The Science And Art of the Manufacture of Portland Cement With Observations On
The book The Science And Art of the Manufacture of Portland Cement With Observations On was written by author Henry Reid Here you can read free online of The Science And Art of the Manufacture of Portland Cement With Observations On book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Science And Art of the Manufacture of Portland Cement With Observations On a good or bad book?
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spindle. On the remaining portion of the spindle is accu- rately fixed a cast-iron cross-head, on which is hung the cross-bar of the runner. On the top of the cross-head, where the two pins shown on Fig. 20 are placed, the damsel, or apparatus for beating and regulating the supply to the stone, is fixed, and plays between the shoe or shoot which is placed under the hopper, A. The adjustment of this simple part of the machine is secured by a piece of steel which acts as a spring, and its pressur...e may MILLSTONES. be increased or diminished according to the capacity of the millstone to receive the contents of the hopper, or, in other words, to feed them with regularity and not overload them, which leads to congestion, stoppage, and, when carelessly arranged, breakage. The nice point to be considered here is that the stones shall receive just as much, and no more, than they are competent to reduce. When freshly dressed, the amount of work is greater than when worn and smooth, for the furrows are then more or less worn down, when their grinding capacity is sensibly reduced.
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