Improvements in or connected with the Venting of Casks and the like.
Year: 1897

page_text: Date of Application, 6th Mar., 1897
Complete Specification Left, 3rd Dec., 1897-Accepted, 19th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Venting of Casks and the like.
I, JAMES RUSSELL SWIFT, Great Staughton, St. Neots, in the County of
Huntingdonshire, Barrister at Law, do hereby declare the nature of this invention
to be as follows:-
:
This invention is an ordinary bung with a collar or other contrivance on the
under side for attaching to the bung a bag or bladder of india rubber or other
material of sufficient size for the barrel or receptacle to which the invention is
applied. The bung or other contrivance has a passage bored through it for venti-
lation. The passage may be temporarily stopped or left open. When open it
admits air into the bag or bladder causing it to expand and fill the space left
vacant by drawing off the liquid and thus preventing it becoming stale.
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COMPLETE SPECIFICATION.
Improvements in or connected with the Venting of Casks and the like.
I, JAMES RUSSELL SWIFT, Great Staughton, St. Neots, Hunts, Barrister at Law,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:―
It consists of an air and water tight flexible bag of rubber, leather, skin or other
material or a combination of them having a neck in a convenient position for the
cask vessel or purpose for which the bag is used. To the neck is fitted a bung or
stopper of a shape and size that may be required. The bung or stopper must be
made to admit air or gaseous fluid into the bag for pressure and when needed, to
exclude the air or gaseous fluid so as to prevent the continuous pressure injuring
the bag or penetrating to the beverage. The bung or stopper and the tap may be
fitted either with smooth or screwed joints, and these may or may not be a folding
float of strips of cork or other light material placed between the bag and the
beverage.
The drawings herewith are as follows namely. Fig. 1 is the surface of a bung
having a vent hole or air passage at A, in the centre.
Fig. 2, is a vertical section of the bung, B is the air passage. Its opening is
shown by A in Fig. 1, which may be fitted with a vent peg or stopper. C, C, is a
projection of the bung square or otherwise on which to fit a key for driving home
the bung when it is screwed on D D is the body of the bung which is either smooth
or cut as a screw and fitted to a corresponding screw in the cask or other vessel,

page_text: E, E, is the portion of the bung which projects into the inside of the cask or other
vessel and on which the bag is fastened..
Fig. 3 is the bag which is placed inside the cask or other vessel F, its neck is
secured to EE the lower part of the bung as shown in Fig. 2. The bag secured
to the bung is put into the cask or other vessel in a state of collapse and the bung
is driven or screwed home until air tight so that when the beverage is drawn out
of the cask or other vessel the air without coming in contact with the beverage
enters the bag by the air passage and fills the space previously occupied by the
drawn off beverage. It thus keeps the beverage or contents of the cask or other
vessel free from the action of the air and other contaminations and prevents injury
to the cask or other vessel from air pressure. Fig. 4 is a folding float.
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:
First is a combination of the bag and the bung as herein before set forth.
Secondly a combination of these with a cask or other vessel with such fittings
as are hereinbefore described.
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