An Improved Apparatus for Sterilizing or Disinfecting Liquids.
Year: 1893

page_text: COMPLETE SPECIFICATION.
An Improved Apparatus for Sterilizing or Disinfecting Liquids.
We, JOHN HENRY WILLIAM ORTMANN and CARL WILHELM CORNELIUS
HERBST, both of 9 Gothenstrasse Hamburg, in the German Empire, Manufacturers
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 apparatus, hitherto used in practice for sterilizing (by Pasteur's method)
liquids contained in bottles, are attended with the disadvantage that it is impossible
both to produce and to maintain a uniform temperature in all parts thereof. The
object of this invention is to remove this disadvantage.
In the accompanying drawings-
Figure 1 is a longitudinal section,
Figure 2 a plan, and
Figure 3 a cross section of the apparatus constructed in accordance with this
invention.
Within the case or receptacle K, a short distance above its bottom surface, there
rests upon two supports or carriers t a plate P which is so arranged that, between
its outer edge and the side wall of the case, a space, about 10 millimetres wide,
remains clear. The plate is on all sides provided with series of perforations e
extending in a line, close to the edge of the plate; and also with a central opening a
connected with the discharge tube d. The inlet tubes lead to a space situated
below the plate P, being connected therewith by two necks or nozzles and c
projecting into the receptacle. Through these hot water is admitted into the
apparatus, which is previously filled with cold well water. The hot water first fills
the space underneath the plate, which it heats in consequence. Through the
space and the perforations e the water then rises into the upper chamber, thereby
displacing the colder water, and forcing it through the discharge orifice a into the
heating apparatus.
The heat communicated by the rising water to the periphery of the receptacle
slowly and uniformly raises the temperature, while at the same time an energetic
circulation is produced by the currents directed towards the centre from all sides.
The desired temperature is surely, though gradually, reached, and may be kept up
for any period of time by slow additional heating. The cold water below the
plate P escapes through an aperture provided between the orifice a and tube d, and
enters this tube. When the operation is completed, the tubular connection with
the heating apparatus or furnace is cut off, and the sterilizing apparatus is emptied
through the discharge cock, so as to be ready for the next operation.
Extensive tests made with the apparatus herein described, have shown that the
temperature remains practically uniform in all its parts, a circumstance which
enables the "Pasteur process to be carried to a degree of perfection hitherto
unattained.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
In apparatus for sterilizing ("pasteurizing") bottles and their contents, the
arrangement and employment of a plate P,, placed a short distance above the
bottom surface of the receptacle, and near the edge of which, on all sides, there are
provided series of perforations e, through which the hot water, admitted below the

page_text: solid portion of the plate, rises at or near the periphery of the apparatus,
subsequently escaping again through the outlet d provided in the centre of the
plate.
Dated this 20th day of October 1893.
MARKS & CLERK,
18, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.