Improvements in Chimney Pots as a Means of Ventilation for the Prevention of Down-draughts.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots as a Means of Ventilation for the
Prevention of Down-draughts.
I, THOMAS SMITH of 112, Hollingreave Road, Burnley, in the County of
Lancaster, Builder and Contractor, do hereby declare the nature of this invention
to be as follows:-
This invention consists of certain improvements in chimney pots as a means
of ventilation for the prevention of down-draughts.
I preferably apply my invention to a square chimney pot. At two opposite
sides of the pot, I mould or form in the pot, two apertures or openings at
different heights, or one above another. These openings are formed in the pot,
whilst it is in a plastic state, and may be louvred or otherwise.
I now fit into my improved chimney pot, two pivotted baffle plates immediately
below the apertures formed in the chimney pot described above, and projecting
beyond the same, one above another, on the respective sides of the pot. These
baffle plates are so bent and disposed as to overhang one anent another, in such
a manner, that the inrush of down currents of air from the top must of necessity
pass out of the first aperture formed in the pot, or otherwise the said currents
are deflected by the second baffle plate through the second aperture. The baffle
plates may be readily pushed on one side by a brush in sweeping the chimney.
I am perfectly aware that a somewhat similar arrangement has been invented
and patented by one J. Chadwick No. 4708, dated 6th March 1894, the said
apparatus being used in conjunction with the wall of a chimney stack or chimney,
but my invention possesses innumerable advantages over the same.
Dated this 6th day of March 1896.
F. RICHMOND,
12, Standish Street, Burnley, Agent for the Applicant.
Improvements in Chimney Pots as a Means of Ventilation for the
- Prevention of Down-draughts.
I, THOMAS SMITH of 112, Hollingreave Road, Burnley, in the County of
Lancaster, Builder and Contractor, 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:-
This invention consists of certain improvements in chimney pots as a means of
ventilation for the prevention of downdraughts.
I preferably apply my invention to a square chimney pot. At two opposite
sides of the pot, I mould or form in the pot, two apertures or openings at different
heights, or one above another. These openings are formed in the pot, whilst it is
in a plastic state, and may be louvred or otherwise.

page_text: I now fit into my improved chimney pot, two pivotted baffle plates immediately
below the apertures formed in the chimney pot described above, and projecting
beyond the same, one above another, on the respective sides of the pot. These
baffle plates are so bent and disposed as to overhang one anent another, in such a
manner, that the inrush of down currents of air from the top must of necessity
pass out of the first aperture formed in the pot, or otherwise the said currents are
deflected by the second baffle plate through the second aperture. The baffle
plates may be readily pushed on one side by a brush in sweeping the chimney.
I am perfectly aware that a somewhat similar arrangement has been invented
and patented by one J. Chadwick No. 4708 dated 6th of March 1894 the said
apparatus being used in conjunction with the wall of a chimney stack or chimney
but my invention possesses innumerable advantages over the same.
In order that my invention may be readily understood, I have hereunto attached
.the accompanying drawing of a chimney pot constructed and arranged in
accordance with my invention, such drawing being marked with letters and figures
of reference.
The chimney pot A is preferably a square one and has formed or moulded in it
at different heights two apertures B and C. These openings may be formed in the
pot during manufacture when it is in plastic state, and may be louvred or
otherwise, the sides of the pot being otherwise plain and straight.
The drawing shews the pot cut away on the front side to expose the interior.
Immediately below the apertures B and C, I mount in a grooved rest or support D
or otherwise pivot the curved movable baffle plate E. This movable baffle plate,
when supported in the grooved rest as aforesaid, is prevented from falling too far
by a small lug F shewn in dotted lines, and another lug on the front side, broken
away in the drawing.
Similarly, the movable baffle plate G is supported by the curved rest H, and
limited in its forward movement by the lug J moulded with the pot, and another
lug on the front side of the pot (unseen). The rests D and H and lugs J and F
may be likewise formed therewith.
The movable baffle plates may be of earthenware, metal or other desirable
material, and as constructed and arranged above are readily adapted for being
turned aside by a brush when sweeping the chimney-pot, or for that matter may
be removed altogether from their supports D and H.
It will be noticed that the movable baffle plates E and G overlap one another
in such a manner that down currents of air will be obstructed and must pass or be
deflected, either through the apertures B in case they strike the first baffle
plate E, or passing this they will be compelled to strike the second baffle plate G
and pass through the apertures C. At the same time, the heated gases or smoke
ascending from the stack or flue have uninterrupted passage to the atmosphere.
In this way immunity from down-draughts is preserved.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The improved chimney pot A constructed as shewn with straight sides and
having apertures B C and movable or removable baffle plates E and G arranged
and acting substantially in the manner described and illustrated.
¡F.
RICHMOND,
12 Standish Street, Burnley, Agent for the Applicaut.