Improvements in Steam Generators.
Year: 1894

page_text: Improvements in Steam Generators.
I, ALBERT EDWARD JONES, of Fiume, Hungary, Engineer, do hereby declare
the nature of this invention to be as follows.-
The object of this invention is to improve the construction of boilers of the
water tube ty pe, mainly in respect of the water circulation and of the accessibility
of the internal parts for cleaning and repairs.
One of the principal features of my invention consists in the employment of
houzontal, or nearly horizontal, flues of rectangular section containing the greater
part of the water tubes. These borizontal flues are placed with their flat sides
inclined at an angle of about 45°. The water tubes are preferably straight, and
pass from one side of the rectangular flue to the opposite side, and said water tubes
are placed at right angles to the sides of the flue, to which they are attached, and
are cousequently themselves inclined at an angle of about 45°. It is advantageous
to arrange the tubes in rows, the tubes of each alternate row being at right angles
to the tubes of the intervening 10ws, regular open spaces being left for the due
passage of the hot gases, and for the introduction of brushes or other cleaning
appliances.
A furnace of circular or other convenient form is attached to one end of the
rectangular flue and the fminace and flue are suitably placed and fixed in an outer
shell, the connections therewith being made with bolts or studs in order that the
whole of the internal part, comprising the rectangular flue with the water tubes
and the furnace, can be taken out for examination, cleaning or repaus
The general principle of my invention is applicable to boilers for use in all
Situations, but I will hereinafter describe my improvemen s as applied to a boiler
adapted for use on a steamn launch or the like
In constructing a steam launch boiler according to my invention I provide a
In a small boiler it
square o rectangular flue made many convenient manner.
may be conveniently formed out of a single plate by welding and flanging, but in
boilers of larger dimensions it will be found more convenient to form the
rectangular flue by vetting together four flanged plates
Suitable holes are drilled in the flat sides of this square flue and tubes are
inserted and fixed in rows, the tubes in one row being at light angles to the tubes
in the adjacent row, producing a crossed or network appearance. The passage,
between the tubes besides allowing free passage for the hot gases, should also be
large enough to allow of the passage of a suitable we brush or other cleaning
device which may be passed along the whole length of the flue
The proportions and spacing of the tubes will be governed by the particular
circumstances of each case The tubes themselves will generally form the stays
to the large flat surfaces of the rectangular flue, but in cases where it is deemed
necessary, suitable stays or stay-tubes may be introduced at intervals
A round flanged fuinate with suitable fire grate is attached to the square or
rectangular flue by an intervening plate. The internal portion of the boiler,
consisting of the furnace, the square flue, and the fire grate are attached to the
outer shell by a circular joint and a square joint.
It will be observed that the
said joints are made with studs and nuts so that the internal part may be taken ont
for examination or repairs and replaced in position with a minimum expenditure of
time and labour.

