Improvements in Corrugated Flues and Fire Boxes of Steam Boilers.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Corrugated Flues and Fire Boxes of Steam Boilers.
JOHN IRELAND BOOKER 57 Tong Road New Wortley Leeds in the County of
Yorkshire Engineer do hereby declare the nature of this invention to be as
follows:-
The construction of Corrugated Flues and Fire Boxes in such a form and
shape that they can be easily and readily be fitted together or interchanged when
required.
And also easily and readily connected and fitted to each other as shown in the
Drawings submitted herewith and as described herein in this specification.
This invention consists in making and forming Gradual Tapering Corrugated
Cylindrical Flues The one End of which is made less in diameter than the other
which might be described as Cylindrical Conical Corrugated Gradual Tapering Flues
The Corrugated Portion of which Tapers regularly in diameter from one end to the
other as shown in the three sheets of drawings submitted herewith.
To describe this invention more clearly I will refer to the drawings. Taking No 1
Sheet first Figure 1
You will notice that the Cylindrical portion both Corrugated and plain is tapering
gradually in diameter-that is becoming smaller in diameter towards one end-That
is, gradually diminishing in diameter in a tapering manner until the smallest end is
a suitable diameter to fit inside the largest end of the second Flue.
By referring to Fig. 1 Sheet 1 you will see that the first length of the Corrugated
Flues are Tapering gradually from the large end a until at the small end b it is small
enough to fit accurately into the large end of the second length at b
And you will further notice that the second length gradually tapers in diameter
from 6 until the small end at 61 is small enough to fit accurately into the large end of
the third length
And that the third length in a similar manner Tapers gradually in diameter from
61 until it arrives to a diameter to fit or suit other lengths at 62 or into a Tube plate
or Lancashire Boiler End as may be required.
By the above being made in a gradual tapering Corrugated Cylindrical Diameter
and Form the ends do not require any recessing or expanding But are made to fit
either the Boiler Front and successive lengths or the Foiler Back plate at the same
time that the plate is first made into a gradual Tapering diameter Thus saving the
ends being reheated.
I will now draw your attention to Figure 2 Sheet 1 In this figure you will notice
that the Flues are still corrugated and that they are still gradually tapering in
diameter But instead of the small end of one fitting inside the large end of the other,
That instead the ends are flanged outwards so that the flanges as shown at a can
either be rivetted to the inside of the Boiler Front Plate or the outside of the Boiler
Front Plate.
'
And you will perceive by the dotted parallel lines c and c¹ that if the flange at a
be rivetted to the outside of the Boiler Front Plate that the flanges of the small End
at bis small enough to pass out through the hole in the Front Plate to which the
large enda is rivetted and fitted.

page_text: :
You will also notice that the flanges of the second length at 6 and b¹ and the flanges
of the third length at 61 and 2 are also within the dotted lines c and c¹, Thus
showing that when required they can be passed through the hole in the Boiler Front
Plate to which the front length is rivetted by the flange at a.
Now you will notice that both these Flues as shown in Figure 1 and 2 on sheet 1
through being constructed in the gradual Tapering Cylindrical Form will allow of the
end plates of Lancashire Boilers being rivetted to the Shell First, and these Flues can
be passed through the hole in the Front Plate of Boiler and rivetted afterwards
together.
I will now draw your notice to Figure 3 Sheet 1, You will still see that the Flue
is a gradual Tapering Corrugated Cylindrical Flue The Front end A of which is fitted
and rivetted to a Flange on the Front Plate of Boiler and that the Back or small end
is flanged either to fit the back end of a Boiler or the lower Front part of a Combustion
Box or Chamber on Fire Box of. a Marine or other Boiler And you will notice that
the Flange at is still smaller in diameter than the parallel lines c and c¹.
.
This you will see causes it to be an interchangeable flue, one that can very easily
be taken out when required by its being able to pass through the front Plate of
Boiler.
I will next refer to Fig. 4 Sheet 1 this flue differs from that shown in Figure 3
Sheet 1 By its showing the Flange on the large end a and the unflanged end at
the small end b.
This is to enable the flange on the front or large end to be rivetted and secured
on the outside of the Boiler Front and it does not necessitate the Boiler Front Being
flanged And the small end at b fits direct into a flanged combustion Chamber plate,
But its gradual tapering Corrugated Form still allows of it being readily removed and
passed out through the hole in the Boiler Front Plate at a.
