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The means of supporting cores must be devised, or at least understood, by pattern-makers; these supports consist of 'prints' and 'anchors.' Prints are extensions of the cores, which project through the casting and extend into the sides of the mould, to be held by the sand or by the flask. The prints of cores have duplicates on the patterns, called core prints, which are, or should be, of a different colour from the patterns, so as to distinguish one from the other. The amount of surface required to support cores is dependent upon their weight, or rather upon their cubic contents, because the weight of a core is but a trifling matter [96] compared to its floating force when surrounded by melted metal. An apprentice in studying devices for supporting cores must remember that the main force required is to hold them down, and not to bear their weight. The floating force of a core is as the difference between its weight and that of a solid of metal of the same sizea matter moulders often forget to consider. It is often impossible, from the nature of castings, to have prints large enough to support the cores, and it is then effected by anchors, pieces of iron that stand like braces between the cores and the flasks or pieces of iron imbedded in the sand to receive the strain of the anchors."What do you propose to do, then?"For disadvantages there is, on the other hand, a want of uniformity in fittings that prevents their interchange from one part of a line shaft to the othera matter of great importance, as such exchanges are frequently required. A line shaft, when constructed with pieces of varying diameter, is special machinery, adapted to some particular place or duty, and not a standard product that can be regularly manufactured as a staple article by machinists, and thus afforded at a low price. Pulleys, wheels, bearings, and couplings have all to be specially prepared; and in case of a change, or the extension of lines of shafting, cause annoyance, and frequently no little expense, which may all be avoided by having shafts of uniform diameter. The bearings, besides being of varied strength and proportions, are generally in such cases placed at irregular intervals, and the lengths of the different sections of the shaft are sometimes varied to suit their diameter. With line shafts of uniform diameter, everything pertaining to the shaftsuch as hangers, couplings, pulleys, and bearingsis interchangeable; the pulleys, wheels, bearings, or hangers can be placed at pleasure, or changed from one part of the shaft to another, or from [47] one part of the works to another, as occasion may require. The first cost of a line of shafting of uniform diameter, strong enough for a particular duty, is generally less than that of a shaft consisting of sections varying in size. This may at first seem strange, but a computation of the number of supports required, with the expense of special fitting, will in nearly all cases show a saving.<024> このページの先頭です
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TWO:We must also observe that the parallel drawn by Sir A. Grant between the theology of Aristotle and that of John Stuart Mill is singularly unfortunate. It is in the first place incorrect to say that Mill represented God as benevolent but352 not omnipotent. He only suggested the idea as less inconsistent with facts than other forms of theism.250 In the next place, Aristotles God was almost exactly the reverse of this. He possesses infinite power, but no benevolence at all. He has nothing to do with the internal arrangements of the world, either as creator or as providence. He is, in fact, an egoist of the most transcendent kind, who does nothing but think about himself and his own perfections. Nothing could be more characteristic of the unpractical Aristotelian philosophy; nothing more repugnant to the eager English reformer, the pupil of Bentham and of Plato. And, thirdly, Sir A. Grant takes what is not the God of Aristotles system at all, but a mere abstraction, the immanent reason of Nature, the Form which can never quite conquer Matter, and places it on the same line with a God who, however hypothetical, is nothing if not a person distinct from the world; while, as if to bewilder the unfortunate English reader still further, he adds, in the very next sentence, that the great defect in Aristotles conception of God is the denial that God can be a moral Being.251All right, Larry, let that go. But why did Jeff bring us here?

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TWO:6. The loss of power in a steam-engine arises from the heat carried off in the exhaust steam, loss by radiation, and the friction of the moving parts."Do you know," I asked the officer, "that this old man and his grandchild are starving? He put me up because I gave him a couple of pieces of bread-and-butter for the child." He looked at me somewhat crossly, but inquired all the same whether my information was correct, and then gave the old man two loaves, which dried his tears immediately, and for which he thanked the donor in a quivering voice.

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TWO:Closely connected with the materialism of the Stoics, and equally adverse to the principles of Plato and Aristotle, was their fatalism. In opposition to this, Plotinus proceeds to develop the spiritualistic doctrine of free-will.438 In the previous discussion, we had to notice how closely his arguments resemble those employed by more modern controversialists. We have here to point out no less wide a difference between the two. Instead of presenting free-will as a fact of consciousness which is itself irreconcilable with the dependence of mental on material changes, our philosopher, conversely, infers that the soul must be free both from the conditions of mechanical causation and from the general interdependence of natural forces, because it is an individual substance.439 In truth, the phenomena of volition were handled by the ancient philosophers with a vagueness and a feebleness offering the most singular contrast to their powerful and discriminating grasp of other psychological problems. Of necessarianism, in the modern sense, they had no idea. Aristotle failed to see that, quite apart from external restraints, our choice may conceivably be determined with the utmost rigour by an internal motive; nor could he understand that the circumstances which make a man responsible for his actions do not amount to a release of his conduct from the law of universal causation. In this respect, Plato saw somewhat deeper than his disciple, but created298 fresh confusion by identifying freedom with the supremacy of reason over irrational desire.440 Plotinus generally adopts the Platonist point of view. According to this, the soul is free when she is extricated from the bonds of matter, and determined solely by the conditions of her spiritual existence. Thus virtue is not so much free as identical with freedom; while, contrariwise, vice means enslavement to the affections of the body, and therefore comes under the domain of material causation.441 Yet, again, in criticising the fatalistic theories which represent human actions as entirely predetermined by divine providence, he protests against the ascription of so much that is evil to so good a source, and insists that at least the bad actions of men are due to their own free choice.442

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TWO:Charlton complied without enthusiasm. In a few days he was going to have everything in the Corner House sold, and subsequently dispose of the property altogether. It was a little after four o'clock that he put his key in the latch, and the two entered. A casual glance did not disclose any marks of occupation, but there were traces of food in the kitchen and some utensils had evidently been used.My motor whirled along the gloriously fine road148 to Huy. It is a delicious tour through the beautiful valley of the Meuse, along sloping light-green roads. Had the circumstances not been so sad, I should have enjoyed it better.

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TWO:"Begone!" she cried. "Go, before I do you mischief. See, I help you on with your coat. Now go, and don't let me see that ugly yellow face of yours for a fortnight."
THREE:But soon as Time that bears and nurtures allThere was a little more order in the whole district round Lige, since the Germans behaved more decently, and provisions had arrived. The shock, which the burning and butchering of so many places and persons gave to the whole world, had also influenced the conduct of the Germans, and from the beginning of September they made a practice of asking each time when they thought that they had behaved decently: "Well, are we such barbarians as the world calls us?"
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THREE:(1.) Why does machinery involve so many cylindrical forms?(2.) Why is it desirable to have separate feed gear for turning and screw cutting?(3.) What is gained by the frictional starting gearing now applied to the finer class of lathes?(4.) How may the alignment of a lathe be tested?(5.) What kind of deviation with a lathe carriage will most affect the truth of work performed?(6.) How may an oval hole be bored on a common slide lathe?(7.) How can the angular [128] ways of a lathe and the corresponding grooves in a carriage be planed to fit without employing gauges?(8.) Give the number of teeth in two wheels to cut a screw of ten threads, when a leading screw is four threads per inch?At Zeebrugge the conditions were not alarming. The houses of those who had gone away, however, had been damaged most terribly, and looted. Round the harbour guns were mounted, guarded by many sentries. I was at first forbidden to cross the canal bridge, but my excellent credentials at length made the sentries give in. Everything indicated that already during the first days of the occupation the Germans had begun to execute their plan to turn Zeebrugge into a station for submarines.