Multitubular Vertical Boilers.
Year: 1889

page_text: Date of Application, 12th Nov., 1889
Complete Specification Left, 11th Aug., 1890--Accepted, 13th Sept., 1890
PROVISIONAL SPECIFICATION.
Multitubular Vertical Boilers.
TIMOTHY JOHN SULLIVAN (Boiler-maker) 15 Forth Street, Wallsend on Tyne
Northumberland England do hereby declare the nature of this invention to be as
follows:-
The boiler is of the ordinary cylindrical shape with an internal fire-box with water
space around. The fire-box top is constructed of an inverted V shape thus (^) each
of the flats forming a tube plato, into which tubes are fixed in the ordinary way, the
other ends of the tubes being fixed into a V shaped combustion chamber one on eithor
side, the combustion chambers tending towards each other thus <) with a sufficient
water space between the points to allow room for a man to pass along (or a boy in small
boilers).
The sides of the boiler are cut away in way of the combustion chambers and fitted
with doors so as to allow easy access to the tubes. The upper flats of these combustion
chambers are also tube plates, tubes from these plates tending towards an internal
triangular shaped upper chamber or smoke box the point being downwards.
The two lower sides forming tube plates for the reception of the top ends of the
tubes from the upper sides of the combustion chambers. One end of this internal
triangular chamber is closed and allows a water space between it and the shell of the
boiler to which it is securely stayed.
The other end passes through the boiler shell and either carries the chimney outside
of this opening or the opening is closed by a door and the chimney carried through
the crown of the chamber, passing out through the top of the boiler.
It will thus he seen that there are four nests of tubes; two from the fire-box crown,
one on either side, to the side combustion chambers; and the other two, one from
either side combustion chamber to the lower sides of the triangular internal upper
chamber. Thus forming in cross section the shape of a cross X.
The front of the boiler shell and the fire-box are lowered down in the shape of an
are thus ( under the fire-door, to allow a large water space, a mud-hole door
being cut through the shell directly under the fire-door to enable easy removal of all
dirt which may accumulate.
Ample room for removal of ashes being provided on each side.
COMPLETE SPECIFICATION.
Multitubular Vertical Boilers.
I, TIMOTHY JOHN SULLIVAN, Boiler-maker of 15 Fourth Street, Wallsend-on-Tyne,
Northumberland 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 :-
My invention relates to multitubular vertical boilers. The boiler may be of the
ordinary cylindrical shape with an internal fire box with water spaces around same.
The fire box top is constructed of an inverted V-shape each of the flats forming a tube
plate into which tubes are fixed in the ordinary way the other ends of the tubes being
fixed into V-shaped combustion chambers one on either side tending towards each
other with a sufficient water space between the points to allow room for a man (or a
boy in the case of small boilers) to pass along.
The sides of the boiler opposite the combustion chambers are cut away and provided
with doors so as to allow easy access to the tubes.

