An Improved Valve Stopper for Use with Sterilizing Vessels. and the like.
Year: 1899

page_text: Date of Application, 8th Feb., 1899-Accepted, 18th Mar., 1899.
COMPLETE SPECIFICATION.
An Improved Valve Stopper for Use with Sterilizing Vessels.
and the like.
I, DOCTOR CARL JULIUS MAX MÜLLER, of Schandau a/Elbe, in the Empire of
Germany, Royal Saxon Sanitary Counsellor, 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 properties of a suitable wad to extract dust, bacterii and the like from the
air to be filtered and to sterilize them also has been known for a long time and it
has been tried to make use of this property for preserving food in a good state.
Different methods of closing vessels exist which shall allow the entrance of
entirely sterilized air only to the contents of the vessel, but in these methods
either the wad stopper comes in contact with the contents of the vessel spoiling
the liquid provisions or the manipulation is too detailed and requires too much
attention.
:
This invention relates to an improved valve stopper for vessels for sterilized
preserving of food provisions, milk and liquids being adapted before the steriliz-
ing and which has the preference over others of the kind that it is very simple,
cheap, and works entirely automatically.
In the annexed drawing Figs. 1-3 represent different forms of the invention
in vertical section and in upper and under plan view.
Figs. 4 and 4 show a modified form of the invention as applied to a baby's
feeding bottle being provided with a suction teat instead of one of the valves.
Figs. 5 and 5 show a form for a baby's feeding bottle in which besides the
suction teat used as a valve, an angle in the pipe prevents the entrance of impure
air.
A stopper A of any material and any form is provided with two vertical per-
forations B B one of which is closed at its lower, and the other at its upper end
by means of a simple valve. These valves consist suitably each of an india-
rubber plate which is fastened in such a manner over the boring that it covers
the latter entirely, its border at on one spot being however not secured with the
adhesive support. The valve at the lower surface of the stopper acts as an inlet
and that on the upper surface as an outlet valve. In the channel B of the
former the wad is inserted. If now any vessel is closed with such a stopper and
the contents heated till the temperature required for sterilizing, the expanding
air can escape through the channel B after lifting the valve of the same whilst
the valve of B is held tightly closed. After cooling the exterior air penetrates
into the interior of the vessel in order to equalize the formed vacuum it can enter
only through B whilst it closes the valve of B' but as in the channel B the
sterilizing wad has been inserted the air is filtered and purified.
The stopper serves consequently for sterilizing and preserving the contents
of the vessel in a sterilized state. It can be made in any suitable form and in
different suitable materials and is cheaply constructed in consequence of its
simplicity.

page_text: For babies' feeding bottles the valve of the perforation B₁ is not required as
a short glass pipe is inserted into the latter upon which a suction feat S is
fastened which is provided with a slit opening instead of a perforation, the
borders of which lie against each other and thus prevent the entrance of air
(Figs. 4 and 4). If the suction teat is not directly put upon the glass pipe
but an india rubber pipe T Fig. 5 interposed an angle or bend is formed at K
which forms an extra preventative against the entrance of unsterilized air.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. An improved valve stopper for use with sterilizing vessels and the like
for sterilizing and maintaining in a sterilized state, food and provisions of all
kinds more especially milk and liquids, constructed of any suitable material
which is provided with two borings, the one B being provided with an outlet
valve arranged on the upper surface of the stopper and the other boring B with
an inlet valve arranged on the lower surface of the stopper and provided with
an inserted filtering wad.
2. A form of the stopper as in Claim 1 in which the outlet valve is formed
by a suction teat provided with a slit opening.
Dated this Qth of Wal
1000
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, W.C., London.