STEAM BOILER OR OTHER FURNACES." IMPROVEMENTS IN OR CONNECTED WITH
Year: 1877

page_text: LETTERS PATENT to Frederick Charles Richardson, of Haverhill, in the County
of Suffolk, for the Invention of
"
STEAM BOILER OR OTHER FURNACES."
IMPROVEMENTS IN OR CONNECTED WITH
Sealed the 20th July 1877, and dated the 23rd January 1877.
PROVISIONAL SPECIFICATION left by the said Frederick Charles Richardson
at the Office of the Commissioners of Patents on the 23rd January 1877.
FREDERICK CHARLES RICHARDSON, of Haverhill, in the County of Suffolk:
"IMPROVEMENTS IN OR CONNECTED WITH STEAM BOILER OR OTHER FURNACES."
The improvements constituting this Invention relate to steam boiler or other
furnaces, and have for their object the obtaining of a more perfect combustion than
hitherto of the smoke and other gaseous products arising from the combustion of
coal or other fuel in such furnaces, and a consequent economising of fuel.
»
The improvements relate more particularly to the furnace door, and to an
improved apparatus or "consumer constructed and arranged in connection withi
the bridge, and designed for the purpose of admitting hot air from the ash-pit intó
the flues, to mingle with the smoke and cause its perfect combustion therein, after
it has passed the bridge from the fire-chamber.
The improvements in the furnace door are designed to admit air into the furnace
to cause more perfect combustion there, and they consist in cutting parts from the
door centrally of its width at the top and bottom so as to form openings bevilled in
such directions as to give an oblique ascending direction to air entering the furnace
therethrough.
The "consumer" consists of a casing running in an oblique upward direction from
the ash-pit below and behind the bridge. It and the bridge may be made hollow and
rivetted to the boiler.to allow of free circulation of water around it if desired. Its
main air passage is made deeper at its opening into the ash-pit'than at its top or outlet.
Hot air enters it from the ash-pit through a wide bevilled inlet or opening cut in
the plate below the bridge; the quantity of air entering it may be controlled by a
damper drilled with a number of holes countersunk on the ash-pit side, and which
may be worked by a lever or chain and ball, and the hot air passes from it to the
flues through its top or outlet, and also through a long bevilled opening cut in 'its
[Price 6d1

page_text: hinder or back side. The consumer is self-cleansing; all flue dust or ash which
may get thereinto falls down its inclined surface into the ash-pit.
"
"
If necessary two consumers may be used in combination, the second being
situated about the middle of the flues, and hot air being admitted thereto by pipes
or tubes placed on each side of the furnace and fitted with valves drilled with
countersunk holes to control the admission of the air as required.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick Charles Richardson in the Great Seal Patent Office on the
23rd July 1877.
FREDERICK CHARLES RICHARDSON, of Haverhill, in the County of Suffolk.
"IMPROVEMENTS IN OR CONNECTED WITH STEAM BOILER OR OTHER FURNACES."
The improvements constituting this Invention relate to steam boiler and other
furnaces, and have for their object the obtaining of a more perfect combustion (than
hitherto) of the smoke and other gaseous products arising from the combustion of
coal or other fuel in such furnaces, and a consequent economising of fuel.
"
The improvements relate more particularly to the furnace doors (see Figures 1
to 3 on the accompanying Drawings), and to an improved apparatus or "consumer
(see Figures 4 to 7), constructed and arranged in connection with the bridge, and
designed for the purpose of admitting hot air from the ash-pit into the flues to
mingle with the smoke, and cause its perfect combustion therein after it has passed
the bridge from the fire-chamber.
The improvements in the furnace doors are designed to admit air into the furnace
to cause more perfect combustion therein, and they consist in cutting openings 1 in
the door 2 centrally of its width at the top and bottom, and bevilled in such a
direction as to give an oblique ascending direction to air entering the furnace there-
through, as shown by the arrows. The air is prevented entering too cool by scrolls
or deflectors 3 affixed to the door, and which deflect and spread the entering air.
"
The "consumer consists of a casing 4 running in an oblique upward direction
from the ash-pit 5 below and behind the bridge 6. It and the bridge may be
rivetted to the boiler, and made so as to allow free circulation of water around it if
desired. Its main air passage 7 is made deeper at its opening 8 into the ash-pit
than at its top or outlet 9. Hot air enters it from the ash-pit through its inlet 8
which is a wide bevilled opening cut in the plate below the bridge; the quantity of
air entering it is controlled by a wide damper 10 drilled with a number of holes 11
countersunk on the ash-pit side, and which is worked by a lever 12 or chain and
ball or other equivalent appliance, and the hot air passes from it to the flues 13
through its top or outlet 9, and also through a long bevilled opening or outlet 14 in
its hinder or back side. The consumer is self-cleansing; all flue dust or ash which
may get thereinto falls down its inclined surface into the ash-pit.
On the annexed Drawings Figure 1 represents an elevation of the furnace door
open; Figure 2, a similar view of it closed; and Figure 3, a vertical section shewing
the scrolls or deflectors.
"
Figure 4 represents a longitudinal vertical section of the furnace and flue of a
Cornish boiler, illustrating the application of the " consumer thereto; and Figure 5,
a cross section thereof through A, B.
If necessary two consumers 4 may be used in combination, as shewn in the
longitudinal vertical section, Figure 6, the second consumer 4* being situated about
the middle of the flues 13, and hot air being admitted thereto by pipes or tubes 15
running from under the furnace, and fitted at their front ends with valves 16
drilled with countersunk holes to control the admission of the air as required.
17 represents rings of fire-bricks, or fire-clay which may be fitted in the flues or

page_text: over the end of the furnace above the outlet openings of the consumers to prevent
the cool air impinging against the plates 18 surrounded by the water.
Figure 7 represents the application of a consumer to the fire-box of a locomotive,
portable, or traction engine. In these furnaces the consumer may be fitted either
at the front or back end across the middle or at the sides.
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, I would remark in conclusion that I claim as the Invention secured to me
under the above in part recited Letters Patent,-
-
First. The above-described improvements in the furnace doors of steam boiler and
other furnaces.
consumers
"
Second. The application to steam boiler and other furnaces of "
constructed and arranged substantially as described and as illustrated on the
accompanying Drawings, and in which the outlet into the flues is so contracted as
to be of less dimensions than the inlet from the ash-pit, both substantially as
and for the purposes above specified, and as illustrated on the accompanying
Drawings.
In witness whereof, I, the said Frederick Charles Richardson, have hereunto
set my hand and seal, this Twentieth day of July, in the year of our Lord
One thousand eight hundred and seventy-seven.
F. C. RICHARDSON. (L.S.)