Improvements in Chimney Pots, Ventilators, and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots, Ventilators, and the like.
I, ARTHUR BAXENDALE, of Ivy Terrace, Greenside, Wortley, Leeds, in the
County of York, Glazed Brick Maker, do hereby declare the nature of this
invention to be as follows:-
The object of my invention is to construct chimney pots, ventilators, and the
like, in such a manner that the wind injects a spiral updraught of air into the
chimney, which encloses the smoke or other discharge; and in creating a suc-
tion, effectually prevents a down draught.
According to my invention, I construct the chimney pot with a smooth
interior, and on the upper end of same an external ring is attached by means
of a suitable number of vertical ribs which maintain in a concentric position.
The vertical ribs are continued down in a spiral form on the exterior of the pot,
and the exterior edges of the spiral ribs are provided with double flanges so
as to partially enclose the spiral grooves formed by the spaces between the
spiral ribs.
It will thus be seen that the exterior of the chimney pot presents several
spiral grooves, thus allowing the wind to collect and be diverted up the said
grooves into the annular space between the ring and the chimney top, where it
encloses the smoke or other discharge and imparts a powerful suction to the
central channel of the chimney.
The chimney pot above described, may be made in one or in several parts to
suit the convenience of manufacture or transport; and although it is preferable
to make it entirely of earthenware, iron or other suitable materials might also
be employed.
1000
COMPLETE SPECIFICATION.
Improvements in Chimney Pots, Ventilators, and the like.
I, ARTHUR BAXENDALE, of Ivy Terrace, Greenside, Wortley, Leeds, in the
County of York, Glazed Brick Maker, 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 my invention is to construct chimney pots, ventilators, and the
like, in such a manner that the wind injects a spiral updraught of air into the

page_text: chimney, which encloses the smoke or other discharge; and in creating a suc-
tion, effectually prevents a down draught.
In order that my invention may be clearly understood I will proceed to
describe the same with reference to the accompanying drawings in which similar
letters refer to like parts in all the figures.
Figure 1 is a side elevation of a chimney pot, constructed according to my
invention; Figure 2 is a vertical section, and Figure 3 is a sectional plan of
the same.
The chimney pot is constructed with a smooth interior portion A, and on
the upper end of the same an external ring B is attached by means of a suitable
number of radial ribs C which maintain it in a concentric position. The radial
ribs C are continued down in a spiral form on the exterior of the portion A,
and the exterior edges of the spiral ribs C are provided with double flanges I)
so as to partially enclose the spiral grooves E which are formed by the spaces
between the spiral ribs.
It will thus be seen that the exterior of the chimney pot presents several
spiral grooves E, thus allowing the wind to collect and. be diverted up the said
grooves into the annular space between the ring B and the interior of the chim-
ney A, where it encloses the smoke or other discharge and imparts a powerful
suction to the central channel of the chimney.
The chimney pot above described, may be made in one or in several parts to
suit the convenience of manufacture or transport; and although it is preferable
to make it entirely of earthenware, iron or other suitable material might also
be employed.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is: -
1. In chimney pots, ventilators and the like, the combination of the interior
portion A, external ring B, and the spiral radial ribs C, substantially as and
for the purposes set forth.
2. In chimney pots, ventilators and the like, the combination of the interior
portion A, external ring B, spiral radial ribs C and double flanges D; substan-
tially as and for the purposes set forth.
Dated thin 97th
Tannam1000
BREWER & SON,
London and Leeds, Agents for the Applicant.