IMPROVEMENTS IN STEAM BOILERS "
Year: 1883

page_text: LETTERS PATENT to Thomas Carter of Belle Vue Park Tunstall Road
Sunderland in the County of Durham Superintendent Engineer for an
Invention of "IMPROVEMENTS IN STEAM BOILERS "
PROVISIONAL SPECIFICATION left by the said Thomas Carter at the Office
of the Commissioners of Patents on the 16th June 1883.
THOMAS CARTER of Belle Vue Park Tunstall Road Sunderland in the County of
Durham Superintendent Engineer. "IMPROVEMENTS IN STEAM BOILERS."
This invention relates to improvements in horizontal marine or other steam
boilers the chief objects being to procure a large heating surface and high pressure,
to facilitate the cleaning and repairing of any part and to allow of their standing
on a small base.
For this purpose I form a steam boiler of two (or it might be more) cylinders
placed one above the other at a short distance apart. The upper part of the bottom
cylinder I connect to the lower part of the top cylinder by tapering tubes or
passages the smaller ends of which are uppermost. The two cylinders thus form
one boiler capable of sustaining a high pressure-One or more horizontal furnace
Bues are carried lengthwise through the bottom cylinder At one end a combustion
chamber or fire box is formed the back and sides of which consist of a framework
of malleable or cast iron lined with fire brick or other suitable material.
The top
of the fire box is formed by a projection or pocket standing out from the upper
part of the end of the top cylinder. The lower 'part of the top cylinder below this
projection contains a number of tubes which pass through it horizontally from
one end to the other-The space between the bottom of the one cylinder and the
top of the other is closed in at the sides by a framework of malleable or cast iron
lined with fire brick or other suitable material-two side flues are thus formed
between the cylinders.-At the fire box end a perforated plate is also fitted between
the two cylinders. The flame passes from the combustion or fire box through the
perforations in this plate into the side flues above mentioned and so to a smoke
box at the opposite end of the top cylinder and also passes to this smoke box
Price dl

page_text: through the several tubes which are carried through the cylinder and from the
smoke box they pass away to a funnel or chimney.
In place of the top of the fire box or combustion chamber being formed by a
pocket or projection from the end of the upper part of the upper cylinder it may
be formed by a similar projection from the lower part of this cylinder-in this case
the flame from the fire box or combustion chamber would pass away through the
side flues only to the smoke box at the opposite end and from the smoke box be
led back through numerous tubes passing longitudinally through the upper cylinder
into another smoke box and from there to the chimney. The top of the first
mentioned smake box might in this case be formed by a pocket or projection from
the top of the upper cylinder.
In a similar way to that above described single cylinder boilers may be made
with a furnace flue or flues passing through them horizontally opening at one end
into a fire box or combustion chamber the top of which is formed by a pocket or
projection from the upper part of this end of the boiler and from the fire box the
flame may pass through numerous small tubes led horizontally through the boiler
to a smoke box at the opposite end and so to the chimney.
Boilers constructed in this way may be placed side by side or end to end the
smoke box ends of the boilers being placed one against the other. When the boilers
are placed end to end the fire boxes can be arranged either double or single as
preferred.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Carter in the Great Seal Patent Office on the
14th December 1883.
THOMAS CARTER of Belle Vue Park Tunstall Road Sunderland in the County of
Durham Superintendant Engineer "IMPROVEMENTS IN STEAM BOILERS "
This invention relates to improvements in horizontal marine or other steam
boilers the chief objects being to procure a large heating surface and high pressure
to facilitate the cleaning and repairing of any part and to allow of their standing
on a small base.
For this purpose I form a steam boiler of two (or it might be more) cylinders
placed one above the other at a short distance apart. The upper part of the
bottom cylinder I connect to the lower part of the top cylinder by tubes or
passages. The two cylinders thus form one boiler capable of sustaining a high
pressure.
One or more horizontal furnace flues are carried lengthwise through the bottom
cylinder. At one end a combustion chamber or fire box is formed the back and
sides of which consist of a framework of malleable or cast iron lined with fire brick
or other suitable material. The lower part of the top cylinder below the top of
the fire box contains a number of tubes which pass through it horizontally from
one end to the other. The space between the bottom of the one cylinder and the
top of the other is closed in at the sides by a framework of malleable or cast iron
lined with fire brick or other suitable material-two side flues are thus formed
between the cylinders. A perforated plate is also fitted between the two cylinders.
The flame passes from the combustion chamber or fire box into the side flues above
mentioned and through the perforations in the plate to a smoke box at the opposite
end of the top cylinder and the flame also passes to this smoke box through the
several tubes which are carried through this cylinder and from the smoke box they
pass away to a funnel or chimney.
Figure 1 is an end elevation partly in section and Figure 2 is a longitudinal
section of a single return horizontal multitubular boiler of this construction. The
boiler consists of two or it might be more cylinders A and B placed one above the
other; the two cylinders are connected together by one or more cones and four
or more tubes D thus forming the two cylinders into one boiler capable of sustaining
a high pressure. The bottom cylinder is fitted with one or more furnaces E as
preferred. The flame from the furnace enters a fire box or combustion chamber F
the back and sides of which consist of a frame work of malleable or cast iron lined
with fire brick or other suitable material. The top cylinder contains a number of
tubes H carried by the tube plates. At the end between the two cylinders is
fitted a perforated plate I through which the flame passes from the flues J and
through tubes H to the smoke box K thereby a large area of heating surface is
provided. The sides of the flues J consist of a framework of malleable or cast irou
lined with brick work or other suitable material, these flues are easily accessible for
cleaning and easily removed for repairs.
The top of the fire box or combustion chamber may be formed on a level with
the lower part of this cylinder-in this case the flame from the fire box or com-
bustion chamber would pass away through the side flues only (or through these
and tubes which may be provided in the lower cylinder) to the smoke box at the
opposite end and from the smoke box be led back through numerous tubes passing
longitudinally through the upper cylinder into another sinoke box and from there
to the chimney.

page_text: Figure 3 is an end elevation partly in section and Figure 4 is a longitudinal
section of a double return horizontal multitubular boiler constructed as above set
forth. The boiler consists of two or it might be more cylinders A and B connected
together as above described. The flame passes from the furnaces E into fire
box F then through the flues J and the lower tubes H into another chamber .. and
then returns again through the upper tubes H into the sinoke box K.
Having now described the nature of the improvements in steam boilers and
illustrated by drawings the manner in which to carry them into effect I would
have it understood that I claim :-
First-The construction of marine or other steam boilers as herein described
and illustrated in Figures 1 and 2 for a single return boiler.
Second-The construction of marine or other steam boilers as herein described
and illustrated in Figures 3 and 4 for a double return boiler.
In witness whereof I the said Thomas Carter have hereunto set my hand and
seal this Twelvth day of December in the year of our Lord One thousand eight
hundred and eighty three.