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ENGLISH 波多野结衣deav"Have they given you back everything?"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 the flowerbeds in front of the station many corpses had been buried, especially those of soldiers who had been killed in the fight near Louvain. The station itself was well guarded, but, thanks to my passport and resolute manner, I gained admission and was finally ushered into the presence of the man who is responsible for the destruction of Louvain, Von Manteuffel.As darkness was coming on I asked him whether it was not dangerous to pass the night in the house of that little old man, whom I mentioned above. He saw nothing dangerous in it, as by far the greater part of the town was deserted, and no attack need be feared.
"Ah well, you come from The Netherlands; tell me whether it is true that you have let the Germans through, allowing them to ravish us? Tell me whether this is true?""Four days ago her husband was buried. As he was addressing the League of Old-Retraitants at Cherath he was seized by a paralytic stroke, which proved fatal. She has no longer a home, beautiful Villa Rustica being completely burnt out, and now in ruins. But she refuses to return to The Netherlands, as she is still able to be of service to the people here.
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The loss of effect by the inertia of the pieces acted upon increases with the weight of the work; not only the loss of power, but also the expense of heating increases with the size of the pieces. There is, however, such a difference in the mechanical conditions between light and heavy forging that for any but a heavy class of work there would be more lost than gained in attempting to operate on both sides of pieces at the same time.
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.Direct action and reaction are equal; if a force is exerted in any direction there must be an equal force acting in the opposite direction; a machine must absorb its own strains.
The most perfect castings for gear wheels and pulleys and other pieces which can be so moulded, are made by drawing the patterns through templates without rapping. These templates are simply plates of metal perforated so that the pattern can be forced through them by screws or levers, leaving the sand intact. Such templates are expensive to begin with, because of the accurate fitting that is required, especially around the teeth of wheels, and the mechanism that is required in drawing the patterns, but when a large number of pieces are to be made from one pattern, such as gear wheels and pulleys, the saving of labour will soon pay for the templates and machinery required, to say nothing of the saving of metal, which often amounts to ten per cent., and the increased value of the castings because of their accuracy.An old smith who has stood at the forge for a score of years will take the same interest in tempering processes that a novice will. When a piece is to be tempered which is liable to spring or break, and the risk is great, he will enter upon it with the same zeal and interest that he would have done when learning his trade.4. The cost of construction and durability.
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The third plan of boring with bars resting in bearings is more extensively practised, and has the largest range of adaptation. A feature of this plan of boring is that the form of the boring-bar, or any imperfection in its bearings, is communicated to the work; a want of straightness in the bar makes tapering holes. This, of course, applies to cases where a bar is fed through fixed bearings placed at one or both ends of a hole to be bored. If a boring-bar is bent, or out of truth between its bearings, the diameter of the hole being governed by the extreme sweep of the cutters is untrue to the same extent, because as the cutters move along and come nearer to the bearings, the bar runs with more truth, forming a tapering hole diminishing toward the rests or bearings. The same rule applies to some extent in chuck-boring, the form of the lathe spindle being communicated to holes bored; but lathe spindles are presumed to be quite perfect compared with boring bars.19
This mode of reasoning will lead to proper estimates of the difference in value between good tools and inferior tools; the results of performance instead of the investment being first considered, because the expenses of operating are, as before assumed, usually ten times as great as the interest on the value of a machine.The road to The Netherlands was strewn over with empty wine-bottles."No, no, sir," the lady said. "Oh, oh, it is so terrible! By and by the Germans will burn Lige and kill us all. She is the little daughter of my brother at Maastricht, and came to visit us a few days before war broke out, but now she will be killed too, for she refuses to go away."
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