IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR HEATING WATER
Year: 1876

page_text: LETTERS PATENT to Henry Arthur Potter, of South Molton Street, in the
County of Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF BOILERS FOR HEATING WATER."
Sealed the 4th August 1876, and dated the 18th May 1876.
PROVISIONAL SPECIFICATION left by the said Henry Arthur Potter at the
Office of the Commissioners of Patents on the 18th May 1876.
HENRY ARTHUR POTTER, of South Molton Street, in the County of Middlesex,
Engineer. "IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR HEATING
WATER."
This Invention has for its object to produce a boiler for heating water for
domestic or conservatory purposes, and consists mainly in the peculiar construction
or arrangement of the flue which is made to pass through the upper water way of
the boiler, and communicates with the fire-box by a vertical passage, by which
means a great increase of heating surface is obtained. The water space surrounds
the fire-box on the four sides and on the top, and the fluo is arranged to run from
front to back of the upper part of the boiler, which is provided with a soot door in
front for the convenience of sweeping, but the flue may if necessary run in any
other direction in either a straight or curved, horizontal, or inclined line, and it
may be either of elliptical or oblong, or circular, or of any other convenient and
suitable section. It may communicate with the fire-box by either one or more
vertical flues or passages, which may be either circular or any other shape in
section. This arrangement of flues may be applied either to a circular boiler, or to
an octagon, square, or any other shaped boiler, either vertical or horizontal, as may
be preferred. The boiler is provided with the requisite water flow pipe as well as
the return pipe, so that a proper circulation of the water may be maintained.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Arthur Potter in the Great Seal Patent Office on the
18th November 1870.
HENRY ARTHUR POTTER, of South Molton Street, in the County of Middlesex,
Engineer. "IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR HEATING
WATER."
This Invention has for its object to produce a boiler for heating water for
domestic or conservatory purposes, and consists mainly in the peculiar construction

page_text: or arrangement of the flue, which is. made to pass through the upper water way of
the boiler and communicates with the fire-box by a vertical passage, by which
means a great increase of heating surface is obtained. The water space surrounds
the fire-box on the four sides and on the top. The main flue is arranged to run
from front to back of the upper part of the boiler, and is provided with a soot door
in front for the convenience of sweeping the flue. But the flue may if necessary
run in any other direction in either a straight or curved, horizontal, or inclined
line, and it may be either of elliptical, or oblong, or circular, or of any other
convenient and suitable section. The flue may be made to communicate with the
fire-box either by one or more vertical flues or passages, which may be either
circular or any other shape in section. This arrangement of flues may be applied
either to a circular boiler or to an octagonal, square, or any other shaped boiler,
either vertical or horizontal, as may be preferred. The boiler is provided with the
requisite water flow pipe as well as the return pipo, so that a proper circulation of
the water may be maintained.
In the accompanying Drawing Fig. 1 is a front elevation of the apparatus.
Fig. 2 is a side clevation, and Fig. 3 is a plan view of the saine.
Fig. 4 is a vertical section of the boiler and fire-place taken in the line A, B,
of Fig. 2, and Fig. 5 is another vertical section taken in the line C, D, of Fig. 1.
Fig. 6 is a horizontal section taken through the main flue in the line E, F, of Fig. 5.
The boiler a, a, is made of a cylindrical form, and is supported upon an octagonal
foundation b, b, which forms the ash-pit, and is provided with a door b₁ so that
the ashes may be removed therefrom when required. The foundation b also
supports the fire-grate c, on which the fuel is placed. The fire-box d is surrounded
by the cylindrical water space a', and is fed with fuel through an opening ² above,
a furnace door being also provided at the lower part for the convenience of
lighting and stirring the fire. The heated gases from the fire-box & pass up the
short vertical flue e into the flat horizontal flue f, and from thence into the
chimney. Water is supplied to the water space a¹² through the inflow pipe g, and
after abstracting heat from the heated sides of the fire-box and the flues e and f
the hot water passes up through the outflow pipe h to the hot water pipes of the
conservatory. The horizontal fluc f is provided at one end with a soot door for
the purpose of cleaning the same and removing the soot from time to time when
required.
It will be understood from the foregoing description that if the ordinary hot
water pipes of a conservatory be connected with the inflow and outflow pipes g
and h, Fig. 5 of the boiler, there will be a continuous flow of water through the
boiler and pipes, and the conservatory or room will be heated thereby and kept at
an uniform temperature.
Having now described my Invention of "Improvements in the Construction of
Boilers for Heating Water," and having explained the manner of carrying the same
into effect, I claim as the Invention secured to me by Letters Patent as aforesaid
constructing hot water boilers as herein set forth, that is to say, with a fire-box
connected by a short vertical flue with a horizontal flue, all of which are surrounded
with water, which is made to flow constantly through the same, as and for the
purpose herein set forth.
In witness whereof, I, the said Henry Arthur Potter, have hereunto set my
hand and seal, the Seventeenth day of November, in the year of our Lord
One thousand eight hundred and seventy-six.