An Improved Chimney Cowl.
Year: 1889

page_text: Date of Application, 17th Apr., 1889
Complete Specification Left, 17th Jan., 1890-Accepted, 22nd Jan., 1800
PROVISIONAL SPECIFICATION.
An Improved Chimney Cowl.
We, ISAAO SERGINSON, Joiner & Builder, and JAMES NOBLE, Engineer, both of
Grosvenor Terrace, Linthorpe Road, Middlesbro-on-Tees, in the County of York, do
hereby declare the nature of this Invention to be as follows:-
-
Our invention has for its object the construction of an improved form of cowl for
the prevention of down draughts in chimney flues of dwelling houses, or other
buildings.
In carrying our invention into practice, we place on the chimney a tube made of
sheet iron, or other suitable material, having a square base the size of Aloe,
and tapering to a circular opening, on the top of which a hood is placed, having a
portion of the circle cut out, this being regulated by size of flue. The hood is also
open at top and overlaps the tube, revolving on a conical pointed spindle, carried on a
cross-bar and encased with a tube almost the length of spindle, this tube has a conical
plug inserted at top, forming the centre in which the spindle works, on the top of the
hood a vane is placed evenly balancing the hood on its centre, making it extremely
sensitive to the action of the wind, always keeping the open portion of the hood to
the opposite point from which the wind blows, and making it impossible for any down
draught to occur.
Dated this Seventeenth day of April 1889.
AMBROSE MYALL,
21, Cockspur Street, London, S.W., Agent for the Applicants.
COMPLETE SPECIFICATION.
An Improved Chimney Cowl.
We, ISAAC SERGINSON, Joiner and Builder, and JAMES NOBLE, Engineer, both of
Grosvenor Terrace, Linthorpe Road, Middlesbrough-on-Tees, in the County of York,
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 :-
Our invention has for its object the construction of an improved form of cowl for
the prevention of down draughts in chimney flues of dwelling houses, or other
buildings.
In the accompanying sheet of drawings, Fig. 1 is a front elevation and Fig. 2, a
side elevation of our improved cowl.
Similar letters of reference denote similar parts in both figures.
A is a tube made of sheet iron, or other suitable material, to fix on the top of the
chimney flue. It may be made with a square base to fit the flue, and taper to a circular
form at the upper end, or may be circular throughout, according to the construction
of the flue to which it is to be applied.
On the top of the tube A a hood B is placed. This hood is semi-circular in
form, being a half-tube closed at the top and overlapping the tube A at the lower
end, is a pointed spindle fixed on a cross-bar D on the tube A, and E is a tube
almost the full length of the spindle C, fixed to the hood B. A conical plug is
fixed in the top of the tube E, forming a bearing to rest on the point of the spindle C.
The hood B thus revolves on the spindle C, and the vane F is fixed to the top of the
hood to balance it evenly on the spindle. This cowl is extremely sensitive to the
action of the wind, always keeping the open portion of the hood to the opposite
point from which the wind blows, thus making it impossible for any down draught
to occur.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
A chimney cowl formed of a half tube B, closed at the upper end, revolving on a
spindle C, and evenly balanced on the said spindle by a vane F, substantially as
herein described and shown with reference to the accompanying drawings.
Dated this 17th day of January 1890.
AMBROSE MYALL,
21, Cockspur Street, London, S.W., Agent' for the Applicants.