Figure 5 Sheet 1 Shows a gradual Tapering Cylindrical Corrugated Flue as fitted to
form the Fire Box of a Vertical Boiler By this gradual Tapering Cylindrical
Corrugated Form. The steam generated on the upper half of each corrugation can
freely leave the vicinity of the plate and rise upwards to the surface-and By its
Gradual Tapering Form from a to b it is also readily taken out when required.
Figure 6 Sheet 2 Shows a Gradual Tapering Corrugated Cylindrical Flue with the
Back end or Small End flanged to suit the Fire Box or Combustion Box of a Marine
Boiler and you will still notice, that, this back end at 6 that it will still pass through
a hole the diameter of which suits the large end a.
Figure 7 Sheet 2 Shows a Gradual Tapering Corrugated Cylindrical Flue the back
end or small end of which is formed with a flange at and a projecting portion at b
which forms part of the bottom of combustion chamber or Fire Box should such be
desireable or necessary-This also in diameter and size is still shown smaller than
the dotted parallel lines c and c¹ which enables it to be passed out through the Hole
in Boiler Front Plate when required.
Figure 8 Sheet 3 Shows Gradual Tapering Corrugated Cylindrical Flues. The
large part at a being made to suit the flange on the front plate of the Boiler
And the flanges at b fitted together with an Adamson ring between them so has to
strengthen the flue where connected together..
Now having described the nature of my said Invention and various ways in which
it may be made I declare that what I claim is
1st. The construction of Gradually Tapering Corrugated Cylindrical Flues.
2nd. The forming of the Corrugations in a gradual Tapering Cylindrical plain
plate Cylinder after being weilded Such formation or Corrugating after the plate
Cylinder is weilded being done by Hydraulic pressure derived from the pumps or
Pump, Accumulator or Accumulators acting through fluid or upon the fluid and
thence upon the ram or rams of an Hydraulic Cylinder or Cylinders, which then acts
and applys the pressure to press one Corrugated Roller against another. Corrugated
Roller or towards one another.
3dly. The Forming of the Corrugations in a gradual Tapering. Cylindrical Plain
plate Cylinder after being weilded By Hydraulic pressure derived from Pumps and

page_text: accumulator acting upon the rams or ram by compressed Fluid in an Hydraulic
Cylinder or Cylinders which then acts and applies the pressure to press one Gradual
Tapering Corrugated Roller either against or towards another Corrugated Roller.
4thly. The forming of the Corrugations in a gradual Tapering Cylindrical Plain
Plate Cylinder after being weilded by Hydraulic pressure derived from pumps and
accumulator acting, upon a ram or rams of an Hydraulic Cylinder and Cylinders which
then acts and applies the pressure or movement of the rams either through toggle
Bars or through or by Hydraulic pressure acting upon the ram or rams of an
Hydraulic Cylinder or Cylinders in a Corrugating. Mill with stops formed to Housings
or Cylinders Such said stops to mean stops that are fast to the Housings of a
Corrugating Mill to prevent the Corrugated Rollers bearing harder than is necessary
upon the plate Cylinder than is required to form the Corrugations properly.
5th. The construction and Formation of the corrugations in a gradual Tapering
Cylindrical plain Plate Cylinder after being weilded by Hydraulic pressure. derived
from pump pumps & accumulator acting upon the ram or rams of an Hydraulio
Cylinder or Cylinders of an Hydraulic press, which then applies the pressure to press
a Corrugated Die against or towards another Corrugated Die to form a Gradual
Tapering Cylindrical Corrugated Flue or to Form part of a Gradual Tapering
Cylindrical Corrugated Flue or Fire Box.
6th. The formation of the Corrugations in a Gradual Tapering Cylindrical Plain
Plate or part of a Cylindrical Plain plate before it is weilded together.
The formation in such, of Corrugations to form a Gradual Tapering Corrugated
Cylindrical Flue.
Such formation being caused by Hydraulic pressure acting upon a ram or rams of
¡an Hydraulic Cylinder or Cylinders of an Hydraulic Press which then applies the
pressure to press and move a Corrugated Die or Dies against or towards another
Corrugated Die.
7th. The Formation of Flats or Plain portions being formed by Hydraulic pressure
in, amongst, or out of, the Corrugations of a Gradual Tapering Cylindrical Corrugated
Flue.
Or the Formation of such Plain parts or Flats in part or parts of a Cylindrical
Taper Plain Plate before the parts are weilded together.
8th. The Formation of Flat Parts in a gradual Tapering plain plate after it is weilded
by pressure derived from pumps and accumulators acting upon the ram or rams of an
Hydraulic Press Cylinder or Cylinders which then applies the pressure to press a die
against a die or towards a die with the object of Forming a gradual Tapering
Cylindrical Corrugated Flue or Fire Box or part of a Gradual Tapering Cylindrical
Corrugated Fire Box.
