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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    “ or otherwise, ” by dipping them in warm solutions of such sub¬ stances, or dipping them “ in a vessel of thin cream of plaster of “ Paris,” which, when set hard, saturate with melted suet, wax, stearine, &c. The things may be wrapped in waterproof cloth, or with caoutchouc or gutta-percha, or coated with a varnish of these substances. Second, Preserving the substances coated by keeping them con¬ stantly “ submerged in glycerine, treacle, elaines, oils, & other the “ like matters not liable to oxidation.” [Printed, 3d. See Repertory of Arts, vol. 9 {enlarged series), p. 44 ; London Journal (Newton’s), vol. 29 (conjoined series), p. 200; and Patent Journal, vol. 1, p. 263.] A.D. 184b, June 12.—N° 11,240. rEttie, Robert.—The title of this invention is, “ Certain im- “ provements in the manufacture of fuel, parts of which improve- <e ments are applicable for the purposes of purifying, compressing. “ and extracting vegetable and other substances and fluids, and in the “ machinery or apparatus to be used for the same.” The vessel for extracting juice or liquor from any substance is a double box, the upper box having a false bottom, the lower one having a tube to which an exhausting apparatus may be attached, and with other arrangements described, so that when the air is extracted, on turning a tap liquor flows in, which takes the place of the air, and this may be employed in salting provisions. [Printed, 6eL] A.D. 1846, September 17— N° 11,3/2. NEWTON, William Edward.—Preserving fruit and vegetables by constructing apparatus so as they shall be kept nearly ap- “ proaching the freezing point of water, without being actually “ allowed to freeze.” The ground is excavated, and a wall of stone or brick built for the purpose of supporting the excavation; this is divided into compartments, all of which have double sides, so as to admit of their being lined “ with charcoal, tan, bark, or other bad “ conductor of heat.” The floor is supported above the bottom of the excavation. “ Ice may be placed upon the covering of the “ ice house,” which forms one of the compartments, “ and as this ice *'4 melts the water from it will trickle down an inner wall of the ice “ compartment, and will absorb any heat which might otherwise find its way through the charcoal or imperfect conductor.” [Printed, 6d, See London Journal (Newton’s), vol. 30 (cor joined series), p„ 404 ; and Patent Journal, vol. 2, p. 718.]
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