diameter and supply is furnished by two centrifugal pumps one de livering 2000 gallons a minute into the screen through a perforated pipe and the other supplies water into the distributing box. The gold and fine material passes through the perforated screen into the distributing box and over 300 square feet of standard tables. The sand and small gravel is then delivered behind the dredge by a sluiceway. PAC-SIMILE OF THE NEW UNITED STATES LETTERS PATENT. iron pipes but partly by the old aqueduct known as Solomon's Aqueduct. THE NEW COVER DESIGN FOR UNITED STATES LETTERS PATENT. COL. J. J. ASTOR DEDICATES HIS MARINE TURB INE PATENTS TO THE PUBLIC. details concern ing pumps condenser etc. may be obtained from the Patent Office at Washington by ordering a copy of patent No. 690821 granted to me on marine turbines or from the office of the SCIENTIFIC AMERI CAN 361 Broadway N. Y. city through which agency The French patent is dated September 28 1901; the English patent October 1 1901. New York November 1 1902. J. J. ASTOR. IT'sr THE riVITIEW. .;' A DOOTHOOOO OF .CY MOW. 0. COMOOVOI VIM OriC OPOOTOOF 44.141 sff4: m44:44.1%vem aPatent ' Departmend COL. J. J. ASTOR DEDICATES HIS MARINE TURBINE PATENTS TO THE PUBLIC., scientific american, 1902-11-08
Keywords:
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