Improvements in or relating to Ventilating Cowls or Caps.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Ventilating Cowls or Caps.
I, CHARLES HOSKYNS 11 St. Andrews Place Bradford York, Minister of the
Gospel, do hereby declare the nature of this invention to be as follows:
This invention relates to improvements in or relating to ventilating cowls or
caps, and consists in supporting the cowl so that it may rock or tip when acted
upon by the wind so as to cause an up or down draught in the shaft or chimney
on which it is placed according to the direction of the tipping of the cowl or cap.
The cowl or cap is provided with vanes which are so arranged as to cause the cowl
or cap to tip or rock in the required dircction. Thus when a down draught is
required, the vanes are arranged so that the cowl tips so as to receive the wind and
allow it to pass down the shaft or chimney and when an up draught is required
the vanes are arranged so that the cowl tips so that the wind strikes same and
creates an exhausting or suction effect and withdraws air from the shaft or
chimney, thus creating an up draught.
Dated thin 7th c
100%
I, CHARLES HOSKYNS 11 St. Andrews Place Bradford, Minister of the Gospel,
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 or relating to ventilating cowls or
caps, and consists in supporting the cowl or cap, so that it may rock or tip when
acted upon by the air or wind, so as to cause an up or down draught in the shaft or
chimney, on which it is placed according to the direction of the tipping of the
cowl or cap.
The cowl or cap is provided with vanes which are so arranged as to cause the
cowl or cap to tip or rock in the required direction; thus when a down draught is
required the vanes are arranged so that the cowl tips so as to receive the air or
wind and allow it to pass down the shaft or chimney, and when an up draught is
required, the vanes are arranged so that the cowl tips in such a direction that the
air or wind striking same creates an exhausting or suction effect, and withdraws
air or other gas from the shaft or chimney, thus creating an up draught.

page_text: In order that my invention may be fully understood, I will now refer to the
annexed drawings, in which :-
Figure 1. is a sectional elevation of a cowl or cap arranged so as to cause a down
draught.
Figure 2. is a sectional elevation of a cowl or cap arranged so as to create an
up-draught.
Referring to Figure 1, a is the cowl or cap which is carried upon the ball and
socket joint b so that it is free to tip or rock according to the direction in which
the air or wind acts upon it. care vanes fixed upon the cowl which is so arranged
that the action of the air or wind causes it to tip as shewn, thus causing some of
the air or wind to pass down the shaft 7, the cowl being so balanced that the
action of the air or wind causes it to tip in the direction shewn.
In Figure 2, the cowl is provided with the vanes e as shewn, and is so balanced
that the action of air or wind will cause it to tip as shewn and the passage of the
air or wind tends to create an updraught in the shaft d owing to the exhausting
or suction effect created by the passage of the air or wind and in this arrangement
besides the creation of an up-draught, a down-draught is avoided, thus preventing
what is called a blow-down in chimneys, and so avoiding the escape of smoke into
a room from a fireplace.
The support may be so arranged as to be adjusted in the chimney or shaft so
that the cowl or cap may be brought nearer to or removed from the top of the
chimney as required.
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. The combined construction and arrangement of the various parts substan-
tially as described and illustrated herein.
2. A cowl or cap movably supported so as to be free to tip in the required direc-
tion under the action of the air or wind currents, and having vanes upon same,
the cowl or cap being so balanced as to tip in a direction which will produce an
up or down-draught as required in the chimney or shaft upon which it is carried.
Dated this 18th day of August 1897.
E. EATON,
Agent for Applicant.