Scientific American Supplement, No. 620, November 19,1887 by Various
page 16 of 138 (11%)
page 16 of 138 (11%)
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intimates, "conflicting national pride" has led the major part of
British writers to suppress the truth as to the origin of the high pressure steam engine, the locomotive, and the steam railway system, surely true national pride should induce the countrymen of Oliver Evans to assert it. In closing this paper the writer will say, for the information of the so-called "practical" men of the country, or, in other words, those men whose judgment of an invention is mainly guided by its money value, that Poor's Manual of Railroads in the United States for 1886 puts their capital stock and their debts at over $8,162,000,000. The value of the steamships and steamboats actuated by the high pressure steam engine the writer has no means of ascertaining. Neither can he appraise the factories and other plants in the United States--to say nothing of the rest of the world--in which the high pressure steam engine forms the motive power. * * * * * AUGUSTE'S ENDLESS STONE SAW. It does not seem as if the band or endless saw should render the same services in sawing stone as in working wood and metals, for the reason that quite a great stress is necessary to cause the advance of the stone (which is in most cases very heavy) against the blade. Mr. A. Auguste, however, has not stopped at such a consideration, or, better, he has got round the difficulty by holding the block stationary and making the blade act horizontally. Fig. 1 gives a |
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