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    Software name: appdown
    Software type: Microsoft Framwork

    size: 835MB

    Lanuage:Englist

    Software instructions


      On the same day I wrote as follows about Dr. Goffin:"Netherlander or not, it does not matter. Whosoever one be, every civilian is shot down by them."


      "Why not?"

      The faces of the dies remain parallel, no matter how large the piece may be that is operated upon, while with a trip-hammer, the top die moves in an arc described from the trunnions of the helve, and the faces of the dies can only be parallel when in one position, or when operating on pieces of a certain depth. This feature of parallel movement with the dies of crank-hammers is of great importance on some kinds of work, and especially so for machine-forgings where the size or depth of the work is continually being varied.Is it thinkable that persons in that frame of mind would take up arms and invite the enemy's revenge upon themselves and those near and dear to them, a revenge of which they were so mortally afraid?

      As remarked, every attempt to generate anything new in machinery should be commenced by ascertaining a want of improvement. When such a want has been ascertained, attention should be directed first to the principles upon which such want or fault is to be remedied. Proper mechanism can then be supplied like the missing links in a chain. Propositions thus stated may fail to convey the meaning intended; this systematic plan of inventing may be better explained by an example.


      The remarks, given in a former place, relating to tools for turning, apply to those for planing as well, except that in planing tools greater rigidity and strength are required.

      (1.) What is the difference in general between wind and water wheels?(2.) Can the course of wind, like that of water, be diverted and applied at pleasure?(3.) On what principle does wind act against the vanes of a wheel?(4.) How may an analogy between wind-power and heat be traced?"The Reverend Head has been notified already ten times that he would be shot, and he is frequently being arrested for alleged shooting from the building. This shooting is actually done by German soldiers alone, who are loafing and looting, as I myself noticed a short time ago. The Head took me to a room where an old man of ninety, who had just received the extreme unction, lay dying. By his side sat a broken-hearted little old woman, his wife. This old man had been taken prisoner with other men of Vis, and forced to work at a new bridge. The poor fellow broke down under the strain; it cost him his life."

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      To follow this matter further. It will be found in such machines as are directed mainly to augmenting force or increasing the amount of power that may be applied in any operation, such as sawing wood or stone, the effect produced when compared to hand labour is nearly as the difference in the amount of power applied; and the saving that such machines effect is generally in the same proportion. A machine that can expend ten horse-power in performing a certain kind of work, will save ten times as much as a machine directed to the same purpose expending but one horse-power; this of course applies to machines for the performance of the coarser kinds of work, and employed to supplant mere physical effort. In other machines of application, such as are directed mainly to guidance, or speed of action, such as sewing machines, dove-tailing machines, gear-cutting machines, and so on, there is no relation whatever between the increased [59] effect that may be produced and the amount of power expended.

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      Strains caused by cutting action, in planing or other machines, fall within and are resisted by the framing; even when the tools are supported by one frame and the material by another, such frames have to be connected by means of foundations which become a constituent part of the framing in such cases.On August 25th the Antwerp garrison made a sortie, in the direction of Louvain. At the beginning the Belgians were successful, and came within four and a half miles of this town. For a moment the situation became critical, and at about seven o'clock a small troop of cavalry came at a furious gallop from the scene of battle to Louvain, probably to summon the assistance of the garrison.


      alllittle