Improvements in Apparatus for Making Coffee, Boiling Water, and Warming Fluid and Farinaceous Foods.
Year: 1899

page_text: Date of Application, 20th Apr., 1899
Complete Specification Left, 18th Jan., 1900—Accepted, 14th Apr., 1900
PROVUAAL DI BOLTIVATIONA
Improvements in Apparatus for Making Coffee, Boiling Water,
and Warming Fluid and Farinaceous Foods.
I, EDWARD DRUCE, of the Express Dairy Company, Limited, of 40, New
Oxford Street, in the County of London, Manager, do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to provide an improved construction of
apparatus for use by purveyors of refreshments for making coffee, heating
milk, boiling water, and warming fluid or farinaceous foods of various kinds,
whereby the customer is protected against the inefficiency or carelessness on
the part of attendants.
The importance of using boiling water for making coffee or tea is well under-
stood, but the great difficulty is to know when the water is boiling, and many
differences of opinion exist on the point.
Now, according to the present invention, it is impossible to make the coffee,
or obtain the water for making the tea, unless the water is actually boiling.
In carrying out this invention, I provide what is known as a fret stand, to
which I secure a vessel to contain water, and called the body.
This vessel or body I divide up into compartments, by vertical partitions,
and in the top of each compartment I provide openings to receive earthenware
jars or vessels, which are fitted steam-tight in the openings.
In the top of each compartment, I also provide a filling hole, which is closed
by a hinged weighted cover, the weight of which is sufficient to resist a certain
low pressure of steam in the compartment.
The earthenware vessels are fitted with draw-off taps, which pass through
the sides of the body.
One compartment at least will be used for making coffee, and another for
boiling water, this latter compartment being provided with an earthenware
jar or vessel for, say, heating milk. Recesses are formed in the top of this
compartment, to receive vessels or jugs for containing other fluid or farinaceous
foods to be warmed.
To the coffee jar, near the top, I fit a pipe, which extends downward into and
nearly to the bottom of the compartment. and to the water compartment I fit
a tap near its upper part, having a stem or pipe extending downwards into the
compartment.
Each compartment may also be provided with a gauge glass and scale
graduated to any number of cups, or other measure, according to the capacity
of the compartment.
In the fret stand, one or more gas burners or other heating devices are
placed.
The ground coffee, in a bag, is placed in the coffee jar; the compartment is
filled with the required amount of water, and the gas is lighted. When the
water has been boiling for a sufficient time, and the pressure of steam is suffi-

page_text: cient, the boiling water will be forced up the pipe into the jar, on the top of the
coffee, and the infusion will thus be produced.
In like manner, the water compartment is filled with water, and the gas
being lighted, the water comes to the boiling point, but no water can be
obtained until the pressure of steam is sufficient to force the water out of
the tap.
As soon as, it is found that the water is boiling, the gas may be turned down,
it being only necessary to keep the water up to boiling point, any undue in-
crease in the pressure of the steam serving to raise the weighted cover to the
filling hole, which thus constitutes a safety valve.
In this way there will be no doubt as to the water being "boiling," because
the apparatus will not act until it does boil.
Dated this 20th day of April 1899.
AEWTON & SUN,
Agents for the Applicant.
Improvements in Apparatus for Making Coffee, Boiling Water,
and Warming Fluid and Farinaceous Foods.
I, EDWARD DRUCE, of the Express Dairy Company, Limited, of 40, New
Oxford Street, in the County of London, Manager, 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:--
The object of this invention is to provide an improved construction of
apparatus for use by purveyors of refreshments for making coffee, heating
milk, boiling water, and warming fluid or farinaceous foods of various kinds,
whereby the customer is protected against the inefficiency or carelessness on
the part of attendants.
The importance of using boiling water for making coffee or tea is well under-
stood, but the great difficulty is to know when the water is boiling, and many
differences of opinion exist on the point.
Now, according to the present invention, it is impossible to make the coffee,
or obtain the water for making the tea. unless the water is actually boiling.
In the acompanying drawing,
Fig. 1 is a front elevation of the apparatus, with parts in section; and
Fig. 2 is a cross section.
Fig. 3 is a sectional view of a weighted cover for a filling hole.
A is what is known as a fret stand, to which I secure a casing B. Inside
this casing I fit a vessel (' to contain water, and called the body. The casing B
may, however, be dispensed with, if desired, the body being secured direct to
the fret stand.
This vessel or body CI divide up into compartments 1, 2, 3 by suitable
partitions, and in the top of each compartment I provide openings to receive
earthenware jars or vessels D, which are fitted steam-tight in the openings.
In the top of each compartment I also provide a filling hole, which is closed
by a hinged weighted cover E. the weight of which is sufficient to resist a
certain (low) pressure of steam in the compartment.
The earthenware vessels D) are each fitted with a draw-off tap 1, the pipes F¹
of which pass through the sides of the body and the casing B. When there
are three compartments in the apparatus, compartments 1 and will be used for
making coffee, and compartment 2 for boiling water. The earthenware jar or

