An Improved Chimney Top or Ventilating Head.
Year: 1895

page_text: Date of Application, 26th Nov., 1895
Complete Specification Left, 26th Feb., 1896-Accepted, 28th Mar., 1896
PROVISIONAL SPECIFICATION.
An Improved Chimney Top or Ventilating Head.
1, WILLIAM DANIEL SHARD of No. 3 The Square, Kennilworth, Ironmonger,.
do hereby declare the nature of this invention to be as follows:-
This invention consists of a simple form of flue terminal, which can be made of
metal earthenware or other suitable material or combination of materials. It is
designed especially to ensure the exit of smoke or foul air by preventing down
draught.
The construction is as follows:-A straight or tapering tube is surmounted at a.
short distance above its summit by a conical cap, which overhangs the end of the tube.
At a short distance below the said summit there is fixed to the tube a horizontal
funnel-shaped annular guard, the lower end of which is larger than the tube, and
allows the wind to play up or down on the outside thereof. This guard broadens as
it ascends, and thus surrounds the lower part of the conical cap with its upper part,
entirely sheltering the annular outlet from the flue against horizontal wind pressure.
In case of rain or vertical wind pressure downwards, the overhanging cap protects
the mouth of the flue, and directs the wind or rain against the funnel-shaped guard
whence it descends vertically outside the flue. If the wind pressure be upwards, the
cap similarly directs it outwards against the funnel whence it is dispersed in an
upward and outward direction.
Dated this 26th day of November 1895
S. S. BROMHEAD,
97 Newgate Street, London, Agent for Applicant.
An improved Chimney Top or ventilating Head.
I, WILLIAM DANIEL SHARD of No. 3 The Square, Kenilworth, Ironmonger,
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 consists of a simple form of flue terminal, which can be made of
metal earthenware or other suitable material or combination of materials. It is
designed especially to ensure the exit of smoke or foul air by preventing down
draught.
The construction is as follows: A straight or tapering tube or neck is surmounted
at a short distance above its summit by a conical cap which overhangs the end of the
tube. At a short distance below the said summit there is fixed to the tube a
horizontal funnel-shaped annular guard, the lower end of which is larger than the
tube, and allows the wind to play up or down on the outside thereof. This guard
broadens as it ascends, and thus surrounds the lower part of the conical cap
with its upper part, entirely sheltering the annular outlet from the flue against
horizontal wind pressure. In case of rain or vertical wind pressure downwards the
overhanging cap protects the mouth of the flue, and directs the wind or rain
TDi Q77

page_text: against the funnel-shaped guard whence it descends vertically outside the flue. If the
wind pressure be upwards, the cap similarly directs it outwards against the funnel
whence it is dispersed in an upward and outward direction.
I will now describe the invention with reference to the accompanying drawings
in which
Fig. 1 shows a side elevation of a circular form of my improved chimney top
or ventilator head.
Fig. 2 shows a vertical section of same and Fig. 3 a plan view.
Fig. 4 shows an elevation and horizontal section of an octagonal form of same.
a is the vertical tube or neck which may be straight or taper as preferred.
b is the annular funnel-shaped guard supported from a by means of the radial
projections c c as shown.
d is the conical cap supported by other projections e from a.
I reserve the right to make the three main parts of my chimney top either of
circular, octagonal, square, triangular, or the like section as preferred.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In a chimney top or ventilator head the annular funnel-shaped guard together with
conical cap, in combination with the vertical or tapering neck, all three being of any
preferred sectional outline as herein described and set forth.
Noted this 26th day of Hebruary 1846
Dated this 26th
b day of February 1896
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent.