An Improved Smoke-consumer and Fuel-economizer.
Year: 1892

page_text: Date of Application, 12th July, 1892
Complete Specification Left, 12th May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
An Improved Smoke-consumer and Fuel-economizer.
We, LUKE DELANEY, Boiler-maker, and PETER KERSHAW, Dyer, both of
Hall Lane Dye Works, Bradford, in the County of York, do hereby declare the
nature of this invention, to be as follows:-
This invention relates to smoke-consumers for economizing the fuel in steam-
boiler and other furnaces.
As an example we will describe our invention as applied to the furnace of a
horizontal internally-fired boiler having side flues. We construct a narrow chamber,
preferably of cast-iron, and adjust same in position transversely below the boiler
outside the front of the brickwork. The ends of this chamber are open and are
made to communicate with the two side flues, portions of the masonry being
removed for that purpose. There is also an opening in this chamber in the middle
upper portion of same which communicates with another chamber or flue, also of
cast-iron or other suitable metal, passing below the fire-bars and extending to the
back of the bridge and rising up to near the top of same. Another bridge or wall
is arranged behind the first, the second named chamber or flue intervening between
the two bridges. In the case of doubly-fired boilers there are two openings in the
upper portion of the first named chainber, communicating with two of the second
named chambers or flues, arranged in the same manner as before, and with two
bridges to each furnace. Where the furnace or furnaces is or are also provided
with a central flue below the boiler, the first named chamber may be made to
communicate either with this central flue only or with the two side flues only.
These chambers are furuished with holes, covered by doors, for cleaning purposes,
and the first named chamber is supplied with dampers to regulate the draught.
Steam is injected, by pipes from the boiler passing into the second named chambers,
to increase the draught when required.
The smoke and gases coming from the furnace or furnaces, by way of the side
flues or central flue, enter the first named chamber, and passing from thence into
the second named chamber or flue or chambers or flues, where they become heated
and expanded, are given off between the top ends of the two bridges where the
furnace flames ignite them.
CROSSLEY & Co.,
72, New Market Street, Bradford, Yorks, Agents..

page_text: We, LUKE DELANEY, Boiler-maker, and PETER KERSHAW, Dyer, both of
Hall Lane Dye Works, Bradford, in the County of York, 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 :-
This invention relates to smoke-consumers for economizing the fuel in steam-
boiler and other furnaces.
As an example we will describe our invention as applied to the furnace of a
horizontal internally-fired boiler having side flues. We construct a narrow chamber,
preferably of cast-iron, and adjust same in position transversely below the boiler
outside the front of the brickwork. The ends of this chamber are open and are
made to communicate with the two sides flues, portions of the masonry being
removed for that purpose. There is also an opening in this chamber in the middle
upper portion of same which communicates with another chamber or flue, of cast-
iron or other suitable metal, passing below the fire-bars and extending to the back
of the bridge and rising up to near the top of same. . Another bridge or wall is
arranged behind the first, the second named chamber or flue intervening between
the two bridges. In the case of doubly fired boilers there are two openings in the
upper portion of the first named chamber, communicating with two of the second
named chambers or flues, arranged in the same 'manner as before, and with two
bridges to each furnace. Where the furnace or furnaces is or are also provided with
a central flue below the boiler, the first named chamber may be made to communicate
either with this central flue only or with the two side flues only. These chambers
are furnished with holes, covered by doors, for cleaning purposes,, and the first
named chamber is supplied with dampers to regulate the draught. Steam is
injected, by pipes from the boiler passing into the second named chambers, to
increase the draught when required.
The smoke and gases coming from the furnace or furnaces, by way of the side
flues or central flue, enter the first named chamber, and passing from thence into
the second named chamber or flue or chambers or flues, where they become heated
and expanded, are given off between the top ends of the two bridges, where the
furnace flames ignite them..
In the drawings accompanying this Specification,
Fig. 1 is a front elevation of a steam-boiler and furnace, having one form of our
invention applied thereto, and Fig. 2 is a sectional plan of same. Fig. 3 is a front
elevation, showing another form of our invention adapted to a doubly fired furnace,
and Fig. 4 is a sectional plan thereof. Fig. 5 is a detail view in sectional plan,
and Fig. 6 is another detail view in plan, partly in section.
In the form shown in Figs. 1 and 2 the apparatus is made in accordance with the
first example, above set forth. In this case the apparatus conducts the products of
combustion from the side flues to the back of the fire-bridge: A represents the
narrow chamber or under portion of the inducing flue, and B the upper portion or
chamber. The open ends of the chamber or flue A pass through the masonry, and
are continued into the side flues of the furnace, for a suitable distance, forming the
open mouthed intakes a, a'. The upper portion of this inducing flue, that is the
chamber or flue B, is attached, at one end, to the opening midway of the chamber A,
and is continued along under the fire-bars of the furnace, passes under the fire-
bridge C, and then takes an upward turn, terminating, near the top of said
fire-bridge C, in an open mouth b. There is also another fire-bridge D built at the
back of the chamber B, between which said fire-bridge D and the fire-bridge C
the said chamber B and its open mouthed termination 6 are situated. When the

