Improvements in Bottle Stoppers.
Year: 1890

page_text: Date of Application, 4th Dec., 1890
Complete Specification Left, 4th Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Bottle Stoppers.,.
Tanju
I, WILLIAM PRIESSNITZ BONWICK, of 59 Blomfield Road, Paddington; in
the County of London, Tutor, do hereby declare the nature of this invention to
be as follows
.
T
This invention has reference to improvements in bottle stoppers..r
A bottle stopper according to. this invention comprises a central stem of: suit-
able material for example. glass, provided externally with a number of teeth or
projections, and a ring tube or sheath of cork or other suitable material (herein=
after called a cork sheath) that surrounds or covers the said stem and engages
with the teeth or projections. thereon, these teeth or projections being so arranged
that whilst they will permit of the cork, sheath being readily passed: endways
over, the stem so as to surround the same, they will by: becoming indented in the
cork sheath, effectually prevent the latter from being removed from or rotated
upon the stem so long as, it is intact... Such a stopper when applied to the mouth
of a bottle formed, with an internal screw thread can: be used after the manner
of, an ordinary, screw stopper, the cork sheath readily adapting itself to the
screw thread in the bottle mouth.
ויף
WM. P. BONWICK.
1
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Bottle Stoppers.,
WILLIAM PRIESSNITZ BONWICK, of 59 Blomfield Road, Paddington; in the
County of London, Tutor, do hereby declare the nature of this invention and win
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
3.
This invention has reference to improvements in that kind of stoppers for
bottles, jars and the like (hereinafter included in the expression bottle) in which
a body of suitable material such as glass is faced with elastic or yielding material
such as cork to afford an air tight closure and the invention has for object to
secure the facing to the body in a more effectual and desirable manner than
heretofore as I will now explain by reference to the annexed drawings in which¨'--'
Fig. 1 shews in vertical section my improved stopper applied to a bottle mouth
having an internal screw.thread..
.
miy In
Fig. 2 is an elevation of the body of the stopper without the elastic or yielding
facing.
Fig. 3 is an elevation of the complete stopper.
.
Fig. 4 is a development of the stem of the stopper with the teeth or projections
thereon.
1
The remaining figures are hereinafter referred to.
1 is the stem which may be of glass earthenware or other suitable material; it
is provided externally, with a number of teeth or projections 2.3 is a ring or
tube of elastic or yielding material, say cork (hereinafter called the cork facing)
that surrounds or covers the said stem and engages with the teeth or projections 2
thereon. These teeth or projections are made preferably of ratchet or wedge
shape as-seen in side view and as will be seen are-arranged so that whilst they
will permit of the cork facing 3 being readily passed endways into position over
TD 077

page_text: the stem so as to surround the same, the teeth will by becoming embedded in the
cork effectually prevent its being removed from or rotated upon the stein so long as
the cork remains intact. The teeth or projections 2 are spaced apart as shewn
so that the portions of the cork located between the teeth or projections can
expand and come into close contact with the stem and effectually prevent escape
of gas between the cork and the stem. The teeth or projections 2 are preferably
made integral with the stem 1.
.
Such a stopper (Fig. 3) when inserted in the mouth of a bottle 4 formed with
an internal screw thread as shewn in Fig. I can be used after the manner of an
ordinary screw stopper the cork facing readily adapting itself to the screw thread
in the bottle mouth.
The stopper shewn in Fig. 5 has its head 1° formed with a groove 1 and with
lateral fins or webs 1 to facilitate the turning of the stopper.
Stoppers constructed according to this invention can be used for plain mouthed
bottles as shewn in Fig. 6. The cork facing may be made slightly conical if
desired as shown.
Fig. 7 shews partly in vertical section and partly in elevation the application
of my invention to a stopper or closure having a diameter suitable for a wide
mouth bottle or jar. In the example the stopper is shewn in conjunction with an
internally screw threaded bottle or jar, but it will be evident that it can be
applied to a bottle or jar that is not internally screw threaded.
For large stoppers the cork facing may be in the form of a strip wound
upon the toothed stem its two ends being cemented or otherwise secured together.
To facilitate the insertion of the stem, whilst also reducing the liability to
splitting of the cork facing, the facing may, when the stem is being forced
through it, be supported externally by a tubular holder 8 as shewn in Fig. 8.
In cases where the cork is liable to become very dry, as when the bottle is
stored in an upright position for a long time, the stopper may be provided with a
washer of suitable material such as india rubber arranged to be compressed between
the head of the stopper and the bottle neck and prevent any escape of gas that
might otherwise take place in the case of bottles charged with aerated liquid, or
the entrance of air in the cases of bottles containing preserved substances. Such a
washer is indicated at 3* in Fig. 3.
Although the stem 1 is shewn of cylindrical form, it may in some cases be made
of other forms, for example it may be made slightly conical.
Also the teeth or projections instead of projecting radially from the stem may
be inclined thereto at angles other than right angles, or some may be so inclined
whilst others are radial as shown in Fig. 5.
The head 1 of the stopper can be made of any suitable size and shape, and
may be milled or roughened either entirely around or partly around its edge or
periphery to enable it to be readily manipulated. By the means described I am
enabled to combine without the use of cement, a glass stem with a cork facing in
such a manner that they act as one piece. In the case of internally screw threaded
bottles my invention enables india rubber and other objectionable materials or
compositions usually employed for obtaining a tight joint, to be dispensed with
and the valuable advantages respectively incidental to the use of screw stoppers
and of corks to be obtained.
As will be obvious stoppers or closures according to this invention can be used
with bottles, jars or other vessels for containing various substances.
Bottle stoppers according to this invention can be variously modified from those
shown by way of example in the drawings, particularly as regards the number and
shape of the teeth or projections and the formation of the head 1*.
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 -
1. A bottle stopper constructed with a stem having outwardly projecting teeth

page_text: or projections, and a surrounding facing of suitable elastic or yielding material
such as cork adapted to cover the stem, the teeth or projections of which are
so shaped and arranged that they will become embedded in the substance of the
said facing or covering material and will effectually hold the same in place
upon and around the stem, and will, so long as the facing or covering remains
intact, prevent it being rotated upon or removed endwise from the stem substantially
as herein described.
2. In a bottle stopper a stem constructed with teeth or projections such as
described and shown for the purpose specified.
Dated this 4th day of September 1891.
WM. P. BONWICK.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.