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ENGLISH 也波多野结衣番号大全Trip-hammers employed in forging bear a close analogy to, and were no doubt first suggested by, hand-hammers. Being the oldest of power-forging machines, and extensively employed, it will be proper to notice trip-hammers before steam-hammers.Shaping machines are generally provided with adjustable vices, devices for planing circular forms, and other details which cannot be so conveniently employed with planing machines. Another feature of shaping machines is a positive range of the cutting stroke produced by crank motion, which permits tools to be stopped with precision at any point; this admits of planing  slots, keyways, and such work as cannot well be performed upon common planing machines.(1.) Name the different departments of an engineering establishment.(2.) What does the engineering establishment include?(3.) What does the commercial department include?(4.) The foundry department?(5.) The forging department?(6.) The fitting department?(7.) What does the term shop system mean as generally employed?
The streets and squares where the high military officers had established themselves were closed by cordons of soldiers, and nobody was allowed to pass them.
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During the evening I was granted an audience by the Right Reverend Monseigneur Rutten, Bishop of Lige. The venerable, aged prelate received me very affably, but he was deeply impressed by the terrible fate that had overwhelmed his poor native country. He himself had suffered exceedingly bad treatment at the hands of the Germans. First he and the other hostages were imprisoned in the citadel, where he was locked up in a small shanty, with a leaking roof, so that the torrential rain entered it freely. Wet and cold, the Bishop passed that day without being offered any food, and, as stated above, was at last allowed to go home.
Screw-cutting is divided into two kinds, one where the blanks or pieces to be threaded are supported on centres, the tools held and guided independently of their bearing at the cutting edges, called chasing; the other process is where the blanks have no axial support, and are guided only by dies or cutting tools, called die-cutting.Another principle to be noticed in connection with hammers and forging processes is that of the inertia of the piece operated upona matter of no little importance in the heavier kinds of work.The inhabitants looked upon the church as a special sanctuary, as the bones of St. Hadelin were kept there. Before the fire these relics had been removed to the vicarage secretly, and then to St. Hadelin College, the only large building that escaped the general destruction next day.
But although the Germans are afraid to let the truth be known, there is no reason why I should withhold my evidence. On the contrary, I will try to do everything I can to make public opinion do justice to the unfortunate Belgians, trodden down and insulted, falsely and vilely libelled by their oppressors, and accused of offences of which they never were guilty.The remarks, given in a former place, relating to tools for turning, apply to those for planing as well, except that in planing tools greater rigidity and strength are required.
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I went to bed early, for that day I had again walked from Maastricht to Lige. My little bedroom was quite in the roof of the house, and had evidently been used by a servant.It is also necessary to learn as soon as possible the technicalities pertaining to lathe work, and still more important to learn the conventional modes of performing various operations. Although lathe work includes a large range of operations which are continually varied, yet there are certain plans of performing each that has by long custom become conventional; to gain an acquaintance with these an apprentice should watch the practice of the best workmen, and follow their plans as near as he can, not risking any innovation or change until it has been very carefully considered. Any attempt to introduce new methods, modes of chucking work, setting and grinding tools, or other of the ordinary operations in turning, may not only lead to awkward mistakes, but will at once put a stop to useful information that might otherwise be gained from others. The technical terms employed in describing lathe work are soon learned, generally sooner than they are needed, and are often misapplied, which is worse than to be ignorant of them.
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