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    Software name: appdown
    Software type: Microsoft Framwork

    size: 401MB

    Lanuage:Englist

    Software instructions

      "None," he admitted, "but I was not out."


      With these conclusions in his mind, but little progress will be made, and hence the reason for introducing the subject here.


      For loading and unloading carts and waggons, the convenience of the old outside sling is well known; it is also a well-attested fact that accidents rarely happen with sling hoists, although they appear to be less safe than running platforms or lifts. As a general rule, the most dangerous machinery for handling or raising material is that which pretends to dispense with the care and vigilance of attendants, and the safest machinery that which enforces such attention. The condition which leads to danger in hoisting machinery is, that the power employed is opposed to the force of gravity, and as the force of gravity is acting continually, it is always ready to take advantage of the least cessation in the opposing force employed, and thus drag away the weight for which the two forces are contending; as a weight when under the influence of gravity is moved [65] at an accelerated velocity, if gravity becomes the master, the result is generally a serious accident. Lifting may be considered a case wherein the contrivances of man are brought to bear in overcoming or opposing a natural force; the imperfect force of the machinery is liable to accident or interruption, but gravity never fails to act. Acting on every piece of matter in proportion to its weight must be some force opposing and equal to that of gravity; for example, a piece of iron lying on a bench is opposed by the bench and held in resistance to gravity, and to move this piece of iron we have to substitute some opposing force, like that of the hands or lifting mechanism, to overcome gravity."Like whom?"

      "Why, in outward manner, yes; but, Smith, he was raised to be a Catholic priest. I could a heap-sight easier trust him if he'd sometimes show distrust, himself. If he ever does I've never seen it. And yet--Oh, we're the best of friends, and I'm speaking now only as a friend and toe a friend. Oh, if it wa'n't for just one thing, I could admit what Major Harper said of him not ten minutes ago to me; that you never finish talking to Ned Ferry without feeling a little brighter, happier and cleaner than when you began; whereas talking with some men it's just the reverse."A standard of lineal measures, however, cannot be taken from one country to another, or even transferred from one shop to another without the risk of variation; and it is therefore necessary that such a standard be based upon something in nature to which reference can be made in cases of doubt.


      The two officers glanced sharply at each other. When the General turned again he flushed resentfully. "Have you never resumed your maiden name?"CHAPTER XXXI.

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      Herr Kronin paused, overcome by deep distress. His eyes behind the big glasses looked appealingly at Bruce."But it is so," protested Arthur. "You didn't see him as I did. He was like nothing on earthand then he began to work. Just like a motor starting. And then that noise began. I'm sure there's something inside him, something that goes wrong sometimes."

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      Power-hammers operated by crank motion, adapted to the lighter kinds of work, are now commonly met with in the forging-shops of engineering establishments. They are usually of very simple construction, and I will mention only two points in regard to such hammers, which might be overlooked by an apprentice in examining them.

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      As molecular adhesion keeps the particles of matter together so as to form solids, so the force of gravity keeps objects in their place; and to attain a proper conception of forces, especially in handling and moving material, it is necessary to familiarise the mind with this thought.The young man laughed and turned to go. "Why doesn't Ned Ferry make her let Gholson alone? He can do it; he's got her round his finger as tight as she's got Gholson round hers."


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