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Scientific American, Vol. 64, No. 12 (1891) (1891)
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the carriage rear end there are five tanks for water ballast, and connected toit. The back boom isa box girder made up which supports the sheaves. This carriage bears two lifting tackles. Oue is a gantline or single fall, for light since its completion two auxiliary water tanks have of plates and… … © 1891 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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