Improvements in or relating to Vent Pegs or the like.
Year: 1897

page_text: Improvements in or relating to Vent Pegs or the like.
I, WILLIAM ODELL, Brewers' Agent, 20, St. James Square, Notting Hill, in the
County of Middlesex, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in vent pegs or the like, and has for its
object, to provide a vent peg which, while preventing the egress of any odour or
vapour or liquid from the inside of the cask or other vessel to which it is applied,
yet automatically admits sufficient air to allow the liquid in the vessel to be
readily withdrawn and prevent any tendency to the production of a vacuum above
the liquid contents.
The improved vent peg comprises a small hollow body of cylindrical or other
shape, having an extension at its lower end which may, preferably, be in the form
of a hollow tapered screw, through which communication is made between the
body of the peg and the interior of the vessel.
The top end of the body of the peg is closed by a cover or cap fitting so as to
make an air tight joint.
A hole is made through the wall of the body, leading from the inside of it to
the outside air. This hole is closed at its inside end by a suitable valve, which
may be kept in its seating by gravity, a spring, or any suitable device.
The action of the device is as follows;--Assuming the valve to be in its place
and the outer cover or cap put on:-Any suction applied to the lower end will
create a partial vacuum in the interior of the body of the peg, air from outside
will rush in through the opening in the wall, and, raising the valve will enter
the vessel through the peg.
On the other hand, pressure applied to the lower end will only tend to force
the valve more firmly into its seating, thus effectually closing the outlet to the
air.
Dated this 18th day of October 1897

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
-
This invention relates to improvements in vent pegs or the like, and has for its
object, to provide a vent peg which, while preventing the exit of any odour or
vapour or liquid from the inside of the cask or other vessel to which it is applied,
yet automatically admits sufficient air to allow the liquid in the vessel to be readily
withdrawn and prevent any tendency to the production of a vacuum above the
liquid contents.
The improved vent peg comprises a small hollow body of cylindrical or other
shape, having an extension at its lower end which may, preferably, be in the form
of a hollow tapered screw, through which communication is made between the
body of the peg and the interior of the vessel.
The top end of the body of the peg is closed by a cover or cap fitting so as to
make an air tight joint.
A hole is made through the wall of the body, leading from the inside of it to
the outside air. This hole is closed at its inside end by a suitable valve, which
may be kept in its seating by gravity, a spring, or any suitable device.
The action of the device is as follows:-Assuming the valve to be in its place
and the outer cover or cap put on:-Any suction applied to the lower end will
create a partial vacuum in the interior of the body of the peg, air from the outside
will rush in through the opening in the wall, and, raising the valve will enter the
vessel through the peg.
On the other hand, pressure applied to the lower end will only tend to force
the valve more firmly into its seating, thus effectually closing the outlet to the air.
In the accompanying drawings,
Figure 1 is a vertical central section of the vent peg and
Figure 2 is a plan, with the cover and valve removed.
A is the hollow body of the vent peg and B the conical extension with a pas-
sage B¹ communicating at one end with the interior of the vessel to which the
plug is applied, and at the other end with the interior of the body A.
C'is the cap, rendered air-tight by a washer C¹.
D is an inlet hole affording communication between the outside atmosphere and
the interior of the body A.
The upper and interior end of the hole D is closed by a valve E; this valve will
rise and permit air to pass by way of the hole D and down the passage B¹ into
the interior of any vessel into which the end B is screwed, upon the lowering of
the level of the liquid in such vessel, but upon any tendency towards a reversal
of the flow in the passages B' and D, the valve E will close.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is : —
1 A vent peg provided with a non-return valve in a passage which affords
communication between the outer air and the interior of the vessel to which the
peg is applied substantially as described.
Dated this 22nd day of July 1898.
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