Improvements in or connected with Boilers or Heating Apparatus Applicable for Obtaining and Maintaining in a Heated Condition Infusions of Coffee or the like.
Year: 1899

page_text: Date of Application, 25th Jan., 1899
Complete Specification Left, 25th Oct., 1899-Accepted, 25th Nov., 1899
PROVISIONAL SPECIFICATION.
Improvements in or connected with Boilers or Heating Apparatus
Applicable for Obtaining and Maintaining in a Heated Condition
Infusions of Coffee or the like.
I, EBENEZER BOYES, of Albert Road, Peckham, in the County of Surrey,
Wholesale Coffee Dealer, do hereby declare the nature of this invention to be as
follows:-
The invention relates to improvements in or connected with boilers or heating
apparatus applicable for obtaining and maintaining in a heated condition in-
fusions of coffee or the like and the primary object of the invention is to obtain a
simple inexpensive and convenient device adapted to stand upon a refreshment
bar or in other place and by the aid of which the coffee may be infused in
several separate vessels and in said vessels maintained at the required temperature
for use.
In carrying the invention into effect a vertical boiler is employed consisting
of an outer cylindrical shell or case within which is arranged an annular water
chamber formed with a central well consisting of a conical tube closed at the
bottom and extending down to and slightly through an axial aperture in the
bottom plate of the boiler.
The bottom plate of the boiler is located some distance above the bottom of
the outer shell or case and does not extend in a horizontal line to the shell or
case but at its periphery is bent downward at an angle to meet the lower edge
of the case or shell to which it is soldered or brazed thus forming a recess or heating
chamber at the bottom of the boiler surrounded by an annular water space
which protects the shell or case from the action of the heating means employed.
The top plate of the boiler at its centre is formed with an aperture coincident
with the conical tube or well and is united therewith by a soldered or other
joint and at its periphery said top plate is carried by the case or shell but suit-
able apertures are provided around said top plate for the escape of steam from the
water chamber whilst the top plate of the boiler is formed dish shaped in order
that the water of condensation may drain into the well.
The shell or casing at the top is covered by a plate united therewith in a
steam tight manner and in suitable positions it is provided with several apertures
surrounded by recessed seats adapted to receive the bottoms of the jugs or other
vessels containing the infusion of coffee or the like and in order to prevent the
undue escape of steam at those points the seats may be furnished with suitable
packing whilst covers are provided to close any of the apertures which are not
for the time being in use.
1
The space between the top plate of the boiler and the top of the shell or case
virtually constitutes a steam heating chamber and the bottoms of the vessels are
directly exposed to said heat.
A funnel shaped filling tube extending through the case and boiler and closed

page_text: by a conical plug is provided through which the boiler may be charged with
water whilst the necessary small quantity of water to charge the well may be
poured through one of the seated apertures for the vessels onto the dished top
plate of the boiler whence it will naturally drain into the well.
In order to indicate the level of the water in the boiler and well floats are
provided. furnished with rods or spindles which extend upward to the outside
of the apparatus through apertures formed in suitable positions whilst a draw
off tap is provided at the side of the boiler to supply the water necessary for
infusing the coffee but this tap is located at a short distance from the bottom
of the boiler so as to prevent the possibility of the boiler being completely
emptied whilst at work.
Any suitable means may be employed to heat the water in the boiler but the
peculiar construction of Bunsen burner hereinafter described and which forms
part of the present invention is the preferred device.
When first starting the apparatus and at other times it is necessary to rapidly.
heat the water in the boiler and for that purpose a powerful burner located
beneath the boiler is necessary whilst when that is accomplished the large burner
may be dispensed with and a comparatively small jet beneath the well will suffice
to generate sufficient steam to heat the coffee vessels and to keep up the tem-
perature of the water in the boiler.
For this purpose the body or case of the burner is formed cylindrical and open
at the bottom and at its upper part it is provided with an annular enlargement
into which is fitted an inverted cone at its upper part of slightly smaller diameter
than the enlargement and provided around its exterior with several radially
disposed lugs or distance pieces which take a bearing upon the floor of the annular
enlargement and by coming against the wall of said enlargement act as distance
pieces to centralise the cone and leave an annular gas passage around the same.
