AN IMPROVED APPARATUS HAS MAZING CORRER A AWD OTHER REVERAGES.
Year: 1871

page_text: LETTERS PATENT to Emile Bocquet, of Paris, in the Republic of
France, Gentleman, for the Invention of "AN IMPROVED APPARATUS
HAS
MAZING CORRER A
AWD OTHER REVERAGES.
"
Sealed the 28th June 1872, and dated the 30th December 1871.
PROVISIONAL SPECIFICATION left by the said Emile Bocquet at the
Office of the Commissioners of Patents, with his Petition, on the
30th December 1871.
I, EMILE BOCQUET, of Paris, in the Republic of France, Gentleman,
5 do hereby declare the nature of the said Invention for "AN IMPROVED
APPARATUS FOR MAKING COFFEE, TEA, AND OTHER BEVERAGES," to be as
follows, that is to say :-
This Invention consists in an improved apparatus for making coffee,
tea, and other similar beverages.
This apparatus consists of a coffee pot entirely enclosed in a vessel full
of water, which is heated in any suitable manner. This coffee pot is in
two separate parts or is divided into two compartments; the upper part

page_text: or compartment is closed at the top by a cover, and the bottom is
perforated with a number of holes. On this perforated bottom is placed
the coffee (in powder) or other similar substance. Communication
between the upper part of the coffee pot and the hot water in the vessel
is effected by means of a conduct pipe wider at the bottom than at the
top, and opening below through the bottom of the coffee pot into the
water of the hot bath; the upper end of this conduct pipe extends a
certain distance above the powdered coffee.
To make use of this apparatus the coffee is placed in the upper part,
and the water being heated rises by degrees in the central conduct pipe,
turns over on to the powdered coffee, through which it passes, and then
falls to the bottom of the coffee pot. After a time this ascending motion
of the water stops, although the water of the hot bath be kept at
ebullition. The coffee is then made and strained. It will keep hot until
the cover of the outer vessel is raised and the coffee pot is removed
therefrom to pour out the coffee into cups.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Emile Bocquet in the Great Seal Patent Office on
the 29th June 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EMILE
BOCQUET, of Paris, in the Republic of France, Gentleman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of December, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Emile Bocquet, Her special
licence that I, the said Emile Bocquet, my executors, administrators,
and assigns, or such others as I, the said Emile Bocquet, my executors,
administrators, and assigns, should at any time agree with, and no a
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
APPARATUS FOR MAKING COFFEE, TEA, AND OTHER BEVERAGES," upon the 3

page_text: condition (amongst others) that I, the said Emile Bocquet, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Emile Bocquet, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawing hereto annexed
and to the figures and letters marked thereon, that is to say :-
This Invention consists in an improved apparatus for making coffee,
tea, and other infusions.
Of all the coffee pots now in use not any combines the conditions
indispensable for making a perfectly good infusion. In some the water
passes too rapidly through the coffee to dissolve properly its active
properties; in others the liquor passes continuously on the substance
under infusion, and is deprived entirely of its aroma, and is rendered
more and more acrid according to the length of time during which this
passage is continued, besides which the quality of the coffee is
impaired therein by an uninterrupted ebullition.
The ordinary filter coffee pot is the best of all those known, but to
obtain a good result much care and patience are required, and this
explains how it happens that even when employing the same quantity
and the same quality of coffee, the results obtained are very variable.
According to the opinion of epicures to prepare coffee properly, that is
to say, to retain in the liquor all the active principles of that substance,
it is necessary, firstly, to prepare it in an apparatus not liable to be
affected by acids or salts; secondly, to make it with tepid water poured
in small quantities gently on to the ground coffee; thirdly, to place it
finally in a hot water bath in order to draw out all its good qualities, and
raise it to the degree of heat required for its being taken. These
conditions are combined in my improved coffee pot, which is self-acting,
requires no particular care, and preserves all the aroma of the coffee,
which is kept hot by the water bath. It may be made of pottery ware,
metal, or other non-corrodible material of various forms of an ornamental

page_text: character, which allow of its use at table heated by a spirit lamp. As
it never exceeds the temperature of boiling water and operates in the
open air, it is not liable to explode. It consists of a filter, a recipient
and a hot-water bath. The filter and the recipient compose the coffee
pot, properly so called. In the filter is placed the powdered substance
and the infusion is collected in the recipient. These two parts are
joined together and put in communication with the water bath by means
of an ascentional water level tube which forms part with the recipient.
This tube has mainly for object the equal and regular division of the
water on the substance under infusion.
This new ascentional level tube is also applicable to other purposes.
It may be placed in the interior or exterior of the apparatus.
To make my Invention better understood I will proceed to describe
the same by reference to the accompanying Drawing, in which
Figure 1 is a section through the axis of the apparatus, and Figure 2 an
elevation.
It com-
A, A, A, A, is a vessel serving as a hot-water bath in which the coffee
pot, properly so called B, B, B, B, is placed; C, is the lid of the
apparatus; D, the handle; E, the spout. In the interior of the coffee pot
and soldered to its lower part is the ascentional tube F, F, which runs
from the bottom to nearly the top. This tube is closed at its upper
part and is perforated laterally with a series of small holes a.
municates at its lower part from its interior to its exterior by means of a
hole b. The space between the tube and the side of the coffee pot is
what I call the recipient. A filtering case G, G, G, is fitted on the 2
tube F, F, and rests on a shoulder, and in this box the coffee is
placed.
I
To make coffee with this apparatus I proceed as follows:-The ground
coffee having been placed as herein-before described in the filter G, I
place the coffee pot in the bath and pour water therein till it reaches the 3
level N, N. The water enters the tube and rises to the level N, N.
then heat the bath from about sixty-five degrees to seventy degrees
centigrade, and when that temperature is attained it rises to the upper
part of the tube F, runs over in the form of rain through the small holes
a, on to the ground coffee in the filter, passes through the mass, and then 3
falls into the interior of the coffee pot. This circulation continues so
long as the recipient of the coffee pot is not full, and the water in the

page_text: bath has not risen to the minimum level M, M. The coffee is then
made and ready to be served.
In this operation the water never reaches boiling point; it gently
spreads and in small quantities over the substance to be infused, only
passes once over it, and the liquid accumulating in the recipient is
maintained at the required temperature by the water in the bath. Thus
this improved apparatus embraces all the conditions necessary for
making excellent coffee or other desired infusion.
The form I have adopted is not exclusive and may be varied at
discretion; what I claim is,-
Firstly. The peculiar arrangement or construction of self-acting coffee
pot, by which the coffee or other infusion may be kept at a temperature
approaching ebullition, as herein-before described and represented in the
accompanying Drawing.
Secondly. The peculiar construction of ascentional fluid level tube as
herein-before described.
In witness whereof, I, the said Emile Bocquet, have hereto set my
hand and seal, this Twenty-sixth day of June, in the year of our
Lord One thousand eight hundred and seventy-two.