AN IMPROVED CONSTRUCTION OF APPARATUS FOR OBTAINING EXTRACTS OR INFUSIONS FROM VEGETABLE AND OTHER SUBSTANCES
Year: 1876

page_text: LETTERS PATENT to Henry Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer, for the Inven-
tion of "AN IMPROVED CONSTRUCTION OF APPARATUS FOR OBTAINING
EXTRACTS OR INFUSIONS FROM VEGETABLE AND OTHER SUBSTANCES." A com-
munication from abroad by Louis Malen, of Paris, in the Republic of France.
PROVISIONAL SPECIFICATION left by the said Henry Edward Newton at
the Office of the Commissioners of Patents on the 16th March 1876.
HENRY EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer. "AN IMPROVED CONSTRUCTION OF
APPARATUS FOR OBTAINING EXTRACTS OR INFUSIONS FROM VEGETABLE AND OTHER
SUBSTANCES."
This Invention relates to that class of apparatus for obtaining extracts from
various substances in which a complete circulation of the liquid contained in the
apparatus is obtained, the object of the Invention being to simplify the construction
of such apparatus, so as to render more easy and less costly the repairing of the
apparatus, and to facilitate and ensure the proper cleaning of the same; also to
improve the working of the apparatus, and thus obtain a better quality of extract
or infusion, and also to reduce, (1st,) the time necessary for making a good extract,
and, (2nd,) the cost of the combustible used. To this end the apparatus is con-
structed with three compartments, viz., the lower compartment or boiler, the
central reservoir, and the upper compartment, the boiler and central reservoir being
connected together by a short tube. This tube in a large apparatus is closed by
a plate or stopper, which is pierced to receive two pipes, one of which is intended
to convey the heated water or liquid from the boiler into the upper compartment,
the other to form a connection between the boiler and central reservoir. The
upper compartment contains a filter, upon which is placed the substance from
which the extract or infusion is to be obtained. In the centre of this filter is
soldered or otherwise secured a metal tube or sheath, which is intended as a guide
to receive the pipe from the boiler. On to the top of this tube or sheath is fitted.
a deflector, which is intended to throw the boiling water on to the substance on
the filter.

page_text: Hitherto the filter has been connected to the pipe from the boiler, and this has
been a source of great inconvenience.
One of the principal advantages of the present mode of constructing the
apparatus is that the filter and ascension pipe are independent of one another.
A
When large quantities of the extract or infusion are required the apparatus may
be enclosed in a metallic or other envelope, which may be provided with a fire-
place for burning coal, coke, or wood, or a gas burner may be used. The envelope
will be provided with a chimney to carry off the products of combustion, and also
with a tap to draw off the contents of the apparatus.
In small apparatus the central reservoir may be in the form of a coffee or
tea pot.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Henry Edward Newton in the Great Seal Patent Office on the 16th
September 1876.
HENRY EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer. "AN IMPROVED CONSTRUCTION OF
APPARATUS FOR OBTAINING EXTRACTS OR INFUSIONS FROM VEGETABLE AND OTHER
SUBSTANCES." A communication from abroad by Louis Malen, of Paris, in the
Republic of France.
This Invention relates to that class of apparatus for obtaining extracts from
various substances in which a complete_circulation of the liquid contained in the
apparatus takes place, the object of the Invention being to simplify the construction
of such apparatus so as to render more easy and less costly the repairing of the
apparatus, and to facilitate and ensure the proper cleaning of the same; also to
improve the working of the apparatus, and thus obtain a better quality of extract
or infusion, and also to reduce, firstly, the time necessary for making a good extract,
and, secondly, the cost of the combustible used. To this end the apparatus is con-
structed with three compartments, viz:-1, the lower compartment or boiler;
2, the central reservoir; and 3, the upper compartment, the boiler and central
reservoir being connected together by a short tube. This tube is closed by a plate
or stopper, which is pierced to receive two pipes, one of which is called the
ascension pipe, and is intended to form the road by which the heated water or
liquid as it boils up is conveyed from the boiler into the upper compartment; the
other pipe forms a connection between the lower compartment or boiler and the
central reservoir, by which means a complete circulation of the liquid is obtained.
The upper compartment contains a metal strainer, upon which is placed the sub-
stance from which the extract or infusion is to be obtained. In the centre of this
strainer is soldered or otherwise secured a metal tube or sheath, through which the
ascension pipe from the boiler passes. On to the top of this tube or sheath may
be fitted a deflector, which is intended to throw the boiling water as it issues from
the ascension pipe on to the substance on the strainer.
Hitherto in this class of apparatus the strainer has been connected to the
ascension pipe, which has been a source of great inconvenience, owing to the
difficulty experienced in properly cleaning out the apparatus after use; and one
of the principal advantages of the improved mode of constructing the apparatus is
that the strainer and ascension pipo are independent of one another.
When large quantities of the extract or infusion are required the apparatus may
be enclosed in a metallic or other envelope, and may be provided with a fire-place
for burning coal, coke, or wood, or a gas burner may be used. The envelope will
be provided with a chimney to carry off the products of combustion, and the lower
compartment or boiler of the apparatus will be provided with a tap to draw off
the contents.

