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Scientific American, Vol. 60, No. 13 (1889) (1889)
leaf 4
the nut by engagement with the of the casing, and the cam transversely thereto, which boss of the washer prevent any back motion of the nut. forces apart the gripping fingers, dropping the ring therefrom. To attach the animals again, the ring is in- —_______—~0-+@ +. -_____ AN IMPROVED ROTARY… … mounted to turn freely on a gudgeon BROWN’S ROTARY HARROW. held within a block, and this block © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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