Specification of James Bannehr : supplying deodorizing material to closets and treating liquid excreta.

  • Bannehr, James.
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Bannehr : supplying deodorizing material to closets and treating liquid excreta. Source: Wellcome Collection.

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    Provisional Specification. A.D. 1867.—N° 2918. % 3 Bannehrs Improvements in Svpplying Deodorizing Material to Closets, <tc. portion. In order to facilitate the decomposition, and the chemical change resulting from the addition of an agent for fixing the ammonia, I convey through a suitable channel a current of atmospheric air by preference warmed and charged with a current of electricity, or with carbonic acid produced by 5 the combination of sulphuric acid with carbonate of lime, or otherwise, passing beneath the surface of the urine whilst undergoing decomposition. And in order that such air may pass out of the chamber containing the decomposing urine I provide a separate chamber, which I connect with the decomposing chamber by a pipe or other suitable channel, placing in such separate 10 chamber granules of charcoal or other deodorant which I charge with sulphuric or other acid for arresting the ammonia which might otherwise pass from the decomposing chamber with the air, the escaping air first passing through or between such granules of acidulated charcoal or other deodorant before escaping into the outer atmosphere. When such deodorant is fully 15 charged with ammonia or with offensive odour I incorporate it with the manurial matter hereafter described. When treating urine in combination with salts of lime I provide the decomposing chamber with a suitable apparatus for occasionally agitating the combined matters. The liquid mixture is then supplied continuously or intermittently, and preferably in a 20 state of spray, to evaporating apparatus constructed as follows, this apparatus constituting part of my Invention:—It consists of a long shallow enclosed vessel through which a strong draught of air is forced by a fan or other suitable blowing apparatus, the air being heated before entering the vessel by passing through a chamber containing a coil or set of pipes supplied with 25 either waste steam, hot water, or hot air. To prevent the air passing direct through the enclosed vessel and to cause it to impinge upon the bottom thereof, I fit at intervals across the vessel plates or vanes hung from pivots and counterbalanced or nearly so by weights. The liquid supplied to the vessel is evaporated by the draught of air, a solid manurial extract having SO great fertilizing properties being thus deposited upon the bottom, while the moistened air is carried off from the further end of the vessel through a channel which -is preferably Jed to the furnace in order that the air which will have a disagreeable odour may be consumed therein ; an additional fire-place may be employed if necessary to assist in consuming the offensive 85 moistened air passing from the evaporating chamber. Sometimes I fit a coil or set of pipes in the channel and pass cold air or water through them to cool the foul air. To facilitate the evaporation in the enclosed chamber I lead the products of combustion from the furnace, or some of them, through a pipe extending longitudinally through the vessel, and then through