AN IMPROVED CHIMNEY POT
Year: 1853

page_text: PROVISIONAL SPECIFICATION left by the said Richard Farrant, at
the Office of the Commissioners of Patents, with his Petition, on
the 21st February 1858.
1, RICHARD FARRANT, of Pimlico, do hereby declare the nature of
the said Invention for "AN IMPROVED CHIMNEY POT" to be as follows:-
My Invention of an improved chimney-pot is represented by the
annexed drawing; Figure 1, being an elevation, and Figure 2, a
section. This improved chimney-pot may be constructed in any suit-
able metal, preference being given to zinc, or of terra cotta, or other
plastic material.
The novelty of the Invention is in the peculiar spiral chambers or
projections on the exterior of the pot; the top of the pot is closed, and
these chambers or projections are closed, excepting the lower part.

page_text: which is open for the escape of smoke, as indicated by the arrows
marked B.
The effect of this is, that no downward current of air can enter the
pot while an upward draught is induced.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Richard Farrant, in the Great Seal Patent Office,
on the 20th August 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
RICHARD FARRANT, of Pimlico, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of February in the
year of our Lord One thousand eight hundred and fifty-three, in the
sixteenth year of Her reign, did for Herself, Her heirs and successors,
give and grant unto me, the said Richard Farrant, Her special licence,
that I, the said Richard Farrant, my executors, administrators, and
assigns, or such others as I, the said Richard Farrant, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "AN IMPROVED CHIMNEY POT," upon
the condition (amongst others) that I, the said Richard Farrant, by
an instrument in writing under my hand and seal, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Farrant, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement in the Drawings hereunto annexed :-

page_text: Figure 1, represents an elevation of my improved chimney-pot;
Figure 2, a vertical section; and Figure 3, a cross section thereof.
This improved chimney-pot may be made of any suitable metal, or of
some plastic material; I prefer, however, to use zinc. The distinctive
novelty in this Invention consists in the spiral openings and projections
in the chimney-pot or shaft, the effect of this peculiar arrangement
being the prevention of a downward draught, and consequent "smoking"
of chimneys. The top of the pot or shaft is closed, so that the smoke
can only escape through these spiral openings; and as these spiral
openings are covered by what I term projecting spiral chambers,
currents of wind cannot enter to beat down the smoke. It will be
seen from the drawings that my improved chimney-pot or shaft
assumes a spiral configuration in the interior as well as on the
exterior, for the perforations inside are spiral in form, running in the
reverse direction with the exterior spiral projections. And the fol-
lowing is the mode which I adopt to manufacture this improved
chimney-pot when made of metal: I take a drum or cylinder of wood
of a size similar to the pot to be made, and I affix thereto three or
more strips or supports of metal, say of zinc; I then cut out pieces
of metal in a spiral form, and solder them to the strips or supports.
Having thus formed a cylinder with spiral openings, I cut out other
pieces of metal to form the outer projections or chambers, and these
are soldered to the cylinder, and the wooden frame removed.
top may be made to any architectural pattern, and is to be soldered
to the other parts. The lower part or shoulder must, of course, vary
in size and form to suit the chimney for which it is intended. This
pot or shaft may be made of terra cotta, earthenware, or other plastic
material, by moulding, as is well-known and understood. I do not
confine myself to the mode of manufacture herein-before described,
as it must be obvious that other modes may be adopted, there being
no practical difficulty in constructing chimney-pots according to my
principle. A shaft or pot constructed on this principle may be used
for purposes of ventilation.
The
Having now described the nature of my said Invention, and how the
same is to be performed, I claim the manufacture of an improved

page_text: chimney-pot as herein-before described, and shown by the annexed
drawings.
In witness whereof, I, the said Richard Farrant, have hereunto
set my hand and seal, this Nineteenth day of August One
thousand eight hundred and fifty-three.
RICHARD FARRANT. (L.S.)