9. The Formation of such flanges and attachments as shown on the drawings
submitted herewith being formed on and to or attached as shown to such Gradual
Tapering Cylindrical Corrugated Flues or Fire Boxes either before or after being
weilded by direct or indirect pressure derived from pressure applied to Hydraulic
Ram or Rams.
10. The formation of Flanges as shown in the drawings submitted herewith in
which the power is obtained from or by worn wheels & screw worms and the revolving
motion of inachine tables enabling or causing such a Gradual Tapering Cylindrical
Corrugated Flue to revolve to allow it or cause it to be flanged.
Dated this day 1st. February_1897.
Improvements in Corrugated Flues and Fire Boxes of Steam Boilers.
JOHN IRELAND BOOKER 57 Tong Road New Wortley Leeds in the County of
Yorkshire Engineer do hereby declare the nature of this invention and in what

page_text: manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
.The construction of Corrugated and other sectional Flues and Fire Boxes with
their flanges and flat parts in such a form and shape that they can be easily and
readily be fitted together or Interchanged when required.
And also easily and readily connected and fitted to each other by the flanges as
shown or fitted to the parts of a Boiler as shown in the Drawings submitted herewith
and as described herein in this Specification.
This invention consists in making and forming gradual Tapering Corrugated
Cylindrical Flues The one end of which is made less in diameter than the other
which might be described as Cylindrical Conical Corrugated gradual Tapering flues of
an annular or other sectional form or shape-The Corrugated Portion of which tapers
regularly in diameter from one end to the other as shown in the 5 Sheets of
drawings submitted herewith 3 of which were filed with the provisional specification.
To describe this invention more clearly I will refer to the drawings. Taking No. 1
Sheet Figure 1 You will notice that the Cylindrical Portion both corrugated and
plain is tapering gradually in diameter that is becoming smaller in diameter
towards one end-That is gradually diminishing in diameter in a tapering manner
until the smallest end is a suitable diameter to fit inside the largest end of the second
Flue By referring to Figure 1 Sheet 1 you will see that the first length of the
corrugated Flues are tapering gradually from the large end a until at the small end b
it is small enough to fit accurately into the large end of the second length at band
you will further notice that the second length gradually tapers in diameter from b
until the small end at 61 is small enough to fit accurately into the large end of the
third length.
And that the third length in a similar manner tapers gradually in diameter from 61
until it arrives to a diameter to fit or suit other lengths at 62 or into a tube plate or
Lancashire Boiler end as may be required By the above being made in a gradual
tapering corrugated Cylindrical diameter and form the ends do not require any.
recessing or expanding But are made to fit either the Boiler Front Plate and
successive lengths or the Boiler Back Plate at the same time that the plate is first
formed into a gradual Tapering Cylindrical diameter or form Thus saving the ends
being reheated except when heated to form the annular or other sectional
corrugations.
I will now draw your attention to Sheet 4 Figure 1 where you will notice that the
body of the Flues is still of a gradual Tapering form, The largest part at a being
made to fit either a loose angle ring which is rivetted to the Boiler Front plate or
the flanged Front plate of a Boiler of the Lancashire or Cornish Type Whilst the
smallest end is flanged outwards to fit inside the large end of the second length at b
The succeeding lengths being formed in a simalar form This is to enable the rivets
at the joints to be kept clear of the flame and to form a stronger joint or form.
I will now draw your attention to Figure 2 Sheet 1 In this figure you will
notice that the Flues are still gradually tapering in diameter whilst still they may
be annular or other corrugations But instead of the ends fitting inside the large
end of the other-That instead the ends are flanged outwards so that the flanges as
shown at a can be rivetted either to an angle Ring which is rivetted to the Boiler
Front Plate or be rivetted either to the inside or outside of a Boiler Front plate
direct, Now you will perceive by the dotted parallel lines c and c¹ that if the flange
at a be rivetted to the outside of the Boiler Front Plate that the flanges of the
small end at his small enough to pass out through the hole in the Front Plate to
which the large end a is rivetted and fitted also that the flanges of the second
length at b and b₁ and the flanges of the third length at b' and 62 are also within
the dotted lines c and c¹. Thus showing that when required they can be passed
through the hole in the Front Plate of Boiler to which the first length is attached
or fitted at a In the forms mentioned now you will notice that these Flues being
made as shown can be very easily passed through the hole in the Front Plate of
Boiler..