.At the lower part of the cylindrical case and at one side thereof is provided
a gas jet carried by a bridge or bar extending across the bottom of the cylindrical
case which is supplied from the service pipe and controlled by a tap or valve and
the gas in its passage through the cylindrical case mixes with the air in the
required manner and issues around the cone by which it is spread and forms
a powerful flame beneath the boiler which is mounted upon suitable feet or sup-
ports and this device constitutes the large burner.
Passing axially through the cone and made tight therewith is a tube the upper
end of which constitutes a burner and which at its lower end which is open is
supported upon an upper bar or bridge located at a short distance from the
bottom of the cylindrical case and in axial alignment with and immediately
beneath or more or less entering into said tube is provided a gas jet which is
also carried by the lower bridge and is by a branch separately controlled by a
tap or valve and also connected with the service pipe supplied with gas and this
device constitutes the small burner beneath the well.
The casing and the cone are preferably formed of cast iron and thus a simple
and inexpensive burner is obtained.
The operation of the apparatus will be gathered from the foregoing descrip-
tion, but in recapitulation it may be shortly stated that the boiler and well are
charged with water to a suitable level as shown by the floats or indicators and
the gas supply to the large burner is turned on and ignited at the cone and when
the water in the boiler is sufficiently heated the large burner is dispensed with
and the small one brought into requisition.
The steam issuing from the boiler around the top plate and from the well
passes into the steam chamber and there acts directly upon the bottoms of the
jugs or other vessels whilst the water of condensation from the steam by reason
of the dished form of the top plate of the boiler drains back into the well.
It will be obvious that the apparatus hereinbefore described may also be usefully
employed for heating or maintaining in a heated condition milk or other fluid.
By the means herein before described a simple, inexpensive, and highly efficient

page_text: apparatus is obtained which is particularly adapted to the requirements of
refreshment bars and hotels.
Doted this 25th day of January 1899
WHITE & WOODINGTON,
Rooms 221-225, Birkbeck Bank Chambers,
Southampton Buildings, London, Agents.
Improvements in or connected with Boilers or Heating Apparatus
Applicable for Obtaining and Maintaining in a Heated Condition
Intusions of Coffee or the like.
I, EBENEZER BOYES, of Albert Road, Peckham, in the County of Surrey,
Wholesale Coffee Dealer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
The invention relates to improvements in or connected with boilers or heating
apparatus applicable for obtaining and maintaining in a heated condition in-
fusions of coffee or the like and the primary object of the invention is to obtain a
simple inexpensive and convenient device adapted to stand upon a refreshment,
bar or in other place and by the aid of which the coffee may be infused in
several separate vessels and in said vessels maintained at the required temperature
for use.
In carrying the invention into effect a vertical boiler is employed consisting
of an outer cylindrical shell or case within which is arranged an annular water:
chamber formed with a central well consisting of a conical tube closed at the
bottom and extending down to and slightly through an axial aperture in the
bottom plate of the boiler.
The bottom plate of the boiler is located some distance above the bottom of
the outer shell or case and does not extend in a horizontal line to the shell or
case but at its periphery is bent downward at an angle to meet the lower edge
of the case or shell to which it is soldered or brazed thus forming a recess or heating
chamber at the bottom of the boiler surrounded by an annular water space
which protects the shell or case from the action of the heating means employed.
The top plate of the boiler at its centre is formed with an aperture coincident
with the conical tube or well and is united therewith by a soldered or other
joint and at its periphery said top plate is carried by the case or shell but suit-
able apertures are provided around said top-plate for the escape of steam from the
water chamber whilst the top plate of the boiler is formed dish shaped in order
that the water of condensation may drain into the well.
The shell or casing at the top is covered by a plate united therewith in a
steam tight manner and in suitable positions it is provided with several apertures
surrounded by recessed seats adapted to receive the bottoms of the jugs or other
vessels containing the infusion of coffee or the like and in order to prevent the
undue escape of steam at those points the seats may be furnished with suitable
packing whilst covers are provided to close any of the apertures which are not
for the time being in use.
The space between the top plate of the boiler and the top of the shell or case
virtually constitutes a steami heating chamber and the bottoms of the vessels are
directly exposed to said heat.