page_text: A smoke box, a chunney, and other necessary and customary parts and fittings,
are provided. Water tubes are suitably arranged in the furnace to protect it from
excessive heat.
In a boiler constructed according to this invention no particular form of external
shell is essential, that form being adopted which is most suited to the situation and
conditions.
The tubes in the square flue, being straight, and passing through the sides of the
flue at right angles to the plate, they are very easily placed in position, or replaced
when required, the bigh angle of inclination of the tubes ensures a thorough
circulation of the water through them during the generation of steam.
It will be obvious that boilers may be constructed having rectangular flues with
water tubes in accordance with this invention, but having two or more of such
rectangular flues contained in one external shell.
Dated this 29th day of December 1894
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C, Agents for the Applicant.
J, ALBERT EDWARD JONES, of Fiume, in the Empire of Austria Hungary,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described aud ascertained in and by the
following statement
The object of this invention is to improve the construction of boilers of the
water tube type, mainly in respect of the water circulation and of the accessibility
of the internal parts for cleaning and repaus.
One of the puncipal features of my invention consists in the employment of
borizontal, or nearly horizontal, flues of rectangular section containing the greater
part of the water_tubes. These horizontal Hues are placed with their flat sides.
inclined at an angle of about 45°. The water tubes are preferably straight, and
pass from one side of the rectangular flue to the opposite side, and said water tubes
are placed at night augles to the sides of the flue, to which they are attached, and
are consequently themselves inclined at an angle of about 45°. It is advantageous
to, arrange the tubes in Lows, the tubes of each alternate row being at right angles
to the tubes of the intervening rows, regular open spaces being left for the due
passage of the hot gases, and for the introduction of brushes or other cleaning
appliances.
A furnace of circular or other convenient form is attached to one end of the
rectangular flue and the furnace and flue are suitably placed and fixed in an outer
shell, the connections therewith being made with bults on studs in order that the
whole of the internal part, comprising the rectangular flue with the water tubes
and the furnace, can be taken out for examination, cleaning, or repairs.
The general principle of my invention is applicable to boilers for use in all
situations, but for the purposes of the present invention I will hereinafter describe
the boiler represented in the accompanying drawing, in which
Figme 1 is a longitudinal section of a small boiler constructed according to my
invention, and suitable for use in a steam launch or picket boat.
Figure 2 a transverse section of the same and
Figures 3 and 4 are a side view and an end view respectively of a form of
rectangular flue specially applicable in certain cases.
In constructing a steam launch boiler according to my mvention I provide a
square or rectangular flue a made in any convenient manner. In a small boiler it
may be conveniently formed from a single plate by welding and Hanging, but in

page_text: boilers of larger dimensions it will be found more convenient to form the
rectangular flue by vetting together four flanged plates as shown in Figaros 3
aud 4
Suitable holes are drilled in the flat sides of this square flue and tubes bare
inserted and fixed in rows as shown, the tubes in the rows marked X being at right
angles to the tubes in the adjacent rows marked Y, producing in the sectional
view, Figure 2, a crossed or network appearance The passages c c between the
tubes besides allowing free passage for the hot gases, should also be large enough
to allow of the passage of a suitable wire brush or other cleaning device which
may be passed along the whole length of the flue.
The proportions and spacing of the tubes will be governed by the particular
circumstances of cach case. The tubes themselves will generally form the stays
to the large flat surfaces of the rectangular flue, but in cases where it is deemed
necessary, suitable stays on stay-tubes may be introduced at intervals.
e is a round flanged furnace with suitable fire grate f, attached to the square or
rectangular flue a by an intervening plate g. The internal portion of the boiler,
consisting of the furnace e, the square or rectangular flue a, and the fire giato f
are attached to the outer shell h by a circular joint and the square joint ). It will
be observed that the said joints and are made with studs and nuts so that the
internal part may be taken out for examination or repairs and replaced in position
with a minimum expenditure of time and labour
A smoke box, a chimney l, and other necessary or customary parts and
fittings, are provided. m maie water tubes suitably arranged in the furnace to
protect it from excessive heat.
In a boiler constructed according to this invention no particular form of external
shell is essential, that form being adopted which is most suited to the situation
and conditions.
The tubes in the square flue being straight, and passing through the sides of the
Blue at right angles to the plate, they are very easily placed in position, or
replaced when required, the high angle of inclination of the tubes ensures a
thorough circulation of the water through them during the generation of steam.
It will be obvious that boilers may be constructed having rectangular flues
with water tubes in accordance with this invention, but having two or more of such
rectangular flues contained in one external shell.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same 18 to be performed, 1 declare that what I
claim 15-
1. In a boiler or steam generator, the use of one or more horizontal flues of
rectangular cross-section, the flat sides thereof being inclined at a considerable
angle, and said flue or flues having lows or layers of water tubes at right angles to
said flat sides, substantially as described and illustrated in respect of the square or
rectangular fine a.
2. In a boiler or steam generator, the rectangular flue with its crossed and
inchined water tubes and attached furnace, combined with an outer shell by means
of a bolted or studded joint, substantially in the manner described and for the
purposes specified.
Dated this 7th day of September 1805
HASELTINE, LAKE & Co.,
45 Southampton Buildings, Loudon, W.C., Agents for the Applicant.