IMPROVEMENTS IN COFFEE-POTS
Year: 1884

page_text: IEBENEZER BOYES of Albert Road, Peckham, in the County of Surrey Coffee
Dealer do hereby declare the nature of the said Invention for IMPROVEMENTS IN
COFFEE-POTS to be as follows:-
The Invention has for its object improvements in that class of coffee pot for
which I obtained Provisional Protection on the 6th of July 1883 N° 3363.
In such description of coffee pot the coffee is boiled in an inner vessel which is
fitted within an outer vessel and is of such size as to leave a space between the
two vessels to contain water.
The two vessels are securely fitted together so as to make a tight joint at their
junction and a pipe connected to the upper part of the outer vessel is passed into
the inner vessel into which it descends nearly to the bottom thereof.
The coffee pot being placed on the fire the water in the outer vessel is caused to
boil, the steam thence passes by the tube into the inner vessel and boils the contents
thereof, then after the boiling is completed the vessel is removed from the fire and
the contents of the inner vessel are poured out therefrom by tilting the coffee pot
in the manner of emptying an ordinary jug. In order to prevent the contents of
the inner vessel from being drawn into the outer vessel through the steam tube by
any vacuum set up in the outer vessel by the cooling of the water therein it is
necessary to disconnect the steam tube or to open a valve or cock so as to open a
communication between the interior of the outer vessel and the outer air.
These arrangements are inconvenient in use and are not applicable to large
coffee pots for use in Coffee Taverns and other public places.
According to my present invention I also use the inner and the outer vessel and the
steam tube above described but I convert the latter into a syphon by lengthening the
outer part thereof and continuing it below the level of the inner leg. At the lower
end of the outer leg of the syphon I place a tap or valve and on the junction of the
said leg with the outer vessel I place a cock or valve with multiple channels so
arranged that when in one position and the tap on the bottom of the outer leg of
the syphon is closed, steam is caused to pass from the outer vessel through the
syphon into the inner vessel so as to boil the contents thereof then when such
boiling is completed the multiple-wayed-cock or valve is turned so as to shut off
communication between the outer vessel and the syphon and at the same time open
Price B

page_text: a communication between the interior of the outer vessel and the outer air, then
on the cooling of the steam in the outer leg of the syphon a vacuum will be created
therein which will draw the coffee over into the same then when the said outer leg
is full of coffee the tap or valve at the lower end thereof is opened and the contents
drawn off either at once or from time to time as may be required.
I also according to my present Invention form the bottom of the inner vessel of
conical, tapered or other reduced form and connect to the same a pipe which I pass
down through the outer vessel, a plug or tap being employed to open or close the
passage through the said pipe.
By these means I am enabled when required to cleanse the inner vessel and to
run off the contents thereof.

