New or Improved Apparatus for Pasteurising Liquids.
Year: 1896

page_text: Date of Application, 24th Sept., 1896-Accepted, 5th June, 1897
COMPLETE SPECIFICATION."
New or Improved Apparatus for Pasteurising Liquids.
We, JOHN HENRY WILLIAM ORTMANN, Machinist, and CARL WILHELM
CORNELIUS HERBST, Merchant, both of 9 Gothenstrasse, Hamburg in the
German Empire, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The object of this invention is to provide means for pasteurising beer and other
liquids that contain gas, while the same are passing from the storage. vat or other
vessel, and to cause them to redissovle or reabsorb automatically, continuously,
and as completely as possible, the gas separated from the liquid by the pasteurising
process. This object is effected by passing the liquid to be pasteurised through
horizontal, undulating, ascending and descending pipes in which it is first heated to
the requisite degree, and then cooled. The gas separated by the action of the
heat collects in the upper bends of the undulating pipes, is carried down in the
descending legs of the pipes by the liquid flowing through them, and then rises
again in bubbles through the liquid in the ascending pipes. This process
continues until the whole of the separated gas has been reabsorbed by the liquid.
Loss of gas is by this means completely avoided, and the liquid remains as fully
charged with gas, after the pasteurisation has been effected, as before.
The accompanying sheet of drawings illustrates an apparatus for pasteurising
beer, arranged and constructed in accordance with our invention.
Figure is a horizontal section, Figure 2 a vertical section, Figure 3 an
elevation and Figures 4 and 5 show certain constructive details.
The apparatus consists of three principal parts namely, a pasteuriser A, a water
cooler B, and an ice cooler C. Each of these parts consists of a tank or vat
provided with undulating, ascending and descending pipes r, r, r2 connected
together by connecting pipes k into a continuous system or worm through which
the liquid is conducted. The three tanks or vats may be placed at suitable
distances from each other as shown.
The operation of the apparatus is as follows:-
All three tanks are first filled with water. The contents of the tank A are then
heated to, and maintained at, a temperature of from 75° to 95° Centigrade by
means of steam supplied through the pipe 9 and steam-distributing apparatus f
The contents of the tank B are maintained by water supplied through the pipe i
at a temperature of about 15°. Centigrade, and the contents of the tank Care
maintained at 0° Centigrade by means of iced water. The pipes m serve as
overflow pipes. The pipe a is connected with the storage vat. The beer is
driven out of the storage vat by compressed air into the above described apparatus.
When the above mentioned degree of heat has been attained in the tank A the
tap is opened; the beer then enters the pipe r of the tank A, and is raised to a
pasteurising temperature, which is shown by the thermometer t. The beer then
passes through the tap into the pipes r of the tank B, and is there cooled to a
temperature of from 15° to 20° Centigrade which is shown by the thermometer t¹.
The cooled beer then passes through the tap 2 into the pipes r 2 of the iced water
tank C, and is there cooled to a temperature of about 50 Centigrade, which is
about the temperature at which it should have left the storage vat. The
thermometer t 2 serves to indicate this temperature. The now pasteurised beer can.
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page_text: be withdrawn through the tap h3 into casks, or into a filling machine whence it can
be drawn off into bottles, or it may be passed through a filter, or be otherwise
-dealt with.
The connecting pieces k for the pipes r, r, r2, are arranged outside the tanks, so
that by removing the said connecting pieces the said pipes can be readily got at
for cleaning purposes. The construction of these connecting pieces is clearly
shown in Figure 4. The method of fixing the thermometers in the pipes is shown
in Figure 5.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
-claim is :-
A pasteurising apparatus for beer and other liquids containing gas, in which the
liquid to be pasteurised is passed through the heating and cooling apparatuses in
horizontal, undulating, ascending and descending pipes r, r, r2, for the purpose of
causing the gas separated from the liquid by the pasteurising process to be
reabsorbed by such liquid, substantially, as described.
Dated this 23rd day of September 1896
J. H. W. ORTMANN,
C. W. C. HERBST,
Per W. H. Beck,
115 Cannon Street, London, E.C., Agent.