Improvements in the Construction of Steam Boilers, and their Adjuncts
Year: 1895

page_text: Date of Application, 30th Apr 1895
Complete Specification Left, 28th Feb, 1896-Accepted, 18th Apr 1896
PROVISIONAL SPECIFICATION
Improvements in the Construction of Steam Boilers, and their
Adjuncts
FREDERICK DUMELLA ROSE, Consulting and Electrical Engineer, Box 14
Royal Exchange, Manchester, Lancashire, do hereby declare the nature of this
invention to be as follows
The cbjects of my improvements are to give greater strength to resist explosion,
and collapse, and to retain the heated gases longer within sectional and all internal
fired boilers
To effect my improvements, I construct a hollow annular circular ring, of any
suitable metal, with one or more suitable inlets at the bottom, and one or more
suitable outlets at the top, and with wings and flanges on them so that they can be
rivetted, or welded forming a continuous fire box, flue, and combustion chamber, of
all internal fired shell boilers
To form sectional boilers, the hollow annular circular rings I construct without
wings or flanges, so that each ring forms a separate boiler, and are made to touch
each other forming a continuous internal fired sectional boiler of any length and
diameter, each ring being suitably attached top, and bottom, to a suitable steam
pipe, and to a suitable feed pipe
To retain the heated gases longer within boilers such as two flued, Cornish,
single ended marine, vertical, and locomotive, the fire boxes flues and combustion
chambers, I prefer to make circular and continuous from end to end, the circular
combustion chamber being at the back end, to which the return tubes are attached,
and from which they radiate circumferentially top and bottom through the water
space to the front end plate, to which they are also attached, to prevent the gases
escaping from the circular combustion chamber, I block up the end with fire clay,
o other suitable means
Double ended marine boilers I construct in the same manner, it is obvious the
circular combustion chamber would be in the center, and the return tubes radiate
circumferentially right and left to their respective end plates
I do not confine myself to the above method, as the circular combustion chamber
may not be attached to the back end plate, but may stop short about one ring, and
may have a circular flat end plate securely rivetted to it, and then securely bolted
and stayed to the back end plate of the boiler, and the return tubes radiate
from the circular flat end plate of the combustion chamber, as well as circum-
ferentially
may
The form of the annular hollow ring may be varied, excentric, corrugated,
serrated, in two or more pieces to fit present boilers, may be used as superheaters,
economisers, or may have cross tubes in them, cold air may pass through them
forming smoke consumers, may be made in steel, malleable iron, or cast on, and
may be used as strengthening rings to the shells of boilers to prevent explosions,
and bulging in transit, as kitchen or other boilers, as condensers, or for heating
purposes
تبع
201 1
CAI 1005
FREDERICK DUMELLA ROSE,
Box 14, Royal Exchange, Manche ter,
Consulting and Llectrical Engineer

