An Improved Chimney-top for the Cure of Smoky Chimneys.
Year: 1890

page_text: Date of Application, 3rd Mar., 1890
Complete Specification Left. 15th Sept, 1890-Accepted, 18th Oct., 1890
PROVISIONAL SPECIFICATION.
An Improved Chimney-top for the Cure of Smoky Chimneys.
WILLIAM SUMMERSON Plumber No. 30 Hendon Road Sunderland. I do hereby
declare the nature of this invention to be as follows:-
To be inade of galvanized iron or zinc, circular in shape extreme length five feet,
bottom of base, eleven inches diameter the top of base and shaft ten inches diameter,
having a cone on the top, the diameter of top being four inches and diameter at bottom
eleven inches. A wind guard is inserted four inches down from top of cone. It is
five inches in diameter and is suspended from top with four iron stays. The top of
cone is fluted with eight exits each being a semicircle four inches diameter. This
fluted top is fixed to a circular tapered cape. The cape being fixed upon four top
pockets each six inches diameter, leaving an air space of one inch clear of cone. The
eight bottom pockets are fixed to the shaft immediately below the four upper ones.
They are about a three quarter circle six inches by four inches. The object of the
pockets being to cause an exit for the smoke when the wind is in such a state that it
will not allow the smoke to come out at the top. The chimney top being so con-
structed that it prevents the wind getting down the chimney as it will escape down
the flutings and top pockets. And if the wind be blowing in an upward tendency it
will go through the pockets in an upward direction and out at the top of flutings.
The total superficial area or bore of flutings and pockets is 255 superficial inches.
Dated this 1st da
Manah 1900
W. SUMMERSON.
COMPLETE. SPECIFICATION.
An Improved Chimney-top for the Cure of Smoky Chimneys.
WILLIAM SUMMERSON Plumber No. 30 Hendon Road Sunderland Durham. I do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
To be made of galvanized iron, or zinc, circular in shape, extreme length five feet,
bottom of base eleven inches diameter, the top of base and shaft ten inches diameter,
having a cone on the top, the diameter of top being four inches, and diameter at
bottom eleven inches. A wind guard is inserted four inches down, from top of cone,
it is five inches in diameter, and is suspended from top with four iron stays. The top
of cone is fluted with eight exits each being a semicircle, four inches in diameter.
This fluted top is fixed to a circular tapered cape. The cape being fixed upon four
top pockets, each six inches diameter, having an air space one inch clear of cone.
The eight bottom pockets are fixed to the shaft immediately below the four upper
ones. They are about a three quarter circle six inches by four inches. The object of
the pockets being to cause an exit for the smoke when the wind is in such a state that
it will not allow the smoke to come out at the top. The chimney being so constructed
that it prevents the wind getting down the chimney as it will escape down the flutings
and top pockets, and if the wind be blowing in an upward tendency it will go through
the pockets in an upward direction and out at the top of flutings. The total super-
ficial area or bore of flutings and pockets is 255 superficial inches.
Although I have mentioned a set measurement and number of flutings & pockets
either larger or smaller or more or less pockets & flutings will answer the same
purpose. To describe more fully the chimney I will begin with Fig. 1 which is the
top covering. This I construct in two parts or plates fluted which on looking down
on it shews eight flutes.

page_text: Fig. 2 is a sectional view which shews the chimney complete internally. It will be
seen on reference to Fig. 3 that the holes are properly protected by the pockets A or
caps which stop the down draught. The holes B Fig. 1. Fig. 2 and Fig. 3 I leave
small so that the down draught will not be felt much on the top of Fig. 1, but, still
enough to allow the current of air to sweep the smoke out of the holes D, which it will
be seen are cupped inwards at C, so as to more readily allow the exit of the smoke.
It will be seen at once, that on account of the large number of holes and those holes
being cupped in at the bottom, the smoke will be caught and forced out by any down
draught.
Having now described and particularly ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is.
First. The large number of holes in the body of chimney top as described and
represented in Fig. 1. 2. and 3.
Second. The caps or pockets A to stop the down draught substantially as repre-
sented and described.
Third. The capping inward of the holes D and the mode of constructing the top or
cap Fig. 1 as described and represented.
Fourth. The improved chimney as and for the purpose hereinbefore described and
represented in drawings Fig. 1 Fig. 2 and Fig. 3.
Dated this First day of March 1890.
W. SUMMERSON.