Improvements in the Ventilation of Chimney Pots.
Year: 1895

page_text: Date of Application, 16th Dec., 1895-Accepted, 18th Jan., 1896
COMPLETE SPECIFICATION.
Improvements in the Ventilation of Chimney Pots.
We, J. DUCKETT AND SON LIMITED, Mitre Sanitary Works, Burnley, in the
County of Lancaster, and JAMES DUCKETT, Woodleigh, Burnley aforesaid,
Sanitary Ware Manufacturers, 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 improve upon that class of chimney pots, which
are formed near their upper surfaces in grooved rings or louvres with openings or
spaces between, to afford a means of ventilation of the chimney flue. The wind in
beating against the grooved surfaces of the chimney pot is thereby set in motion.
in a peculiar manner, being thereby thrown into a series of undulating waves or-
rings, which as they whirl past the edges of the grooves have a tendency to draw
the smoke through the spaces of the chimney pot, and so prevent down draughts.
Though effective as a means of ventilation and the prevention of downdraughts,
this type of chimney pot, as for example Sutcliffe's Patent No. 10,701 of 1886 has
one serious objection, and that is that the rain running down the surface of the
chimney pot in wet weather finds its way through, or enters the openings or spaces-
described above, and thus gets into the smoke flue.
Now our invention is specially designed to avert this evil, and the method, which
we have devised, will be fully understood by reference to the accompanying
drawings.
To be more clear we have thought fit to have two diagrams, Fig. 1 representing
patent chimney pot, No. 10,701 of 1886, and Fig. 2 our improved construction.
thereof.
Referring to Fig. 1 it will be evident, that the rain running down the surface of
the chimney pot at A will enter into, or beat its way through, the openings or
spaces W, and so get into the smoke flue-a very serious and palpable objection..
To remedy this defect, we make the said draw plates or louvres D to overlap each
other in such a manner as to form a drip ledge, and thus prevent the entrance of
rain into the smoke flue. This will be at once apparent by reference to Fig. 2, the
extended or overlapping projections E, so to speak, safeguarding the spaces or
openings F against the entrance of rain, but permitting the wind unmitigated action
to produce the effect so much desired.
The overlapping and V shaped channels E, instead of being formed exactly as
represented, may be curved or otherwise varied in form and dimensions.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A chimney pot with one or more grooved rings, draw plates or louvres, in
combination, constructed, formed, and arranged with overlapping projections or
drip ledges, substantially as described and illustrated in Fig. 2, for the purpose.
set forth.
Dated this 14th day of December 1895.
F. RICHMOND,
12, Standish Street, Burnley, Agent for the Applicants.