page_text: Improvements in the Construction of Steam Boilers, and their
Adjuncts
I, FREDLRICK DUMELLA ROSE, of Box 14, Royal Exchange, Manchester in
the County of Lancaster, Consulting and Electrical Engineer, 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 is designed to give greater strength to the flues and other parts
of steam boilers to resist explosion or collapse and to increase the heating power
of the boiler by retaining the heated gases longer within the structure of the
boiler
It consists essentially in constructing the flues of internally fired boilers and
other parts of sectional boilers of hollow ings and in the combination with the
flues of boilers of a circular combustion chamber at the end of the flue and a
number of return tubes radiating therefrom and returning to the front end of the
boilei
The invention is applicable to Lancashire, Cornish, vertical, locomotive, maine,
sectional or other forms of steam boilers It will be fully described with reference
to the accompanying diawings
Fig sectional elevation of flue of Lancashire or Cornish boiler
Fig 1A section of fire box of Lancashire, Cornish, marine or other boileı
shewing a modification
Fig 2 sectional elevation of Lancashire or Cornish boiler
Fig 3 sectional elevation of vertical boiler
Fig 4 sectional elevation of locomotive boiler
Fig 5 sectional elevation of locomotive boiler showing another modification
Fig 6 sectional elevation of marine boile
Fig 7 sectional elevation of one form of sectional boiler
Fig 8 sectional elevation of another form of sectional boiler
Fig 9 side elevation of same
I construct the flues of a number of hollow rings A with one or more inlets a at
the bottom and one or more outlets a¹ at the top Each of these hollow rings is
constructed with side flanges a" by which they may be riveted or welded together
to form a continuous flue for internally fired boilers
For sectional boilers the hollow rings A each form a separate section or boiler
and may be placed close together to form a continuous flue or may be placed at
some distance apart to allow the heated gases and products of combustion to pass
between or around them In this construction the hollow rings are fitted with
connecting tubes B B¹ top and bottom which are attached to longitudinal pipes a
steam pipe C at the top and a feed pipe D at the bottom or may be attached to
similar intermediate hollow 11ngs connected by longitudinal steam and feed pipes
In internally fited boilers I fix a cylindrical combustion chamber E at the end
of the flue and to retain the heated gases longer within the structure of the boiler
I connect thereto a number of return tubes F which radiate therefrom ind return
to the front plate through the water space of the boiler and deliver into a smoke
box afhxed to the front of the boiler
In Fig 1 is shown a flue of an ordinary Lancash re or Cornish boiler con-
structed of a number of the hollow ring. A secured together by the flauges all
which are riveted one to the other
And in Fig 1 is shewn a modified con truction of fire box which may be applied
to the flue of any boile A hollow strengthening ring without flanges is pressed
into position and connected top and bottom with the furnace by a tube or nipple b
passing through both and through which th water would circulate

page_text: In Fig 2 is shown in section a Lancashire oi Cornish boiler with both parts of
my invention applied thereto The internal flue is constructed of a number of
hollow rings A riveted together At the back of the flue I construct a circular
conical or cylindrical combustion chamber E from which radiate a number of
return tubes F which cairy the heated gases back through the water space to the
front of the boiler The return tubes F may be placed above and below the flues
and are attached to and deliver into a smoke box G constructed at the front of the
boiler The heated gases will pass from the furnace and combustion chamber E
into the return tubes F and will pass into the smoke box G at front and will pass
down flues below or along the sides of the boiler or tubes H may carry some of the
gases back from the smoke box G to a flue or chamber at the back of the boiler
whence they pass to the economiser and chimney
It de ned the return tubes F may all be placed above the internal flues The
back end plate K of the boiler is made without an opening behind the flues and is
consequently much stronger and so may be made thinner The plate may be
protected by fire brick screen or disc k
In Fig 3 is shown a section of a vertical boiler The internal flue or combustion
chamber is con tructed of hollow rings A riveted together by the flanges all The
top of the combustion chamber is closed by a dome shaped or conical end from
which radiate the return tubes F At the bottom of the boiler below the grate,
I construct a smoke box G and the return tubes F pass down from the top of the
combustion chamber by the sides thereof and deliver into the smoke box G The
smoke box G is connected with a flue G and funnel or chimney G¹ The flue Gr¹l
preferably embraces about two thirds of the cucumference of the boiler and
prevents radiation therefrom
In Fig 4 is shown in section one form in which I construct a locomotive boiler
The bre box is con tiucted of a number of hollow rings A and an internal flue of
similar hollow ings is also provided in substitution for the tubes usually employed
At the end of the boiler I form a conical circular or cylindrical combustion
chamber from which indiate a number of retuin tubes F which carry the heated
gases and products of combustion back through the water space to the front of the
boiler where I have erected a smoke box G and smoke stick or funnel G¹
end plate K is made without holes and is protected by a fe buck plate oi
screen k
The
In Fig 5 is shown in section another form in which I construct a locomotive
boiler This differs from that described with reference to Fig 4 that there is a
smoke box G and funnel G¹ at the end of the boiler in the usual place in addition
to the smoke box G at the front end of the boiler and additional tubes II cay the
gases back again through the water or steam space from the smoke box G to the
smoke box G
In the boilers of locomotive and portable engines the fire box instead of being of
greater diameter than the flue may be of the same diameter, the flue being
continuous and of the same diameter from end to end as shown in Fig 2
In Fig 6 is shown in section a double ended marine boiler The internal flues
are constructed of hollow rings A and at the back of the furnaces I place a circulai
or cylindrical combustion chamber E fiom which indiate a number of return
tubes F The tubes F return from the central combustion chamber E to both ends
of the boiler where smoke boxes G and stack are constructed I prefer the flue to
run from end to end of the boiler but it may be divided in the centic or the two
flues kept separate by a division plate of metal or five buck
A single ended marine boiler may be made in the same way with a cucului or
cylindrical combustion chamber at the back and the return tubes radiating there-
fiom and extending to the front plate
In either single or double ended marine boilers the combustion chamber may if
desired be made of the same diameter as shown or of a greater diameter than the
fire box if desired
In any of the types of steam boiler illustrated in the preceding drawings it is to

