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Scientific American, Vol. 46, No. 20 (1882) (1882)
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our ordina- to recetve the boat, so that, by admitting water from above diameter winding upon a drum 18 feet in diameter draws ry lift locks. Three of theinclines aredouble. This lockat the inclosed level, the boat is raised and floated into the the car up the incline. Bloomfield gives an idea of… … N. J. © 1882 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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