page_text: Also through their being constructed in the gradual Tapering form-The heat will.
be retained equally throughout the length of a Lancashire or Cornish Boiler Flue
By the small part retarding the Heat and flame and by the better combustion at
each of the enlarged parts of the flue instead of the heated gases. being allowed-to:
escape at once to or through the end of Boiler before being consumed.
Also by the Flanges or raised parts at the small ends being deeper It causes the
Flue to be stronger at that part therebye strengthening it at regular distances.
1 will now draw your notice to Figure 3 Sheet 1 You will see that the Flue is still
a gradual Tapering sectional Corrugated Cylindrical Flue The front end a of which
is fitted and rivetted to a flange on the front Plate of Boiler and that the back or
Bmall end is flanged to fit either the Back end of a Boi'er or the lower front Part of
a Combustion Box or chamber of a marine or other Boiler And you will notice that'
the flange at b is still smaller than the parallel lines c and c¹ in diameter and size.
This you will see causes it to be an interchangeable flue One that can be very
easily taken out when required by its being able to be passed through the front Plate
of Boiler and also its form by having a small end or smaller diameter at the back It
will allow of being taken out through the front Plate even when the Top Flange at
the Back Part is higher.
I will next refer to Figure 4 Sheet 1 This Flue differs from that shown in
Figure 3 Sheet ] By its showing the flange on the large end a and the unflanged
end at the small end b This is to enable the flange on the front or large end to be
rivetted and secured on the outside of the Boiler Front and it does not necessitate
the Boiler Front being flanged And the small end at b is fitted direct into a flanged
Combustion Plate But its gradual tapering form still allows of it being easily
removed and passed out through the hole in the Boiler front plate at a.
Figure 5 Sheet 1 Shows a gradual Tapering Cylindrical corrugated flue as formed
to form the Fire Box of a vertical Boiler By this gradual Tapering Form from a to b
it allows the steam generated on the upper part of each Corrugation to leave the
vicinity of the plate freely and rise upwards to the steam space of Boiler and its-
gradual Tapering Corrugated Form allows it to be readily removed when required.
This figure should have been shown with Tubes But which on reference to sheet 5
Figure 1 and 2 you will see the flats that are formed to secure same either by
flanges by rivetting or by being welded solid To the gradual Tapering Cylindrical
Corrugated Fire Box.
Figure 6 sheet 2 shows a gradual Tapering Cylindrical Corrugated or Sectional-
Flue with the back end or small end Flanged to suit the Fire box or combustion Box.
of a Marine Boiler and you will notice that through the back end at 6 being smaller
than the Front end that it enables it being passed through a hole the diameter of
which suits the large end a-making it an interchangeable Furnace..
I will now draw your attention to Figure 7 Sheet 2
Which shows a gradual
Tapering Corrugated Cylindrical Flue the back end of which is formed with a flange
at 6 and a projecting portion at which forms part of the combustion chamber or
Fire Box of a Marine Boiler should such be desirable or necessary This also in
diameter and size may be still smaller than the dotted lines c and c¹ which enables
it to be passed through the front plate of Boiler when required which causes it to be
an interchangeable flue.
Figure 8 Sheet 3 Shows a gradual Tapering Corrugated Cylindrical Flue The
large part at a being made to suit the Flange on the Front Plate of the Boiler and
the flanges at b fitted together with an Adamson ring between them so has to
strengthen the Flue when connected together. But which are still Interchangeable or™
easily taken out through Hole in front Plate of Boiler If you will refer again to
Figure 2 Sheet 4 you will notice that there is a Flat formed on opposite sides of the
Flue by pressing out the Corrugations untill a flat portion is formed to suit either a
galloway Tube being rivetted or welded thereto, these said flats being formed where
desired in the gradual Tapering Cylindrical corrugated flues constructed as shown in
the drawings submitted herewith to form the flues of Lancashire Cornish and Vertical-
Boilers,

page_text: Having now described the nature of my invention and in what manner the same
is to be performed I declare that what I claim is:
1st. The construction of gradual Tapering Corrugated Cylindrical flues as shown
upon the drawings submitted herewith with the flanges as shown.
THERE CONSTRUCTION WITH SUCH FLANGES.
5
2d. By the Forming of annular or other sectional corrugations in a gradual
Tapering Cylindrical plain plate Cylinder after being welded such formation or
Corrugations being done by Hydraulic pressure derived from the pump or pumps
Accumulator or Accumulators acting through Fluid or upon Fluid-and thence upon
the rams or ram of an Hydraulic Cylinder or Cylinders Which then acts and applys 1
the pressure to press one corrugated Roller against another Corrugated roller or
towards one another.
