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Scientific American, Vol. 80, No. 24 (1899) (1899)
leaf 7
may be varied from 50 to 275. the shaft, while the outer disks are tightened against tions made at the Boston City Hospital I have seen no A small influence machine, with a single revolving the glass plates by means of large nuts threaded on plate, not shown in the figure, 2 feet in diameter, fast-… … © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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