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ENGLISH 苍井空出了那双By examining automatic hammers it will be found that their valves are connected to the drop by means of links, producing  coincident movement of the piston and valve, and that the movement of one is contingent upon and governed by the other. It will also be found that these connections or links are capable of extension, so as to alter the relative position of the piston and valve, thereby regulating the range of the blow, but that the movement of the two is reciprocal or in unison. Reasoning inductively, not discovering or inventing, it may be determined that to secure a stamp blow of a hammer-head, the valve must not open or admit steam beneath the piston until a blow is completed and the hammer has stopped.IN LIGE AND BACK TO MAASTRICHT
The road itself had prepared me already in some degree for the horrors I should find there. All the villages through which I passed, excepting Tongres and the townlets of St. Trond, Borgloon, and Tirlemont, were for the greater part burned down or shelled into ruins. The German troops, who had been stoutly resisted during their march through St. Trond and Tirlemont, had attacked in a great rage the civilian population. They set the houses on fire and aimed their rifles at the terror-stricken civilians who fled from them. The men were nearly all killed, but women and children were shot as well.114In constructing patterns where it is optional whether to employ cores or not, and in preparing drawings for castings which may have either a ribbed or a cored section, it is nearly always best to employ cores. The usual estimate of the difference between the cost of moulding rib and cored sections, as well as of skeleton and cored patterns, is wrong. The expense of cores is often balanced by the advantage of having an 'open mould,' that is accessible for repairs or facing, and by the greater durability and convenience of the solid patterns. Taking, for example, a column, or box frame for machinery, that might be made either with a rib or a cored section, it would at first thought seem that patterns for a cored casting would cost much more by reason of the core-boxes; but it must be remembered that in most patterns labour is the principal expense, and what is lost in the extra lumber required for a core-box or in making a solid pattern is in many cases more than represented in the greater amount of labour required to construct a rib pattern.
"Sister," I said then, "if you will only ask S?ur Eulalie to come to this gate she will recognise me, of course?"One thing more must be noticed, a matter of some intricacy, but without which, all that has been explained would fail to give a proper idea of steam-hammer-action. The valve motions are alluded to.
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This makes a statement in brief of what comprehends a knowledge of pattern-making, and what must be understood not only by pattern-makers, but also by mechanical engineers who undertake to design machinery or manage its construction successfully.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.
The soldiers lying round about me, and those in other parts of the station, got up, shouting, "There are the British," and ran towards the arriving trains. They jeered at the beaten enemies in all sorts of vulgar and filthy words, which made the German129 enthusiasm absolutely lacking in chivalry. Eight trains with captured British arrived during that night.
"Then, why did you want to stay at the man's house?what brought you here?""September 1st, 1914."
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A safe rule will be to assume that machinery mainly used and seen by the skilled should be devoid of ornament, and that machinery seen mainly by the unskilled, or in public, should have some ornament. Steam fire engines, sewing machines, and works of a similar kind, which fall under the inspection of the unskilled, are usually arranged with more or less ornament.Anyone who, like myself, has been able to see in what frame of mind the people were during the first days of the German occupation, cannot believe it possible that they would even think of taking up arms. They lived in an unending terror, tried to forestall the invader's demands, and, if anything was requisitioned, they searched each other's houses to see whether anything was kept back and all the demanded bottles of gin or claret were forthcoming. There was not one who did not keep his door open as widely as possible to prove his complete submissiveness, and to let the Germans enter his house at any time to check what was to be found there. Every moment I saw men or women run into the street offering cigars to the soldiers from open boxes, smiling nervously and desperately, trying to behave as unconcernedly as possible. During those early93 days payment for refreshments was accepted hardly anywhere, and people often refused to accept money from me, because they mistook me for a German.
On that occasion the Germans arrested me at about two miles from Tirlemont. Firstly, because I travelled by bicycle, and secondly, because I was accused of having "cooked" one of my passports.Well, I did not quite fancy the prospect of being shot like a dog, and as I had not yet come into touch with the Germans, it was difficult to say whether these people exaggerated or not. But just opposite was Eysden, and I made up my mind to go there for further information.
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