A funnel shaped filling tube extending through the case and boiler and closed

page_text: by a conical plug is provided through which the boiler may be charged with
water whilst the necessary small quantity of water to charge the well may be
poured through one of the seated apertures for the vessels onto the dished top
plate of the boiler whence it will naturally drain into the well.
In order to indicate the level of the water in the boiler and well floats are
provided furnished with rods or spindles which extend upward to the outside
of the apparatus through apertures formed in suitable positions whilst a draw
off tap is provided at the side of the boiler to supply the water necessary for
infusing the coffee but this tap is located at a short distance from the bottom
of the boiler so as to prevent the possibility of the boiler being completely
emptied whilst at work."
Any suitable means may be employed to heat the water in the boiler but the
peculiar construction of Bunsen burner hereinafter described and which forms
part of the present invention is the preferred device.
When first starting the apparatus and at other times it is necessary to rapidly
heat the water in the boiler and for that purpose a powerful burner located
beneath the boiler is necessary whilst when that is accomplished the large burner
may be dispensed with and a comparatively small jet beneath the well will suffice
to generate sufficient steam to heat the coffee vessels and to keep up the tem-
perature of the water in the boiler.
For this purpose the body or case of the burner is formed cylindrical and open
at the bottom and at its upper part it is provided with an annular enlargement
into which is fitted an inverted cone at its upper part of slightly smaller diameter
than the enlargement and provided around its exterior with several radially
disposed lugs or distance pieces which take a bearing upon the floor of the annular
enlargement and by coming against the wall of said Enlargement act as distance
pieces to centralise the cone and leave an annular gas passage around the same.
At the lower part of the cylindrical case and at one side thereof is provided
a gas jet carried by a bridge or bar extending across the bottom of the cylindrical
case which is supplied from the service pipe and controlled by a tap or valve and
the gas in its passage through the cylindrical case mixes with the air in the
required manner and issues around the cone by which it is spread and forms
a powerful flame beneath the boiler which is mounted upon suitable feet or sup-
ports and this device constitutes the large burner.
Passing axially through the cone and made tight therewith is a tube the upper
end of which constitutes a burner and which at its lower end which is open is
supported upon an upper bar or bridge located at a short distance from the
bottom of the cylindrical case and in axial alignment with and immediately
beneath or more or less entering into said tube is provided a gas jet which is
also carried by the lower bridge and is by a branch separately controlled by a
tap or valve and also connected with the service pipe supplied with gas and this
device constitutes the small burner beneath the well.
The casing and the cone are preferably formed of cast iron and thus a simple
and inexpensive burner is obtained.
It will be obvious that the apparatus hereinbefore described may also be use-
fully employed for heating or maintaining in a heated condition milk or other
fluid.
And in order that the said invention may be more clearly understood and
readily carried into effect I will proceed aided by the accompanying drawings
more fully to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical section taken on the line 1-1 of Figure 2 of an apparatus
constructed according to the present invention.
Figure 2 is a plan thereof with the jugs removed.
Figure 3 is a horizontal section taken on the line 2-2 of Figure 1 of the
burner separately and

page_text: Figure 4 is a similar view thereof taken on the line 3-3 of Figure 1.
In the several figures in which like parts are indicated by similar letters of
reference Figures 3 and 4 are drawn to an increased scale with respect to
Figures and 2.
a represents a counter or table upon which the apparatus is placed and b repre-
sents the jugs or vessels in which the coffee or the like is infused.
c represents a vertical boiler consisting of an outer cylindrical shell or case
within which is arranged an annular water chamber formed with a central
well consisting of a conical tube closed at the lower end and extending
down into and slightly through an axial aperture provided in the bottom plate
of the boiler and made tight therewith by soldering or brazing.
The bottom plate of the boiler is located some distance above the bottom of
the outer shell or case e and does not extend in a horizontal line to said shell
or case but at its periphery is bent downward at an angle to meet the lower
edge of the case or shell e to which it is soldered or brazed thus forming a recess
or heating chamber c** at the bottom of the boiler surrounded by an annular
water space which protects the shell or case & from the action of the heating
means employed.
