Improvements in Bottle Stoppers, Drawer Knobs, and like Articles.
Year: 1897

page_text: Complete Specification Left, 17th Aug., 1898-Accepted, 24th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Bottle Stoppers, Drawer Knobs, and like Articles.
I, CHRISTINA ELIZABETH RAWBON, of Longsight, Manchester, in the County of
Lancaster, do hereby declare the nature of this invention to be as follows;-
This invention relates to the stoppers or caps for bottles, jars or similar articles,
and is designed to provide a stopper or cap in which the head or cover will be
firmly attached to the base.
It consists in constructing the base of the stopper or cap formed with a nick,
groove, indentation or enlargement, and applying thereto a head of plastic
material in the wet or plastic state, and compressing it into the groove or over the
enlargement to prevent the detaching of the head.
In carrying out the invention I make the base of a solid material such as cork,
wood, vulcanite, glass or the like, and at or near the end I form a groove or
indentation, preferably annular, or a rib or projection either annular or at
intervals. The head I make of prepared clay or other composition, capable of
setting hard when dry. This composition or material I form in a mould of the
desired shape, and compress around the end of the base, so as to embed into or
A cement may be applied
around the nick, groove, rib, or projection thereon.
to cause the two materials to adhere.
When an elastic material such as cork or rubber is employed for the base of
the stopper, the nick or groove may be formed by compression by affixing a cord
or wire tightly around it. In other materials the groove or projection may be
cut, turned, moulded or otherwise formed therein.
When applied to caps or covers, a strip or lining of cork, rubber or other elastic
material may be affixed in the interior of the cap or head in a similar way.
1 th: 19th day of November 1987.

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement;-
This invention relates to the stoppers or caps for bottles, jars or similar articles,
and is designed to provide a stopper or cap in which the head or cover will be
firmly attached to the base.
It consists in constructing the base of the stopper or cap formed with a nick,
groove, indentation or enlargement, or of undercut or dovetail shape, and applying
thereto a head of plastic material in the wet or plastic state, and compressing it
into the groove or over the enlargement to prevent the detaching of the head.
The invention will be fully described with reference to the accompanying draw-
ings in which as examples several forms of stoppers are illustrated to which the
invention is applied.
Fig. 1. Elevation of cork stopper.
Fig. 2. Section of same showing head A of plastic material secured by being
compressed into a groove.
Fig. 3. Section of stopper showing head A. of plastic material compressed over
an undercut or dovetail enlargement at the end of cork.
Fig. 4. Section of screw stopper showing head A of plastic material secured by
being compressed into an annular groove.
Fig. 5. Section of screw stopper showing head A. of plastic material secured by
being compressed into the grooves or threads formed by the screw.
The head A of the stopper I make of prepared clay or other plastic material or
composition capable of being moulded into shape and compressed, which will set
or dry hard and firm without having to be heated to such a degree as would
injure cork, wood, vulcanite, rubber or other such material that may be employed
to form a stopper.
The base B of the stopper is made of a solid material such as cork, wood,
vulcanite, glass, or other suitable substance and of any desired shape such as
taper, cylindrical or screw.
At the top end of the stopper B I form a groove or nick b as in Figs. 2 and 4 of
annular form, or I form it of dovetail shape as in Fig. 3 or undercut in any other
form, or it may be made with a rib or projection either annular or aft intervals.
In the forms shown in the Figs. 2, 3 and 4 the bases B are in each case prepared
with the special groove or shape b and cut into the desired length, and in the
modification shown in Fig. 5 a long length of wood (or other suitable material)
is formed with screw threads and cut into the desired length the threads & forming
the grooves to receive the plastic material which hold it securely when moulded
therein.
The prepared clay or composition is placed in a mould of a shape corresponding
to the shape of head required upon the stopper and it is compressed tightly around
the base B so as to embeded into or around the groove, nick or rib thereon.
A rubber packing ring such as C may be applied to screw stoppers.
When an elastic material such as cork or rubber is employed for the base of
the stopper the nick or groove may be formed by compression by affixing a cord
or wire tightly around it. In other materials the groove or projection may be
cut, turned, moulded or otherwise formed therein.
When applied to caps or covers, a strip or lining of cork, rubber or other elastic
material may be affixed in the interior of the cap or head in a similar way.
For drawer knobs or other handles or articles a top of prepared composition may
be secured on a base of wood or the like in a similar manner.
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
1. A. bottle stopper or similar article formed with a top of piastic material
secured to the base by means of a groove, rib. projection auth

page_text: or around which the plastic composition or material is tightly compressed sub-
stantially as described.
2. A bottle stopper or similar article formed or constructed substantially as
described and shown with reference to either of the figs. of the drawings.
Dated this 15th day of August 1898.
WM. P. THOMPSON & Co.,
Manchester, Liverpool & London, Patent Agents.