IMPROVEMENTS IN CHIMNEY TOPS OR COWLS
Year: 1860

page_text: LETTERS PATENT to John Martyn Fisher, of Taunton, in the County of
Somerset, Manufacturing and Furnishing Ironmonger, for the Invention
of "IMPROVEMENTS IN CHIMNEY TOPS OR COWLS."
Scaled the 6th November 1860, and dated the 9th May 1860.
PROVISIONAL SPECIFICATION left by the said John Martyn Fisher at
the Office of the Commissioners of Patents, with his Petition, on the
9th May 1860.
I, JOHN MARTYN FISHER, of Taunton, in the County of Somerset, Manu-
facturing and Furnishing Ironmonger, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN CHIMNEY TOPS OR COWLS," to be as
follows:-
My Invention consists in constructing chimney tops of a series of conical-
shaped funnels placed one over the other, and held at a convenient distance
apart by side bars or frames. The frames carry a plain band or cylinder at
top, and this band supports a double conical-shaped cover, which is placed
over the central aperture formed by the funnels. Inside the funnels I fit a
vertical rod with one, two, or more screw vanes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent. filed
by the said John Martyn Fisher in the Great Seal Patent Office ou
the 8th November 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
MARTYN FISHER, of Taunton, in the County of Somerset, Manufacturing' and
Furnishing Ironmonger, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of May, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said John Martyn Fisher, Her special licence that I, the said
John Martyn Fisher, my executors, administrators, and assigns, or such
others as I, the said John Martyn Fisher, 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 "IMPROVEMENTS IN CHIMNEY TOPS OR COWLS," upon the con-
dition (amongst others) that I, the said John Martyn Fisher, my executors
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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 John Martyn Fisher, 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 thereof, reference being had to the Drawings hereunto annexed,
that is to say:-
My Invention consists in constructing chimney tops of a series of conical-
shaped funnels placed one over the other, and held at a convenient distance
apart by side bars or frames. The frames carry a plain band or cylinder at
top, and this band supports a conical-shaped cover, which is placed over the
central aperture formed by the funnels. Inside the funnels I fit a vertical rod
with one, two, or more screw vanes.
Figuro 1 of the accompanying Drawings is an external elevation; and
Figure 2, a longitudinal section of this chimney top or cowl.

page_text: a is a frame supporting a series of conical-shaped funnels or plates b, b;
c is the plain band or cylinder at the upper part of the frame; and d is the
conical-shaped cover over the central aperture of the chimney top, supported
from the band c by the plates e, e; f is a screw mounted on a vertical rod g,
and working in a bearing h. The screw is caused to revolve by the action of
the external air entering between the funnels, and by the air coming up the
chimney, whereby a strong upward current is maintained, and smoking of the
chimney prevented; the screw at the same time prevents the accumulation of
soot, as well as the descent of down draught.. When used for ventilating only,
the screw draws up the foul or vitiated air.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim, constructing
chimney tops or cowls substantially in manner herein-before described and
illustrated in the accompanying Drawings.
In witness whereof, I, the said John Martyn Fisher, have hereunto
set my hand and seal, this Sixth day of November, One thousand
eight hundred and sixty.
JOHN MARTYN FISHER. (L.S.)