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Scientific American, Vol. 70, No. 3 (1894) (1894)

leaf 3

An illustration from Scientific American, Vol. 70, No. 3 (1894), 1894, leaf 3 — illustrating one of the ball bearings of the pedal the spindle, all properly graduated to suit the differ- ee shaft. The lower portion of the frame is provided ent diameters admitted by this lathe. There are two THE forced draught or thesupply of air under pres- saddles, each having a set of duplex… … © 1894 SCIENTIFIC AMERICAN, INC

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