Inside Out Library · Explore
Scientific American, Vol. 77, No. 17 (1897) (1897)
leaf 3
ntor of upon the relation of the pitch of the worm to the teeth anvil, while a colossal bronze statue of Tubal Cain will of the gear, or, if motion be suddenly increased, the this propeller. stand in the attitude of swinging an enormous sledge teeth will not follow the spiral of the worm when driv-… … sen when they left the Fram and made a dash for the PERsons in New York may now talk pole. Each article mutely tells the story of hardship, with Council Bluffs, connections just hav- suffering and daring. ing been completed. © 1897 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 77, No. 17 (1897)
More like this
