Improvements in Chimney Cowls.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in Chimney Cowls.
I, FREDRICK CHARLES WOODFORD of 33, Burns Road, Harlesden, London,
Gentleman, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in chimney cowls and has for its object to
provide means whereby the force of the wind can be utilised to greater advantage
for the purpose of rotating same than is at present the case, while outlet holes are
so formed as to draw the smoke from the chimney and to cause an up-draught, and
further, the cowl is constructed in such a manner that a broom or the like can reach
right to the top of same for cleaning purposes.
In carrying my invention into practical effect, the cowl is constructed mainly of
the usual shape and form, that is, having a hollow cylindrical body supported upon
an upright spindle so as to be free to revolve and provided with a suitable oiling
device at the top. This cylindrical body is furnished with a series of vertical
vanes of the usual form, but each furnished in addition with a lip at the inner edge
so as to afford a large and better surface to the wind. The lower part of this
revolving body is provided with a series of outlet holes every alternate one having
on the inside a suitably curved guide plate for the purpose of drawing the smoke
from the chimney, and causing an up-draught.
As my improvements are capable of some improvements without departing from
the principle thereof I do not restrict myself to materials, dimensions, or to the
precise form or placement of the several parts thereof.
Dated this 14th day of September 1894.
F. G. CASSELL
(Of Cassell & Co.), .
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.
Improvements in Chimney Cowis,
I, FREDRICK CHARLES WOODFORD 33, Burns Road, Harlesden, London,
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 improvements in chimney cowls and has for its object to
provide means whereby the force of the wind can be utilized to greater advantage
for the purpose of rotating same than is at present the case, while outlet holes are
so formed as to draw the smoke from the chimney and to cause an updraught, and
further, the cowl is constructed in such a manner that a broom or the like can reach
right to the top of same for cleaning purposes.
In carrying my invention into practical effect, the cowl is constructed mainly of
the usual shape and form, that is, having a hollow cylindrical body supported upon
a suitable upright spindle so as to be free to revolve and provided with any suitable
oiling device at the top. This cylindrical body is furnished with a series of vertical

page_text: vanes of the usual form, but each furnished in addition with a lip at the inner edge
so as to afford a large and better surface to the wind. The lower part of this
revolving body is provided with a series of outlet holes every alternate one having
on the inside a suitably curved guide plate for the purpose of drawing the smoke
from the chimney, and causing an up-draught.
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompanying drawings, in which
Fig. 1 is a side elevation of my improved cowl, and
Fig. 2 a cross section on linea, of Fig. 1.
Fig. 3 is an underside plan of the revolving top or body, showing the curved
plates for causing an up-draught and
Fig. 4 shows one of the vertical plates or vanes at an enlarged scale.
Fig. 5 is a cross section through the lower part of the revolving top or body
shewing the curved guide plates in elevation.
My improved cowl consists of the lower part p designed to pass over or into the
chimney and over which is mounted upon a suitable spindle carried by the frame
the upper revolving part or body a, which is furnished with a number of vertical
plates or vanes mainly of the usual shape or form but each furnished in addition
at its inner edge with a lip 7 as clearly shown in the drawings (Figs. 2 and 4) so as
to afford a larger and better wind surface, while the lower part a of the revolving
body is furnished with a number of outlet holes o every alternate one being
furnished with a suitable shaped curved plate c, (Fig. 3.) at the underside of same
for the purpose of causing an up-draught and drawing the smoke from the
chimney.
These curved plates c may be sufficiently large so as to partly cover over the
second hole as shown in the drawings, or each hole may be provided with a
separate plate, while in some cases the number of plates may be diminished.
By this invention a cowl having a larger and better wind surface is provided,
and the curved plates c offer a very effectual means for causing an up-draught and
drawing the smoke from the chimney, while owing to the shape and placement of
the said plates the chimney is quite free and open to the top, and allows of a broom
being readily passed up same for cleaning purposes.
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 chimney cowls having plates or vanes such as the addition of a curved
lip such as to same, substantially as described and shown and for the purposes
specified.
2. In chimney cowls having openings such as o the application to same of curved
plates c, substantially as herein described and for the purposes specified.
3. The new or improved chimney cowl arranged and constructed substantially as
herein described and shown and for the purposes specified.
Dated this 13th day of June 1895.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.