MENTS IN COFFEE POTS
Year: 1883

page_text: 4:
PROVISIONAL SPECIFICATION left by the said Ebenezer Boyes at the
Office of the Commissioners of Patents on the 6th July 1883.
EBENEZER BOYES of Albert Road, Peckham in the County of Surrey IMPROVE
MENTS IN COFFEE POTS
The Invention has for its object improvements in coffee pots.
For this purpose I employ a inetal vessel to contain water into which I sink a
vessel. made preferably of earthenware and of any convenient form so as to leave a
space between them. The upper part of the outer vessel is cemented or otherwise
secured to the inner vessel so as to make a tight joint. From the upper part of
the outer vessel above the level of the water therein I lead a glass or other tube
into the inner vessel.
i
Upon the coffee pot being placed over a fire the water in the outer vessel will
boil and the steam therefrom will be conducted into the inner vessel which also
contains water and cause it also to boil.
The coffee is preferably introduced into the inner vessel when the water therein
is boiling or water may first be placed in the outer vessel only and when boiling
the dry coffee may be introduced into the inner vessel and boiling water poured
thereon.. The boiling of the coffee may be continued as long as may be desired.
By these means I avoid the, use of direct fire heat and I prevent the coffee
coming into contact with a metal vessel while boiling.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Ebenezer Boyes in the Patent Office on the 5th January 1884.
EBENEZER BOYES of Albert Road Peckham in the County of Surrey
MENTS IN COFFEE POTS":
F
11.0
The Invention has for its object improvements in coffee pots.
"IMPROVE-
For this purpose I employ a metal vessel to contain water into which I sink a
vessel made preferably of earthenware and of any convenient form so as to leave a
space between them.
The upper part of the outer vessel is cemented or otherwise secured to the inner
vessel so as to make a tight joint...
い
From the upper part of the outer vessel above the level of the water therein I
lead a glass or other tube into the inner vessel.
Upon the coffee pot being placed over a fire the water in the outer vessel will
boil and the steam therefrom will be conducted into the inner vessel which also
contains water and cause it also to boil.
The coffee is preferably introduced into the inner vessel when the water therein
is boiling, or water may first be placed in the outer vessel only and when boiling
the dry coffee may be introduced into the inner vessel and boiling water poured
thereon.
The boiling of the coffee may be continued as long as may be desired.
By these means I avoid the use of direct fire heat and prevent the coffee coming
into contact with a metál vessel while boiling.
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.
DESCRIPTION OF THE DRAWINGS
Figure 1 is an elevation Figure 2 is a vertical section and Figure 3 is a plan
of a coffee pot constructed according to my invention.
a is a metal vessel to contain water which I pour therein through an aperture a¹
which is opened and closed by a screw cap a² or in other convenient manner.
Within the vessel a I sink a vessel b which is made preferably of earthenware
and of any convenient form so as to leave a space between the two vessels. ›
The upper part of the outer vessel a is cemented or otherwise secured to the
inner vessel b so as to make a tight joint.
From the upper part of the outer vessel above the level of the water therein I
lead a glass or other tube.c into the inner vessel b.
Upon the coffee pot being placed over a fire the water in the outer vessel a will
boil and the steam therefrom will be conducted by the tube c into the inner vessel b
which also contains water and cause it also to boil.
The coffee is preferably introduced into the inner vessel b when the water therein
is boiling; or water may first be placed in the outer vessel only and when boiling
the dry coffee may be introduced into the inner vessel and boiling water poured
thereon.
The boiling of the coffee may be continued, as long as may be desired.
By these means I avoid the use of direct fire heat and prevent the coffee coming
into contact with a metal vessel while boiling.
The outer vessel is supplied with water to about the level indicated in the
drawing at Figure 2 and when the boiling of the coffee is completed the tnbe c is

page_text: disconnected so as to prevent the coffee in the inner vessel from being drawn over
into the outer vessel by any vacuum which may be set up therein by the cooling
of the water in such outer vessel or a tap or valve in such outer vessel may be
employed to open communication with the outer air.
Having thus described the nature of my said Invention and the mode in which
I carry the same into effect I would have it understood that I do not claim the
boiling of liquid in one vessel by steam generated in and conducted thereinto from
another vessel broadly considered but what I do claim is the improved coffee pot
herein described consisting of vessels a b steam tube c and supply aperture a
arranged and combined in relation to each other substantially as herein shewn and
described.
In witness whereof I the said Ebenezer Boyes have hereunto set my hand
and seal this first day of January in the year of our Lord One thousand eight
hundred and eighty four