Specification of William Strang : separating sewage.

  • Strang, William.
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Strang : separating sewage. Source: Wellcome Collection.

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    Strang's Improvements in Separating Sewage. dealing with sewage or discharges from waterclosets, privies, kitchens, stables, byres, and the like, hut also for dealing with any mixtures of water and solid impurities such as are ordinarily discharged from public works into drains, sewers, or rivers. 5 Various materials may be used for the separating and filtering medium, but I prefer to employ ashes, not only on account of their effective filtering and deodorising action, but also because being obtained from household and engine fires they are produced in the very localities in which waterclosets are situated; whilst instead of as heretofore being 10 troublesome and involving unremunerative expence in their removal they are in my apparatus converted into a valuable manure which may be profitably disposed of. And in order that my said Invention, and the manner of performing the same, may be properly understood I have hereunto appended two 15 Sheets of explanatory Drawings, to be hereafter referred to, and repre¬ senting three convenient modifications of my improved apparatus. The same reference numerals are used to mark the same parts in all the Figures. One modification is shown in vertical section in Figure 1, and in end 20 view in Figure 2, on Sheet 1 of the Drawings, and in this arrangement the dwelling-house soil pipe 1 communicates at its lower end with an inlet 2 into a vessel 3 made with vertical sides and an inclined and rounded bottom 4. Inside the vessel 3, and just above the inlet 2, there is a grating 5, 6, which is made in two parts for a purpose lierein-after 25 explained. Ashes or other suitable filtering materials are filled into the upper part of the vessel 3, but a fine grating 7 is provided at one upper corner to prevent their entering an outlet 8 by which the filtered water passes off. An outlet 9 is provided at the lower end of the inclined bottom 4 for the more solid matters, and this outlet is furnished with a 30 screw coupling 10 for attaching the neck of a portable receptacle 11. When changing the receptacle 11 the outlet 9 is closed by an internal valve 12 which is lowered and raised by means of a rod 13. The ashes gradually work down through the grating 5, 6, but may be wholly changed at any time when considered sufficiently charged with the 35 matters which they abstract from the water passing up through them by lowering the lower part 6 of the grating. The upper part 5 of the grating rests on narrow flanges formed on the sides of the vessel 2, and is formed with bars of considerable width apart. The lower grating 6 is formed