The top plate of the boiler at its centre is formed with an aperture coincident
with the upper end of the conical tube or well and is formed in one therewith
by casting or otherwise or is united therewith by a soldered or other joint and at
its periphery said top plate is carried by the case or shell but suitable
apertures are provided at intervals around said periphery for the escape of
steam from the water chamber whilst the top plate is formed dish shaped
in order that the water of condensation may drain into the well ².
The shell or casing e at the top is covered by a plate united therewith in a
steam tight manner and in suitable positions it is provided with several aper-
tures surrounded by recessed seats 8 adapted to receive the bottoms of the
jugs or other vessels & containing the infusion of coffee or the like and in order
to prevent the undue escape of steam at those points the seats 8 may be fur-
nished with packing rings of asbestos or other suitable material whilst covers
(not shown) are provided to close any of the apertures which are not for the
time being in use.
of the
The space between the top plate of the boiler and the top plate
shell or case virtually constitutes a steam beating chamber and the bottoms
of the vessels are directly exposed to said heat.
A funnel shaped filling tube extending through the top plate of the
casing and the corresponding plate of the boiler and closed by a conical
plug is provided through which the water space c¹ of the boiler may be
charged with water whilst the necessary small quantity of water to charge the
well may be poured through one of the seated apertures for the vessels b
onto the dished top plate of the boiler whence it will naturally drain into the
well.
In order to indicate the level of the water in the boiler and well floats d
are provided furnished with rods or spindles which extend upward to the
outside of the apparatus through apertures formed in suitable positions in the
top plates whilst a draw off tape is provided at the side of the boiler to
supply to the vessels the water necessary for infusing the coffee but this tap
is located at a short distance from the bottom of the boiler so as to prevent the
possibility of the boiler being completely emptied whilst at work.
The boiler is supported upon wels or feet f¹ cast with a plate f² and radially
arranged in the interior of a loose cylindrical perforated casing f which con-
stitutes a combustion or heating chamber and which together with the feet fl
rests upon the table or counter .
Any suitable means may be employed to heat the water in the boiler but
the peculiar construction of Bunsen burner hereinafter described and which
forms part of the present invention is the preferred device.

page_text: When first starting the apparatus and at other times it is necessary to rapidly
heat the water in the boiler and for that purpose a powerful burner located
beneath the boiler is necessary whilst when that is accomplished the large
burner may be dispensed with and a comparatively small jet beneath the bottom
of the casing of the well will suffice to generate sufficient steam to heat the
coffee vessels and to keep up the temperature of the water in the boiler.
For this purpose the body or case y of the burner which may be of cast iron is
formed cylindrical and open at the top and is provided with an annular enlarge-
ment or chamber gl which rests upon the plate f and the annular enlarge-
ment is fitted with an inverted cone g² at its upper part of slightly smaller
diameter than the enlargement g¹ and provided around its exterior with several
radially disposed lugs or distance pieces which may be cast therewith and
take a bearing upon the annular floor of the enlargement or chamberg and by
coming against the wall of said enlargement act as distance pieces to centralize
the cone g and leave an annular gas passage around the same.
At the lower part of the cylindrical case or body g of the burner is provided
a gas jet which is carried by a lower bridge or bar g extending across the
bottom of the cylindrical case g and this jet his supplied from the service pipe
by a branch controlled by a tap or valve 2 and the gas in its passage through
the cylindrical case g mixes with the air in the required manner and issues in a
thin stream at the top of the annular chamber or enlargement g around the
cone by which it is spread out and forms a powerful circular flame beneath
the water space e¹ of the boiler c and this device constitutes the large or main
burner.
Passing axially through the cone and made tight with the closed lower end
thereof is a tube 6 the upper end of which constitutes a burner and this tube at
its lower end which is open is supported upon an upper bar or bridge g5 located
at a short distance from the bottom of the cylindrical case g.
In axial alignment with and immediately beneath or more or less entering
into the tube g is provided a gas jet i which in common with the jet his carried
by the lower bridge g and, by a branch pipe controlled by a tap or valve
also connected with the service pipe, supplied with gas and this device constitutes
the small burner beneath the well .
The casing of the burner and the cone ² are preferably formed of cast iron
and thus a simple and inexpensive burner is obtained.
