Improvements in Flues or other similar Means for Conveying Combustible Gas from the Producer to the Point where such Gas is Consumed.
Year: 1891

page_text: Date of Application, 15th Jan., 1891
Complete Specification Left, 16th Nov., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Flues or other similar Means for Conveying
Combustible Gas from the Producer to the Point where such
Gas is Consumed.
We, DAN RYLANDS of Stairfoot near Barnsley in the County of York Glass
Bottle Manufacturer and RICHARD POTTER of Dearne Terrace Stairfoot near
Barnsley aforesaid Furnace Builder, do hereby declare the nature of this invention
to be as follows:-
This invention has for its object the securing of a better and more even
combustion of the gases used in gas fired boilers, kilns, furnaces &c. together with
To this end
greater economy in fuel and more durable construction than hitherto.
in conveying the gas made in the producer we construct of firebrick or other
suitable material a flue. Into this flue we introduce or suspend a tube made of
wrought iron or other suitable substance. Through this inner tube air is made to
travel to the point of combustion. The hot gases from the producer are conveyed
in the outer flue thereby heating the inner tube and the air which is being passed
through it.
At the points where it is required to ignite the gas short branch flues are
arranged to convey the gas and hot air under or through the boilers or into the
kiln. These branch flues are connected to a combined igniting port made in three
compartments the centre compartment being for hot air, the second for gas the
outer for air thus securing a thorough admixture of the particles of combustion.
The branch pipes and flues are fitted with suitable valves for regulating and
controlling the supply of gas and hot air. It will be apparent the respective
positions of the gas and air flues can be reversed if so desired the air being made to
pass along or through the outer flue and the gas be made to pass along or through
the inner flue. The inner flue may be constructed of one or more tubes connected
at the ends so that the air or the gas has a greater length to travel. The inuer
tube may be constructed of plain tubing or corrugated or flanged or ribbed or of
any mode of construction to obtain a greater area for the heating of the air or for
giving off heat. We wish it to be well understood that where preferred the air
flue may be built over the gas flue or the gas flue be built over the air flue or the
air flue may be built at the side of the gas flue, or it may be constructed in the
centre between the two gas flues, also that we may have two or more air flues
alongside two or more gas flues. The air flues and gas flues in addition to our
present form of construction may have regenerative bricks commonly called checker
work placed in.them and they may be worked on the regenerative principle.
As a further developement of our special process of making the hot gas heat the
air which has to be used along with it for combustion we construct a gas producer
of iron or other suitable substance in such a manner that it has an outer encasement
round the usual iron shell and we cause any required quantity of air to travel
between this outer encasement and the centre shell and this air is conveyed
forwards along the special flues hereinbefore described.
Dated this 14th day of January 1891.
DAN RYLANDS.
RICHARD POTTER,

page_text: .COMPLETE SPECIFICATION.
Improvements in Flues or other similar Means for Conveying
Combustible Gas from the Producer to the Point where such
Gas is Consumed.
We, DAN RYLANDS of Stairfoot near Barnsley in the County of York Glass
Bottle Manufacturer and RICHARD POTTER of Dearne Terrace Stairfoot near
Barnsley aforesaid Furnace 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 :--
This invention has for its object the securing of a better and more even
combustion of the gases used in gas fired boilers, kilns furnaces &c. together with
greater economy in fuel and more durable construction than hitherto.
In the accompanying drawings
Figs. 1, 2, 3, 4, 5 and 6 are sectional elevations of combined gas and air flues showing
the method of construction, and the means adapted for heating the incoming air
supply.
Fig. 7 is an elevation in section illustrating an arrangement of burner or ignition
port as applied to a Lancashire, Cornish, or internally fired boiler. The same
arrangement of burner is also applicable to the firing of kilns, furnaces &c.
Referring to Figs. 1 to 6 (in which similar letters of reference indicate similar
parts) a is the air supply flue, and ↳ the gas flue. The walls of the combined flues
may be constructed of firebrick as illustrated by Figs. 2, 3 and 6; or a combination
of iron and firebrick as shown by Fig. 1, in which c is the outer iron casing lined
internally with firebrick d. Or the construction may be wholly of iron as indicated
by Figs. 4 and 5. The air supplying tube consists of a circular, rectangular, square,
or other suitable form of tube and may have formed on its outer or inner diameter
corrugations or ribs for the better passage and radiation of the heat from the gas to
the air flue. It will be seen that the gas in its passage from the producer to the
point of ignition will radiate and give up a portion of its heat to the incoming air
supply, and that the conditions of perfect combustion will be better fulfilled than by
the admittance of cold air. It will be evident that the respective positions of the
gas and air flues can be reversed if desired, the air being made to pass along or
through the outer flue and the gas be made to pass along or through the inner flue;
also that the inner flue may be constructed of one or more tubes connected at the
ends so that the air or the gas has a greater length of tube to traverse giving more
time for the radiation and abstraction of heat from the gas to the air flue.
The arrangement & position of the gas and air flues may be varied to suit
different requirements. The air flue may be built over the gas flue, or the gas flue
be built over the air flue as shown by Fig. 3; or the air flue may be built at the
side of the gas flue (Fig. 4); or the two air flues may be situated centrally between
the two gas flues (Fig. 5); also that we may have two or more air flues alongside
two or more gas flues (Fig. 4). The air and gas flues may have regenerative
bricks commonly called checker bricks placed in them and they may be worked
alternately on the regenerative principle.
As a further development of our special process of making the hot gas heat the
air which has to be used along with it for combustion we provide a gas producer
(not shown in the drawings) formed with an outer encasement around the usual
iron shell, and we cause any required quantity of air to travel between this outer
encasement and the producer shell after which the air is led off and conducted to
the burner arrangement by means of any of the arrangements of air flues previously
described.
Fig. 7 illustrates the arrangement of burner or ignition port as applied to an
internally-fired boiler and the method of connecting the burner with the afore-
described air and gas flues; 9 is the gas and the air flue; i the gas valve, ; the

page_text: air valve both valves being capable of adjustment and of being opened and closed
by the hand wheels kk; is an air admitting pipe fixed centrally in the interior of
the gas-admitting pipe m which again is placed centrally within the casing n, o the
flue of the boiler, p a sight or inspection door placed conveniently above and near
the end of burner and through which by means of a torch the air and gas issuing
from the burner can be ignited.
It will be seen that the concentric arrangement of gas and air pipes will
constitute an annular burner which will supply a central column of air surrounded
by an annular column of gas which again is surrounded by another annular column
of air. The air and gas being highly heated and by the above described arrange-
ment being so intimately mixed and commingled together will result in a nearly
perfect combustion which will be aided by the heat stored in the firebrick walls of
the combustion chamber q.
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 what we
claim is :-
1. The arrangement of tubes or flues for conveying the gas and air in such a
manner as to cause the air to become heated by the time it arrives at the point of
ignition substantially as herein described and illustrated with reference to
Figs. 1, 2, 3, 4, 5, and 6.
2. The special arrangement of tubes or flues mentioned in the preceding claim
in combination with the second or outer encasement around the usual shell of a gas
producer as described.
3. The arrangement of checker work within the inner gas or air tube as herein
described and illustrated with reference to Figs 3 and 6.
4. The special arrangement of gas burner consisting of the air-admitting pipe 7
inside the gas pipe m with an outer air pipe n as described and illustrated at
Fig. 7.
5. The special burner mentioned in Claim 4, in combination either with the
boiler flue or with the combustion chamber as shown in Fig. 7.
Dated this 14th day of November 1891.
DAN RYLANDS.
RICHARD POTTER.