Year: 1886

page_text: Date of Application, 8th May, 1886.
Complete Left, 7th Feb., 1887.
Complete Accepted, 8th Mar., 1887.
1 WILHELM KROMER of Freiburg in the Grand-Dukedom of Baden in the Empire
of Germany Bung-bush Manufacturer do hereby declare the nature of this Invention
to be as follows:
This invention relates to improvements in bung-bushes and bungs, for the purpose
of effecting a perfect, air-tight stoppering of the bung-bushes, as also for the purpose
of preventing spoliation of the cask.
And my invention consists in forming at the inside of the bung-bush, or of the
key-hole of the metal bung, a circular groove, or grooves, into which the bevilled rim
of a sheet-metal disc is forced by punching or pressing the said disc down into the
aperture of the Lush or bung.
On
The lower inside end of the bung-bush is preferably provided with a projecting
rim or studs, or shoulder, above which the circular groove is cut into the metal, and
the sheet-metal disc with its bevelled rim rests upon the said rim or shoulder.
applying a stroke or pressure to the surface of the sheet-metal disc, the latter will be
stretched and its rim forced into the groove, whence it cannot be extracted without
destroying it.
The sheet-metal disc thus forms a stopper to the bung-bush to render said
stoppering perfectly air and water-tight; a suitable packing may be employed,
which may consist of a woven fabric, leather, rubber, or a soft metal such as lead,
surrounding the sheet-metal disc, or lining the groove, into which tho rim of said
disc is forced.
The stoppering thus effected by a thin sheet-metal disc will in general be sufficient
of itself, offering, at the same time sufficient resistance to a strong pressure of the gas
developed inside the cask. The use of cork or wood and other elastic or metal stoppers,
or bungs forced or screwed into the bung-bush, may thus be fully dispensed with.
But in some cases, for instance when the cask is to be sent to a long distance, an
additional stopper or bung may be used besides the sheet-metal disc and forced into
the bush either below or above the said disc, thus affording a double security.

page_text: In providing the surface of the sheet-metal stoppering disc with a suitable stamp
pressed into the metal, for instance that of the firm or trade-mark of the owner, full
security is given against any mischievous attempt of relieving the disc and replacing
the same by another disc, which would at once be discovered."
Also the stoppering disc arranged inside the bush is perfectly secured against any
accidental injury or displacement.
In broaching the cask the tapering end of the tapping-cock, surrounded by an
elastic sleeve is forced into the hung-bush as usual and drives the sheet-metal disc by
deforming the same, out of the groove and into the cask like an ordinary stopper.
The sleeve serves as a packing between the cock and the bush.
When applied to a bung proper, the sheet-metal disc, forced into a groove within
the key-hole of the metal-bung, serves to prevent any fraudulent extraction of the
bung in attempting to withdraw the bung, the sheet-metal disc would be destroyed
and it cannot be replaced without being discovered.
The sheet-metal-discs offering at the same time a perfect means of tight stoppering
and of security, may be supplied as cheap or even cheaper than stoppers of cork or
wood.
W. SPENCE & SON,
8, Quality Court,
Agents for the Applicant.

