Improved Air-tight Cap for Bottles, Flasks, and Jars.
Year: 1895

page_text: Date of Application, 28th May, 185
Complete Specification Left, 7th Mar., 1896-Accepted, 2nd May,
1896
PROVISIONAL SPECIFICATION.
Improved Air-tight Cap for Bottles, Flasks, and Jars.
THOMAS BROOKE, JOHN BROOKE and ARTHUR GEORGE LEVICK all of
No. 66 West Street Sheffield in the County of York Merchants do hereby
declare the nature of this invention to be as follows:
:-
The object of our invention is to produce a simple and effective cap for bottles,
flasks and jars which will be perfectly air tight (the caps in use at the present
time being more or less defective). And we accomplish this desirable object in
the following manner. On the neck of the bottle, flask or jar we form a screw
part (or an equivalent to a screw). In the cap to cover the article we form a
corresponding screw part (or an equivalent) so as to fit on the article. In the
inside of the said cap we place a washer of rubber faced by a washer of cork
to prevent the contents of the bottle, flask or jar coming into contact with the
rubber, thus making a perfectly clean and air tight cap.
יני.
THOMAS BROOKE.
JOHN BROOKE.
ARTHUR GEORGE LEVICK.
Improved Air-tight Cap for Bottles, Flasks, and Jars.
THOMAS BROOKE JOHN BROOKE and ARTHUR GEORGE LEVICK all of
66 West Street Sheffield in the County of York Merchants 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 :-
Our invention relates to improvements in closing up the mouths of bottles, flasks,
and jars, by means of an airtight cap and we carry out this desirable object in the
following manner.
Ou the neck of the article to be covered we form an external screw thread, or
equivalent means of forcing down the cap and retaining it in position when so
forced or screwed down.
Fig. 1 A represents the cap which is made with a screw thread or an equivalent
to fit the neck of the article to be covered.
B represents a disc of rubber (or any other suitable material of an elastic nature)
which is placed in the cap first.
C. represents a disc of cork which is placed in the cap after the rubber so that
nothing but a clean surface of cork is presented to the contents of the article.
The cap is then screwed tightly on to the neck of the article, and the disc of cork
backed by the disc of rubber forins an airtight joint.
Fig. 2. represents the neck of a bottle whith an external screw thread, which we
use in preference to any other means of forcing the cap into position.
Fig. 3. represents the cap in section B being the disc of rubber and C the disc of
cork when placed in position in the cap.
D

page_text: We do not claim the cork by itself as it is too porous and has been found
worthless, therefore our claim is the combination of cork and rubber, which forms
an airtight joint.
As a modification of this, we can, instead of using the rubber disc, coat the back
of the cork with an air tight film by slightly dipping it in a solution of rubber or
other suitable material.
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
A cap for bottles, flasks, and jars made airtight by the use of a combination of
cork and rubber.
THOMAS BROOKE.
JOHN BROOKE.
ARTHUR G. LEVICK.