An Appliance for Consuming Smoke and Utilising the Waste Heat of Boilers and Furnaces, thereby Saving the Consumption of Fuel.
Year: 1887

page_text: The decision of the Comptroller-General, of the 21st day of March 1892, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
An Appliance for Consuming Smoke and Utilising the Waste Heat
of Boilers and Furnaces, thereby Saving the Consumption of
Fuel.
I ALEXANDER ANDERSON of No. 12 Bright Street Monkwearmouth Sunderland in
the county of Durham Boiler Builder do hereby declare the nature of this invention
to be as follows:-
'The object of my invention is for the prevention of smoke and for utilising the
waste heat in any description of furnaces thereby causing a considerable saving in the
consumption of Fuel.
"The manner in which I propose to work my invention is as follows I place inside
the furnace in a suitable position a tubular receptacle or hot air generator made of any
desirable material to withstand the heat & having the interior divided into longitudinal
compartments to these longitudinal compartments I have separate air inlets in the front
plate of the furnace by means of which air is admitted to the furnace through the
longitudinal compartments in the tubular receptacle or hot air generator & in several
places if desired."
This tubular receptacle or hot air generator having the longitudinal compartiments
may be placed in an horizontal position above the level of the fire & of any desired
length & when once heated the air from the atmosphere passing through the longitu-
dinal compartments by means of the inlets in the front plate will be heated to a high
degree of temperature consequently the air mingling with the waste Gases in the
furnace increases the heat of such Gases before passing away up the Chimney &
entirely consumes all smoke.
The tubular receptacle or hot air generator may have any number of longitudinal
compartments & may be of any. length. If desired I may use a damper for each
air inlet for regulating the supply of air into the longitudinal compartment.
The tubular receptacle or hot air generator may be fixed in any desired place & can
be applied to any description of furnaces or Boilers.
Dated this 15th day of November 1887.

page_text: COMPLETE SPECIFICATION (AMENDED).
An Appliance for Consuming Smoke and Utilising the Waste Heat
of Boilers and Furnaces, thereby Saving the Consumption of
Fuel.
I ALEXANDER ANDERSON of 12 Bright Street Monkwearmouth Sunderland in the
county of Durham boiler builder 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 my invention is to provide a suitable means for utilizing the waste
heat in any description of furnace as-a-means for the purpose of preventing smoke &
for causing a considerable saving in the consumption of fuel.
In carrying my invention into effect I place in any desired position or as may be
found most suitable according to the particular case a tubular receptacle or hot air
generator through the interior of which air is regulated to pass from the front end
to the back, the tubular receptacle or hot air generator is preferably placed above the
line of grate surface but it may be placed in any other position, it is thus obvious
that the air passing from the front end to the back end of the tubular receptacle or
hot air generator is raised to a high degree of temperature & meeting with the waste
gases arising from the combustion of the fuel will consequently aid in consuming
all or a greater part of them & almost entirely dispense with smoke & effect a
considerable reduction in the consumption of fuel. In order to obtain a greater
degree of temperature to in the air passing through the tubular receptacle or bot air
generator I may perforate it with holes & I may use one or more of the tubular
receptacles or hot air generators as may be found necessary in carrying into effect
the utility of my invention, where necessary I may also use arch pieces or connections
with separate air inlets & which may be connected to the tubular receptacle or hot
air generator, & I may regulate the said air inlets by means of revolving or slide
doors.
In order that my said invention may be more fully understood I shall now proceed
to describe by means of the accompanying sheet of drawings the special features of
my invention. which it represents. Figure 1 represents a longitudinal section
elevation of the tubular receptacle or hot air generator placed in position above the
centre of the grate surface of a boiler furnace (shown in section) & secured rigidly in
the front plate. A is the front end of the a tube or hot air generator which projects
through the front plate B and C is the termination of the tube in the furnace.
Figure 2 is an end elevation of the boiler furnace & shows the arched connections D D
also shown dotted in Fig. 1 to the central tubular receptacle or hot air generator
& the manner in which the air is obtained designed to be heated before being
discharged at the end of the tubular, receptacle or hot air generator. Figure 3
represents a cross section of the furnace & shows the position of the tubular receptacle
or hot air generator at its extreme end C & its relative position to the aperture E in
the bridge; it will thus be seen that the cold air passing in at the side inlets D D
in of the arch pieces through the side apertures, and through the front end of the

page_text: tubular receptacle or hot air generator is raised to a high degree of temperature
before being discharged at the end C and will consequently aid in consuming all or
a greater part of the smoke and gases arising from the combustion of the fuel.
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
In boiler and other furnaces, the use of one or more tubular receptacles or hot air
generators in combination with arch pieces or bends, arranged and working substantially
as and for the purposes herein set forth.
1st. The tubular-receptacle-or hot air generator as in the manner-shown and
specified.
2nd. The front or hollow arch pieces for heating the air as described &
shown.
3rd. The method of consuming waste gases arising from any description of
furnace as a means of preventing smoke as in the manner described and specified.
4th. The manner of fiting one or more tubular receptacles or hot-air-generators
in any desired position and in any description of furnace as may be found
most suitable as a means of preventing smoke & utilising the consumption of
fuel.
ALEXANDER ANDERSON.

