Improvements in Chimney Pots for Preventing Down Draught or Improving the Up Draught.
Year: 1897

page_text: Date of Application, 23rd Sept., 1897
Complete Specification Left, 23rd June, 1898-Accepted, 23rd July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots for Preventing Down Draught or
Improving the Up Draught.
I, AUGUSTUS ROBERT ROE, Managing Director of Roe's Hygienic Company
Limited, of 24, Castle Street East, Oxford Street, in the County of London, Manu-
facturers, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to prevent down draught or otherwise to promote
an upward draught in chimneys which otherwise do not effectually carry off, the
smoke from the fire below, and thus or otherwise to prevent or cure such defect
and, this without preventing the efficient and effective use of the sweep's brush.
According to my invention I make the chimney pot with several, preferably
four, lateral openings, which are so covered as to let out the smoke in a horizontal
direction and tangentially to the surface of the cylindrical portion of "the pot.
The outlets are preferably but not necessarily made when there are four of
them, to face two to the right and two to the left, in such wise that if there is one
direction (which there generally is) from which the wind is most troublesome in
producing down draught, that side of the pot from which the outlets are turned,
may be placed to face such direction.
The internal surfaces of the outlets are made to slope downwards towards the
outlet preferably in a gentle curve so as to offer but little hold for the soot to
lodge on and so that any soot which does lodge there may be easily removed by
the flexible fibres of the sweep's brush.
In order that the top of the pot may be covered and yet offer no obstruction to
the brush I may construct it with a movable cover which allows the brush to
pass out at top and closes again when the brush is withdrawn into the chimney.
For this purpose I form the upper portion of the pot (above the before named
openings) with several preferably four lateral openings, the portion above which
forms a ring to one side of which I hinge a cover, of shape and size to rest on the
ring and form a complete cover for the whole, at or near to the hinge we fix to
the cover a tail piece in such manner that when the cover is at rest on the ring
the end of the tail piece is out of the line of the shaft of the pot, but when the cover is
raised and turned up on its hinge, as by the sweep's brush, the tail piece passes
inwards and upwards under the brush so as, when the brush is being drawn back,
to be engaged thereby and to be drawn downwards and so to turn the cover back
over the pot.
I prefer to surround the whole with a screen or covering, open both at top and at
bottom, of any convenient or ornamental shape, such screen preferably extending
downwards a little below the level of the before mentioned, outlets, and upwards
to or nearly to the level of the cover, such screen may conveniently be carried on
supports attached to the fixed parts of the pot.
Dated the Twenty-third day of September 1897.
NEWNHAM BROWNE,
Agent for the Applicant.

page_text: Improvements in Chimney Pots for Preventing Down Draught or
Improving the Up Draught.
I, AUGUSTUS ROBERT ROE, Managing Director of Roe's Hygienic Company
Limited, of 24, Castle Street East, Oxford Street, in the County of London,
Manufacturers, 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:-
The object of this invention is to prevent down-draught or otherwise to promote
an upward draught in chimneys which otherwise do not effectually carry off the
smoke from the fire below, and thus or otherwise to prevent or cure such defect.
I will describe my invention by reference to the accompanying drawings in
which:-
Figs. 1 and 2 are respectively an elevation and a plan of my improved chimney
pot.
Fig. 3 is a sectional elevation and
Figs. 4 and 5 are horizontal sections taken respectively on the lines 4–4 and
5-5 of Figs. 1 and 3.
Like letters of reference indicate like parts throughout the drawings.
According to my invention I make the cylindrical or substantially cylindrical
portion A of the chimney pot, which portion is hereinafter referred to as the "pot,'
with several lateral openings a a', preferably four as shown in the drawings, which
are so covered as to cause the smoke to pass out in a horizontal direction and
tangentially to the outer surface of the pot A.
The outlets a a¹ when there are four of them, are preferably, but not necessarily
made, by means of shields b 61 covering them to face two, say those marked a,
to the right, and two, say those marked a¹, to the left as shown clearly in Fig. 5,
in such wise that if there is one direction (which there generally is) from which
the wind is most troublesome in producing down-draught, that side of the pot
at which are presented the closed sides or backs of the shields b b1 (for example
the top side of Fig. 5) may be placed to face such direction.
The internal surfaces of the outlets a a¹ and shields 6 6' are made to slope
downwards towards the outlet or open sides of the shields, preferably in a gentle
curve as shown for example in Fig. 3, so as to offer but little hold for the soot
to lodge on and so that any soot which does lodge there may be easily removed by
the flexible fibres of the sweep's brush.
Above the before described outlets a a¹ I provide in the pot A several, preferably
four, lateral openings a2 and above these openings I provide a cover a³ which
closes in the top of the said pot.
I prefer to surround the before described devices with a screen or cover C open
at both top and bottom and of any convenient or ornamental shape, such screen
preferably extending downwards a little below the level of the outlets a, a¹, and
upwards to, or nearly to, the level of the top of the cover a³, and preferably
rather higher than is represented in the drawings, and being conveniently sup
ported by lugs c (which are formed on the said screen) resting on the top of the
before described shields b b¹.
In the drawings I have represented my improved chimney pot as though it
were constructed of earthenware or like material and with the cover as formed in
one part therewith but it is to be understood that it may be formed of metal
and that the cover may be formed as a separate part which may be readily remov
able from the chimney pot for facilitating the sweeping of the chimney.

page_text: Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:-
1. In a chimney pot the combination with an opening such as a or a¹ of a cover
or shield for such opening such as 6 having its internal surface sloping or curved
downwards towards the outlet side of the said cover or shield substantially as
hereinbefore described with reference to the accompanying drawings.
2. The combination with a chimney pot having a number of openings and
covers or shields each arranged as set forth in the preceding claim, of a screen or
cover such as C surrounding the said openings and covers or shields substantially
as hereinbefore described with reference to the accompanying drawings.
3. The combination and arrangement of parts constituting the complete chimney
pot substantially as herein before described and illustrated in the accompanying
drawings.
Dated the 23rd day of June 1898.
NEWNHAM BROWNE
Agent for the Applicant.