Year: 1887

page_text: +
Date of Application, 25th Mar., 1887
Complete Left, 24th Dec., 1887
Complete Accepted, 27th Jan., 1888
1, JOSEPH MORRIS of 174 Commercial Road East Gentleman do hereby declare the
nature of this invention to be as follows:-
My Invention relates to an improved ventilating chimney top of simple and
efficient construction, whereby down draughts will be prevented whatever may be the
direction of the wind.
For this purpose, the chimney top is provided with one or more rows of apertures
in its sides and with internal and external deflectors whereby any lateral or even
downward current of air or wind will be diverted and caused to take an upward
direction through the chimney top and thereby assist in carrying off the smoke. These
deflectors are immediately opposite the apertures in the top which they shield, the
internal deflectors being inclined or coned inwardly and the external deflectors being
inclined or coned in the opposite direction. The top is surmounted by a cap of
concavo-convex form supported at a sufficient height above the chimney top, to
permit the free exit of smoke whilst preventing the entrance of a downward current.
of wind.
J. MORRIS.
By A. M. & Win. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: 1, JosErn MORRIS of 174 Commercial Road East, Gentleman, 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 :-
My Invention relates to an improved ventilating chimney top of simple and efficient
construction, which is especially designed to prevent the creation of down draughts in
the chimney by a downwardly flowing current of wind, and to improve the draught of
the fire. For this purpose, the chimney top is provided with apertures in its sides and
with internal and external deflectors opposite said apertures, whereby any lateral and
particularly any downward current of air or wind will be diverted in an upward
direction through the chimney top and by its inductive action assist in carrying off
the smoke.
Reference is to be had to the accompanying drawing forming part of this specifi-
cation, wherein figure 1 is an elevation, partly in section, and figure 2 a plan of my
improved ventilating chimney top. The same letters of reference indicate the same
parts in both figures.
The operative part of the chimney top is made preferably of square form with
bevelled corners, and in each of the four principal sides is made a row of apertures and
in each aperture is fixed a trough like cup of which the outer and inner inclined
walls a constitute the deflectors. The upwardly and outwardly inclined outer wall a
is placed at an angle of about 45° from the vertical and its upper edge does not extend
quite up to the level a' of the top of the aperture which it shields, whilst the upwardly
and inwardly inclined inner wall is at an angle of about 30° from the vertical and
extends quite up to the level of the top of said opening. a² are holes at the lower part
of the outer part a to allow the rain to run off.
The chimney top may be surmounted by a cap of concavo-convex form, supported at
a sufficient height above the chimney top, to permit the free exit of smoke, whilst
preventing the entrance of a downward current of wind; but this forms no part of my
invention, and is not therefore illustrated in the drawings.
It will be seen that a current of wind striking the chimney top in the direction of
arrow No. 1, will by the conjoint action of the oppositely inclined deflectors ab, be
forced to enter through the sides of the chimney top, and in so doing will necessarily
be caused to take an upward direction, thereby promoting the draught in the chimney;
whereas were the inner deflectors alone used, such a current of wind would glance off
without entering through the sides and would be liable to cause a down draught by
entering at the upper end of the chimney top. The same remark holds good of a
horizontal wind current, although to a less degree.
The whole of the improved ventilating chimney top may be constructed of tinned
or galvanised iron in the ordinary way of constructing such tinman's ware.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A ventilating chimney top having one or more apertures in each or any of the
sides in combination with upwardly inclined deflectors applied opposite to each
aperture both at the outside and inside of the chimney top, substantially as herein
specified.
2. The herein described ventilating chimney top having in its sides, series of
apertures with trough like cups therein, acting as deflectors for the wind, substantially
as specified.
J. MORRIS.
By A. M. & Wm Clark,
53, Chancery Lane, London,
Patent Agents.