. Bulletin. Science. Figure 37.—Schematic diagram of the Edoux system. (Adapted from Gustave Eiffel, ia Tour de Trois Cents Metres, Paris, 1900, p. 175.) Figure 38.—Vertical section through lower (suspended) Edoux car, showing Backmann helicoidal safety brake. (Adapted from Gus- tave Eiffel, La Tour Eiffel en igoo, Paris, 1902, p. 12.) A curiosity in connection with the Edoux system was the use of Worthington (American) pumps (fig. 40) to carry the water exhausted from the cylinders back to the supply tanks. No record has been found that might explain why this particular exception was made to
. Bulletin. Science. Figure 37.—Schematic diagram of the Edoux system. (Adapted from Gustave Eiffel, ia Tour de Trois Cents Metres, Paris, 1900, p. 175.) Figure 38.—Vertical section through lower (suspended) Edoux car, showing Backmann helicoidal safety brake. (Adapted from Gus- tave Eiffel, La Tour Eiffel en igoo, Paris, 1902, p. 12.) A curiosity in connection with the Edoux system was the use of Worthington (American) pumps (fig. 40) to carry the water exhausted from the cylinders back to the supply tanks. No record has been found that might explain why this particular exception was made to the "foreign materials" stipulation. This exception is even more strange in view of Otis' futile request for the same pumps and the fact that any number of native machines must have been available. It is possible that Edoux's personal influence was sufficient to overcome the authority of the regulation. PAPER 19: EIEVATOR SYSTEMS OF THE EIFFEL TOWER 37. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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