IMPROVEMENTS IN STOPPERS FOR BOTTLES AND OTHER VESSELS HAVING SCREW THREADS FORMED IN THEM and
Year: 1884

page_text: I, JAMES SCOPE DAVISON of Monkwearmouth Bottle Works, Fulwell Road,
Sunderland, in the County of Durham, Bottle Manufacturer, do hereby declare the
nature of my Invention for "IMPROVEMENTS IN STOPPERS FOR BOTTLES AND
OTHER VESSELS HAVING SCREW THREADS FORMED IN THEM and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
"
This Invention relates to stoppers of the kind designed for use with bottles or
vessels in the necks of which a female screw thread is formed to receive a male
thread or threads formed on the stopper.
According to my Invention such male thread or threads is or are formed of
metallic wire twisted round the cylindrical stem of the stopper the ends of such
wire thread or of each such thread when more than one is used being bent inward
in such a manner that they will enter holes or recesses formed in the stem of the
stopper to retain the thread or threads in position upon such stem. To prevent
corrosion the metallic wire used to form threads as described is coated with a
suitable non-corrosive substance as for instance by galvanising or tinning or
electro plating as well understood.
The wire is made of elastic material such as steel or brass, so as to have a spring
action in order that it may be readily placed in position upon the stem and be
easily removed therefrom for the purpose of renewing a cork or other packing piece
used around the upper part of the stem of the stopper. and further that the metal
thread may accominodate itself to any irregularities such as are in practice found
to occur in the female thread of the neck or opening of the bottle or vessel to be
closed.
The cork or other packing ring abuts against the head of the stopper and fits
closely within the upper part of the bottle neck or interior of the vessel to be
closed when the stopper is screwed home therein.so as to effect an air tight closure.
Fig. 1 of the accompanying Drawings is a vertical section showing the neck of a
bottle formed with a female screw thread and having one of my improved stoppers
screwed into it and Fig. 2 is a cross section of the stopper in the line A. B. of
Fig. 1. The stem and top of this stopper are moulded in one piece of suitable hard
material such as that now commercially known as ivorine; or it may be of porcelain

page_text: or glass. The body or stem a of the stopper has formed in it two holes or
recesses b, b¹ one below the other, into which enter freely the ends of the spiral
wire c which are bent round for this purpose as shown more clearly in Fig. 2,
d is a packing piece of cork or other suitable material in the form of a ring.
When it is required to be renewed the wire c can (being made as a spring) be
removed from the stem a by withdrawing the bent ends of the wire in any suitable
way from the holes or recesses in the stem. Conveniently this may be done if
sufficient play be provided by means of an instrument such as represented in
Figs. 3 and 4 and which resembles a fork having wedge-shaped prongs f, f¹ that
can be forced between the wire c and the stem of the stopper a so as to disengage
the bent ends of the wire c from the holes or recesses b; 6' whereupon if the fork
be drawn back it will remove the wire c from the stem a and then the packing
ring d can be pulled off and another one be substituted around the stem a. Fig. 5
is an elevation (with bottle neck in section) and Fig. 6 a section at right angles
to Fig. 5 of a modification of my improved stopper. In this arrangement a recess
or groove with an inclined bottom is formed in the stem to make easy the
insertion of the bent ends of the wire into the holes b. b. The wire employed
may be of any suitable section to suit the form of female thread in the bottle or
vessel to be stoppered. Figs. 7 shew some of the various forms of section of wire
that may be used.
It will be evident that metallic wire threads according to my Invention.
constituting springs may be made to only partly surround the stem, or to extend
more than once around it.
Also that more than one such thread may be used.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. In a stopper for a bottle or other vessel. having a female screw thread within
its neck or opening, forming around or partly around the stopper a spring thread
or threads of metallic wire substantially as hereinabove described and illustrated.
2. In a stopper for a bottle or other vessel having a female screw thread such as
hereinabove referred to making the male thread or threads upon the stopper as a
metallic spiral spring or springs capable of being readily removed and replaced as
and for the purpose hereinabove described and set forth..
3. In a stopper of the kind hereinabove referred to the combination of a stem or
body made of ivorine and a thread or threads made of non-corrosive wire in the
manner and for the purpose specified.
4. The improved stopper shewn in and described with reference to Figs. 1 and 2
of the Drawings.
5. The improved stopper shewn in and described with reference to Figs. 5 and 6
of the Drawings.
Dated this 05th day of tamil 1001