page_text: boiler is doubly fired we arrange two of the chambers or flues B to communicate
with the chamber or flue A, the two open mouths b of each such chamber or flue B.
intervening between two pairs of fire-bridges C and D built in each fire-way. The
lower chamber or flue A may also be made to communicate with a central flue
below a boiler, instead of with two side flues, in which case one or two intakes a.
may be located in such central flue. Suitable openings covered by doors (not
shown on the drawings) may be provided in the flues or chambers A and B, where-
convenient, for facilitating cleaning, and dampers (also not shown) are likewise
added where desirable to regulate the draught. The draught may also be improved
when required or thought desirable, although not necessary to our apparatus, by
injecting or passing steam from the boiler by means of pipes E, 'E', into the
chamber or flue B.
The smoke and gases coming from the back end of the furnace or furnaces,.
and passing along by way of the side flues or central flue, are drawn into the
lower chamber or flue A, by way of the intakes a, and a', and enter the-
chamber or flue B, passing along which they finally make their exit at the open
month b, having, during their travel, become highly heated and expanded, and
here they are consumed by the flames arising from the burning fuel of the
furnace.
In the modified form of our apparatus shown in Figs. 3, 4, and 5, the
products of combustion are conducted from the central flue of the furnace, and
passed into the flames, above the fire-bars, in front. The boiler here shown is.
doubly fired. A, A', are two lower chambers or flues communicating with two-
upper chambers or flues B, B'. The lower openings of the chambers or flies A, A',.
pass through the masonry, and are continued into the central flue of the furnace,
for a suitable distance, in the form of the intakes a, a', as before. The upper
chambers or flues B and B terminate in proximity to the fire-doors F, F, and are
provided at these open ends with knuckles f, f, to which the knuckles of the
doors F, F', are adjusted, and a pin being passed through the eyes of the knuckles,.
a hinge is thereby formed for the said fire-doors F, F', to swing upon. These
fire-doors are constructed in the slanting hollow form shown on the drawings, or
in a curved form, and thus constitute, in themselves, a continuation of the inducing
flues or chambers B and B. Their construction and that of the flues A and B
(which correspond to the flues A' and B') is more particularly shown in the left
hand bottom portion of Fig. 4, which shows a sectional view taken on the line 1, 2,
in Fig. 3, and in Fig. 5, which is a section on the line x, y, also in Fig. 3. Or
instead of the above described arrangement, the upper chambers or flues B and B'
may be continued on right up to the firing places and be slanted off so as to
leave an opening in front which is provided with the ordinary flat fire-doors, as
shown in part plan in Fig. 6, in which one of the chambers or flues B is represented
in section. The fire-doors may be hinged either side but the way shown is.
preferable in order to allow of the adaptation of the stop-gap f* (cast therewith or
thereon) which, moving in the direction of the dotted line, when the doors For F¹
are opened, effectually prevents the smoke and heat from the chambers B or B¹
reaching the person of the firer or stoker. These forms of our apparatus are
likewise capable of adaptation to the side flues of the furnace.
The products of combustion, in this example of our invention, pass from the back
end of the furnaces, under the boiler by way of the central flue, towards the front
end of which they are caught by the intakes a and a', and drawn into the furnace
again, above the burning fuel, by way of the chambers A, A', and B, B', through.
the hollow furnace doors F and F, in a highly heated and expanded condition, and
are by these means effectively consumed.
Our apparatus has been found to act so efficiently, in practice, that, in the case
of doubly fired boilers, when one fire has been replenished with fuel and the other
left burning clear, the dense smoke and products of combustion from the newly
fired furnace have been found to have been drawn into the furnace containing the.
clear fire and there consumed.

page_text: Having now particularly described and ascertained the nature of our said inven
tion, and in what manner the same is to be performed, we declare that we are
aware that it has been already proposed to withdraw.furnace gases from the flues
and to pass them by natural or forced draught to the furnace flames through the
fire-doors, and we wish it to be understood that we do not claim generally such
arrangements, but what we claim is :-
1. The construction and arrangement of the apparatus substantially as herein
described and shown on the drawings for the purpose of withdrawing part or the
whole of the products of combustion emanating from the burning fuel in steam-
boiler and other furnaces from the flue or flues at a certain point or points therein
and inducing the said products of combustion to pass into the flames arising from
such burning fuel and thereby become consumed thereby also augmenting the heat
produced from a given quantity of fuel the operation being advanced or not by
the additional injection of steam into the apparatus.
2. The construction of inducing flues or chambers shown on the drawings at
Figs. 3 4 and 5 for the purposes specified in such a manner that their upper
terminations or parts nearest the fire shall constitute a fire-door hinge the door
whereof turns or swings on such hinge (the inducing flue itself remaining stationary)
the said door being provided with a slanting or curved cavity or chamber therein
and being in itself a continuation of the said inducing flue or chamber and also the
construction of the modified form of such apparatus having the flat doors shown
and described with reference to Fig. 6.
Dated this 11th day of May 1893.