Abridgments of the specifications relating to preservation of food / printed by order of the Commissioners of Patents.

Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Abridgments of the specifications relating to preservation of food / printed by order of the Commissioners of Patents. Source: Wellcome Collection.

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    “ are applicable to the desiccation of vegetable substances gene- “ rally.” For this latter purpose producing e£ rapid currents of “ heated air,” more particularly applicable to “ sugar, coffee, starch, “ wheat, and other grain.” “Atmospheric air should be heated by “ causing it to pass through a series of pipes exposed to the heat “ of a furnace.” “ Desiccating sugar by causing the air heated to any degree found “ beneficial, to be impelled ” “ through pipes or vessels, and thence “ to circulate in the drying chambers, at any rate of speed that may “ be most approved.” With coffee, instead of closed cylinders, which is the usual way of “ drying and preparing coffee,” using “ perforated or pierced cylinders.” The acrid “ vapours and spent “ heat pass off through hollow axles.” The modes and apparatus are fully described. [Printed, Is. Id. See Engineers and Architects’ Journal, vol. 7, p. 422.] A.D. 1844, September 19.—N° 10,322. FITCH, Michael.—First, “ Producing a substance to be used in “ preventing decomposition in provisions.” Second, “ The means used for producing such substance.” Third, “ Condensing and applying gas or fume evolved in ds- “ tilling wood to preventing meat or fish from perishing, by con- “ bining such gas or fume with salt,, sugar, treacle, or saltpetre, “ and then using such, materials for preserving purposes.” Wood, and in preference oak, is put into a retort with a refrigerator, ind distilled into a receiver containing a solution of salt or sugar, treacle or saltpetre, and the product is used for preserving meat or fish. [Printed, Gd. See Repertory of Arts, vol. 5 (enlarged series), p. 296.] A.D. 1845, January 28.‘—N° 10,496. YULE, William Trueman.—First, “ Drying animal and vegi- “ table matters when preserving the same,” Second, “ Keeping animal and vegitable matters dry when “ preserving them in closed vessels.” By the first part the sub¬ stances are either “hung up or thinly spread ” on shelves in a drying chamber with a “ blowing machine, which may be either a “ fan or a piston or a cylinder.” The air passes through a vessel containing fragments of chloride of calcium to deprive it of mois¬ ture before it enters the chamber. Tire second part, “keeping dry’'
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