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Scientific American, Vol. 97, No. 21 (November 1907) (1907)
leaf 10
d these are said to be not only ate, enabling all possible advantage to be taken of prises means for closing the air-brake pipes whenever very extensive but of very good quality. The ore oc- strong winds. It will be observed that the elevator desired, as when making up a train. The couplers A curs… … raises water on the principle of Archimedes's screw. IMPROVED DITCHING PLOW. AUTOMATIC COUPLER FOR AIR-BRAKE PIPES. © 1907 SCIENTIFIC AMERICAN, INC.Shipments · Cubic · Lumber · Airship · Automobile · Patents · Scientific American · Corresponding · Water elevator · Cent larger · Cubic yards · Cold water · Net tons · Years ago · Cortlandt street · Wireless telegraph · Steam Shovel
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