Improvements in Chimney Pots.
Year: 1890

page_text: Date of Application, 20th Dec., 1890
Complete Specification Left. 21st Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots.
I, THOMAS EDWARD CLARKE of Alcombe Côte, Dunster, in the County of
Devon, Justice of the Peace for Devon and Somerset, do hereby declare the nature
of this invention to be as follows:-
The object of this invention is to obviate the annoyances arising from sinoky
chinnies, caused either by a down draught in the chimney, or the wind, when
boisterous, blowing down the chimney; and the invention consists in a novel con-
struction and arrangement of chimney pot which will effect the purpose.
A contingent advantage to be obtained from the use of the improved chimney
pot is, that an updranght is also to some extent induced.
In carrying out my invention, I form a tube to serve as the chimney pot proper,
of any suitable length and of say 10 inches diameter at the outlet.
Outside the upper part of the tube, and concentric therewith, I secure an open
ended cylinder of say 15 inches diameter, and of about two feet six inches in
length. This cylinder is arranged to extend about six inches below the mouth of
the tube, and inside the cylinder I place, at about twelve inches above the chimney
pot proper or tube, a disc of the same diameter as the pot. This disc is secured to
à rod which works in a guide tube carried by a cross stay.
About 12 inches above the normal position of the disc, place a ring of the
same external diameter as the cylinder, and having an opening of the same diameter
as the disc.
may also find it desirable to vandyke the upper edge of the cylinder, so as to
break up, to some extent, the currents of air striking the pot.
The guide tube, while allowing the rod to slide freely therein for cleaning
purposes, will be of such a length as to maintain the disc in a constant position,
that is to say, prevent its swinging.
Dated this 20th day of December 1890.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Chimney Pots.
I THOMAS EDWARD CLARKE of Alcombe Côte, Dunster, in the County of
Devon, Justice of the Peace for Devon and Somerset, 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 :-
The object of this invention is to obviate the annoyances arising from sinoky
chimnies, caused either by a direct down draught in the chimney, or by the wind,
when boisterous, blowing down the chimney; and the invention consists in a novel
construction and arrangement of chimney pot which will effect the purpose.
A contingent advantage to be obtained from the use of the improved chimney
pot is, that an updraught is also to some extent induced.
In the accompanying drawing I have shown my improved chimney pot in
sectional elevation.
In carrying out my invention, I form a tube A to serve as the chimney pot
proper, of any suitable length and of say 10 inches diameter at the outlet.
Outside the upper part of the tube, and concentric therewith, I secure an open
ended cylinder B of say 15 inches diameter, and of about two feet six inches in
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page_text: length, which is secured so as to extend about six inches below the mouth of the
tube A. Inside the cylinder I place, at about twelve inches above the chimney pot
proper or tube A, a disc C of the same diameter, as the pot A. This disc is
secured to a rod which-works in a guidestube C2 carried by a cross stay C³ in
the cylinder B.
About 12 inches above the norinal position of the disc I place a ring D of the
same external diameter as the cylinder B;.and having an opening D' of the same
diameter as the disc C.
I may also find it desirable to vandyke the upper edge of the cylinder B so as
to break up, to some extent, the currents of air striking the pot.
The guide tube C2 while allowing the rod to slide freely therein, will be of such
a length as to maintain the disc C in a constant position, that is to say prevent its
swinging.
By this means the mouth of the pot will be protected from wind blowing down
while free exit for the smoke is provided. The disc acts as a deflector and deflects
the currents of air to the sides of the cylinder B down which they creep passing
out by the annular space between the cylinder B and the pot A.
The downward current of air which passes outside the pot A will tend to induce
an upward current on the chimney.
The disc C which is capable of being raised by the sweep's broom will in no way
hinder the sweeping of the chimney and there are no working parts to get out of
order disadvantages one or other of which arise in almost all other kinds of anti-
down draught chimney pots.
Having now particularly described and ascertained the nature of my said
-invention and in what manner the same is to be performed Ideclare that what I
claim is
1. A chimney pot constructed and arranged as herein shown and described.
2. The combination with a chimney pot proper or tube, of.. cylinder of larger
diameter and a disc of the same diameter as the pot and so a.ranged or supported
as to maintain a constant-position-concentric with the cylinder but be capable of
vertical movement ns and for the purpose set forth.
-Dated this 21st day of September 1891.