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Scientific American, Vol. 38, No. 20 (May 1878) (1878)

leaf 3

An illustration from Scientific American, Vol. 38, No. 20 (May 1878), 1878, leaf 3
ing shaft by means of a universal joint, so fifteen degrees or so, and at an elevation of a couple of hun- Why elderly people should persistently stare at these, toys that, in whatever position the rudder may be placed, the dred feet. Professional rope walkers, when they essay a is… … THE KUNSTADTER RUDDER SCREW. © 1878 SCIENTIFIC AMERICAN, INC

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