page_text: Vessel in his fatter compartment will be used for heating milk, and is pre-
ferably surrounded by a jacket D', to prevent overheating of the milk.
This jacket is provided with a filling hole, so that on occasion it may be
filled with water, to heat up the contents of the jar D quickly, a draw-off tap
being provided to draw off the heating water when the milk is sufficiently hot
to avoid the overheating above mentioned. Recesses G are formed in the top
of this compartment 2. to receive vessels or jugs H, for containing other fluid
or farinaceous foods to be warmed, or kept warm.
To each of the coffee jars D in compartments 1 and 3, and near the top of
the same, I fit a pipe J, which extends downwards through the top of each
compartment 1 and 3, nearly to the bottom of the compartment, the discharge
end of the pipe J being bent over the side of the jar 1, so that the outlet will
deliver into the jar, and onto the ground coffee or other material from which
the infusion is to be made.
To the water compartment 2 I fit a tap K near its upper part, having a stem
or pipe K extending downwards any distance into the compartment 2.
Each compartment 1, 2, 3 may also be provided with a gauge glass L, and
1 and 3 with a scale L¹, graduated to any number of cups or other measures,
according to the capacity of the jars J.
Thus, suppose the jar is designed to contain six cups of coffee at one time,
the scale will be marked from zero to six, the mark zero coinciding with the
lower end of the pipe J (see compartment 3). The compartments will be filled
with water until the water level coincides with mark 6.
Of course the distance between the marks on the scale will be calculated
according to the area of the water space in the compartment, and the number of
marks, according to the capacity of the jars D.
In the fret-stand, one or more gas burners M or other heating devices are
placed.
N is a bag of suitable material, which is suitably supported in the mouth
of the jars D, in compartments 1 and 3, and into which the ground coffee
is placed.
The compartment 1 or 3 being filled with the required amount of water,
the gas is lighted. When the water in compartment 1 or 3 has boiled for a
sufficient time, and the pressure of steam is sufficient, the boiling water will
be forced up the pipe Jinto the jar D, and falling onto the top of the coffee
in the bag N, will produce the infusion, which will drain through the bag N
into the jar D.
The level of the water, as shown in compartment 1, indicates that enough
water has passed from the compartment into the jar D to make three cups of
coffee. When the level of the water reaches zero, the gas is turned out.
In like manner, the water compartment 2 is filled with water, and the gas
being lighted, the water comes to the boiling point, but no water can be
obtained from the compartment until the pressure of steam therein is sufficient
to force the water up the pipe K', and out of the tap K.
As soon as it is found that the requisite pressure is obtained to force out the
boiling water, the gas may be turned down, it being only necessary to keep
the water up to boiling point. Any undue increase in the pressure of the
steam in any of the compartments will raise the weighted cover E to the filling
hole of each, which thus constitutes a safety valve.
In this way, there will be no doubt as to the water being "boiling." before
making the infusions, whether of coffee or tea, because the apparatus will not
act until the water does boil. As soon as the coffee is made, the gas burners of
compartments 1 and 3 will be turned out, leaving that of compartment 2
alight. The boiling water in 2, in combination with the burner still alight,
will serve to keep the water remaining in 1 and 3 quite hot, which, with the
radiation from the heated walls of compartment 2. will keep the contents of
jars 1 hot for use,

page_text: A certain amount of water will always be left in the compartments 1, 2, and 3,
so that the risk of burning the metal of the body C will, with a very small
amount of attention, be reduced to a minimum.
It will of course be obvious that the supply of water to the compartments
may be automatic, and that any undue pressure of steam may be utilized in
any convenient manner to turn on the water supply for refilling.
Also, that a draw-off cock to each compartment may be provided, if desired.
The size of the apparatus may be varied, and the number of compartments
reduced or increased according to requirements, and the various details of con-
struction may be changed according to the taste of the manufacturer.
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: -
An apparatus for making coffee, boiling water, and warming fluid and
farinaceous foods, constructed and arranged as herein shown and described.
Dated this 18th day of January 1900
NEWTON & SON.
Agents for the Applicant.