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ENGLISH 波多野结衣洗脑潜入搜查官At seven o'clock in the evening I entered Lige; and so far I had achieved my end.From Vis I went again across the Meuse to the road along the canal. Nearing Haccourt, I noticed that Fort Pontisse was actually silent, but Lierce still in full action. The Germans had mounted long-range guns on the hills between Lancey and Haccourt, whence they could place Fort Lierce under fire. A German officer, after some coaxing, allowed me to witness the operations for a short time. I found a place near some heavy guns, and sat down amid some underwood. The shooting from Lierce was very fierce, but only by the plumes of smoke could I tell whereabouts the fort might be. The shells came down near us, but during the half hour of my stop not one made a hit. They all fell short of us.Among exceptions to the ordinary plans of constructing trip-hammers, may be mentioned those employed in the American Armoury at Springfield, U.S., where small hammers with rigid frames and helves, the latter thirty inches long, forged from Lowmoor iron, are run at a speed of 'six hundred blows a minute.' As an example, however, they prove the necessity for elasticity, because the helves and other parts have to be often renewed, although the duty performed is very light, such as making small screws.

Having got them, several officers examined my credentials, and their faces showed that the horizon was a little clearer for me.Other soldiers kept on running into the burning houses, carrying out vases, pictures, plate, or small pieces of furniture. They smashed everything on81 the cobbles and then returned to wreck more things that would have been destroyed by the fire all the same. It was a revelry of drunken vandalism. They seemed mad, and even risked being burned alive at this work of destruction. Most of the officers were also tipsy; not one of them was saluted by the soldiers.

The Germans did themselves great injury undoubtedly by their vulgar and barbarous demeanour, for that lost them every claim on the sympathy of the people.(1.) What limits the speed at which the reciprocating parts of machines may act?(2.) What is the nature of reciprocal motion produced by cranks?(3.) Can reciprocating movement be uniform in such [108] machines as power-hammers, saws, or pumps?(4.) What effect as to the rate of movement is produced by the elastic connections of a trip-hammer?By refusing to pay at cafs and shops the military already expressed their dissatisfaction. Then on Thursday, August 20th, about six in the evening, after a great many troops had crossed the river by the pontoon bridge, a shot was heard which seemed the sign for a terrible fusillade. Guns seemed to have been mounted at convenient places outside151 the town, for shells exploded right at its centre. The troops did no longer cross the bridge, but spread themselves in a disorderly manner all over the town, constantly shooting at the windows. Even mitrailleuses were brought into action. Those of the inhabitants who could fly did so, but many were killed in the streets and others perished by bullets entering the houses through the windows. Many others were shot in the cellars, for the soldiers forced their way in, in order to loot the bottles of wine and to swallow their fill of liquor, with the result that very soon the whole garrison was a tipsy mob.

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Count Rumford did not by chance develope the philosophy of forces upon which we may say the whole science of dynamics now rests; he set out upon a methodical plan to demonstrate conceptions that were already matured in his mind, and to verify principles which he had assumed by inductive reasoning. The greater part of really good and substantial improvements, such as have performed any considerable part in developing modern mechanical engineering, have come through this course of first dealing with primary principles, instead of groping about blindly after mechanical expedients, and present circumstances point to a time not far distant when chance discovery will quite disappear."On August 14th, at about four o'clock in the afternoon, the expected storm burst; for twenty-five hours the invisible siege-guns poured their torrent of projectiles on the fort. Flares of fire and dense clouds of smoke belched through the crevices. As the enemy's batteries could not be located, their fire could not be answered. The artillerists of the garrison were then taken to the spacious chief gallery, which offered a safe refuge under its vault, about two and a half to three yards thick. Outside the sentries were watching. In the parts near the entrance it was unendurable; the heavy projectiles from the guns mounted in the town had nibbled away the outer wall, only a yard and a half thick. There were as yet no casualties among the garrison; calmly they waited for the infernal tempest to subside and the enemy to storm the fort, for they had sworn to repulse the assault.The inhabitants had already had a variety of experiences. On Tuesday, August 4th, the first German troops arrived before the little town. The gendarmes stationed there offered resistance to the invading enemy, but, being hopelessly outnumbered, they were all shot down. As they were lying on the ground, badly wounded, Dr. Frits Goffin, head of St. Hadelin College, came in great haste as soon as he heard the shooting.

