Improvements in Chimney Pots for Preventing Down-draught or Improving the Up-draught.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots for Preventing Down-draught or
Improving the Up-draught.
I, AUGUSTUS ROBERT ROE, of Mount Pleasant Mills Framlingham, in the County
of Suffolk, Miller and Manufacturer of English Wheat Meal; 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 do not efficiently carry off the smoke from
the fire below and thus or otherwise to prevent and cure such defect:
According to my invention I make a chimney pot the lower portion of the shaft
of which is cylindrical, or other convenient shape, of equal or approximately equal
diameter throughout, but the upper portion of which is of considerably larger
diameter and at the top of the smaller portion I provide several, say for instance
four lateral openings, each of them preferably of about or nearly the same diameter
as the shaft or as nearly so as their number and arrangement will admit of, and
each such lateral opening I provide with a horizontal tubular outlet bent at right
angles in a horizontal direction.
The lower internal surface of such lateral openings have their inner ends
corresponding with the diameter of the said lower portion of the shaft, but the
inner ends of the upper portions of them correspond with the larger diameter of
the upper portion of the shaft so that any down draught or gust of wind or the
like entering at the top of the chimney may, without entering the smaller portion of
the shaft escape by one or more of such lateral openings.
It is generally found that chimneys which fail to carry off the smoke properly
are troublesome only-or are most troublesome when the wind is. in some definite
direction, and in view of this prefer to make the elbows of such lateral openings
face in the opposite direction, that is to say, two of the elbows (when there are
four of them) turn to the right and two to the left, and in fixing the pot on the
chimney I place it so that exterior ends of such lateral openings face away from the
wind when it is in the direction which causes the trouble.
The top of the chimney pot may preferably be surmounted by a cover carried on
supports which cover serves to exclude the rain and to give a more finished
appearance to the chimney and such cover may in some cases be made so as to shut
down closely on to the top of the chimney pot so that the whole of the smoke then
escapes by the lateral openings.
Dated the 26th day of September 1895.
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, of Mount Pleasant Mills, Framlingham, in the County
of Suffolk, Miller and Manufacturer of English Wheat Meal, 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 do not efficiently carry off the smoke from
the fire below and thus or otherwise to prevent and cure such defect.
In the accompanying sheet of drawings
Fig. 1, is an elevation of my improved chimney pot.
Fig: 2 is a vertical section, and Fig. 3, is a horizontal section on the lines x, y,
in Fig. 1.
According to my invention I make a chimney pot the lower portion a of the shaft
of which is cylindrical, or other convenient shape, of equal or approximately equal
'diameter throughout, but the upper portion b of which is of considerably larger
diameter, and the top of the smaller portion I provide several, say for instance four
lateral openings, each of them preferably of about or nearly the same diameter as the
shaft or as nearly so as their number and arrangements will admit of, and each such
lateral openings I provide with a horizontal tubular outlet c bent at right angles in a
horizontal direction.
The lower internal surface of such lateral openings have their inner ends
corresponding with the diameter of the said lower portion a of the shaft, but the
inner ends of the upper portions of them correspond with the larger diameter of
the upper portion 6 of the shaft so that any down draught or gust of wind or the
like entering at the top of the chimney may, without entering the smaller portion of
the shaft escape by one or more of such lateral openings.
It is generally found that chimneys which fail to carry off the smoke properly
are troublesome only-or are most troublesome when the wind is in some definite
direction, and in view of this I prefer to make the elbows of such lateral openings
face in the opposite direction, that is to say, two of the elbows (when there are four of
them) turn to the right and two to the left as represented in the drawings and in fixing
the pot on the chimney I place it so that the exterior or open ends of such lateral
outlets face away from the wind when it is in the direction which generally causes
the trouble.
The top of the chimney pot may preferably be surmounted by a cover d carried on
supports e which cover serves to exclude the rain and to give a more finished
appearance to the chimney, and such cover may in some cases be made so as to shut
down closely on the top of the chimney pot so that the whole of the smoke then
escapes by the lateral openings.
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 improvements in chimney pots for preventing down draught or improving
the up draught substantially as herein before described.
2. Chimney pots with lateral horizontal tubular outlets, each outlet having a right
angle elbow bend, the portion of the vertical shaft above the lateral outlets being of
larger diameter than the portion below them, constructed and arranged substantially
as and for the purposes set forth.
3. The combination in a chimney pot of the horizontal elbowed outlet shafts c, c, c, c,

page_text: the shaft a and b, the portion a being of less diameter than the portion b, and either
with or without a cover d with supports e all substantially as described and for the
purposes set forth.
Dated the ofth
C
1800
NEWNHAM BROWNE,
Agent for the Applicant.