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在线不卡日本v二区-亚洲高清自有码中文字-亚洲高清有码中文字

时间: 2019年12月09日 22:26

� What鈥攜ou don't mean that she made away with herself? said the carpenter, raising his hands. Horatia. We would preserve you. Seguin designed his first Gnome rotary as a 34 horse-power engine when run at a speed of 1,300 revolutions per minute. It had five cylinders, and the weight was 3鈥? lbs. per horse-power. A seven-cylinder model soon displaced this first engine, and this latter, with a total weight of 165 lbs., gave 61鈥? horse-power. The cylinders were machined out of solid nickel chrome-steel ingots, and the machining was carried out so that the cylinder walls were under ? of an inch in thickness. The pistons were cast-iron, fitted each with two rings, and the automatic inlet valve to the cylinder was placed in the crown of the piston. The connecting rods, of 鈥楬鈥?section, were of nickel chrome-steel, and the large end of one rod, known as the 鈥榤aster-rod鈥?embraced the crank pin; on the end of this rod six hollow steel pins were carried, and to these the remaining six connecting-rods were attached. The crankshaft of the engine was made of nickel chrome-steel, and was in two parts connected together at the crank pin; these two parts, after the master-rod had been placed in position and the other connecting rods had been attached to it, were firmly secured. The steel crank case was made in five parts, the two central ones holding the cylinders in place, and on one side another of the five castings formed a cam-box, to the outside of which was secured the extension to which the air-screw was attached. On the other side of the crank case another432 casting carried the thrust-box, and the whole crank case, with its cylinders and gear, was carried on the fixed crank shaft by means of four ball-bearings, one of which also took the axial thrust of the air-screw. Lord Seely was not accustomed to be told that he was under an entire misapprehension on any subject. Mr. Errington, said the surveyor, "I am speaking to you, not officially, but confidentially, and as man to man. I have been having a little conversation with Mr. Gibbs鈥攚ho seems to have none but good feeling towards you, but who鈥攊n short, I think it is not needful to be more explicit. I advise you in all friendliness to be stern and decisive in keeping every person out of this office except such as have recognised business to be here. If further trouble arises, I shall have to do my duty, and make my report without respect of any persons whatsoever." 在线不卡日本v二区-亚洲高清自有码中文字-亚洲高清有码中文字 CHAPTER IV. The result is remarkable, being less than 2 lbs. weight per horse-power, especially when one considers the state of development to which the steam engine had attained at the time these experiments were made. The fining down of the internal combustion engine, which has done so much to solve the problems of power in relation to weight for use with aircraft, had not then been begun, and Maxim had nothing to guide him, so far as work on the part of his predecessors was concerned, save the experimental engines of Stringfellow, which, being constructed on so small a scale in comparison with his own, afforded little guidance. Concerning the factor of power, he says: 鈥榃hen first designing this386 engine, I did not know how much power I might require from it. I thought that in some cases it might be necessary to allow the high-pressure steam to enter the low-pressure cylinder direct, but as this would involve a considerable loss, I constructed a species of injector. This injector may be so adjusted that when the steam in the boiler rises above a certain predetermined point, say 300 lbs., to the square inch, it opens a valve and escapes past the high-pressure cylinder instead of blowing off at the safety valve. In escaping through this valve, a fall of about 200 lbs. pressure per square inch is made to do work on the surrounding steam and drive it forward in the pipe, producing a pressure on the low-pressure piston considerably higher than the back-pressure on the high-pressure piston. In this way a portion of the work which would otherwise be lost is utilised, and it is possible, with an unlimited supply of steam, to cause the engines to develop an enormous amount of power.鈥? � Now gently-falling dews refresh the earth, �