CHAPTER XXI. MECHANICAL DRAWING.The faces of the dies remain parallel, no matter how large the piece may be that is operated upon, while with a trip-hammer, the top die moves in an arc described from the trunnions of the helve, and the faces of the dies can only be parallel when in one position, or when operating on pieces of a certain depth. This feature of parallel movement with the dies of crank-hammers is of great importance on some kinds of work, and especially so for machine-forgings where the size or depth of the work is continually being varied."To the inhabitants of the City of Louvain

The whole town was like a sea of fire. The Germans, who are nothing if not thorough, even in the matter of arson, had worked out their scheme in great detail. In most houses they had poured some benzine or paraffin on the floor, put a lighted match to it, and thrown a small black disc, the size of a farthing, on the burning spot, and then immediately the flames flared up with incredible fury. I do not know the constituents of this particular product of "Kultur."A carriage moving on angular ways always moves steadily and easily, without play in any direction until lifted from its bearing, which rarely happens, and its lifting is easily opposed by adjustable gibs. A carriage on a flat shear is apt to have play in a horizontal direction because of the freedom which must exist to secure easy movement. In the case of tracks, it may also be mentioned that the weight of a carriage acts as a constant force to hold it steady, while with a flat shear the weight of a carriage is in a sense opposed to the ways, and has no useful effect in steadying or guiding. The rigidity and steadiness of tool movement is notoriously in favour of triangular tracks, so much so that nearly all American machine tool-makers construct lathes in this manner, although it adds no inconsiderable cost in fitting.Outside Cherath a motor-car stood between some partially removed trees. Two officers and three soldiers stood around a map which they had laid on the ground, and with them was a young girl, scarcely twenty years old. She was weeping, and pointed out something on the map, obviously compelled to give information. One of the officers stopped me, was clearly quite satisfied with my papers, but told me that I was not allowed to go on without a permit from the military command. Then I pulled out of my pocket, as if of great importance, the scrap of paper which the commanding officer at the bridge near Lixhe had given me. The other had scarcely seen the German letters and German stamp when he nodded his head approvingly, and quickly I put the thing back, so that he might not notice that I was allowed only to go to Vis.

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"In Cherath she saved the life of a good many. As it was alleged that there had been shooting, the priest, the chaplain, a retired priest, eighty years old, the mayor, and several leading citizens were condemned to be shot. None, not even the priest, was able to defend himself, as they knew not a word of German, and could not make themselves understood. Mrs. de Villers, who speaks German fluently, explained that the spot where the shooting was alleged to have taken place was not part of Cherath at all.Tools should never be tempered by immersing their edges or cutting parts in the bath, and then allowing the heat to "run down" to attain a proper temper at the edge. I am well aware that this is attacking a general custom, but it is none the less wrong for that reason. Tools so hardened have a gradually diminishing temper from their point or edge, so that no part is properly tempered, and they require continual re-hardening, which spoils the steel; besides, the extreme edge, the only part which is tempered to a proper shade, is usually spoiled by heating and must be ground away to begin with. No latheman who has once had a set of tools tempered throughout by slow drawing, either in an oven, or on a hot plate, will ever consent to point hardening afterwards. A plate of iron, two to two and one-half inches thick, placed over the top of a tool dressing fire, makes a convenient arrangement for tempering tools, besides adding greatly to the convenience of slow heating, which is almost as important as slow drawing. The writer has by actual experiment determined that the amount of tool dressing [117] and tempering, to say nothing of time wasted in grinding tools, may in ordinary machine fitting be reduced one-third by "oven tempering."

A beginner, unless he exercises great care in the pencil-work of a drawing, will have the disappointment to find the paper soon becoming dirty from plumbago, and the pencil-lines crossing each other everywhere, so as to give the whole a slovenly appearance. He will also, unless he understands the nature of the operations in which he is engaged, make the mistake of regarding the pencil-work as an unimportant part, instead [82]of constituting, as it does, the main drawing, and thereby neglect that accuracy which alone can make either a good-looking or a valuable one.CHAPTER XIX. THE ARRANGEMENT OF ENGINEERING ESTABLISHMENTS.

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Apr-21 12:12:05