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The force of gravity acts only in one directionvertically, so that the main force of hoisting and handling machinery which opposes gravity must also act vertically, while the horizontal movement of objects may be accomplished by simply overcoming the friction between them and the surfaces on which they move. This is seen in practice. A force of a hundred pounds may move a loaded truck, which it would require tons to lift; hence the horizontal movements of material may be easily accomplished by hand with the aid of trucks and rollers, so long as it is moved on level planes; but if a weight has to be raised even a single inch by reason of irregularity in floors, the difference between overcoming frictional contact and opposing gravity is at once apparent.

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"I found out by chance," he went on. "A bit of good luck showed me how I had been swindled. But I said nothing--ah, I said nothing, because in this case silence is golden! And nobody knows but myself. Thinks I, that woman is a long way from being played out yet--she has resources. Some people would have made a fuss and cried out and spoilt everything, but not so Maitrank. I come here to get my money and I shall have it, mark you. But I am not easy in my mind."The steam cylinder which moves the hammers is set in the earth at some depth below the plane upon which they move, and even when the heaviest work is done there is no perceptible jar when one is standing near the hammers, as there always is with those which have a vertical movement and are single acting.
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  • ONE:He paused in some confusion. He had the profoundest respect for the cunning and audacity of the people with whom he had to deal. Was this some startling new plot that they had been working on him? TWO:Cores are employed mainly for what may be termed the displacement of metal in moulds. There is no clear line of distinction between cores and moulds, as founding is now conducted; cores may be of green sand, and made to surround the exterior of a piece, as well as to make perforations or to form recesses within it. The term 'core,' in its technical sense, means dried moulds, as distinguished from green sand. Wheels or other castings are said to be cast in cores when the moulds are made in pieces and dried. Supporting and venting cores, and their expansion, are conditions to which especial attention [95] is called. When a core is surrounded with hot metal, it gives off, because of moisture and the burning of the 'wash,' a large amount of gas which must have free means of escape. In the arrangement of cores, therefore, attention must be had to some means of venting, which is generally attained by allowing them to project through the sides of the mould and communicate with the air outside.The German authorities have indeed made inquiries about the matter; I shall deal with that in the next chapter.
  • ONE:The duplicate system has gradually made its way in locomotive engineering, and will no doubt extend to the whole of [150] railway equipment, as constants for dimensions are proved and agreed upon. TWO:Unable to check Dick, his younger chum had to stand, listening while Dick related some of their most recent adventures.
  • ONE:My mysterious companion touched my shoulder198 and asked whether we should not go on. "All right," I said, and we got in again. TWO:We have, thirdly, to consider a form of individualism249 directly opposed in character to those already specified. It is the complete withdrawal from public affairs for the sake of attending exclusively to ones private duties or pleasures. Such individualism is the characteristic weakness of conservatives, who are, by their very nature, the party of timidity and quiescence. To them was addressed the exhortation of Cato, capessenda est respublica. The two other forms of which we have spoken are, on the contrary, diseases of liberalism. We see them exemplified when the leaders of a party are harassed by the perpetual criticism of their professed supporters; or, again, when an election is lost because the votes of the Liberal electors are divided among several candidates. But when a partygenerally the Conservative partyloses an election because its voters will not go to the poll, that is owing to the lazy individualism which shuns political contests altogether. It was of this disease that the public life of Athens really perished; and, so far, Hegel is on the right track; but although its action was more obviously and immediately fatal in antiquity, we are by no means safe from a repetition of the same experience in modern society. Nor can it be said that Plato reacted against an evil which, in his eyes, was an evil only when it deprived a very few properly-qualified persons of political supremacy. With regard to all others he proposed to sanction and systematise what was already becoming a common customnamely, entire withdrawal from the administration of affairs in peace and war. Hegel seems to forget that it is only a single class, and that the smallest, in Platos republic which is not allowed to have any private interests; while the industrial classes, necessarily forming a large majority of the whole population, are not only suffered to retain their property and their families, but are altogether thrown back for mental occupation on the interests arising out of these. The resulting state of things would have found its best parallel, not in old Greek city life, but in modern Europe, as it was between the Reformation and the French Revolution.
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FORE:Ren was silent for a moment. The woman's tongue was getting round him. And the practical part of her story was true.
  • THREE:"I live next door to the corner house," she said. "I could not sleep on the night in question. At a little before five----"

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  • THREE:3. The strains to which shafts are subjected are the torsional strain of transmission, transverse strain from belts and wheels, and strains from accidents, such as the winding of belts.

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  • THREE:The functions and adaptations of machinery constitute, as already explained, the science of mechanical engineering. The functions of a machine are a foundation on which its plans are based; hence machine functions and machine effect are matters to which the attention of an apprentice should first [11] be directed.Air seems to be the most natural and available medium for transmitting and distributing power upon any general system like water or gas, and there is every probability of such a system existing at some future time. The power given out by the expansion of air is not equal to the power consumed in compressing it, but the loss is but insignificant compared with the advantages that may be gained in other ways. There is no subject more interesting, and perhaps few more important for an engineering student to study at this time, than the transmission of power and the transport of material by pneumatic apparatus.

