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

page_text: Date of Application, 10th Nov., 1896
Complete Specification Left, 17th June. 1897-Accepted. 24th July. 1897
PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots, Ventilators, and the like.
I, JOHN HENRY GREENWOOD, of "Grouville," West Hill Drive, Mansfield, in the
County of Nottingham, Builder, do hereby declare the nature of this invention to
be as follows:
This invention relates to chimney pots, cowls, ventilators, and the like, such as
are described and claimed in the Specification of my Patent Number 5,234 dated
March 9th 1896, and consists of improvements in chimney pots and the like of the
description claimed in such patent, by the use of which improvements they are
enabled to be fixed more firmly and securely, and whereby the upper part is
prevented from descending too low in case of imperfections in the formation of the
It is also of the utmost advantage in inducing a current of air to flow
or rush up the outer tubes.
In order to secure these advantages the rim of the lower end of the chimney pot
or the like is notched, scored, or serrated in such manner that the cement or other
material which attaches it to the chimney forms a better joint between the two than
heretofore. This rim is either formed integrally with or separate from the chimney
pot, and the notching, scoring or serrations serve the purpose of reducing the weight
of the rim.
The cowl is normally held in position by reason of its interior surface fitting
tapered ribs which project from the exterior of the pot. In this invention I add
projections which serve to support the cowl, and prevent its falling even where the
slope of the projections is insufficient.
WILLIAM J. MUNDEN,
75 Chancery Lane, W.C., Agent for the Applicant.
I, JOHN HENRY GREENWOOD, of "Grouville," West Hill Drive, Mansfield, in the
County of Nottingham, Builder 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 to chimney pots, cowls, ventilators and the like, such as are
described and claimed in the Specification of my Patent No. 5,234 dated March 9th,
1896, and consists of improvements in chimney pots and the like of the description
claimed in such patent, by the use of which improvements they are enabled to be
D71

page_text: fixed more firmly and securely, and whereby the upper part is prevented from
descending too low in case of imperfections in the formation of the lower part. It
is also of the utmost advantage in inducing a current of air to flow or rush up the
outer tubes.
It is to be understood that the improvements mentioned herein are not confined to
those shewn in the prior patent hereinbefore mentioned, but they may be applied to
all existing and any kind of chimney pots or the like.
In order to secure the above mentioned advantages, the rim of the lower end of
the chimney pot or the like is notched, scored or serrated in such manner that the
cement or other material which attaches it to the chimney forms a better joint
between the two than heretofore. This rim is either formed integrally with or
separately from the chimney pot, and the notching, scoring or serrations serve the
purpose of reducing the weight of the rim.
In order that my invention may be clearly understood, I append drawings, in
which
Fig. 1 shews an elevation.
Fig. 2 shews the lower section of the pot detached.
Fig. 3 is a detail view of the projection, which upholds the upper section of
the pot.
Fig. 4 is an elevation of the cowl detached.
Fig. 5 is a section of Figs. 1 and 2 on line X-Y.
A is the serrated, scored or notched rim at the lower end of the pot. These
serrations or scorings while causing the cement B or the like with which the pot is
fastened on, to obtain a firmer grip of same, also reduce the weight, and when the
cement is curved upwards around the base of the pot, in the fashion shewn in Fig. 2,
it guides the wind up the air passages thereby increasing its efficiency.
C are projections formed upon the side of the lower section of the pot, on which
the lower end of the cowl D rests, and is thereby prevented from dropping below
its proper position, should the tapered ribs by which. it is normally upheld be
insufficient. In some cases the cowl might be formed integrally with the lower
section which would increase its strength and stability.
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
1. In a chimney pot, ventilator or the like, the notched, scored or serrated rim
formed integrally with, or separately from the chimney pot, at the lower end
thereof, substantially as and for the purpose set forth.
2. In a chimney pot, ventilator or the like, the projections C formed upon the
outside of the cowl, to support same, substantially as shewn and described.
3. In a chimney pot, ventilator or the like, the combination of a notched, scored
or serrated rim A, formed integrally with, or separately therefrom, with projections C
for supporting a cowl D, substantially as shewn and described.
Dated this 14th day of June 1897
JOHN HENRY GREENWOOD.