A COMBINED DEFLECTING AND INJECTING EXHAUST ROOF VENTILATOR AND CHIMNEY COWL
Year: 1883

page_text: LETTERS PATENT to Richard Oakley of N° 235 High Holborn in the County
of Middlesex Ventilating Engineer for an Invention of "A COMBINED
DEFLECTING AND INJECTING EXHAUST ROOF VENTILATOR AND CHIMNEY
COWL"
PROVISIONAL SPECIFICATION left by the said Richard Oakley at the Office
of the Commissioners of Patents on the 12th April 1883.
RICHARD OAKLEY of 235 High Holborn in the County of Middlesex Ventilating
Engineer A COMBINED DEFLECTING AND INJECTING EXHAUST ROOF VENTILATOR
AND CHIMNEY COWL
It consists of 4 or more triangular plates of any material fixed to a frame of any
material, the said plates sloping inwards and upwards and of 4 or more other plates
of similar shape sloping inwards and downwards and of 4 or more other vertical
triangular plates all the plates whether horizontal or vertical converging to a
common centre the 4 vertical plates forming with the horizontal plates above and
below as many compartments and of a tube square or round divided into four or
more compartments according to the number of compartments in the head above
described this tube descends vertically from the common centre one compartment
in the tube being in connection with a corresponding compartment in the head this
tube is closed at the bottom excepting a small opening with a very small pipe
attached in the form of a letter
at the bottom of same to carry off water
driven in at the common centre and excepting two nozzles of an inch or more or
less in diameter fixed in the side of each such compartment of the descending tube.
These nozzles discharge the air driven down from the head in an upward direction
into the main shaft the said head and descending tube are fixed in a main shaft
which may be three or four times the diameter of the descending shaft. This shaft
is left open below for the vitiated air of the building to which it is attached to
escape by and is open at the top also but is at the top at a certain distance say
5 inches or more according to the size of the instrument connected by stays
with the head above described. Furthermore in order to protect this open

