Improvements in Stoppers for Bottles, Glasses, and the like.
Year: 1898

page_text: COMPLETE SPECIFICATION.
Improvements in Stoppers for Bottles, Glasses, and the like.
I, LUDWIG SCHREYER, of Nippes, near Cologne, in the German Empire, Director of
Glass Works, 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 stateinent:-
This invention relates to a stopper for bottles, glasses, and the like which
surpasses all known so called hermetical stoppers as regards simplicity and which
can be used for all purposes when it is required to close vessels hermetically, by
reason of the absolutely air-tight joint made therewith; it may be used for instance
for closing bottles containing milk or beer and also for glasses or jars containing
preserves.
In order that this invention may be the better understood I now proceed to
describe the same with reference to the accompanying drawings, and to the letters
and figures marked thereon; which illustrate as an example, how this invention may
be applied for closing bottles.
Figure 1 is a vertical sectional view of a stopper applied to the neck of a bottle.
Figure 2 shows a vertical section through the neck of the bottle without the
stopper.
The neck of the bottle a is not cylindrical as is usually the case, but has an
interior annular enlargement a² at its upper end from which the inner diameter of
the neck of the bottle increases downwards for a certain distance to about the line b,
decreasing afterwards, and increasing then again to form the body or belly of the
bottle, so that at b of the neck of the bottle an annular angular enlargement is
formed, directed outwards.
The stopper c made of glass, porcelain or other similar material is provided with
annular grooves corresponding to the distance between the annular enlarge-
ments a² and 6 of the bottle neck washers or rings de of indiarubber or other
suitable material are inserted into these grooves or recesses, and are preferably
trapezium-shaped section.
When it is desired to close the bottle, the stopper c will pass into the bottle neck
very stiffly on account of the larger diameter of the ring e, the elastic resistance of
the latter is however overcome, and the ring e fits into the enlargement b. The ring e
has now a tendency to draw the stopper c downwards so that the upper elastic ring d
is also pressed firmly and air-tight into the annular enlargement a².
The bottle is opened by pulling on the collar c¹ of the stopper c overcoming the
elastic resistance of the ring e until the latter has passed through the narrow part
of the neck and can thus be removed with ease.
In order to make the joint made by such a stopper still more air-tight, for instance for
preserving milk and other goods, a channel f is provided through the stopper, leading
from the centre of the lower end of the stopper c to the side of the latter between
the two elastic rings and e. When the bottle has its contents heated as by being
placed into boiling water, the vapour developed or the heated air situated over the
contents of the bottle is allowed to pass into the open air by slightly lifting the
stopper c, which may be done if desired, without difficulty by the tension of

page_text: the vapour or heated air. In this manner when the contents of the bottle have
become cool a partial vacuum is formed in the bottle below the stopper, so that
the outer atmospheric air presses on the stopper and thus makes the joint
exceptionally air-tight.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is
1st. A stopping device for bottles, glasses and the like consisting of two annular
enlargements a² in the neck of the bottle or other vessel and a stopper provided
with two elastic rings d e fitted into recesses in the stopper, the latter being pressed
with the rings into the enlargements 2b of the neck of the bottle.
2nd. A form of construction of the device claimed in Claim 1, in which the
stopper c has an inner channel leading from the space between the two elastic rings
to the interior of the bottle in order to allow the escape into the open air of the
vapour or heated air, developed by the heating of the contents of the bottle, by
slightly lifting the stopper c.
Dated this oath
T
1000