An Improved Infusing Apparatus, Chiefly Designed for use in Obtaining Infusions of Coffee or Tea.
Year: 1889

page_text: Date of Application, 22nd Aug., 1889
Complete Specification Left, 28th Dec., 1889-Accepted, 8th Feb., 1890
PROVISIONAL SPECIFICATION.
An Improved Infusing Apparatus, Chiefly Designed for use in
Obtaining Infusions of Coffee or Tea.
I, ERNEST RINGAUD, of 33, Rue de la Grange aux Belles, Paris, in the Republic
of France, Manufacturer, do hereby declare the nature of this invention to be as
follows:
This invention relates to an infusing apparatus chiefly designed for use in
obtaining infusions of coffee or tea, which is characterized by the arrangement and
combination of a boiler and a receptacle placed above the latter and set in communi-
cation therewith by a siphon.
In order to render the said invention better understood I will proceed to describe
the same with reference to the accompanying drawing in which an apparatus
constructed according to my said invention is represented by way of example.
Figure 1 is a vertical section taken through the axis of the improved apparatus.
Figure 2 represents a modification in the mounting of the siphon.
Figure 3 shows an elevation and plan of the boiler.
As shown in the drawing, the boiler is provided with a valve a (Figure 1)
preferably formed of a simple screw having a handle and pierced with a hole b in the
longitudinal direction. A small channel c in the screw is designed to set the interior
in communication with the outer atmosphere. The said valve has upon its collar a
packing piece or washer d of india-rubber or other equivalent material designed to
make a tight joint. It is attached to the boiler by a small chain and a collar so as to
provide for freedom of action.
In the arrangement of the siphon represented in Figure 2 I have shown the
connection of the siphon h with the cover i. This connection is established in a
recess j in the cover, an hermetic joint being made to prevent the loss of any
aroma.
The siphon pipe f traverses the cover of the boiler k through a cone provided with
a very tight packing which can be easily replaced.
The operation of the improved apparatus is based upon a very simple application
of the action of the atmospheric pressure. When the boiler is heated the water
contained therein is caused to rise into the glass receptacle above, producing a
vacuum in the boiler. On discontinuing to heat the boiler, the atmospheric pressure
will act energetically upon the surface of the liquid in the said receptacle, causing it
to descend again. But if at the same time the valve a is opened air will be
introduced into the said boiler so that the equilibrium of the pressure will be
re-established and the liquid cease to descend. An infusion of coffee or of tea is thus
obtained in a perfect manner. At the desired moment, the operation is terminated
by causing the infusion of coffee or tea to descend. For this purpose, it is sufficient
to close the above-mentioned valve and to heat the boiler for a few seconds. The small
quantity of water which always remains in the boiler by reason of the arrangement of
the siphon pipe, is vaporized and carries the air with it. A vacuum is re-established
and the liquid is forced out, leaving the dross or residue of coffee or tea dry, the
whole aromatic principle of the same having been expressed.
One of the principal advantages of my improved apparatus consists in the arrange-
ment which enables infusions of coffee, tea or the like, to be obtained without heating
anything else but the water.
From the foregoing description it will be perceived that the metallic boiler
contains the pure water and that the infusions are obtained in the glass receptacle.

page_text: As regards the excellence of the infusions this arrangement obviates the incon-
veniences of most of the apparatus heretofore employed, wherein the infusions of the
coffee, tea or the like, are effected in contact with a hot metal which leaves a
perceptible bitter taste.
1
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Infusing Apparatus, Chiefly Designed for use in
Obtaining Infusions of Coffee or Tea.
I, ERNEST RINGAUD, of 33 Rue de la Grange aux Belles, Paris, in the Republic
of France, Manufacturer, 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 :-
This invention relates to an infusing apparatus chiefly designed for use in obtaining
infusions of coffee or tea, which is characterized by the arrangement and combination
of a boiler and a receptacle placed above the latter and set in communication there-
with by a siphon.
In order to render the said invention better understood I will describe the same
with reference to the accompanying drawing which represents by way of example an
apparatus constructed according to my said invention.
Fig. 1 is a vertical section taken through the axis of the improved apparatus.
Fig. 2 represents a modification in the mounting of the siphon.
Fig. 3 shows an elevation of the boiler.
As shown in the drawing the boiler a is provided with a valve (Fig. 1) preferably
formed of a simple screw having a handle and pierced with a hole c in the longitu-
dinal direction. A small channel d in the screw is designed to set the interior of the
boiler in communication with the outer atmosphere. The said valve has upon its
collar a packing piece or washer e of indiarubber or other equivalent material
designed to make a tight joint. It is attached to the boiler by a small chain and a
collar so as to provide for freedom of action, but it may be provided upon the siphon
pipe or in any other suitable manner.
In the arrangement of the siphon represented in Fig. 2 I have shown the con-
nection of the siphon 9 with the cover h. This connection is established in a
recess in the cover, an hermetic joint being made to prevent the loss of any
aroma.
The siphon pipe 9 traverses the cover of the boiler a through a conej provided
with a very tight packing k which can be easily replaced.
The operation of the improved apparatus is based upon a very simple application
of the action of the atmospheric pressure. When the boiler a is heated the water
contained therein is caused to rise into the receptacle above, producing a vacuum
in the boiler. On discontinuing the heating of the boiler the atmospheric pressure
will act energetically upon the surface of the liquid in the said receptacle causing it
to descend again. But if at the same time the valve bis opened air will be
introduced into the said boiler so that the equilibrium of the pressure will be re-
established and the liquid cease to descend. An infusion of coffee or of tea is thus
obtained in a perfect manner. At the desired moment the operation is terminated
by causing the infusion of coffee or tea to descend. For this purpose it is sufficient
to close the above-mentioned valve and to heat the boiler for a few seconds. The
small quantity of water which always remains in the boiler, by reason of the arrange-
ment of the siphon pipe, is vaporized and carries the air with it. A vacuum is
re-established and the liquid is forced out, leaving the dross or residue of coffee or
tea dry, the whole aromatic principle of the same having been expressed.

page_text: One of the principle advantages of my improved apparatus consists in the arrange-
ment which enables the infusions of coffee, tea or the like to be obtained without
heating anything else but the water.
From the foregoing description it will be perceived that the metallic boiler contains
the pure water and that the infusions are obtained in the glass receptacle. As
regards the excellence of the infusions this arrangement obviates the inconveniences
of most of the apparatus heretofore employed wherein the infusions of the coffee,
tea or the like are effected in contact with a hot metal, which leaves a bitter
taste.
For emptying the boiler I have arranged a cock m near the bottom, and it is also
provided with a handle placed on the side.
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
In an apparatus for preparing infusions of coffee, tea or the like composed of a
water-boiler a in communication with an upper receptacle / for the said coffee, tea or
the like through the medium of a siphon g, the arrangement of a valve formed of a
screw having a handle and a channel de enabling the entrance of air into the
boiler, this valve having for its object to prevent the liquid saturated with coffee or
tea from re-descending into the boiler, during the time of the infusion, after it has
been caused to rise into the upper receptacle under the action of heat through the
siphon g.
Dated this 27th day of December 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.