with them on this important point. So far as he had the opportunity of trying, he would say most decidedly the Great Britain steered easier and better than the Great Western...
Page 159 - As it is very troublesome to lift large cylinder covers, manholes are made in them, and in the pistons, so that the bottoms of the cylinders can be easily examined. The large diameter given to the steam cylinders was purposely with a view to working very expansively, and on the trial recorded, the steam, being at 4 Ibs. pressure in the boiler, was throttled on its passage and cut off by the expansion valve at J th of the stroke, that is, 1 foot from its commencement.
Page 32 - Alderson, MA An Essay on the nature and application of Steam, with an historical notice of the rise and progressive improvement of the Steam Engine.
Page 183 - Manby, after the constructor; and being put together in the Surrey Canal Dock, took in a cargo of rape-seed and iron castings, in the Thames, and landed it at the Pont Royal, at Paris, without transhipment. This unique voyage was performed under the command of Captain Sir Charles Napier, RN, who was largely interested in the undertaking, and devoted much time and his usual skill and energy to the enterprise.
Page 17 - The sizes of Steam Vessels of all classes, whether River or Seagoing, in comparison with their Engine Power; giving the principal dimensions of the Engines aud Vessels, draught of water, tonnage, speed, consumption of fuel, &c.
Page 152 - The tonnage, according to the usual mode of builders' measurement, is therefore, 3,444 tons. The weight of iron used in the hull is about 1040 tons; which is equal to an average thickness of 2^ inches. The weight of the wood-work in the decks, fittings, &c., is about 370 tons. And the weight of the engines and boilers (exclusive of the water) is 520 tons. The total weight, therefore, is 1,930 tons ; which, at a draft of water of 10 feet 6 inches forward, and 13 feet 7 inches aft, corresponds exactly...

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