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.

    14/62 page 6
    A.D. 1819, March 23.—N° 4350. MORRISON, ./Eneas.—Preserving “animal andvegitable food’ “ for a great length of time,” by enclosing the food “ by the several “ manufactures ” given, in vessels which, previous to and in the process of cooking are rendered perfectly air-tight by means of a cork or bung which has been prepared by coating “ the under part “ and sides ” in a certain manner given with “moistened bladder.” The cork is forced into the vessel, some distance below its lip, by means of a screw press ; above the cork is put “ such a lute as “ when dry ” will “ adhere to the cork as a solid mass.” A lute composed of tallow and rosin in certain proportions is said to answer well; bladder is tied over this, and a “ cap, having a cushion “ of soft laid hemp or other material calculated to make a stearri- “ tight joint,” is screwed over all, and the whole placed “ in a “ steam or water bath till the contents of the jar are fully cooked.” [Printed, 9 c?. See Repertory of Arts, vol. 38 {second series), p. 7.] A.D. 1820, June 20.—N° 4480. VALLANCE, John.—The “method and apparatus for packing “ hops,” by “ casking ” them in a particular manner so as to be “ out of the reach of the atmosphere,” if necessary, “ and in eonse- “ quence ” they may be kept as long as is pleased, “ perhaps half “a.century, even without being damaged.” “The envelopes, “ coverings, cases, or vessels in which ” they are put “ are made of “ wood or of metal, and are of whatever shape, size, appearance, “ and construction circumstances may render desirable,” cheapness being the great object; the expense over the pockets or bags is said to be compensated for, by getting so much more into a wooden or metal package ; and to attain this, “ wherever it is desirable,” “other means of pressure than the screw, hydraulic press, or “ racks ” may be employed. “ The joints or crevices between the “ sides or ends or heads ” of the packages are filled up, by pour¬ ing into them “ a lute or luting composed of pitch or rosin,” “ softened and toughened in texture ” by “ addition of a little “ tallowbetween the boards, when forming the packages, a piece of “ list or listing ” may be placed, “ to render partially air-tight “the joint,” and if this joint be not satisfactory “cover” the listing either with the lute or luting “ described.” “ Cloth or any- “ thing that will answer the purpose ” may be used. Pointed, lie?. See London Journal (Newton's), vol. 2, p. 11.]
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