Year: 1888

page_text: I GEORGE RADFORD WILSON Trading as Wilson Blessley, of Paul Street Finsbury,
in the County of Middlesex ('oppersmith, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement
1
These improvements relate to the construction of urns or other apparati for
making coffee, and consist of two chambers or vessels joined together by means of
a screw joint
The lower of these vessels contains the water which is boiled by means of heat
applied, and in the upper vessel is contained the coffee to be drawn off for use
These chambers or vessels are connected together by means of a pipe through which
the boiling water from the lower chamber is forced into the upper chamber by
means of heat Another pipe from this upper chamber traverses the length of the
lower chamber and then emerges outside and is fitted with a tap from which is
drawn the coffee from the upper chamber
Another pipe rises from the top of the lower chamber and passes through the
upper chamber and out into the open air, through the top of the lid of the upper
chamber forming an escape pipe for steam or boiling water from the lower chamber
These three pipes are so placed that in crossing the neck forming the junction
between the two chambers, a tap or valve is so placed in each pipe that one lever
worked from the outside of the urn, actuates the three valves or taps at one and
the same time and the disposition of these valves or taps is that they cannot all
three be open or shut at the same time, but that when the pipe is left open through
which the boiling water ascends from the lower to the upper chamber, then the
other two pipes are blocked or closed and when these two pipes viz, the escape pipe
and the draw off pipe are open then the third pipe or rising service pipe is entirely
shut off

page_text: In the upper chamber is a cylindrical, moveable and partially perforated box for
containing the coffee, and this box fits over and is temporily secured to the pipe up
which rises the boiling water from the lower chamber
The lower chamber is filled with water from an opening some distance from its top
so that it cannot be entirely filled up and the pipe which conveys the boiling water
from this lower chamber to the upper one does not reach the bottom of this chamber
by at least an inch so as to ensure some water being always at the bottom
In order that the nature of my said improvements may be more fully under-
stood I will proceed to describe the several figures on the sheet of drawings hereunto
annexed, all of which are marked with the like letters of reference to the like parts
throughout
Figure 1 is a vertical section taken through centre of the improved apparatus
in which A is the lower chamber and F is the upper chamber E is the pipe by
which communication is established between the two chambers B is the screw cap
which when removed allows of water being poured into chamber A, and when
screwed tight down makes an air tight joint is the moveable cylindrical perforated
box to contain the coffee, having the handle G and D is the moveable hd to the
upper chamber F
K is the lever actuating the taps or valves in the three
pipes E M and N as before described, M being the escape pipe for steam and N the
draw off pipe for coffee from upper chamber F
H is the space under chamber A from where heat may be applied to the said
chamber A
Figure 2 is a section to a larger scale shewing the junction of the two chambers
and the handle of lever K so-turned as to leave pipe E open and pipes M and N
closed, thus these taps are now arranged for making the coffee or in other words the
boiling water is free to rise up the pipe E pass through the coffee in box C and
fill the upper chamber F
Figure 3 is a section in every way similar to Figure 2, except that the handle of
lever K is here turned down, so that the pipe E, is blocked, and pipes M and N are
open M for the escape steam from chamber A, and N, so that the liquor in
chamber F may now be drawn off through pipe N and delivered out of tap S
I will now proceed to explain the action of my said improvements
I first fix the lever K that actuates the valve in the three pipes so that pipe E is
open, and consequently pipe M and N are closed as before described, then I fill up
the chamber A with water and screw on the cap B and place the coffee in the box
and fit down the cover or lid D and then apply heat to the chamber A till the water
has boiled up the pipe E and forced its way through the coffee in box Cinto the
upper chamber F
"I then turn the lever K so that the pipe E is dead blocked
and pipes M and N are open
I then refill the lower chamber A with water and
screw on cap When the water in this chamber again begins to boil and the pipe M
acts as a safety pipe Pipe N is now open so that the coffee can be drawn off at cock S
When all the liquid coffee is drawn off I take out the waste coffee grounds in box C
and refill and replace same then turn again the lever K so that the pipe E is open
as at first, when the boiling water at once ascends into the upper chamber to make
more coffee
As my said improvements are capable of various modifications without departing
from the principle thereof, I do not restrict myself to the materials, dimensions, or
the precise form or placement of the several parts thereof
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
-
1st A double action tap cock or valve placed between the upper and lower
chambers of a coffee making urn, and so arranged that when the lever actuating the
tap is in certain position, then one pipe is open, and the other two are shut, and
when this lever is moved into an opposite position, then these latter mentioned two
pipes are open and the first mentioned pipe is shut off.

page_text: 2nd The combination of the aforementioned double action tap with a pipe through
which boiling water is forced upwards automatically into a chamber where coffee
15 made by means of the boiling water
3rd A pipe through which the liquid coffee is drawn off traversing a chamber in
which hot or boiling water is prepared for the next brewing of coffee after the upper
chamber has been exhausted of its contents thereby making the action autoinatic.
Dated this 12th day of June 1888
HUGHES & SON,
5, Chancery Lane, London, WC,
Agents for the Applicant