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  • THREE:The road along which I walked, the main road between Vis and Lige, was laid under fire from various forts, and every moment I saw on my left clouds rise up from the rocky heights that run along the whole of the Meuse. These clouds were partly formed by smoke from the guns mounted by the Germans against the forts, partly by volumes of earth thrown up by the projectiles from the broken-up soil.

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  • THREE:Prout felt that he was getting on.The supposed Mr. Everdail scribbled a note which he handed back to Sandy, who caught his idea of dropping instructions on the deck of the yacht.

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  • THREE:Tempering may be called a mystery of the smith-shop; this operation has that attraction which characterises every process that is mysterious, especially such as are connected with, or belong to mechanical manipulation. A strange and perhaps fortunate habit of the mind is to be greatly interested in what is not well understood, and to disregard what is capable of plain demonstration.

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FORE:
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FORE:"And if she does get away?" Isidore asked."At dawn the bombardment started again, but only the front was seriously damaged. The garrison stood as firm as a rock. Here and there the beginnings of a fire were soon extinguished.
FORE:Expedients to avoid dirt in such castings as are to be finished all over or on two sides are various. Careful moulding to avoid loose sand and washing is the first requisite; sinking heads, that rise above the moulds, are commonly employed when castings are of a form which allows the dirt to collect at one point. Moulds for sinking heads are formed by moulders as a rule, but are sometimes provided for by the patterns.So far as he could see there were no signs of dust or desolation about the corner house. The hall was clean and bright, there was a thick carpet on the stairs. Every door was shut save one on the first floor, into which the fair beauty with the lovely hair led the way. Four or five gas jets were flaring away with a hissing roar. A draught from somewhere made them flicker restlessly on a large room absolutely devoid of furniture save for an old-fashioned four-post bedstead in the middle. The air was close and stuffy, as if the window had not been opened for months. There were barred shutters before them.
FORE:
    FORE:Nobody had seen anything of any woman. A light began to dawn upon Ren."That's it," Lawrence said gravely, but with a glance at Hetty that caused her to flush a little. "And the key is like this one. We'll give it to Hetty, and some time when the wicked woman is out of the way she may get the tiny little phial that is in the cabinet so that we can do all kinds of wonderful things with it."
THREE:"Is not that your signature endorsed on every one?" he asked. Sign Up
THREE:They laid the body on a sofa, and the trio left the Corner House. They were very silent as they walked along. Sign Up
FORE:"I would have made some excuse and got away," Leona went on. "But he had me fast. He was going to send me to gaol. That would have been a pretty thing for Countess Lalage! But he only knew me for what I used to be. If I could only get away and destroy the disguise he would never get on my track again. I pretended that I could not fight him any more; I lulled his suspicions to sleep I was going to show him how the forgery was done. He stooped to get me a pen and the knife went into his shoulder. Had he not moved I should have killed him. He managed to creep to the window and give the alarm.""I don't know yet. The things I see ... and ... of course that cannot do harm to the German army."
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FORE:In forming an estimate of the value of his services, an apprentice sees what his hands have performed, compares it with what a skilled man will do, and estimates accordingly, assuming that his earnings are in proportion to what has been done; but this is a mistake, and a very different standard must be assumed to arrive at the true value of such unskilled labour.
This is only a short record of the destruction of Louvain, the truthfulness of which will be firmly and fully established after the war by extensive, accurately drawn up declarations.Scepticism, as a philosophical principle, is alien from early Greek thought; but it is pervaded by a negative tendency exhibited in four different directions, all converging towards the later attitude of suspensive doubt. There are sharp criticisms on the popular mythology; there are protests against the ascription of reality to sensible appearances; there are contemptuous references on the part of some philosophers to the opinions held by others; and there are occasional lamentations over the difficulty of getting at any truth at all. The importance, however, of these last utterances has been considerably exaggerated both in ancient and modern times. For, in some instances, they are attributable solely to the distrust of sense-perception, and in others they seem to express nothing more than a passing mood against which we must set the dogmatic conclusions elsewhere enunciated with perfect confidence by the same thinkers.219 At the same time, we have to note, as an illustration of the standing connexion between theological belief and that kind of scepticism which is shown by distrust in mans power of discovering the truth for himself, that the strongest expressions of such a distrust are to be found in the two most religious of the pre-Socratic thinkers, Xenophanes and Empedocles.Immediately after the church was set on fire, the dean was arrested, as well as the burgomaster and five reverend sisters. These last-mentioned had been in prison a fortnight, when at last the Germans discovered that the little sisters were of German nationality. The Very Reverend Dean had been treated very badly during his captivity.The road was all strewn with straw. I approached the bridge past burning farms and villas. There the pieces of broken furniture were even lying in the road, and I had to go warily so that I should not stumble. The soldiers looked at me as if they were amused, but I went up to them in the same unconcerned manner and asked them to take me to their commanding officer.
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