Improved Cowl or Chimney-pot for Preventing Down-draught in and Rain from Descending Chimney-flues
Year: 1897

page_text: Date of Application, 1st Jan., 1897
Complete Specification Left, 1st Oct., 1897-Accepted, 4th Dec., 1897
"Improved Cowl or Chimney-pot for Preventing Down-draught in
and Rain from Descending Chimney-flues."
I, JOHN GOODWIN Westwood Mills, Hanley. Stoke-on-Trent. Staffordshire. Flint
Miller do hereby declare the nature of this invention to be as follows :-
:-
This my Invention has reference to an improved cowl, or chimney-pot, the object
of my said Invention being to prevent down-draught in, and rain from descending
chimney-flues.
In carrying my said Invention into practice I make such cowls or chimney-pots of
various sizes of or from zinc, sheet-iron, stone-ware, terra-cotta or the like suitable
material of suitable thickness, the base or lower portion of such cowls, or chimney-pots
may be square, rectangular, round or other suitable shape in plan view and of any
suitable height, to the top side of such base I solder, rivet or otherwise secure an
upright or vertical cylinder, preferably circular in cross-section, the upper part of
such cylinder having an enlarged or projecting portion formed thereon, and a circular
apright portion on same of suitable height, in and around which I make any suitable
number of suitably shaped holes at a suitable distance or distances apart, to and
around such upper circular portion in which such holes or apertures are formed and
at a suitable distance therefrom I form, fix or attach a circular or other suitably
shaped casing or wall. To the under-side of the top surface. of the base of such cowls
form or fix by any suitable means a stay or cross-piece, to the top or bottom side
of which cross-piece I attach or fix a metallic, or other suitable foot-step bearing.
Within the aforesaid upper circular portion in which the apertures are made I
loosely fit a circular revolvable cylinder of suitable length having about half of its
periphery cut away, the upper and lower ends of such cylinder may be strengthened
by means of cross-bars of metal, or other suitable material of suitable thickness
attached or fixed thereto at their outer ends, and at, or to the upper end of such
cylinder I attach a removable conical, or other suitably shaped lid or cover with a
circumferential projecting rim. Such capped cylinder being rigidly secured or fixed
to a metallic shaft or spindle of suitable size passing centrally through same, the
lower end of such metallic spindle bearing in or upon the aforementioned foot-step
attached to the aforesaid cross-piece. The upper portion of such metallic spindle
which projects above the capped cylinder having a suitably shaped metallic vane
attached thereto.
It will be readily understood that smoke and gases ascending into such capped
cylinder of such cowls can escape therefrom through the aperture formed in such
revolvable cylinder and the apertures in the circular portion surrounding same into
the space between such cylinder and the wall or casing, from which space such smoke
or gases ascend or descend into the atmosphere, the wall or casing and the detachable
cover preventing the ingress of rain into the flues to which such cowls are affixed.
In a modifieation of the foregoing I fit a removable conical cap such as above*

page_text: described to the upper edge of the circular portion in which the several apertures are
formed, and dispense with the revolvable cylinder, the spindle and footstep bearing.
Dated this 31st day of December 1895.
"Improved Cowl or Chimney-pot for Preventing Down-draught in
and Rain from Descending Chimney-flues."
I, JOHN GOODWIN Westwood Mills, Hanley, Stoke-on-Trent. Staffordshire. Flint
Miller. 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 my Invention has reference to an improved cowl and chimney-pot, the object
of my said Invention being to prevent down-draughts in, and rain from descending
the chimney flues of dwelling houses, factories and like places.
In carrying my said Invention into practice I make such cowls and chimney-pots
of various sizes of or from sheet zine, galvanized sheet iron or like suitable metallic
sheets of suitable thickness or thicknesses, the chimney-pots I preferably make from
moulded or pressed terra-cotta or stone-ware or like suitable material of suitable
thickness, the base or lower portion of such cowls and chimney pots may be square,
rectangular, circular, hexagonal, octagonal or other suitable shape in plan view of
suitable height, to the top side of such base portion I solder, rivet or otherwise secure
a tubular metallic cylinder, the upper end of such cylinder having a swelled or
enlarged cylindrical portion formed thereon of suitable height or length, in and
around which enlarged cylindrical portion before rolling same into shape I make any
suitable number of suitably shaped slots or apertures of suitable size at a suitable
distance or distances apart, around the said cylindrical portion in which such
apertures are formed at a suitable distance therefrom I fix or attach a circular or
other suitably shaped metallic casing of suitable thickness. To the underside of the
top surface of the base of such cowls I fix or attach by metallic rivets, bolts and nuts
or the like a suitable wrought-iron or galvanized iron or like suitable metallic stay or
cross-piece, to which stay I attach, fasten or fix by any suitable means a suitably
shaped glass, brass or like suitable footstep bearing.
Within the said circular portion in which the slots or apertures are made I loosely
fit a revoluble zinc, galvanized iron or other suitable metallic cylinder of suitable
thickness having about a half of its circumferential periphery cut away, the upper
and lower ends of such cylinder may be strengthened by means of straight or curved
metallic straps or bars of suitable size, the ends of each bar being rivetted, boited or
otherwise secured to the internal periphery of such revoluble cylinder.
To the upper end of the cylindrical portion in which the several slots or apertures
are formed I rivet, bolt or otherwise rigidly attach or fix a conical or other suitably
shaped zinc, galvanized iron or like suitable metallic lid or cap of suitable thickness,
to the underside of the summit or apex of which lid or cap I secure a glass, brass or
like suitable guide of suitable shape and size so that the upper portion of a vertical
steel, wrought-iron or galvanized iron spindle of suitable diameter may be caused by
the wind striking against a metallic or other vane fixed at the upper end of such
spindle to rotate in a hole formned through such guide, the lower end of such
"

