AN IMPROVEMENT IN STOPPERING BOTTLES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, THOMAS MCDONALD, of Griffin Cottage, Chapel House Street, Millwall, in
the County of Middlesex, Pattern Maker, do hereby declare the nature of said
invention for "AN IMPROVEMENT IN STOPPERING BOTTLES" to be as follows:-
According to this invention the upper part of the bottle neck is made externally
of a conoidal form with an external screw thread and a cap is provided of corre-
sponding internal form with an internal screw thread so that the cap can be
placed upon the bottle neck and there secured by giving it about a quarter turn,
the joint between the inner surface of the top of the cap and the bottle mouth
being made tight by a cork or other similar packing piece in the cap.
The exterior circumference of the cap is milled and recesses or pins are provided
to facilitate screwing it on or off.
The caps can be made from any suitable material such as glass, porcelain, metal
et cetera, and can be applied to every description of bottle or vessel to which they
may be applicable.
COMPLETE SPECIFICATION.
I, THOMAS MCDONALD, of Griffin Cottage, Chapel House Street, Millwall, in
the County of Middlesex, Pattern Maker, do hereby declare the nature of my
invention for "AN IMPROVEMENT IN STOPPERING BOTTLES and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
According to this invention the upper part of the bottle neck is made externally
of a conoidal form decreasing in diameter as it proceeds upwards, and with an
external screw thread, and a cap is provided of corresponding internal form with
[Price 4d1

page_text: an internal screw thread so that the cap can be placed upon the bottle neck and
there secured by giving it about a quarter turn, the joint between the inner
surface of the top of the cap and the bottle mouth being made tight by a cork or
other similar packing piece in the cap.
The exterior circumference of the cap is milled and recesses or pins are provided
to facilitate screwing it on or off.
The caps can be made of any suitable material such as glass, porcelain, metal
et cetera, and the invention can be applied to various kinds of bottles, or other
vessels.
Referring to the accompanying sheet of illustrative drawings Fig 1 shews a
bottle neck and cap according to my invention the cap being in section and Fig 2
is a side view of the same. Fig 3 is a plan or top view of the stopper.
a is the bottle neck the upper portion of which is made externally of conoidal
form decreasing in diameter as it proceeds upwards, and with an external screw
thread a as shown so that the upper portion of the bottle neck resembles
externally a male screw decreasing in diameter as it proceeds upwards. b. is the
cap which is made of corresponding internal form so that it resembles a female
screw decreasing in diameter as it proceeds upwards, and c its internal screw
thread. d is a seating of packing material such as cork secured within the cap
for ensuring a gas tight closure of the bottle mouth. It is advantageous in order
to prevent the seating leaving the cap when the latter is removed from a bottle to
use a washer or pad made to fit into a recess within the cap below the seating, but
other suitable means may be employed for the purpose. The cap may be milled
externally as shown and be provided with recesses e. e to facilitate screwing it on
and off. With the bottle neck and cap formed as described the cap can be fastened
on the bottle neck or removed therefrom by a partial rotation.
It will be obvious that two or more screw threads may be employed in the cap
and on the bottle neck respectively if desired, instead of one only as shown in the
drawings,
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 I do
not claim generally providing a bottle neck and a stopper with screw threads but
what I do claim is
1. Making the exterior of the bottle neck at or near its upper part in the form
of a screw decreasing in diameter as it proceeds upward substantially as described.
2. The use for stoppering a bottle having a neck such as hereinabove described
of a cap made internally in the form of a female screw decreasing in diameter as it
proceeds upwards substantially as and for the purpose specified.