page_text: I EBENEZER BOYES of Albert Road, Peckham in the County of Surrey, Coffee
Dealer do hereby declare the nature of my invention for IMPROVEMENTS IN
COFFEE POTS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The Invention has for its object improvements in that class of coffee pot for
which I obtained provisional protection on the 6th of July 1883 No. 3363. In
such description of coffee pot the coffee is boiled in an inner vessel which is fitted
within an outer vessel and is of such size as to leave a space between the two
vessels to contain water.
The two vessels are securely fitted together so as to make a tight joint at their
junction and a pipe connected to the upper part of the outer vessel is passed into
the inner vessel into which it descends nearly to the bottom thereof.
The coffee pot being placed on the fire the water in the outer vessel is caused to
boil, the steam thence passes by the tube into the inner vessel and boils the contents
thereof, then after the boiling is completed the vessel is removed from the fire and
the contents of the inner vessel are poured out therefrom by tilting the coffee pot
in the manner of emptying an ordinary jug. In order to prevent the contents of
the inner vessel from being drawn into the outer vessel through the steam tube by
any vacuum set up in the outer vessel by the cooling of the water therein it is
necessary to disconnect the steam tube or to open a valve or cock so as to open a
communication between the interior of the outer vessel and the outer air.
These arrangements are inconvenient in use and are not applicable to large coffee
pots for use in coffee taverns and other public places.
According to my present invention I also use the inner and the outer vessel and
the steam tube above described, but I convert the latter into a syphon by
lengthening the outer part thereof and continuing it below the level of the inner
leg. At the lower end of the outer leg of the syphon I place a tap or valve and
on the junction of the said leg with the outer vessel I place a cock or valve with
multiple channels so arranged that when in one position and the tap on the bottom
of the outer leg of the syphon is closed steam is caused to pass from the outer
vessel through the syphon into the inner vessel so as to boil the contents thereof
then when such boiling is completed the multiple wayed cock or valve is turned so
as to shut off communication between the outer vessel and the syphon and at the
same time open a communication between the interior of the outer vessel and the
outer air, then on the cooling of the steam in the outer leg of the syphon a vacuum
will be created therein which will draw the coffee over into the same then when
the said outer leg is full of coffee the tap or valve at the lower end thereof is
opened and the contents drawn off either at once or from time to time as may be
required.
I also according to my present invention form the bottom of the inner vessel of
conical, tapered or other reduced form and connect to the same a pipe which I pass
down through the outer vessel, a plug or tap being employed to open or close the
passage through the said pipe.
By these means I am enabled when required to cleanse the inner vessel and to
run off the contents thereof.
And in order that my said Invention may be more clearly understood and
readily carried into effect I will proceed aided by the accompanying drawings
more fully to describe the same.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation Figure 2 is a vertical section Figure 3 is a plan with
the cover removed and Figure 4 is a section of a slight modification of a coffee pot
constructed with my improvements applied thereto.
a is the inner vessel which is supported in the outer vessel b and hermetically
fixed so as to form a close chamber c between them d is a pipe which communicates
with the close chamber c and when required admits steam therefrom into the water
contained in the vessel a.
So far as above described the coffee pot is of similar construction to that shown
and described in the specification of Letters Patent herein before referred to.
According to my present invention I convert the steam tube d into a syphon by
lengthening the outer part thereof and continuing it below the level of the inner
leg. At the lower end of the outer leg of the syphon I place a tap or valve d¹ and
on the junction d² of the said leg with the outer vessel 6 I place a cock or valve d³
with multiple channels so arranged that when in one position and the tap d on
the bottom of the outer leg of the syphon is closed as shown in Figure 2 steam is
caused to pass from the chamber c through the syphon into the inner vessel a so as
to boil the contents thereof, then when such boiling is completed the multiple
wayed cock or valve d³ is turned so as to shut off communication between the
outer vessel and the syphon and at the same time open a communication between
the interior of the outer vessel b and the outer air, then on the cooling of the
steam in the outer leg of the syphon d a vacuum will be created therein which will
draw the coffee over into the same, then when the said outer leg is full of coffee,
the tap or valve d¹ is opened and the contents drawn off either at once or from
time to time as may be required. 6 is a short tube provided with a screw cover
for supplying the outer chamber b with water when required.
I also according to my invention sometimes form the bottom of the inner vessel a
of conical, tapered or other reduced form as shown at Figure 4 and connect to the
same a pipe a¹ which I pass down through the outer vessel b, a plug a³ or tap a³
being employed to open or close the passage through the said pipe.
By these means I am enabled when required to cleanse the inner vessel a and to
run off the contents thereof.
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
First The employment, in combination with a coffee pot formed with an inner
vessel a, outer vessel b and steam pipe d, of a long outer leg connected to the
pipe d so as to form a syphon thereof and providing such steam tube syphon d
with a multiple-way-cock or valve d³ and cock or valve d¹ substantially as herein
shown and described and for the purpose stated, and
Second: In coffee pots of the character herein described constructing the bottom
of the inner vessel a of conical tapered or other reduced form and providing the
same with a plug a or tap a³ substantially as herein shown and described and for
the purpose stated.
Dated this 30th day of September 1884.
EBENEZER BOYES.
By Harris & Mills,
23, Southampton Buildings,
Agents.