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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    <of iron of a certain breadth is clasped round the vessel below the rim. “ Some solder is melted and poured into the channel;” “red- “ hot coals are put on the plate all round the box,” and the lid is pressed so that its lower edge is immersed in the solder; the hot ooals are then removed, and the iron plate also. “ A small hole is “ left in the cover to allow ” air, &c. to escape while the lid is being put on, “ and as soon as the operation is finished that hole “ must be stopped up with a little solder.” To take out the pro¬ visions when required, the annular plate is put on again and fire put upon it, which melts the solder, when the lid may “ be easily “ lifted off without injuring the box.” A solder easily melted is recommended to be used, and may consist of tin, lead, and bis¬ muth, in certain proportions. The earthenware “ vessels are made “ with a flat rim projecting out all round the edge of the mouth ;” a ring of india-rubber is laid upon this ; “ apply a cover made of “ earthenware, or else of silver or of plated metal, which has a flat “ rim also, projecting all round it to fit upon the flat rim of the “ jar. The cover is forced tight down upon the packing of india- “ rubber, interposed between the two rims by means of small “ wedge-shaped staples.” If “fruit or other vegitable substance” contained in the jar is to be boiled after the jar is closed, it will be necessary to have a small hole in the cover, and then a metal cover should be used, and the hole stopped up afterwards with solder, and to prevent damage to the earthenware by hammering on the staples a washer may be put on the top of the cover and one under the rim of the vessel. [Printed, 6d. See Repertory of Arts, vol. 2 (new series), p. 1; and London Journal (Newton’s), vol. 5 (conjoined series), p. 53.] A.D. 1834, November 13.—N° 6711. LONG, Daniel Rutter.-—“ Injecting certain antiputrescent “ and flavoring preparations into the blood-vessels ” of animals “ by means of a force pump.” The “ antiputrescent and flavoring “ preparations ” may consist of water, salt, saltpetre, spices, and vinegar. [Printed, 3d. See Repertory of Arts, vol. 6 (new series), p. 25; and London Journal (Newton’s), vol. 10 (conjoined series), p.244.] . A.D. 1835, March 11.—N° 6787. NEWTON, William.—Preparing “animal milk” so as it may be “ preserved for any length of time with its nutritive properties.
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