page_text: Брасе
from the entrance of external air and to facilitate the outcome of the vitiated
air it is surrounded by four circular deflecting guards above and four below with
one double central guard common to both top and bottom, these guards may be
made of any material and of any depths from 1 inch to 6 inches each, the first of
the upper guards is attached to the base of the head above described and is intended
to deflect a current entering at the top, it is set at any angle less than a right
angle and the other three guards at a similar angle or even less angle than the
first a distance of at least half an inch being preserved between each guard, the
central double guard appears between the outside upper and lower guards and
the angle edge of it is flush with the opening of those two outside guards a side
wind striking on this is deflected both upwards and downwards and passes through
the upper and lower inner guards, the first lower guard is attached to the top of
the main shaft from which it slopes upwards at any angle less than right
angle, the other lower guards preserve the same relativo distances to the first lower
guard as the other upper guards do to the first upper guard aforesaid, and are set
at corresponding angles-the object of the lower guards is to deflect currents
from below and turn them upwards so as to pass between the upper guards. The
special feature of the Ventilator is the combination of the two systems of deflection
and injection
By a modification of this invention it can be used as a Chimney Cowl in this
case the four injection tubes are brought down outside the shaft and enter a few
inches above the base, these tubes are trumpet mouthed at the top and turn
upwards at the bottom into the shaft-A simple cone protects the mouth of the
shaft deflecting a down current and one guard attached to the mouth of the main
shaft deflects an up current, over these two deflecting surfaces and at a distance
of two or more inches from them and at the same angle is placed an outer guard
sloping up above the cone upwards and down to the main shaft downwards into
this latter division of the guard the trumpet mouths of the injection tubes run.
The angle of these guards is set exactly opposite the centre of the space between
the base of the cone and the edge of the guard at top of the main shaft and deflects
a horizontal current. This Cowl may also be made without the outer guards
around the head.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Oakley in the Great Seal Patent Office on the 12th October
1883.
RICHARD OAKLEY of 235 High Holborn in the County of Middlesex Ventilating
Engineer "A COMBINED DEFLECTING AND INJECTING EXHAUST ROOF VENTILATOR
AND CHIMNEY COWL
"
The Eolus combined deflecting and injecting exhaust roof ventilator and
chimney cowl which I have invented are shown by the annexed drawings.
Figure 1 is an elevation and Figure 2 is a vertical section of the ventilator.
It consists of four or more triangular plates a of any material fixed to a frame
of any material, tho said plates sloping inwards and upwards. And of four or
more other plates 6 of similar shape sloping inwards and downwards. And of four
or more other vertical triangular plates call the plates whether horizontal or
vertical converging to a common centre the four vertical plates forming with the
horizontal plates above and below as many compartments. And of a tube d square
or round divided into four or more compartiments according to the number of
compartments in the head above described. This tube descends vertically from
the common centre one compartment in the tube being in connection with a
corresponding compartment in the head. This tube is closed at the bottom
excepting a small opening with a very small pipe e attached in the form of a
letter
at the bottom of sanie to carry off water driven in at the common
centre and excepting two nozzles ff of an inch or more or less in diameter fixed
in the side of each such compartment of the descending tube. These nozzles
discharge the air driven down from the head in an upward direction into the main
shaft g. The said head and descending tube are fixed in a main shaft g wbich
may be three or four times the diameter of the descending shaft d. The shaft g
is left open below for the vitiated air of the building to which it is attached to
escape by and is open at the top also but is at the top at a certain distance say five
inches or more according to the size of the instrument connected by stays with
the head consisting of the plates a, b, c as above described. Furthermore in order
to protect this open space from the entrance of external air and to facilitate the
outcome of the vitiated air it is surrounded by four circular deflecting guards
H', H, H H above and four marked h¹, h2, h3, h4 below with one double central
guard H h common to both top and bottom. These guards may be made of any
material and of any depths from one inch to six inches each. The first of the
upper guards H¹ is attached to the base of the head above described and is intended
to deflect a current entering at the top, it is set at any angle less than a right
angle and the other three guards at a similar angle or even less angle than the first
a distance of at least half an inch being preserved between each guard. The
central double guard appears between the outside upper and lower guards and the
angle edge of it is flush with the opening of those two outside guards. A side
wind striking on this is deflected both upwards and downwards and passes through
the upper and lower inner guards. The first lower guard h¹ is attached to the top
of the main shaft from which it slopes upwards at any angle less than a right
angle, the other lower guards preserve the same relative distances to the first lower
guard as the other upper guards do to the first upper guard aforesaid, and are sot
at corresponding angles. The object of the lower guards is to deflect currents from
below and turn them upwards so as to pass between the upper guards. The
special feature of this ventilator is the combination of the two systems of deflection
and injection,

page_text: By a modification of this invention it can be used as a chimney cowl. The
modified arrangement is represented in elevation by Figure 3 and Figures 4 and 5
are vertical sections of the same. In this case the four injection tubes i, i, i, i are
brought down outside the shaft k and enter a few inches above the base. These
tubes are trumpet mouthed at the top at and turn upwards at the bottom into
the shaft. A simple cone protects the mouth of the shaft deflecting a down
current and one guard m attached to the mouth of the main shaft deflects an up-
current. Over these two deflecting surfaces and at a distance of two or more
inches from them and at the same angle is placed an outer guard o sloping up
above the cone upwards and down to the main shaft downwards. Into this latter
division of the guard the trumpet mouths of the injection tubes run.
The angle
of these guards is set exactly opposite the centre of the space between the base of
the cone and the edge of the guard at top of the main shaft and deflects a hori-
zontal current. An additional guard may also with advantage be applied at p_to
deflect any current formed by rebound from the internal angle of the guard o.
This cowl may also be made without the outer guards around the head.
What I clain is the Eolus combined deflecting and injecting exhaust roof
ventilator substantially as described.
I also claim the modifications thereof adapting it as a chimney cowl.
In witness whereof I the said Richard Oakley have hereunto set my hand
and seal this Twelfth day of October in the year of our Lord One thousand
eight hundred and eighty three.
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