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CORRUGATED FLUES WITH THE FLANGES
AS SHOWN ON DRAWINGS.
3d. By the Formation of the Corrugations in a gradual Tapering Cylindrical plain 1
plate cylinder after being welded by Hydraulic pressure derived from pumps and
accumulator acting upon the rams or ram by compressed Fluid in an Hydraulic
Cylinder or Cylinders which then acts and applys pressure to press One Gradual
Corrugated Roller against or towards another corrugated Roller.
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CORRUGATED CYLINDRICAL FLUES 2
WITH THE FLANGES AS SHOWN.
4th. By the forming of the Corrugations in a gradual Tapering Cylindrical plain
plate Cylinder after being welded by Hydraulic pressure derived from Pumps and
Accumulators acting upon a Ram or Rams of an Hydraulic Cylinder and Cylinders.
which then applys the pressure or movement of the rams either through toggle Bars 2
or through or by Hydraulic pressure acting upon the ram or rams of an Hydraulic
Cylinder or Cylinders in a corrugating Mill with stops formed to the housings or
Cylinders Such stops to mean stops that are fast to the Housings of a Corrugated
Mill to prevent The Corrugated Rollers bearing harder than is necessary upon the
Tapering Cylindrical Plain plate Cylinder than is required to form the corrugations 3
properly.
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CYLINDRICAL CORRUGATED FLUES
WITH ANNULAR OR OTHER SECTIONAL CORRUGATIONS WITH THE FLANGES
AS SHOWN ON DRAWINGS.
5. By the construction and formation of the corrugations in a gradual Tapering a
Cylindrical plain plate Cylinder after being welded by Hydraulic pressure derived from
a pump or pump and accumulator acting upon the ram or rams of an Hydraulic
Cylinder or Cylinders of an Hydraulic press, which then applys the pressure to press
a corrugated die against or towards another Corrugated die to form a gradual tapering
Cylindrical Corrugated Flue or to form part of a gradual Tapering Cylindrical 4
Corrugated Flue or Fire Box,
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CYLINDRICAL CORRUGATED FLUES
WITH ANNULAR OR OTHER SECTIONAL CORRUGATIONS WITH THE FLANGES AS SHOWN.
6th. The Formation of the Corrugations in a gradual Tapering cylindrical plain
plate or part of a Cylindrical plain plate before it is welded together.
The formation of such corrugations to form a gradual tapering Cylindrical Flue
such formation being caused by Hydraulic pressure acting upon a ram or rams of an
Hadraulic Cylinder or Cylinders of an Hydraulic press which then annlies the pro
1

page_text: to press and move a corrugated die or dies against or towards another Corrugated
die.
THE CONSTRUCTION OF FLATS ON SUCH GRADUAL TAPERING CYLINDRICAL CORRUGATED
FLUES OF AN ANNULAR OR OTHER SECTION WITH FLANGES AS SHOWN.
7th. By the formation of flats or plain portions being formed by Hydraulic
pressure in, amongst, or out of, the corrugations of a gradual Tapering Cylindrical
Corrugated Flue Or the formation of such plain parts or flats in part or parts of a
Cylindrical Taper plain plate Cylinder before the parts are welded together.
8th. By the formation of Flat parts in a gradual tapering plain plate Cylinder after
it is welded by Hydraulic pressure derived from pumps and accumulators acting upon
the ram or rams of an Hydraulic Press. Cylinder or Cylinders which then applies
the pressure to press a die against a die or towards a die with the object of forming
part of a gradual Tapering Cylindrical Corrugated Fire Box.
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CORRUGATED CYLINDRICAL FLUES
WITH THE FLANGES AS SHOWN ON DRAWINGS BUT WHOSE CORRUGATIONS ARE OF AN
ANNULAR OR OTHER SECTION.
9th. By the formation of such flanges and attachments as shown on the drawings
submitted herewith being formed on and to or attached as shown to such gradual
Tapering Cylindrical Corrugated Flues or Fire Boxes either before or after being
welded into a Tapering Cylindrical Form By direct or indirect pressure-derived from
pressure applied to Hydraulic Ram or Rams."
THE CONSTRUCTION OF SUCH GRADUAL TAPERING CORRUGATED CYLINDRICAL FLUES
OF ANNULAR OR OTHER SECTION,
By the formation of flanges as shown in the drawings submitted herewith in which
the power is obtained from or by worm wheels and screw worms and the revolving
motion of machine tables or table enabling or causing such a gradual Tapering
Cylindrical corrugated Flue to revolve to allow it or cause it to be flanged.
Dated this day 18th of September 1897.