A FILTER FOR CLEANSING BEER AND OTHER LIQUIDS WHEN DRAWING FROM CASKS OR VESSELS."OTHER
Year: 1881

page_text: LETTERS PATENT to Thomas Dunlevie, of Station Street, Burton-on-Trent, in
the County of Staffordshire, for an Invention of "A FILTER FOR CLEANSING
BEER AND OTHER LIQUIDS WHEN DRAWING FROM CASKS OR
VESSELS."
OTHER
PROVISIONAL SPECIFICATION left by the said Thomas Dunlevie at the
Office of the Commissioners of Patents on the 4th February 1881.
THOMAS DUNLEVIE, of Station Street, Burton-on-Trent, in the County of
Staffordshire. "A FILTER FOR CLEANSING BEER AND OTHER LIQUIDS WHEN
DRAWING FROM CASKS OR OTHER VESSELS."
Attached to the cock or other appliance for drawing off the beer, wine, or other
liquor from any vessel, I connect by means of a union coupling a hollow cylinder
with spherical or conical ends, one of which has fitted in it the union nut & tail
piece connected with discharge from cask, and the other fitted with a connection
for drawing off through pumps or otherwise. This cylinder I divide into four
separate compartments or chambers by means of three discs of finely perforated
copper or wire gauze; on the top of the second chamber is a small air vessel or
retainer, which is fitted with a nut & screw for taking off to allow of the chamber
being washed & cleared of any foreign matters or sediment that may collect; on
the bottom of the third is fitted a screw & cap for a similar purpose.
The whole is
tinned inside & out to prevent corrosion or formation of verdigris.
The beer, wine, or other liquid passing from the cask is filtered or cleansed from
all impurities by means of the three discs of perforated copper or wire gauze
forming the chambers in the hollow cylinder, through which it has to pass; and
the air vessel or retainer on the top of the second chamber, by reason of the air
contained therein, causes the beer or other liquid to be forced gently through the
pipes, and delivered at full bore on the least motion of the pump lever without
causing any shock or strain on the contents of the cask, enabling the whole to be
at once drawn off clear and bright without loss of quantity or time necessary for
settling or clearing.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Dunlevic in the Great Seal Patent Office on the 4th
August 1881.
Thomas DunleVIE, Station Street, Burton-on-Trent, in the County of Stafford-
shire. "A FILTER FOR CLEANSING BEER AND OTHER LIQUIDS WHEN DRAWING
FROM CASKS OR OTHER VESSELS."
Attached to the tapping cock, syphon, or other appliance on the barrel for drawing
off the beer, cyder, or other liquid containing sediment, and liable to become thick
or cloudy, is a hollow cylinder with conical ends, in one of which is fitted and
soldered a union nut and swivel for connecting with the cock, &c., and in the other
is also fitted and soldered a union to connect with the suction pipe of a beer engine
or a bib nosed cock for drawing the liquor direct from the barrel; this cylinder is
divided into four separate compartments or chambers by means of three discs of
perforated copper or brass wire gauze of different gauges or meshes; on the top of
the second chamber is fitted an air vessel or retainer by means of a brass screw for
disconnecting, and in the bottom of this screw is fixed a small pipe for directing
the flow of air on to the second disc of wire gauze, and thence direct through the
drawing off pipe or cock. On the bottoms of the second and third compartments
are fitted and fixed two small brass caps and screws with thumb nuts for taking out
to allow of the compartments being washed and cleared from any sediments, hops, or
foreign matters that are retained by the discs of wire gauze. The whole apparatus,
with the exception of the brass screws, cocks, unions, is made of copper or other
suitable metal tinned inside and out to prevent corrosion and the formation of
verdigris or any other deleterious or poisonious matters.
The beer, cyder, or other liquid contained in the barrel is filtered or cleansed
from all impurities by means of the three discs of perforated copper or brass wire
gauze forming the chambers in the hollow cylinder, through which the liquid has
to pass, and all sediments being thereby intercepted or retained the air vessel or
retainer on the top of the second chamber, by reason of the air contained therein,
allows the liquid to be gently forced through the pipes or cock, and the small pipe
attached thereto directs the flow of air on to the second disc, and towards the
outlet, preventing the possibility of the contents of the cask becoming disturbed
or clouded by any quick jerk or undue strain given to the pump lever, allowing the
liquid to be delivered at full bore, entirely dispensing with need of a vent peg,
thereby preventing any loss of quantity or strength by evaporation, and preventing
the contents of the cask being flat or dead by contact with the atmosphere, the
whole contents being drawn off clear and bright.
Figs. 1 and 2 show the application of the filter connected with a barrel by an
ordinary tapping cock. A the hollow cylinder with conical ends B, B, divided into
compartments by perforated copper or wire gauze discs b, b, b; C, the air vessel or
retainer fitted into the union connection D; d, the small air pipe for directing the
flow of air from the vessel through the discs; E, the union nut and swivel for con-
necting with the tapping cock, syphon, &c.; F, the union coupling for connecting
with suction pipe of the beer engine or bib nosed cock for drawing direct from the
cask, as shown in Fig. 2; G, G, the caps with thumb nuts for washing out; H, the
tapping cock for barrel.
In witness whereof, I, the said Thomas Dunlevie, have hereunto set my
hand and seal, this Third day of August, in the year of our Lord One
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THOS. DUNLEVIE. (L.S.)