Specification of John Aspinall : apparatus for obtaining extracts and decoctions.

  • Aspinall, John.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Aspinall : apparatus for obtaining extracts and decoctions. Source: Wellcome Collection.

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    Apparatus for Obtaining Extracts and Decoctions. (This Invention did not proceed to the Great Seal.) PROVISIONAL SPECIFICATION left by John Aspinall at the Office of the Commissioners of Patents, with his Petition, on the 25th March 1856. I, John Aspinall, of Limehouse, in the County of Middlesex, Civil 5 Engineer, do hereby declare the nature of the said Invention for “ Improve¬ ments in Apparatus for Obtaining Extracts and Decoctions,” to be as follows:— My Invention consists in an arrangement of centrifugal apparatus, in which a liquid is caused to pass through the substance from which the extract is to 10 be obtained, to fall into the body of the vessel, and to be again passed through and returned as long as the centrifugal action is kept up. Into the bottom of a vessel suitable for containing liquid I fit a step for the reception of a shaft, which passes through the top or cover of the vessel, and is connected by gearing to some source of power for imparting rotary motion 15 thereto; connected to this shaft, by arms or a perforated plate, is a conical pipe, open at bottom, and provided with vanes on the inside. At the top of this pipe, and forming a continuation thereto, is a perforated ring, and for some substances I fit an inner and smaller ring concentric thereto; an annular plate is placed between the two rings, and forms a bottom, upon which the substances 20 from which the extract is to be made are to rest. This inner ring is not essential to the perfect working of the apparatus, as the substances may be