Improvements in Capsules for Aerating Liquids.
Year: 1899

page_text: Date of Application, 23rd June, 1899-Accepted, 29th July, 1899
COMPLETE SPECIFICATION.
Improvements in Capsules for Aerating Liquids.
I, HEINRICH KORRODI, Engineer, of 6, Archivstrasse, Berne, Switzerland, do
ereby declare the nature of this invention and in what manner the same is to be
erformed to be particularly described and ascertained in and by the following
statement;
The metallic capsules filled with high pressed or liquefied gases such as carbonic
acid and known in the trade as sodor capsules, require for their use a bottle fitted
with a special closing apparatus, which on closing the bottle bores a hole into the
capsule and allows the high pressed or liquified gas to escape and be absorbed
by the liquid contained in the bottle. The necessity of using a special bottle as
described has its disadvantages for taking into account the initial cost of such a bottle,
it often occurs that the bottle is not at hand when it could be at best employed.
In order to extend as much as possible the use of the highly practical capsules
filled with carbonic acid, it is very necessary to be able to utilize them without
being compelled to have a bottle specially constructed for that purpose. It must
be possible to utilize these capsules with any bottle that can be corked by any
ordinary means (cork, apparatus used for bottles of beer etc.).
This condition can be fulfilled by having the top of the capsule closed up with
an outer cover made of hard material, bearing a hole, and an inner cover made of
soft material, plain and easy to be bored.
In the accompanying sheet of illustrative drawings: Fig. 1 is a plan and eleva-
tion of a capsule constructed according to this invention, and Fig. 2 a sectional
view of a pricker cap. Figs. 3 and 4 are similar views to Fig. 1 showing slightly
modified forms of capsules.
The capsule shown in Fig. 1 has an outer cover a made of hard material-hard
5 capsule metal for instance-and an inner cover of soft material such as tin or of
aluminium. The upper end of the neck of the capsule is bent down and presses
both covers against the inner shoulder d of the neck, by which the inner soft
cover serves at the same time to effect a tight closing. Thus the use of the
unhandy rubber packing is avoided. The outer hard cover a is bored in its centre
O with a small hole of about 2 millimetre diameter.
The capsule is bored on the cover side by means of a pricker fixed in a cap c.
Said
cap
is represented in Fig. 2 and consists of a sheet iron cap in form of a
cup wide enough to fit on the neck of the capsule. The bottoni of the cap is
provided with a pricker with a fine point and around the point is a soft rundle r
35 consisting of cork. By pressing the pricker cap on the neck of the capsule the
inner cover b is bored through and at the same time the cork rundle is pressed
against the end of the neck and prevents the gas escaping as long as the pressure
on the pricker cap is maintained; the capsule is now inserted into the vessel con
taining the liquid to be treated and the gas by escaping pushes the cap away
40 In order to prevent too sudden an escape of the gas, it is necessary to bore only
Every box contains some of said pricker caps
very small hole with the pricker n.
which can be used repeatedly.
Figs. 3 and 4 show capsules not requiring pricker caps. Both covers a and
Emilar to those represented in Fig. 1 but below cover b is a third cover e mad

page_text: of hard material slightly bulged down and bored with a small hole in the centre.
The capsule can be opened by means of any sharp tool (needle, knife, etc.); the
dimensions of the hole bored into the cover b has no effect whatever on the rate
at which the gas escapes, the escape being controlled by the smaller inner hole
P).
The loss of gas during the insertion of the capsule into the bottle or vessel will
only amount to the quantity of gas which could have been contained between the
outer and the inner cover.
In this form of capsule the covers only are bored and the capsules can be
utilized again. To answer the various requirements, it will be necessary to have
at least two sizes of capsules, so that from the larger size, the smaller can be
manufactured. For that purpose the form given to the capsule as shown in Fig. 4
is a most suitable one; instead of the shoulder d the neck is simply contracted
as shown at d. In Fig. 4 the dotted lines show how a capsule after once using
can be transformed into another capsule of smaller size. The form of the capsule
to be preferred will be oblong, cylindrical and able to be introduced into the neck
of any kind of ordinary bottle.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In capsules filled with compressed or liquified gases for aerating liquids the
means for adapting the capsules for use in ordinary bottles consisting in con-
structing the capsules with an outer perforated cover of hard material, an inner
disc, plain and consisting of soft material, i.e., easy to be bored through, and a
pricker cap for piercing the said disc before the capsule is inserted into the vessel
containing the liquid, and without it being necessary to bore specially the outer
hard cover.
2. A form of capsule as claimed under Claim 1 in which a third inner cover
bearing a small hole determines the escape of gas.
3. The improved capsule substantially as described with reference to the
'drawings.
Dated this 23rd day of June 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.