Improvements in Drawing Off Taps.
Year: 1893

page_text: Date of Application, 5th Sept., 1893-Accepted, 14th Oct., 1893
COMPLETE SPECIFICATION.
Improvements in Drawing Off Taps.
I, OTTO RATHKE, Mechanical Engineer, of 18 Augerstrasse, Hamburg, in the
Empire of Germany, 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:-
The present invention has for its object to enable fluids to be drawn from entirely
closed casks by means of a specially constructed tap under the pressure of any gas,
the gas reaching the fluid solely by means of the tap itself.
By this method beer, for example, can be drawn out under air or carbonic acid
gas pressure without the necessity of withdrawing the tap or of connecting the cask
by special fittings to a carbonic acid gas holder.
On the annexed drawing
Figure 1 shows a vertical section of the tap looked at from the side, whilst
Figures 2, 3, and 4 represent the same in plan and partial section on the broken
line A-B in different positions of the tap.
The tap shank G has two separate passages kk2. To these correspond two bored
ways through the cone K of the tap and which are marked b. The two ends of
the bore bare widened out. On the right of the cone a screwed nozzle S is formed
on the shank with a channel 3 therein communicating with the channel k². This
nozzle serves for the connection of a tube L from the carbonic acid gas holder.
The channel terminates somewhat above the opening k and serves as an air
inlet.
k
If the fluid contained in the cask or other receiver is to be drawn out under
atmospheric pressure the nozzle S has to be closed by an india rubber disc.
Figures 1 and 2 show the position of the cone with both passages k k² open, and
the tap allows the discharge of, for example, beer, from the cask it may be driven
into. Figure 3 shows the tap turned to the extent of about 45°,
the passage
being still open but being closed. In this position the nozzle S can be connected
to a carbonic acid gas receiver; this gas then passes along the passage
back part of the air way and thence to the fluid. Figure 4 shows the tap turned
another 45° and both passages k, k² closed.
into the
The opening of the passage 2 is arranged somewhat over the outlet of the main
way in order that the flow of the fluid into a raised vessel may cease immediately
the said opening is covered by the level of the fluid in the vessel, and air cannot
reach the interior of the cask.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A drawing off tap in which besides the outlet way for the fluid two other
passages are provided of which 2 forms the inlet for atmospheric air and
passage the inlet if required for any other gas (for example carbonic acid gas)
to the liquid to be drawn out, arranged with the object of enabling the pressure
required for the pouring out of the liquid to be obtained solely through the body of
the tap.
Dated this 5th day of September 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.