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The shrill clatter of the telephone bell tinkled in the next room. The ring was repeated in a few seconds imperiously.<024>
THREE:2. Plans of adaptation and arrangement of the component parts of the machinery, or organisation as it may be called.CHAPTER XII
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TWO:By destroying the life and possessions of peaceful civilians the Germanswho always boast so much about their military honourgave unconscious expression to their awe of the fearless heroes who still stood their ground to the north of Lige, whilst the Germans were still besieging Antwerp.
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ONE:Machinery of transmission being generally a part of the fixed plant of an establishment, experiments cannot be made to institute comparisons, as in the case of machines; besides, there are special or local considerationssuch as noise, danger, freezing, and distanceto be taken into account, which prevent any rules of general application. Yet in every case it may be assumed that some particular plan of transmitting power is better than any other, and that plan can best be determined by studying, first, the principles of different kinds of mechanism and its adaptation to the special conditions that exist; and secondly, precedents or examples.
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TWO:Ho-ho-ho-ho! Thats good. Suspicious Sandyis that somebody inside the hangar? Dick changed his tone suddenly, dropping his voice to a whisper as he stooped and saw something move behind the old amphibian at the back of the building.



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< 102The term gearing, which was once applied to wheels, shafts, and the general mechanism of mills and factories, has now in common use become restricted to tooth wheels, and is in this sense employed here. Gearing as a means of transmitting motion is employed when the movement of machines, or the parts of machines, must remain relatively the same, as in the case of the traversing screw of an engine lathewhen a heavy force is transmitted between shafts that are near to each other, or when shafts to be connected are arranged at angles with each other. This rule is of course not constant, except as to cases where positive relative motion has to be maintained. Noise, and the liability to sudden obstruction, may be reasons for not employing tooth wheels in many cases when the distance between and the position of shafts would render such a connection the most durable and cheap. Gearing under ordinary strain, within limited speed, and when other conditions admit of its use, is the cheapest and most durable mechanism for transmitting power; but the amount of gearing employed in machinery, especially in Europe, is no doubt far greater than it will be in future, when belts are better understood.Keeping this in view, and referring to an ordinary planing machine with which the reader is presumed to be familiar, the focal point of the cutting strain is at the edge of the tools, and radiates from this point as from a centre to the various parts of the machine frame, and through the joints fixed and movable between the tools and the frame; to follow back from this cutting point through the mechanism to the frame proper; first starting with the tool and its supports and going to the main frame; then starting from the material to be planed, and following back in the other direction, until we reach the point where the strains are absorbed by the main frame, examining the joints which intervene in the two cases, there will appear some reasons for running carriages."You poor little soul?" Hetty murmured. "Ah, you poor little soul!"
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