Improvements in Chimney Cowls.
Year: 1894

page_text: Date of Application, 27th Oct., 1894
Complete Specification Left, 10th June, 1895-Accepted, 13th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Chimney Cowls.
We GEORGE NEWELL MILWARD, of The Hollies, Antrobus Road, Handsworth,
Traveller, and BENJAMIN NICKLIN, Despatch Works, High Park Road,
Smethwick, Manufacturer, both in the County of Stafford, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in the construction and arrangement of
chimney cowls, and consists as follows:-
At the top of the chimney pipe we provide a bridge or bow springing from the
one side upwards and over to the other side in a somewhat half circular form, and
at the top or crown of this bridge is fixed an upright pillar whose upper end forms
the pivot upon which the revolving cowl is carried. By this means the usual
horizontal cross bar is dispensed with and thus no impediment thereby is.
presented to the rising of the smoke while also the sweepers' brush is permitted to
rise much higher than usual, and consequently ensuring a more perfect removal of
soot and dirt.
The cowl is much of the ordinary shape except as herein stated, that is, it is
made with an opening at an angle to the uptake. At the rear of the cowl we
make a smaller opening which is preferably of a bellmouthed shape. Within the
cowl and just below the rear opening a shield is fixed which inclines somewhat in
an upward direction, and extends about half way more or less forward over the
uptake, so that a current of air passing inwards through the small opening is
prevented from passing down the uptake, but is carried straight through the main
outlet, and in doing so carries with it the ascending smoke, thus increasing the
suction and upward pull of the smoke. The forward edge of this shield may be
serrated or otherwise broken in its outline so as to break up the current passing
through. In the forward part, of the cowl we now provide a further support
therefrom to the central post or pivot by means of a horizontal bow shaped
bearing bracket which engages with the said post immediately above the bridge
piece beforementioned, or if desired such bearing may be formed upon or carried
upon the shield aforesaid.
Dated this 26th day of October 1894
CHARLES T. POWELL,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Chimney Cowls.
We GEORGE NEWELL MILWARD, of The Hollies, Antrobus Road, Handsworth,
Traveller, and BENJAMIN NICKLIN, Despatch Works, High Park Road,
Smethwick, Manufacturer, both in the County of Stafford, 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 relates to improvements in the construction and arrangement of
chimney cowls, and such like ventilators, and consists as follows:-
In order to clearly explain this our invention, we have appended hereunto an
illustrated sheet of drawings upon which are figures and numbers of reference,
similar numbers referring throughout the several views to the same thing or part,
and in which :-
Fio 1 is a general side view of the cowl.

page_text: Fig. 2, is a part side, sectional view of the cowl.
Fig. 3, is a sectional plan view, upon line AB. (Fig. 2).
Fig. 4, is a vertical sectional. view upon, line C-D (Fig. 2).
Fig. 5, is a detailed plan view of the vane.
8, is the chimney pipe, 9, the revolving cowl, and 10, the vane.
At the top of the chimney pipe 8, we provide a bridge or bow 11, springing
from the one side upwards and over to the other side in a somewhat half circular
form, and at the top or crown of this bridge is fixed an upright pillar 12, whose
upper end forms the pivot upon which the revolving cowl 9, is carried. The
pillar 12, is screw threaded part of its length, and is passed through a hole in the
bracket 13, when the nut 14, is screwed on, so that while the cowl is free to revolve,
it cannot be removed by wind or otherwise without the wilful unscrewing of the
nut 14.
At the rear of the cowl we make openings 15, and 16, 16. Without the cowl
and just below the rear opening 15, a shield 17, is fixed which inclines somewhat
in an upward direction, and extends about half way or more forward over the
uptake 18, so that a current of air passing inwards through the small opening is
prevented from passing down the uptake, but is carried straight through the main
outlet, in the direction of the arrow 19, and in doing so carries with it the
ascending smoke, thus increasing the suction and upward pull of the smoke. The
forward edge of this shield may be serrated or otherwise broken in its outline so
as to break up the current passing through. The openings 16, also afford entrance
for currents of air as indicated by the arrows 20, which assist the carrying
forward of the smoke. These openings 16, also serve usefully as ready outlets
for the smoke when by sudden variations of the wind, the smoke is driven back
into the mouth of the cowl, as shown by arrows 21. In such a case part of the
return smoke would also pass through the opening 15. In the forward part of
the cowl, we now provide a further support therefrom to the central post or pivot
by means of a horizontal bow shaped bearing bracket 22 which engages with the
said post immediately above the bridge piece 11, or if desired such bearing 22,
may be formed upon or carried upon the shield aforesaid.
The revolving of the cowl is governed by the vane 10, (see also Fig. 5) whose
forward end is preferably made double such two parts 23, 23, being fixed at any
desirable angle to each other so that the wind shall more readily act thereon to
determine and steady its position.
Having now particularly described and ascertained the nature of, this, our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. In a chimney cowl, the combination with the uptake pipe 8, revolving
cowl 9, of the rear openings 15, and 16, and shield 17, substantially as set forth
and shown.
2. In a chimney cowl, the combination with the uptake pipe 8, bridge piece 11,
and pillar 12, of the cowl 9 having the bracket 22, substantially as set forth and
shown.
3. In a.chimney cowl the combination with the pipe 8, revolving cowl 9, bridge
piece 11, and bracket 13, of the pillar 12, having the screw nut 14, substantially
as set forth and shown.
4. The general combination and arrangement of the parts herein described and
illustrated, constituting these, our improvements in chimney cowls.
Dated this 7th day of June 1895.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicants' Agent.