page_text: Improv and Dunge
I WILHELM KROMER of Freiburg in the Grand-Dukedom of Baden in the Empire
of Germany Bung-bush Manufacturer 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 :—
This Invention relates to improvements in bung-bushes and bungs for the purpose
of effecting a perfect airtight stoppering of the bung-bushes as also for the purpose of
preventing spoliation of the cask.
And my Invention consists in forming at the inside of the bung-bush or of the key-
hole of the metal-bung a circular groove or grooves into which the bevilled rim of
a sheet metal disc is forced by punching or pressing the said disc down into the
aperture of the bush or bung.
The lower inside end of the bung-bush is preferably provided with a projecting rim
or studs or shoulder above which the circular groove is cut into the metal and the
sheet metal disc with its bevilled rim rests upon the said rim or shoulder: On
applying a stroke or pressure to the surface of the sheet metal dise the latter will be
stretched and its rim forced into the groove whence it cannot be extracted without
destroying it.
In the accompanying drawings Fig. 1 is a central vertical section of a bung or tap
hole bush a the tap being inserted. The bore of the said bush is slightly tapered and
the lower end is contracted by a flange c projecting inwards. At the lower end of
the tapered hore and immediately above the said flange e a circular groove b is formed
in the interior of the bush a, this groove may be of any convenient shape; in Fig. 1
it is bevilled in Fig. 3 semicircular and in Fig. 4 rectangular.
Into the bush a fits a circular disc d of sheet metal with a bent down rim. The
disc is shown in section in Fig. 2. On being introduced into the bush a the bent
rim of the said disc d rests on the flange c and is prevented from passing through the
lower aperture of the bush. This disc d forms the closure of the bush a and the said
closure is effected by means of a punch which on being forced down upon the disc d
will stretch the same and cause its bent rim to become flattened and enter into the
groove where it is held secured. This closure or stoppering though sufficient
usually by itself may still be improved and made perfectly airtight by applying
small round piece of fabric e of cotton or linen or the like or of leather or other
suitable material, this fabric e is folded upward around the rim of the disc d as shewn
in Figures 3 and 4 and forced into the groove 6 along with the said rim in order to
tighten the stoppering disc all round. The fabric e may also be impregnated with a
suitable substance such as oil or grease to make the fabric impermeable.
a
By this stoppering disc d forced into the groove of the bush u and surrounded by
a tightening packing e, a perfect airtight closure will be obtained and the disc d will
be capable of resisting a very strong inside pressure of the gas contained in the cask,

page_text: by which pressure the cork-stopper usually applied is frequently thrown off and the
fluid allowed to run out.
The upper surface of the metal disc d may conveniently be provided with the
name of the firm or the trade-mark or any other convenient mark of the owner; by
this means the said disc cannot be removed and replaced by another plain disc without
being easily discovered.
The disc d being securely lodged within and near the bottom of the bush a is
safely held in place against all accidental unstoppering during transport.
In tapping the cask the disc d is removed from the bush a by means of the tap h as
shown in Fig. 1, which tap on being forced down causes the sheet metal disc to be
bent down and out of the groove b, driving it through the lower aperture of the bush
and throwing it into the cask in the same manner as a cork-stopper is usually driven
into the cask. The sleeve 9 Fig. 1 serves to tighten the tap h against the metal
bush a.
The metal of the disc d may conveniently be provided with webs or ribs to give it
an increased power of resistance in employing a very thin metal; its shape may also
be varied as required. The piece of fabric e serving to tighten the stoppering disc d
within the groove may be replaced by any other suitable packing arranged within the
groove b or around the rim of the disc d; for instance a ring of lead or tin surrounding
the said rim may be applied which on being forced into the groove b by the edge of
the disc d will effect a tight packing.
This system of stoppering bung or tap hole bushes also allows the use of an
additional bung or stopper of cork or wood either below or above the disc d within
the hush thus providing a double security and double stoppering.
The sheet metal disc d besides possessing their en
ff von a cheaper
stoppering than cork which latter requires to be imported from abroad.
Fig. 5 shows a metal bung i fitting into a metal bush a as shown in Fig. 1. The
keyhole of the said bung at its lower end is provided with a groove 6 which is
intended to receive a sheet metal disc d as described to be forced into the said groove.
When the disc is in place the bung cannot be removed without first destroying the
disc d. In this case the disc d serves as a security against undiscovered spoliation of
the cask.
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 :-
Metal bung-hole and tap-hole bushes or bungs having an internal groove (b) into
which fits a sheet metal disc (d) with a bent rim which disc on being forced down is
caused to enter with its rim into the said groove and close or stopper the bush either
with or without an additional packing substantially as and for the purpose described.