IMPROVEMENTS IN THE APPLICATION AND APPARATUS FOR SUPPLYING GAS TO THE ROASTING OF COFFEE
Year: 1879

page_text: LETTERS PATENT to Henry Faulder, of Stockport, in the County of Lancaster,
Fruit Preserver, for the Invention of "IMPROVEMENTS IN THE APPLICATION
AND APPARATUS FOR SUPPLYING GAS TO THE ROASTING OF COFFEE."
Sealed the 18th November, 1879, and dated the 2nd September 1879.
PROVISIONAL SPECIFICATION left by the said Henry Faulder at the Office
of the Commissioners of Patents on the 2nd September 1879.
Henry Faulder, of Stockport, in the County of Lancaster, Fruit Preserver.
"IMPROVEMENTS IN THE APPLICATION AND APPARATUS FOR SUPPLYING GAS TO THE
ROASTING OF COFFEE." it
My Invention relates to improved means for supplying gas to the roasting of
coffee, chicory, and cocoa, previous to their being prepared for use as a beverage, as
is well understood. To this end I apply heat to the ordinary revolving iron
cylinder containing the matters being roasted by means of a burner supplied with
a mixture of gas and air; I prefer to supply the aforesaid mixture to the burner
by means of a blast of air drawn or forced through a pipe or conduit fitted with a
nozzle, which enters a chamber into which gas is admitted under a less pressure
than that of the air. The force of the air-blast preferably exceeds the pressure of
the gas supply, I may employ a "Roots" or other form of blower, or may use a
fan or bellows to force air through the air pipe. The air and gas comingle on
coming into contact and are carried forward by the force of the blast into a second
chamber or burner formed of a rectangular. or other suitable shape, and having
formed on its side which is opposed to the said revolving cylinder a series of
jets, which cause the flame to impinge on the surface of the said revolving
cylinder, which may at the time be exposed to the flaine from end to end of its
length. The heat produced is in a highly combustible state, caused by the blast of
air and acting on the revolving cylinder in the herein before mentioned manner, has
a beneficial effect on the matters being roasted. Also the coffee, chicory, or other
matter is better roasted, and a larger per cent. of coffee is retained. By the
employment of this blast burner to the roasting of coffee and other matters, as
herein indicated, a greater economy in the consumption of gas is obtained.
¡

page_text: +
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SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Faulder in the Great Seal Patent Office on the 28th
February 1880.
"s
HENRY, FAULDER, of Stockport, in the County of Lancaster, Fruit Preserver.
IMPROVEMENTS IN THE APPLICATION AND APPARATUS FOR SUPPLYING GAS TO THE
ROASTING OF COFFEE:"
My Invention relates to improvements in the roasting of coffee. Previous to
my said Invention coffee berries have ordinarily. been roasted by means of a coke
fire previous to their preparation for use as a beverage, as is well understood.
According to my Invention I employ and make use of a mixture of gas and air in
lieu of coke or other similar substance used as fuel to generate heat to effect the
said roasting. When carrying out the Invention I am enabled by the hereinafter
mentioned means to apply a comparatively great degree of heat to the ordinary
roasting cylinder or other similar apparatus used for the herein before mentioned
purpose. To this end I fix and arrange a suitable burner fitted or formed with
gas jets and placed horizontally along the entire length of the roasting cylinder.
The said burner is supplied with gas and air under pressure by means of a blast of
air drawn or forced through a suitable pipe. The gas is supplied from a pipe, and
preferably at a less pressure than the air pressure through the said air inlet pipe.
To generate and maintain the required blast of air through the air pipe, I employ
a Roots'-blower, but any other suitable blower, fan, or bellows may be employed for
this purpose if desired. The air and gas are mixed in the chamber of the burner,
and carried forward to the gas jets by means of the air blast drawn or forced
through the pipe, and will heat on ignition the said roasting cylinder from end to
end thereof. I may supply the gas pipe with a regulating valve in order to
regulate the supply of gas.
And in order that my Invention may be the better understood I have caused to
be appended hereunto a Sheet of Drawings drawn to a scale of about one and a
half inches to the foot and marked with letters of reference.
Referring in this place to the said Drawings, Figure 1 represents an end view of
a roasting cylinder, and shows the manner of fixing the burner thereto. Figure 2,
à front view of the same, and shows more clearly the arrangement of connecting
the air and gas pipes C and B to the chamber or injector D; Figure 3, an
enlarged view of the chamber and burner; Figure 4, a vertical cross section of Figure 3
taken on the line of the latter Figure. The size and proportions of the various
parts are only given by way of example. The burner A which may be formed of
cast-iron or other suitable metal is provided with perforations or jet holes a,
which may extend along its entire length. I prefer to place or 'fix the said burner
at the distance of one inch or thereabouts from the roasting cylinder b, but the
said burner may be fixed at a longer or shorter distance if desired, the object being
to impart a suitable degree of heat to the cylinder b. The chamber or injector D
is formed with two orifices or openings to which the air and gas pipes B, C, are
connected. The gas-supply pipe is provided with a regulating valve d to control
and regulate the admission of gas to the burner. The said chamber or injector D
is formed with a dished bottom so as to allow of the gas and air mixing freely and
in sufficient volume.. An opening e to admit atmospheric air to the chamber is
formed on the injector D, and is provided with a sliding and adjustable plate ƒ in
order to regulate the induced draft of air through the said opening e when the
apparatus is in operation. I have not thought it necessary. to illustrate the blower
employed, as any suitable, form of blower may be used to force air through the said
pipe B, and if preferred a fan or bellows may be employed for the indicated purpose
in lieu of a blower, but I have found in practice that a blower, as, for example, a
Roots' blower, to be suitable.

page_text: Having now described the nature and intent of my Invention and indicated
means for carrying the same into practical effect, I would have it to be distinctly
understood that I claim as secured to me by the herein before mentioned Letters
Patent.
.
First. Supplying a mixture of gas and air and under pressure to urge or increase
the combustion of the gas-flame by means of a blast of air drawn or forced through
a pipe or passage by means of a blower, fan, or similar appliance.
And, Secondly. The employment of a gas and air burner to the roasting of
coffee, substantially in the manner herein set forth and illustrated by the
accompanying Drawings.
In witness whereof, I, the said Henry Faulder, have bereunto set my hand
and seal, this Sixteenth day of November, in the year of our Lord One
thousand eight hundred and seventy nine.
HENRY FAULDER. (L.S.)
Signed and sealed by the
said Henry Faulder
in the presence of
HUGH GEARING GRANT,
Agent to the Patentee,
24, Bull's Head Exchange Chambers,
Market Place,
Manchester.