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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    the substances, which in some instances are to be put into cases with chloride of calcium. The vessels are generally “ made of tin,” and “ when the matters are very moist and thin” it is <£ advan- <c tageous to make a partial vacuum in the cases or vessels,” and do increase considerably the chloride of calcium. [Printed, 3d. See Repertory of Arts, vol. 6 (<enlarged series), p. 177 ; and London Journal {Newton’s), vol. 27 {conjoined series), p. 113.] A.D. 1845, July 2L—N° 10,781. LINGS, John.—Constructing “ safes, chests, or closets for the- “ reception of victuals and other perishable articles,” a low tem¬ perature being the object. The outer casing is generally of wood, •with an inner case of “ zinc or galvanised iron,” and between the two, either “ powdered charcoal, or sawdust, or hair, or other im- !£ perfect conductor of heat.” The interior is divided into such 8 compartments as may be required.” In “the middle of the safe ” is a box with a perforated bottom to contain ice. This construction is lengthily described, along with other modifications of the same. [Printed, 8c/. See London Journal, {Neioton’s), vol. 28 {conjoined series), p. 83.] A.D. 1845, November 4.—N° 10,922. CARSON, Samuel.—“ Packing eggs in cases from which the *s atmospheric air is withdrawn, and partially cooking the eggs,” “ by which means the eggs may be preserved for the purposes of “ food for a length of time.” The eggs are first punctured at one end with a pin, and packed in a case “ similar to those used for the preserving meat by the aid of a vacuum;” the punctured ends are put uppermost in the case. The lid is soldered on, and the vessel exhausted from a tube in the lid : this tube has two openings, one into a steam-boiler; steam enters the box, and the condensed steam is let out by a small hole in the bottom of the box, which is afterwards soldered. If the eggs are without the shell very little steam is condensed, and the hole at the bottom of the box is not required. [Printed, llcZ. See Repertory of Arts, vol. 7 (enlarged series), p.347; and Patent Journal, vol. 1, p. 19.] A.D. 1846, March 5.—N° 11,120. WARINGTON, Robert.—First, “ Coating substances to be pre- “ served with common glue, gelatine, or concentrated meat gravies, c 2
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