Improvements relating to the sterilization of liquids / [Johann Kroog].

  • Kroog, Johann.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements relating to the sterilization of liquids / [Johann Kroog]. Source: Wellcome Collection.

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    N° 20,625 A.D. 1900 Date of Application, 15th Nov., 1900—Accepted, 26th Jan., 1901 COMPLETE SPECIFICATION. Improvements relating to the Sterilization of Liquids. I, Johann Kroog, of 12, Karlstrasse, Halle-on-the-Saale, Kingdom of Prussia, in the Empire of Germany, Civil Engineer, do hereby declare the nature of this invention and in what manner the same is to he performed, to he particularly described and ascertained in and by the following statement: — This invention relates to a method of sterilizing liquids in closed vessels and has for its object to do away with the noxious free space or layer of air resting upon the liquid contained in the vessel, in order to obviate the injurious shaking effects arising from the liquid not completely filling its vessel, a disadvantage which cannot be avoided as the said free air space is indispensable in sterilizing ’ 0 liquids within sealed vessels. I attain the object of avoiding the said shaking space by using for the liquid to be sterilized a vessel of a peculiar shape, and further by employing a seating cap having an extensible diaphragm for closing the vessel prior to the sterilization. Referring to the accompanying drawing ; 15 Figure 1 is a sectional view of the vessel or jar containing the liquid to be sterilized by heat, with the sealing cap placed over the mouth of the jar. Figure 2 is a sectional view of the jar with the sealing cap attached thereto and forced inwards by means of a special tool or plunger. Figure 3 is a sectional view of the jar with a. special device for holding the cap 20 in position during the sterilizing action, and Figure 4 is a sectional view showing the jar with the sealing cap thereon in the position after sterilization and ready for storage. The vessel or jar is provided with means such as a choke a for separating it into a larger chamber h for the liquor or juice to be bottled, and a smaller chamber c, 25 the latter serving for the reception of the gases developed during the sterilization. In carrying out mv new method the jar on being filled up to the brim with the; liquor to be bottled, is closed by a novel kind of a cap d essentially in a manner which I have described in the’Specification forming part of an Application for Letters Patent No. 20463 of 1900. In the present new method the tool or 30 plunger h for forcing the diaphragm e of the cap into the contracted or choked neck of the jar, see Figure 2, must be of a shape adapted to fit said neck so as to bring the diaphragm down and in intimate contact with the projecting interior rim of the choking neck. On removing the tool h, the diaphragm e will neverthe¬ less remain in its depressed position, Figure 2, owing to the pressure of the outer 35 air. In order to prevent the cap d from being blown oh the jar during the subsequent heating of the latter, the cap is firmly held upon the upper rim of the jar by means of the crown f and the elastic bow g. On heating the jar for the purpose of sterilizing its content, the latter will expand and drive out the diaphragm c of the cap d so as to assume a convex shape, 40 as illustrated in Fig. 3. The diaphragm will retain said convex shape as long as the heating is continued, whereupon it will slowly descend again during the colling process and, owing to the pressure of the outer air, will finally re-assume [Price 8cL]