Specification of John Hanson : treating sewage.

  • Hanson, John.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Hanson : treating sewage. Source: Wellcome Collection.

    3/10
    A.D. 1875, 28^ July. N°2675. Treating Sewage. LETTERS PATENT to John Hanson, of Savile Town, near Dewsbury, in the County of York, Manufacturing Chemist, for the Invention of “ Improvements in the Treatment op Sewage, and in the Mano- FACTURE OF MANURE THEREFROM.” Sealed the 6th October 1875, and dated the 28th July 1875. PROVISIONAL SPECIFICATION left by the said John Hanson at the Office of the Commissioners of Patents, with his Petition, on the 28th July 1875. I, John Hanson, of Savile Town, near Dewsbury, in the County of 5 York, Manufacturing Chemist, do hereby declare the nature of the said Invention for “ Improvements in the Treatment of Sewage, and in the Manufacture of Manure therefrom,” to he as follows:— This Invention relates to improvements in the treatment of sewage and in the manufacture of manure therefrom. 10 In carrying my Invention into practice for the precipitation of the sludge from each 100,000 gallons of sewage water I take of slacked lime (say) about 20 or 28 lbs. and of black ash about 30 lbs., and of soot