page_text: be understood that either parts of my invention may be applied without the other
that is to say the furnaces and internal flues may be constructed of the hollow
rings A without employing the combustion chamber E and return tubes F, or the
combustion chamber É and return tubes F may be used without employing the
hollow rings A to form the flues and fire box Or one two or more of the hollow
rings A may be employed at intervals in the internal flues either with or without
the return tubes F, and such rings may be constructed either with or without
flange and secured in position by any suitable means
In Fig 7 is shown partly in section a sectional steam boiler built up of a number of
the hollow rings A These hollow rings are formed without flanges all and are fitted
with connecting tubes B B' The rings A are placed side by side and made to
touch each other forming a continuous internal fired sectional boiler of any length
and diameter Each hollow ring A is attached at the top by the tube B to a steam
pipe C running longitudinally of the boiler and at the bottom to a longitudinal
feed pipe D
I he hollow rings may be clamped together by any suitable means if
found desirable
Figs 8 and 9 illustrate another type of sectional steam boiler constructed with a
number of the hollow rings A superimposed Two parallel row of the hollow
rings A are placed below with another row or set placed above, the lower sets are
connected to the upper set by the tubes B and each lower set to a longitudinal
feed pipe D and the upper set to a longitudinal steam pipe C Any of the hollow
11ngs may have internal cross tubes such as A¹ These hollow lings are set some
distance to allow the heated gases to pass around them on they may be set to touch
as in Fig 7 01 some, those for instance in which the fire bars are fixed may touch
and the others be set apart A sectional steam boiler of any required length may
thus be formed by adding to the number of hollow rings in each set
It will be evident that the hollow rings A may be placed in any suitable position
relative to each other and be connected together by any arrangement of connecting
tubes that may be found suitable or desirable
The invention is not limited to any of the illustrated types or designs of boiler
for instance the combustion chamber E need not be attached to the back end plate
but may stop short about the width of one ring and may have a circular flat plate
securely riveted to it and securely bolted and stayed to the back end plac of the
boiler and the return tubes may radiate from such circular end plate of the
combustion chamber as well as from the cncumference
The form of the hollow rings may also be varied, they may be eccentric,
corrugated, seriated, in two or moic pieces to fit present boilers, may be used as
superbeaters, economisers or may have cross tubes in them, cold an may pass
through them formning smoke consumers, they may be made in steel, malleable iron,
or cast iron, and may be used as strengthening ings to the shells of boilers to
prevent explosions, and bulging in transit, as kitchen or other boilers as condensers,
or for heating purposes
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1 A flue for internally fired steam boilers constructed with one or more hollow
rings provided with flanges by which they are attached to each other or to the
ordinary rings of the flue substantially as described
2 The combination with the flue of a steam boiler of a hollow strengthening
ring affixed to the interior of the flue and connected to it by one or more openings
top and bottom substantially as described
3 A sectional steam boiler constructed of one or more hollow ings connected
to longitudinal steam and feed pipes by connecting tubes substantially as
described
4 In an internally fired steam boiler the combination with the flue-constructed
either with or without hollow rings-of a conical, circular, or cylindrical

page_text: combustion chamber and a number of return tubes radiating therefrom and connected
to the front plate of the boiler substantially as described and shown
5 A steam boiler constructed substantially as described and shown with.
reference to either of the figs of the drawings
Dated this 27th day of February 1896
WM P THOMPSON & Co,
6, Bank Street, Manchester, Patent Agents