An Improved Closing for Bottles the Contents of which are to. be Sterilized.
Year: 1891

page_text: Date of Application, 13th Nov., 1891
Complete Specification Left, 29th July, 1892-Accepted, 3rd Sept., 1892
1
PROVISIONAL SPECIFICATION.
An Improved Closing for Bottles the Contents of which are to. be
Sterilized.
I, CHARLES HUELSER of the firm of Huelser & Co. International Patent.
Agency, of Temple Chambers, London, do hereby declare the nature of this inven-
tion, a communication to me from abroad by Carl Ollendorff, of Bonn / Rhine,
in the Empire of Germany, Manufacturer, to be as follows:-
The object of this invention is a caoutchouc cap adapted to be pulled over the
mouth of ordinary bottles, the rims of which need not be ground off and allowing
the contents of the bottle to be sterilized, while at the same time it affords an
exterior sign to show whether the vacuum produced by sterilizing is still obtaining.››
The cover of the cap consists of two halves of different thickness. At the place
of joining of the two halves a flat pivot projects outwardly which is provided with
a longitudinal slit.
After the cap has been pulled over the mouth of the bottle with the respective
article filled in, the bottle is heated, whereby the expanded air is driven out
through the slit.
When the heating is discontinued, the cover of the cap is drawn inward owing
to the overpressure of the atmosphere, the thin half of the cap being however
pressed in to a greater extent than the thick half, so that the pivot assumes an
inclined position. Thereby the slit is securely closed. As long as the pivot
occupies an inclined position, the rarification of the air in the bottle obtains.
By slightly compressing the pivot from the sides in the direction of the slit, air
enters through the latter, and the cap can be commodiously pulled off the bottle.
Dated this 12th day of November 1891.
HUELSER & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Closing for Bottles the Contents of which are to be
Sterilized.
I, CHARLES HUELSER, Patent Agent, of Temple Chambers, Temple Avenue, in
the City of London, 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 an elastic cap, which may be pulled
over the mouth of bottles, the rims of which need not be ground off, and which
allows the contents of the bottle to be sterilized, while at the same time it shows
externally, whether the vacuum produced by sterilizing still exists.
In the accompanying drawings,
Fig. 1 is a section of a bottle neck provided with a cap embodying this
invention.
Fig. 2 shows the same after sterilization.
Fig. 3 is a plan of the indiarubber cap or capsule.
The cover of the cap consists of two halves of different thickness, namely, a thick
part a and a thin part b. The joint of the two halves carries a flat lug c, which is
provided with a longitudinal slit d.
After the bottle has been filled and the cap has been pulled over the mouth of

page_text: the same, the bottle is heated and thereby the (expanded) air driven out through
the slit.
When the heating is discontinued, the cover of the cap changes its shape,
being forced inward by the excess of the atmospheric pressure over that existing
in the bottle; the thin half b of the cap is, however, depressed to a greater
extent than the thick half a, so that the lug c assumes an inclined position.
Thereby the slit d is securely closed. As long as the lug e occupies an inclined
position, the air in the bottle remains rarefied. By slightly compressing the lug c
from the sides in the direction of the slit, air is caused to enter through the latter,
and the cap can now be conveniently pulled off the bottle.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A flexible cap or capsule for bottles and similar receptacles, having a thick
part a, a thin part 6 and at their joint, a lug e provided with a slit, the whole being
constructed and adapted to operate substantially as described.
Dated this 28th day of July 189.)
C
HUELSER & Co.