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Scientific American, Vol. 81, No. 15 (1899) (1899)
leaf 7
ince this time the movement has 60,000-pound capacity trucks, heavy bridge timbers be- ing movement, were also to be cut up into moving sub- ing interposed between the bottom sills of the building not only surely and gradually developed throughout sections for traps and the like. For the third and… … spectator as the strange weight is taken off from © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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