IMPROVEMENTS IN CHIMNEY POTS
Year: 1884

page_text: I, EDWIN SAMUEL ROMILLY, of 35, Southampton Buildings in the County of
Middlesex, Accountant, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN CHIMNEY POTS" to be as follows:-
My Invention relates to the earthenware or metal pots used for the terminals of
ordinary chimneys, and it has for its object a novel method of constructing such
chimney pots so that the upward draught of sinoke and heated air through them
is promoted, whilst down currents are prevented.
I take an ordinary cylindrical or more or less conical pot or tube which I fix
in the usual way upon the top of the chimney to which the Invention is to bo
applied.
I make the upper end of this pot conical the smaller end being uppermost, and
round it I fit and fix a second tubular pot or pipe, cylindrical or very slightly
conical, the lower edge of which rests and is fixed upon a ledge or flange formed
round tho inner pot at or below the point where the conical part of the latter
commences. An annular space wider above than below is thus formed round the
conical part of the inner pot, and into the lower part of this space I inake a
sufficient number of openings through the outer pot round its circumference these
openings being of any desired shape, but preferably triangular with their point
uppermost.
The outer pot or tube rises to a sufficient height above the top of the inner
conical one.
The action of the improved chimney pot is as follows:-Air or wind blowing
from any direction against the chimney pot enters the apertures into the lower
part of the annular space and is there diverted upwards round the inner conical
pot inducing an upward current through the latter and up the outer pot, thus
accelerating the upward draught. Should the escape of the smoke be temporarily
obstructed or a down current caused the smoke will escape through the apertureз
described rather than down the inner conical pot.
The improved chimney pot may be made of any suitable material, such as metal,
earthenware, or terra cotta, and it may be ornamented in any way desired.
D...Al

page_text: The inner and outer pots described may be formed of one piece, or the outer
one may be fitted and fixed over the inner one as first described, a ledge or support
being formed if necessary upon the latter to carry it, and an external or internal
flange or ring may be formed upon the lower edge of the outer pot to fit and be
attached to such ledge or support by cement, lead, pins or studs, or other
convenient means.
My Invention may be applied to chimneys of all kinds, as for instance house
chimneys, or the chimneys of marine or other boilers, or furnaces.
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page_text: I, EDWIN SAMUEL ROMILLY, of 35, Southampton Buildings, Middlesex,
Accountant do hereby declare the nature of my Invention for "IMPROVEMENTS
IN CHIMNEY POTS" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement and
accompanying Drawing:-
-
My Invention relates to the earthenware or metal pots used for the terminals of
ordinary chimneys. It has for its object a novel method of constructing such
chimney pots or terminals so that the upward draft of smoke and heated air
through them is promoted, whilst down currents are prevented.
In order to put my Invention in operation I take a cylindrical or more or less
conical pot or pipe of the kind ordinarily used, which I fix in the usual way to the
upper end of the chimney to which the Invention is to be applied. I make the
upper end of this pot or pipe conical, the end of less diameter being uppermost,
and round it I make, or fit and fix, a second tubular pot or pipe, cylindrical or
very slightly conical the lower end of which either forms a part of the inner pipe
or rests and is fixed upon a ledge or flange formed round the inner pot at or below
the point where the conical part of the latter commences.
An annular space is thus formed round the conical part of the inner pot, of
gradually increasing area as it rises, and into the lower part of this space I make
a sufficient number of openings through the outer pot or pipe round its circum-
ference, these openings being of any desired shape but preferably triangular with
their apex uppermost.
The outer pot or pipe is carried to a sufficient height above the top of the inner
conical one.
In the accompanying Drawing which is in illustration of my Invention, Figure 1
is a vertical section, Figure 2 a horizontal section, and Figure 3 an elevation, of a
chimney pot constructed in the way just described.
a is the inner pot conical at its upper part as shewn. b is the outer pot or tube,
the two pots being shewn made in one piece, and c is the annular space between
them increasing in area at its upper end. d, d, d are openings through the outer
pot 6 into the lower part of the space c.
The action of the chimney pot is as follows:-Air or wind blowing from any
direction against the chimney pot enters the apertures upon the same side into
the lower part of the annular space and is there diverted upward, as shewn by
the arrow, round the inner conical pot a, inducing an upward current through
the latter and up the outer pot b, thus accelerating the upward draught in the
chimney.
Should the escape of the smoke be temporarily obstructed by currents of wind,
or a downward current caused, the smoke will escape through the apertures d, d, d,
rather than down the inner conical pot a.
Vertical ribs or divisions may be made in the annular space c between the
apertures d, d, d.
The improved chimney pot may be made of any suitable material, such as terra
cotta, earthenware, or metal, and it may be circular or of any other desired shape
in section, and may be ornamented in any way desired. In Figure 4 is represented
a chimney terminal so ornamented, the openings d being so arranged as to be
unnoticeable or little conspicuous.
The inner conical pot or pipe and the outer one may be formed of one piece as
shewn in Figures 1, 2, and 3, or in two parts as shown in Figure 5 in which the

page_text: outer pot b fits over and is carried by the inner conical pot a, its lower edge resting
upon a ledge at c. Or, the two parts may be fitted together so that the outside of
the pot presents a continuous unbroken surface. The two parts being connected
together if required, by cement, lead, pins, or studs, or other convenient means.
In Figure 6 the pipes are shewn of metal, the inner one a being rivetted or
bolted to the outer one b.
My Invention may be applied to chimneys of all kinds, as for instance house
chimneys, or the chimneys of marine or other boilers, or furnaces, and it may also
be applied to ventilating shafts or chimneys or other places where it is required
that an upward current or draught should be maintained.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the saune is to be performed, I declare that what
I claim is :-
:
The combination of the external pot or pipe b, the internal conical pot or pipe a,
and the openings d, d, d, substantially as described and shewn in the Drawing.