Improvements in or in Connection with Chimneys or Ventuating Shafts.
Year: 1886

page_text: [ Improvements in or in Connection with Chimneys or Ventuating
Shafts.
uft.
I, EDWARD PIERCE HOUGHTON, of 20 Seel Street, Liverpool, in the County
of Lancaster, Wine and Spirit Merchant, do hereby declare the, nature. of this
invention to be as follows:-
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This invention has
on has for its object the prevention of down-draughts in chimneya
without injuring the up-draught, but in some instances actually helping it, and
consists in making side openings in the chimney at opposite sides; but at different
levels with baffle plates, straight, bent or curved, extending more than half across
the chinney, sloping down into the bottoms of these openings. In order to enable
the chimney to be swept, these plates can be hinged and lie on skeleton frames, or
they can be made to draw out like dampers; by therefore pulling up the 'first
described plate against the orifice by means of a chain, or pulling out the damper
like plates, the passage is unobstructed to a brush. When however: the plates are
in position, the wind blowing down is at once deflected down one or other of the
spouts formed by the plates and orifices, and out at the side, while side winds are
deflected up assisting the draught. Small soot catchers can be placed if required
on each plate or orifice to catch any soot 'that falls 'down.
1.J
This invention can be applied to chimney tops and other terminals or to upcast
ventilating shafts. "In the case of tops, they could be made in 'two parts and
hinged together. The lower orifice can be guarded'in any suitable manner!
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page_text: Improvements in or in Connection with Chimneys or Ventilating
Shafts.
I, EDWARD PIERCE HOUGHTON, of 20 Seel Street, Liverpool, in the County of
Lancaster, Wine and Spirit Merchant, 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 the prevention of a down draught in chimney and
ventilating shafts and the creation of an up current therein.
It consists in forming the chimney top, flue or shaft with side openings, louvres,
baffle plates or inclined plates projecting upwards internally from the underside of
the opening a certain distance, extending to or past the centre of the structure.
Referring to the annexed drawings.
Figure 1. is an elevation.
Figure 2. a vertical section of a metal chimney top constructed in accordance
with my invention.
A is the casing or wall of the structure B is the exit opening at top. C are
the openings in the sides. D the inclined plates or louvres projecting there from.
The chimney is preferably constructed rectangular as shown and the openings C
placed alternately at the sides, though the position of them may be varied so long
as they are so placed, that the plates D do not interfere one with another. They
must be placed at sufficient distance above one another to allow the smoke free
exit. The plates D are placed as shown inclined upwards and projecting inwards,
from the sides, until they reach the centre or somewhat past it, and the smoke or
draught passing upward passes round the end of each successive plate. In case of
a return draught it strikes the upper side of the plates D and is by them deflected
through the openings C to the outer air, instead of being allowed to pass back
down the flue or shaft. Should it be found that the inclined plates projecting
inwards from a straight wall or side, contracted the passage too much, the sides of
the structure may be made curved or bulging outward opposite the ends of the
inclined plates and thus increase the internal area of the flue making it about
equal at all points.
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A current or wind striking against the chimney is deflected in an upward
direction thus creating an up current in the shaft or flue. In order to prevent a
current passing through one of the holes C and being deflected downward by the
underside of the plate D which it first meets, I prefer to make the edges of the
plates D curved or bent at d so as to direct an upward current to the opening
above. The accompanying illustration will show the principle, and I do not limit
myself to any size or number of the openings, nor to whether they shall be placed
one or two on one side and one or two on the opposite side, or put alternately on
opposite sides, nor to any particular shape or size of chimney top, which may be
made with or without a wind guard or guards over one or more of the side holes
and over the top of the chimney if desired. In order to enable the chimney to be
swept these plates can be hinged, or they may be fixed in grooves so as to draw
out like dampers, by therefore pulling up the plates D against the orifice by means

page_text: of a chain or otherwise pulling them out like a damper, the passage is unobstructed
for a brush. Chimney tops or terminals for shafts constructed in accordance with
the invention may be made of metal, earthenware or metal and earthenware, or
other suitable material and of any required size or shape.
The invention is not however limited to tops or terminals, as it can be applied
to the shafts or flues, the deflecting plates being built into the walls of same.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I wish it to be
understood that I do not claim broadly the use of louvres, or reflecting boards in
chimney tops, but that what I claim is:
A chimney shaft or flue having side openings formed therein with inclined
deflecting plates projecting upwards, internally from such openings and extending
to or past the centre of the structure, so placed as to allow the upward passage of
a draught or current past them, and to deflect a downward current through the
openings, substantially as described. .