The operation of the apparatus will be gathered from the foregoing description
but in recapitulation, it may be shortly stated that the water space of the
boiler and the corresponding space of the well are charged with water to
a suitable level as shown by the indicators of the floats & and the tap or
valve of the branch supplying gas to the large or main burner g is turned
on and the mixture of gas and air issuing around the cone is ignited and when
the water in the space c¹ of the boiler is sufficiently heated the tap is turned
on and the mixture of gas and air issuing from the upper end of the tube g"
becomes ignited after which the tap 2 is turned off and the large burner is dis-
pensed with the small burner being then sufficient to maintain the water in the
well and boiler e at the requisite temperature.
The steam issuing from the boiler through the apertures * around the top
plate and also from the well passes into the steam chamber c* and there acts
directly upon the bottoms of the jugs or other vessels whilst the water of
condensation from the steam by reason of the dished form of the top plate
the boiler drains back into the well c³.
of
It will be obvious that the apparatus herein before described may be usefully
employed for heating or maintaining in a heated condition milk or other fluid.
By the means herein before described a simple inexpensive and highly efficient
apparatus is obtained which is particularly adapted to the requirements of re-
freshment bars and hotels.

page_text: Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:
.
1. A boiler or heating apparatus comprising an annular water space, a central
well extending to the bottom of the boiler, a dished annular top plate to the
boiler at its outer periphery provided with steam ways and united with the shell
or case of the boiler and at its inner periphery united with the top edge of the
well, a covering plate to the entire device provided with seated apertures for
jugs or other vessels, a stoppered filling opening to the boiler, means for indi-
cating the level of the water in the water space and well and means for heating
either the entire device or the central well as may be required substantially as
herein shown and described and for the purpose stated.
2. A boiler or heating apparatus comprising an annular water space a bottom
plate of smaller diameter than the boiler and having a downwardly inclined edge
or rim united with the case or wall of the boiler, a central well extending through
the bottom plate, a dished annular top plate at its outer periphery provided with
steam ways and at its inner periphery united with the top edge of the well, a
covering plate to the entire device provided with seated apertures for jugs or
other vessels stoppers or covers to close those of said apertures which are not
for the time being in use, a stoppered filling opening to the boiler, floats in the
water space and well provided with indicating rods passing to the exterior of the
apparatus, a draw off tap located above the bottom of the boiler and means for
heating either the entire device or the central well as may be required substan-
tially as herein shown and described and for the purpose stated.
3. A boiler or heating apparatus comprising an annular water space a central
well extending to the bottom of the boiler, a dished annular top plate to the
boiler at its outer periphery provided with steam ways and united with the shell
or case of the boiler and at its inner periphery united with the top edge of the
well, a covering plate to the entire device provided with seated apertures for
jugs or other vessels, a stoppered filling opening to the boiler, means for indi-
cating the level of the water in the water space and well, a burner or heating
device consisting of a cylindrical case or mixing chamber having an annular
enlargement at the top an inverted cone provided with radial lugs or distance
pieces and fitting said enlargement in such manner as to leave an annular gas
way around the top edge thereof, an axial tube passing through the closed bottom
of the cone and at its upper end constituting a burner and at its lower end
supported by an upper bridge, a jet carried by a lower bridge and supplying
gas to the mixing chamber or case, a gas jet supplying gas to the lower end of the
axial tube, and valve controlled conduits for conveying gas to the jets substan-
tially as herein shown and described and for the purpose stated.
4. A burner or heating device comprising à cylindrical case or mixing
chamber having an annular enlargement at the top an inverted cone provided with
radial lugs or distance pieces and fitting the enlargement in such manner as to
leave an annular gas way around the top edge thereof, an axial tube passing
through the closed bottom of the cone and at its upper end constituting a burner
and at its lower end supported by an upper bridge, a gas jet carried by a lower
bridge and supplying gas to the mixing chamber or case, a jet supplying gas to
the lower end of the axial tube and valve controlled conduits for conveying gas
to the jets substantially as herein shown and described and for the purpose stated.
5. A boiler or heating apparatus constructed arranged and operating substan-
tially as herein shown and described.
WHITE & WOODINGTON,
Birkbeck Bank Chambers, Southampton Buildings, London, Agents.