IMPROVEMENTS IN STOPPERS FOR BOTTLES FOR CONTAINING AËRATED OR GASEOUS LIQUIDS
Year: 1880

page_text: LETTERS PATENT to John Lamont, of Virginia Street, in the City of Glasgow,
in the County of Lanark, Merchant, for an Invention of "IMPROVEMENTS IN
STOPPERS FOR BOTTLES FOR CONTAINING AËRATED OR GASEOUS LIQUIDS."
PROVISIONAL SPECIFICATION left by the said John Lamont at the Office
of the Commissioners of Patents on the 19th June 1880.
JOHN LAMONT, of Virginia Street, in the City of Glasgow, in the County of
Lanark, Merchant. "IMPROVEMENTS IN STOPPERS FOR BOTTLES FOR CONTAINING
AERATED OR GASEOUS LIQUIDS."
This Invention relates to improvements in internal stoppers for bottles for
containing aërated or gascous liquids, the main object of the improvements being
to render such stoppers lighter, and thereby lessen the risk of breakage and to
allow of the bottles being more easily filled and opened.
In carrying out my Invention I form the stein or body of the stopper of glass or
other suitable material having a greater specific gravity than water, of a suitable
length, and preferably of a slightly conical form; around the stopper, and near the
base thereof, I form a groove of suitablo shape to receive a ring or tube of rubber,
and the bottom of the stopper is recessed or hollowed, whereby I ensure the stopper
always falling to its proper position in the neck of the bottle.
It is to be understood that this improved stopper is specially constructed for use
with bottles made according to the Specification of former Letters Patent granted
to me, dated the Second day of June, One thousand eight hundred and seventy four,
No. 1923.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Lamont in the Great Seal Patent Office on the 18th December
1880.
JOHN LAMONT, of Virginia Street, in the City of Glasgow, in the County of
Lanark, Merchant. "IMPROVEMENTS IN STOPPERS FOR BOTTLES FOR CONTAINING
AERATED OR GASEOUS LIQUIDS."
This Invention relates to improvements in internal stoppers for bottles for
containing aërated or gaseous liquids; the main object of the improvements being
to render such stoppers lighter, and thoroby lessen the risk of breakage and to
allow of the bottles being more casily filled and opened.
In carrying out my Invention I form the stem or body of the stopper of glass or
other suitable material having a greater specific gravity than water, of a suitable
length, and preferably of a slightly conical form; around the stopper, and near the
base thereof, I form a groove of suitable shape to receive a ring or tube of rubber,
and the bottom of the stopper is recessed or hollowed, whereby I ensure the
stopper always falling to its proper position in the neck of the bottle from the
weight of the head portion of the stopper.
It is to be understood that this improved stopper is specially constructed for use
with bottles made according to the Specification of Letters Patent granted to me,
dated the Second day of June, One thousand eight hundred and seventy four,
Number 1923, but the improved stopper may be used with other bottles. But to
make my Invention better understood I will proceed to describe the same by
referenco to the accompanying Drawing.
Figure 1 is an elevation of the stem or body of my improved stopper, which is
preferably made of glass, but may be made of other suitable material having a
greater specific gravity than water.
The stem or body a of tho stopper is preferably made of a slightly conical form,
as shown; bis the groove formed around the stem or body a, as clearly shewn in
Figure 2, which is a section of Figure 1; this Figure also shows the recess or
hollow c in the bottom of the stem or body a of the stopper; Figure 3 is an
elevation of the stopper completo, d being the tubo of india rubber (shewn in
separate elevation at Figure 7) placed around the lower end of the stem or body a,
and fitting in the groove b therein, as shewn in Figure 4, which is a section of
Figure 3.
A stopper of this construction being placed in the interior of a bottle, and tho
bottle being filled with aërated water in the manner usual when internal stoppers
aro employed, the stopper in consequence of the greater weight of its head portion,
resulting from the recessed bottom ĉ of the stem a, will fall into the proper position
to close the bottle, as shewn in Figure 5, which is a section of a bottle made
according to the Specification of my said former Letters Patent, No. 1923, and
closed with my present improved stopper; Figure 6 is a section of the said bottlo
shewing the stopper in the position it usually occupies when the bottle has been
opened and its contents discharged. A further advantage resulting from this
construction of stopper is that the bottom end of the india rubber tubo d
coming flush with the bottom of the stem or body a avoids the risk of breakage
either to the stopper or bottle when the bottlo is opened, particularly when the
stopper is made of glass.
Having thus described the nature of my said Invention, and the best means with
which I am acquainted for carrying the same into effect, I wish it to be understood
that I do not confine myself to the precise details herein laid down and shown in
the Drawing, as the same may be varied without departing from the peculiar
charactor of my Invention; for example, the shape of the stopper may be varied,

page_text: and other suitable heavy material than glass may be employed, and an elastic washer
or ring may be employed instead of a tube, but what I claim is,-
The improvements in stoppers for bottles for containing aërated or gaseous
liquids, as herein before described, such improvements consisting in forming the
stem or body of the stopper with a recessed bottom in combination with a ring or
tube of vulcanized india rubber around the lower part thereof, whereby the head of
the stopper always falls foremost into the mouth of the bottle for effectually
closing the same when the bottle is filled, as hereinbefore described and represented
in the Drawing, or any mere modification thereof.
In witness whereof, I, the said John Lamont, have hereto set my hand
and seal, this Tenth day of December, in the year of our Lord One
thousand eight hundred and eighty.
JOHN LAMONT. (LS)