page_text: Date of Application, 16th Nov., 1887
Complete Specification Left, 15th Aug., 1888
Complete Specification Accepted, 21st Sept., 1888
of Boilers and Furnaces, thereby Saving the Consumption of
Fuel.
I ALEXANDER ANDERSON of No. 12 Bright Street Monkwearmouth Sunderland in
the county of Durham Boiler Builder do hereby declare the nature of this invention
to be as follows :-
The object of my invention is for the prevention of smoke and for utilising the
waste heat in any description of furnaces thereby causing a considerable saving in the
consumption of Fuel.
The manner in which I propose to work my invention is as follows I place inside
the furnace in a suitable position a tubular receptacle or hot air generator made of any
desirable material to withstand the heat & having the interior divided into longitudinal
compartments to these longitudinal compartments I have separate air inlets in the front
plate of the furnace by means of which air is admitted to the furnace through the
fongitudinal compartments in the tubular receptacle or hot air generator & in several
places if desired.
This tubular receptacle or hot air generator having the longitudinal compartments
may be placed in an horizontal position above the level of the fire & of any desired
length & when once heated the air from the atmosphere passing through the longitu-
dinal compartments by means of the inlets in the front plate will be heated to a high
degree of temperature consequently the air mingling with the waste Gases in the
furnace increases the heat of such Gases before passing away up the Chimney &
entirely consumes all smoke.
The tubular receptacle or hot air generator may have any number of longitudinal
compartments & may be of any length. If desired I may use a damper for each
air inlet for regulating the supply of air into the longitudinal compartment.
The tubular receptacle or hot air generator may be fixed in any desired place & can
be applied to any description of furnaces or Boilers.

page_text: COMPLETE SPECIFICATION.
An Appliance for Consuming Smoke and Utilising the Waste Heat
of Boilers and Furnaces, thereby Saving the Consumption of
Fuel.
I ALEXANDER ANDERSON of 12 Bright Street Monkwearmouth Sunderland in the
county of Durham boiler builder 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 my invention is to provide a suitable means for utilising the waste
heat in any description of furnace as a means of preventing smoke & for causing a
considerable saving in the consumption of fuel.
In carrying my invention into effect I place in any desired position or as may be
found most suitable a tubular receptacle or hot air generator through the interior of
which air is regulated to pass from the front end to the back, the tubular receptacle or
hot air generator is preferably placed above the line of grate surface but it may be
placed in any other position, it is thus obvious that the air passing from the front end
to the back end of the tubular receptacle or hot air generator is raised to a high
degree of temperature & meeting with the waste gases arising from the combustion of
the fuel will consequently consume all or a greater part of them & almost entirely
dispense with smoke & effect a considerable reduction in the consumption of fuel.
In order to obtain a greater degree of temperature to the air passing through the
tubular receptacle or hot air generator I may perforate it with holes & I may use one
or more of the tubular receptacles or hot air generators as may be found necessary in
carrying into effect the utility of my invention, were necessary I may also use
arch pieces or connections with separate air inlets & connected to the tubular
receptacle or hot air generator, & regulate the said air inlets by means of revolving
or slide doors.
In order that my said invention may be more fully understood I shall now proceed
to describe by means of the accompanying sheet of drawings the features of my
invention which it represents. Figure 1 represents a longitudinal section of the
tubular receptacle or hot air generator placed in position above the centre of the grate
surface & secured rigidly in the front plate. A is the front end of the tube which
projects through the front plate B and C is the termination of the tube in the furnace.
Figure 2 is an end elevation of the boiler furnace & shows the arched connections D D
to the centre tubular receptacle or hot air generator & the manner in which the air is
obtained to be heated before being discharged at the end of the tubular receptacle or
hot air generator. Figure 3 represents a cross section of the furnace & shows the
position of the tubular receptacle or hot air generator at its extreme end C & its
relative position to the aperture E in the bridge, it will thus be seen that the cold air
passing in the side inlets D D in the arch pieces and through the front end of the

page_text: tubular receptacle or hot air generator is raised to a high degree of temperature
before being discharged at the end C and will consequently consume all or a
greater part of the smoke and gases arising from the combustion of the fuel.
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
1st. The tubular receptacle or hot air generator as in the manner shown and
specified.
2nd. The front or hollow arch pieces for heating the air as described &
shown.
3rd. The method of consuming waste gases arising from any description of
furnace as a means of preventing smoke as in the manner described and specified.
4th. The manner of fiting one or more tubular receptacles or hot air generators
in any desired position and in any description of furnace as may be found
most suitable as a means of preventing smoke & utilising the consumption of
fuel.
Dated this 13th day of August. 1888