Improvements in or applicable to Chimney Pots, Ventilators, and the like.
Year: 1896

page_text: Date of Application, 17th Mar., 1896
Complete Specification Left, 19th Oct., 1896-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Chimney Pots, Ventilators, and
the like.
I JONATHAN HARGREAVES of 27 Lodge Road, Hindsford, Atherton, in the
County of Lancaster, Mill Manager, do hereby declare the nature of this invention
to be as follows:-
This invention relates especially to chimney pots and ventilators, the object
being to create a strong current of air in such chimney pot or ventilator in the
desired direction, and thus to prevent the chimney to which the pot is applied
from "smoking," or to increase the amount of air admitted or withdrawn by the
ventilator.
The invention is however also applicable to other shafts or passages of similar
nature.
When applying my invention to chimney pots I form or provide the same
with a tube (or more than one such tube) extending upwards inside the pot
from a point near the lower end thereof and open to the outside of the pot
where each tube is provided with a trumpet mouth, and preferably tapered or
reduced in diameter at the inner end, which is open to the interior of the
chimney pot.
In the case of a chimney which only "smokes" when a wind blows from one
quarter, only one tube will be required for the chimney pot, and the air collected
by the trumpet mouth of the said tube which is open in the direction of the
aforesaid quarter will be forced through the inner end of the tube and rise in the
chimney pot thus creating an upward current of air in the chimney and preventing
down-draught.
It will be evident that my invention is applicable for inducing a current of air
in a ventilating shaft, or for other like purposes.
Dated this 16th day of March 1896.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
Improvements in or applicable to Chimney Pots, Ventilators, and
the like.
1 JONATHAN HARGREAVES, of 27 Lodge Road, Hindsford, Atherton, in the
County of Lancaster, Mill Manager, 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 relates especially to chimney pots and ventilators, the object
being to create a strong central current of air in such chimney pot or ventilator,
in the desired upward direction, and thus to prevent the chimney to which the pot
is applied from smoking," or to increase the amount of air passing through the
ventilator

page_text: The invention is however also applicable to other shafts or passages of a similar
nature.
The manner in which my invention is to be performed or carried into practical
effect will be readily understood on reference to the sheet of drawings hereunto
annexed and the following explanation thereof.
Fig. 1 on the annexed drawing is a front elevation, Fig. 2 a vertical section, and
Fig. 3 a plan or horizontal section of one of my improved chimney pots with a single
tube as hereinafter described and Figs. 4, 5 and 6 are similar views of an improved
chimney pot with four tubes.
When applying my invention to a chimney pot with only one tube (see Figs. 1,2
and 3), I provide the pot a with a tube b extending upwards inside the pot a but
not touching the same and open to the air outside the pot where the tube is provided
with a trumpet mouth c. The tube is preferably flattened and tapered or reduced
in diameter towards the inner end which is open to the interior of the chimney pot
and placed at such an angle as to cause an ascending current of air up the centre
of the pot.
In the case of a chimney which only "smokes" when the wind blows from a
particular quarter only one tube will be required for the chimney pot as shewn at
Figs. 1, 2 and 3, and the air collected by the trumpet mouth c (which is to be open
in the direction of the aforesaid quarter) will be forced through the inner end
thereof at an increased velocity and thus cause a keen upward draught up the
centre of the chimney and prevent all liability to "smoking," but in other cases
two or four inclined taper trumpet mouthed tubes may be fitted as illustrated by
Figs. 3, 4 and 5.
The application of my said invention for inducing a current of air in a
ventilating shaft or for other like purposes is so evident as to require no
special drawings or description to enable any one to put the same into
practice.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
The combination with a chimney pot, ventilating shaft, or the like of a
tapering tube (or tubes) provided with a trumpet mouth (or mouths) at or near
the bottom opening into the air and inclined upwards and inwards inside the pot or
shaft so as to cause an ascending current of air up the centre of the same as herein-
before described and illustrated by the drawings annexed.
Dated this Sixteenth day of October 1896.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.