page_text: In small apparatus the central reservoir may be in the form of a coffee or tea pot,
and the apparatus may be heated by a spirit lamp or other convenient means.
In the accompanying Drawings Fig. 1 is an elevation of a small apparatus
constructed according to this Invention; and Fig. 2 is a vertical section of the
same.
'
Fig. 3 is an elevation of a larger apparatus enclosed in a metallic or other
envelope, and provided with a fire-place for burning coal or other suitable com-
bustible; and Fig. 4 is a vortical section of the same.
In Figures 1 and 2, A is the lower compartment or boiler; B, the central
reservoir, which is connected to A by the short pipe B; C is the upper com-
partment, which may be made of glass or china, the other parts being made of
metal, earthenware, or other suitable material. The lower part of the compart-
ment C is closed by a strainer D, Fig. 2, to which is secured at its centre, by
soldering or otherwise, a short tube or sheath E,- through which passes the
ascension pipe F. This pipe F is connected at its lower end to a hollow stopper G,
which is inserted into and closes up the pipe B³. A short tube E' connects the
boiler A with the central reservoir B, so that even when the pipe B is closed the
circulation may still be kept up in the apparatus. It will be seen from the
Drawing that by this simple arrangement of the parts the pipe F can be raised or
lowered and the stopper G be inserted in its place or removed therefrom without
the necessity of touching the strainer D, and consequently the complete closing of the
pipe B connecting the two compartments A and B is easily attained and the proper
working of the apparatus ensured. The compartment C will be made to fit firmly
into the central reservoir B, and may be provided with a suitable lid or cover.
The strainer D may be secured in its place in the compartment C in any con-
venient manner, but the plan which it is preferred to employ is as follows:-
A ledge is formed in the inside of the compartment C, on which the strainer D
rests. To the under side of the strainer D is secured a ring H, which projects
downwards to a level with the bottom of the compartment C, and which is
threaded internally to receive the thread of, a second ring I. This ring I is formed
with a flange, which when the ring is screwed up bears against the bottom edge
of the compartment C and draws the strainer D down, thus clipping between them
the bottom of the compartment. It will be understood that it is only necessary to
unscrew the flanged ring I, when the strainer can be removed from the compart-
ment C for cleaning.
In applying the Invention to apparatus intended for making large quantities of
any extract (and in order to save time and fuel) the lower and central compart-
ments A and B of the apparatus are enclosed in an envelope J, which is provided
with a chimney L to carry off the products of combustion. This envelope is
placed over a fire-place K, in which any suitable fuel may be burned. The
envelope J may be constructed of motal or other suitable material, and may if
desired be surrounded with some non-conducting substance to prevent the radiation
of the heat. The lower edge M of the envelope J rests in a groove N formed at
the top of the outer wall of the fire-place K. This groove may be filled with sand
or other suitable material to prevent the passage of the sinoke.
In this arrange-
ment the pipe E2 may be inserted into the stopper G, and the strainer D may be
made with a lip, which will rest on the top of the central reservoir B. The com-
partment C may be hinged or otherwise secured to the reservoir B, and may be
provided with a suitable lid or cover.
If it be desired to use gas instead of solid fuel then the chimney L may be
dispensed with, and some holes pierced in the envelope at O will suffice to allow of
the escape of the hot air produced by the combustion of the gas.
It will be understood that this envelope may be applied to other kinds of
apparatus used for a similar purpose, no matter of what form or dimensions they
may be, the end in view being the reduction of the time necessary to the prepara-
tion of the extract and economy in the cost of the fuel employed.
Having now set forth the nature of this Invention for an improved construction

page_text: of apparatus for obtaining extracts or infusions from vegetable and other substances,
and having explained the manner of carrying the same into effect, as communi-
cated to me by my foreign correspondent, I wish it to be understood that under
the above in part recited Letters Patent I claim,-
Forming the ascension pipe F separate from the strainer D, so that the several
parts of the apparatus may be taken to pieces, as and for the purposes herein set
forth.
I also claim the mode shewn and described in reference to Fig. 2 of constructing
the compartment C and adapting it to the other parts of the apparatus.
I further claim the arrangement and construction of parts shewn and described
in reference to Figures 3 and 4, in which the boiler and reservoir are enclosed
within a double casing or envelope and mounted above a fire-place, so that an
extract or infusion of coffee may be prepared on a large scale, as herein set forth.
In witness whereof, I, the said Henry Edward Newton, have hereunto set my
hand and seal, this Sixteenth day of September, in the year of our Lord
One thousand eight hundred and seventy-six.
H. E. NEWTON. (L.S.)