page_text: The upper flats of the combustion chambers are also tube plates the tubes therefrom
tending towards an internal triangular-shaped chamber or smoke box, the point being
downwards, the two lower sides thereof formning tube plates for the reception of the
top ends of the tubes from the upper sides of the combustion chambers. One end of
the internal triangular-shaped chamber is closed so as to allow a water space between
it and the shell of the boiler to which it is securely stayed, the other end passing to
an opening in the boiler shell so as to carry a chimney at the side of the boiler or
the opening may be closed by a door in which case the chimney may lead from the
crown of the chamber to pass out at the top of the boiler. It will thus be seen that
there are four nests of tubes, two from the fire box crown one on either side, to tho
side combustion chambers and the other two one from either side combustion chamber
to the lower sides of the triangular internal upper chamber, thus forming in cross
section tho shape of the letter X. The front of the boiler shell and the fire box aro
lowered down in the shape of an are under the fire-door to allow a large water space a
mud hole door being cut through the shell directly under the fire door to facilitate tho
removal of all dirt that may accumulate, ample room for the removal of ashes being
provided on either side.
I will now fully describe my invention with reference to the accompanying drawings
in which
Figs. 1 and 2 are sectional elevations (at right angles to one another) of my improved
multitubular vertical boiler,
Figs. 3, 4 and 5 being respectively cross sections on lines a x, y y and w w in
Figs. 1, 2 and 6.
Fig. 6 is a front elevation hereinafter described.
Referring to the Figs. a is the fire box constructed of an inverted V-shape each of
the flats a on opposite sides of the fire box forming a tube plate into which tubes b
are fixed in the ordinary way, the other or upper ends of these tubes being fixed into
the lower flats c¹ of the V-shaped combustion chambers c situate one at either side
of the boiler and tending towards each other with a sufficient water space between the
points of the chambers e to allow room for a man (or a boy in the case of small
boilers) entering through manhole g to pass along between the four nests of tubes.
The sides of the boiler opposite the combustion chambers c are cut away and provided
with hinged doors d thus allowing easy access to one end of each of the four nests of
tubes; the upper flats c³ of the combustion chambers c are also tube plates, the tubes e
tending towards an internal triangular shaped chamber or smoke box f, the point f
of which is directed downwards while the two lower sides g form tube plates for the
reception of the upper ends of the tubes e from the upper sides of the chambers c.
One end g¹ of the internal triangular-shaped chamber is closed so as to allow a water
space S between it and the shell of the boiler to which it is securely stayed the other
end g² passing to an opening in the boiler shell so as to carry a chimney at the side
of the boiler (as shown in dotted lines at h in Fig. 2) or the opening may be closed
by a door in which case the chimney may lead from the crown of the chamber ƒ to
pass out at the top of the boiler as shown in Figs. 1 and 2.
It will thus be seen that there are four nests of tubes, viz. two, bb, leading from the
fire box crowns a¹, one on either side to the bottom plates c' of the side combustion
chambers c and two, e e, one from each crown plato c³ of the side combustion chambers c
leading to the bottom plates y of the triangular internal upper chamber f forming as
shown in Fig. 1 the shape of the letter X
The side combustion chambers c may either be formed with end plates as shown
in Figs. 2, 3 and 4 or the top and bottom flats of these chambers may be extended
in width and flanged over at the edges so as to be rivetted direct to the shell of tho
boiler without the aid of separate end plates.
The doors d d' of the chambers c and may be lined internally with firebrick or
equivalent material, the sides of the chambers c beyond the door being in like manner
lined so as to prevent as much as possible loss of heat.
The front of the boiler shell and firebox are lowered (as shown in Figs. 2 and 6) in
the shape of an are so as to obtain a large water space n under the firedoor m. A mud

page_text: hole doorway n³ is then cut through the shell directly under the firedoor which
facilitates the removal of the dirt or scale which naturally tends to accumulate here
thus reducing the risk of accidents which not infrequently occur through the choking
of this water space.
It will be seen from the above described method of constructing inultitubular vertical
boilers that easy access is afforded to every part of the boiler for cleaning scaling and
repairing purposes and that the inclination and disposition of the tubes not only tends
to prevent any accumulation therein of soot, but the latter has a constant tendency to
gravitate towards the firegrate for consumption. Easy circulation, freedom from
deadwater, rapid evaporation and equal expansion of the heated parts are likewise
provided for while by means of a pipe entering at or about the firedoor and passing
thence through the firebox to the side combustion chambers, heated air may be readily
supplied to these chambers (in which the hydro-carbon gases are ignited) thus
economising and improving the combustion of the fuel.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
I claim is:
1. A multitubular vertical boiler in which the crown of the internal firebox is formed
of an inverted V-shape the flats of which form tube plates which are connected by
tubes to the lower flats or tube plates of V-shaped lateral combustion chambers pro-
vided with doors the upper flats or tube plates of which are connected by tubes to the
lower sides or tube plates of an internal triangular-shaped smoke box or chamber
substantially as herein set forth.
2. A multitubular vertical boiler in which four nests of inclined tubes connect two
lateral triangular-shaped combustion chambers with a lower A-shaped firebox and an
upper V-shaped internal smoke box or chamber, so as to form in sectional elevation
an X-shaped water space access to which and to the fire chambers is obtained by
doors the several parts heing constructed and arranged with respect to one another
substantially as and for the purposes herein set forth.
3. In multitubular vertical boilers increasing the water space between the firedoor
and the bottom of the firebox chamber by lowering the front of the boiler and
fire-box shells substantially in the manner and for the purposes herein set forth.
DIL
A 1800
A. CRAWHALL CHAPMAN,
3, St. Nicholas' Buildings, Newcastle-on-Tyne, Patent Agent for Applicant.