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Scientific American, Vol. 46, No. 3 (1882) (1882)

leaf 3

An illustration from Scientific American, Vol. 46, No. 3 (1882), 1882, leaf 3
. spike so that it is not bent in driving or extracting. This were seen upon the plates exposed upon the screen, as well A circular motion is then given to it, and by revolving it rib also strengthens the head, so that it is not liable to break as upon those which had been exposed upon the sitter… … , NEW RAILROAD SPIKE, MILLAR’S SASH-CORD GUIDE. 100 c.c. 1,600 pounds more than the common spike to draw it out of John Street, Baltimore, Md. This guide or pulley can be 5 grammes. “e the tie, while it weighs less than the standard spike. i more cheaply made than other styles of pulley, and can be…

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