Improvements in or relating to Chimney Tops.
Year: 1886

page_text: Date of Application, 11th Dec., 1886.
Specification Accepted, 21st Jan., 1887.
Improvements in or relating to Chimney Tops.
I, JAMES GOWLAND Decorator 20, Ogleforth, York, in the County of York, do
hereby declare the nature of my 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 improvements in or relating to chimney tops and its object
is to provide a free and protected escape for the smoke or other gases as they issue
from the chimney top or outlet in all weathers, as well as removing or neutralizing any
obstruction caused by the wind or air currents thereby enabling and assisting the smoke
to rise from and above the chimney top; and it consists in fixing to the outer portion
of the chimney top or smoke outlet a covered ring or cylinder, made of metal or other
material, and of a suitable diameter and depth so as to leave an annular space between
it and the outer portion of the top.
In order that my invention may be more fully understood reference is given to the
accompanying drawings in which Fig. 1. is a sectional elevation, and Fig. 2. a
perspective view of chimney shaft or top with my invention applied.
Cis the chimney shaft or smoke outlet, on the top of which is fixed by stays bor
other convenient means a ring or cylinder B provided, at a suitable distance above its
upper end, with a dished or concaved, or conical, or flat circular cover A of a larger
diameter than the ring. The ring B may be made of metal-preferably galvanized
iron or of any other suitable material, and of such a diameter as to leave an annular
space between its inner circumference and the periphery of the shaft or outlet C.
The ring B is fixed to the shaft or outlet equidistant above and below the top of the
chimney C so as to prevent the air currents from passing down into the flue. A space a
is also allowed between the upper end of the annular ring B and the cover A to
permit of the smoke and air currents passing respectively freely out or through. The
cover A may be attached to the ring B by stays a' as shown, or by any other convenient
means.
By the herein described arrangement, the smoke passes up the flue and out of the
top into ring B from whence it escapes through space or outlet a, but should there be a

page_text: cross air current sealing this outlet, the smoke will thereby be driven or forced down
the annular space b¹ and out at &, whilst the cover A is employed for preventing any
draughts from passing down the fluc. Any air current that may enter the ring B,
either escapes therefrom through space a, or else is diverted down the annular space
and out at b.
61
Although I have described the ring and cover as being circular and made of metal,
yet I wish it to be distinctly understood that I do not limit myself to that shape
or material, as they may be made in other forms such as for instance, square or poly-
gonal, and of earthenware or other suitable material. Further, I am aware that tops
for chimneys having a circular annular ring without a cover have been previously used,
as well as those having a cover and a ring in which are a series of wide vertical slits or
openings through which the smoke escapes, but to none of these do I lay any claim as
the provision therein made is not effectual for attaining the objects I have in view.
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 :-
First. The manufacture and use of a chimney top with the ring or cylinder and cover
fixed to and at a suitable distance from and above its upper outer portion so as to allow
the smoke or other gases to escape freely therefrom, whilst preventing any air current
passing down the chimney shaft or flue, substantially as herein described and
illustrated.
Second. The combination of the ring or cylinder B having a cover A at a suitable
distance above its upper end, with the top or outlet portion of a chimney or smoke
outlet C substantially as herein described and illustrated.