page_text: Figure 1 is an elevation of a sheet zinc cowl made according to my Invention.
Figure 2 is a plan view of same, showing in dotted lines that the base of such
cowls may have a projecting flange arouud same for enabling such cowls to be readily
fixed iu position for use.
Figure 3 is a vertical section of Figure 1, shewing the vane spindle with a vane
attached to the upper end of such spindle.
Figure 4 is a sectional plan view taken on the line A-B of Figure 3.
Figure 5 is an elevation of the upper portion of the body of such cowls, and
Figure 6 is an elevation of the revoluble cylinder and cap of such cowls, and a
portion of the vane spindle, with a vane at its upper end.
On reference to the said drawings a represents the square base of such cowl, to
the upper portion of which base a cylindrical portion b is fixed or attached by any
suitable means, in the upper or circular enlarged portion c of which I have shewn a
number of square openings, slots or apertures d, to and around which portion c and
at a suitable distance therefrom a cylindrical portion or cylinder e is rigidly attached
or fixed by means of one or more angle iron straps or bars f, the revoluble cylinder g
when such cowls are put together for use loosely fitting within the enlarged portion c,
the ends of such cylinder being strengthened by means of metallic strips or bars h
rivetted or screwed thereto, the upper end of such cylinder y being a short distance
below the underside of the conical cap i, which cap is fixed by its surrounding
flange 2 to the upper edge or periphery of the cylinder c in which the openings or
apertures are formed. The lower end of the vertical galvanized iron or like
suitable spindle j bearing upon a glass, brass or like suitable footstep bearing within
the metallic loop or support k attached to the underside of the metallic strap, band
or bar which is attached at its ends to the underside of the upper portion of the
base at the upper end of such spindle passing through and being rigidly fixed to the
strengthening strips or bars h and through a glass, brass or like suitable guide
within the metallic loop or support m which is rigidly attached to the underside of
the conical cap i, the upper portion of such spindle having a copper, sheet zinc or
like suitable metallic vane n fixed or attached thereto.
It will be readily understood that gases and smoke ascending in such cowls will
escape through the aperture g² formed in the revoluble cylinder g through the
apertures & of the portion c which are opposite such aperture g² into the surrounding
space e between the said cylinder c and the cylindrical portion e, and ascend or
descend according to the direction and velocity of the wind out from such space
through the open ends e³ of the cylinder e into the surrounding atmosphere, whilst
rain is prevented from entering such cowls by the conical cap i and the cylindrical
guard e.

page_text: 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;
The construction of cowls or chimney pots of or from sheet zine, galvanized sheet
iron or like suitable material for use in preventing down draughts in, and preventing
rain from descending the chimney flues of dwelling-houses, factories and like places
by making the upper part of such cowls or chimney pots with a fixed slotted upper
portion with a surrounding circunferential guard or cylinder attached thereto by
means of angle iron or the like at a suitable distance therefrom so as to form a
surrounding space between such fixed slotted cylinder and such guard, the upper and
lower ends of such space being open to the atmosphere, a revoluble loosely fitting
cylinder within such fixed slotted portion having about a half of its circumferential
periphery cut away, such revoluble cylinder being rigidly attached or fixed by means
of transverse bars attached thereto to an upright or vertical metallic spindle, the lower
end of such spindle bearing in or upon a glass, brass or other suitable footstep bearing
fitted or fixed in the base portion of such cowls, and the upper end of such spindle
projecting a suitable distance above a conical or other suitably shaped cover or cap
which is fixed or attached by its outer periphery to the top end of the slotted fixed
cylinder, the upper end of such spindle having a suitably shape vane fixed or attached
thereto as herein substantially described, set forth and shewn on the drawings hereto
annexed.