Improvements in Chimney Pots and Ventilating Caps.
Year: 1894

page_text: Date of Application, 7th Mar., 1894
Complete Specification Left, 30th Nov., 1894-Accepted, 7th Mar., 1895
'
PROVISIONAL SPECIFICATION.
Improvements in Chimney Pots and Ventilating Caps.
We GEORGE LEONARD LAVINGTON, of 19, St. George's Road, Gentleman, and
EDWIN ALFRED WRIGHT, of 8, St. George's Market, Builder, both of Upton Park,
in the County of Essex, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to improvements in chimney pots and ventilating caps, the
object of our invention being to provide a chimney pot or ventilating cap which
will produce a considerable suction in the chimney or shaft so that the smoke or air
may be quickly exhausted therefrom the arrangement employed preventing any
down draught in the chimney or shaft.
According to one form of our invention we form in the walls of the pot a number
of openings which communicate with nozzles preferably having reduced ends which
are directed upwardly inside the pot while the openings on the outside of same may
have flared mouths the object being to direct currents of air into the pot in an
upward direction so as to cause a suction therein. To further assist in this we
arrange about the base of the pot an opening or openings which communicates with
an air pipe or pipes of small diameter which pass down into the chimney or shaft
for a greater or less distance such pipe or pipes terminating at one end in a mouth
or mouths which are directed upwardly so as to cause an upward draught of air in
the chimney or flue the other end being preferably provided with a flared mouth or
mouths to catch the wind. Where several of these air pipes are employed they
may be of different lengths so that the currents of air are received at different
points in the chimney.
To further assist in preventing a down draught the interior of the chimney pot
may be provided with one or more rims or baffles adapted to catch and break up
any downward currents of air while the pot may also carry an inverted saucer or a
cone loosely hung on a rod or support over the opening so that it will be pressed
down by the wind on the side which the latter comes from and be correspondingly
lifted up on the other.
Dated the 7th day of March 1894
Improvements in Chimney Pots and Ventilating Caps.
GEORGE LEONARD LAVINGTON 19 St. George's Road, Forest Gate, Essex
Gentleman EDWIN ALFRED WRIGHT 51 St. George's Square, Forest Gate,
Essex Builder 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 :-
Our invention relates to a chimney ventilator which will create eight up currents
of air at different intervals within the chimney, having between the chimney stack &

page_text: pot, openings, or air passages, constructed in an oblong shape on all four sides
of the stack, for the purpose of guiding wind into their respective tubes or
shafts B, which are connected to them, & which lead down each side of the
interior of the chimney close to the brickwork as far as the fire grate if deemed
necessary. The ends that direct downwards of the said tubes or shafts, will be
made to turn short upwards in two parts C, by this means the wind will be guided
by the openings or air passages at the top of the stack down the tubes or shafts B,
& then its course will be directed upwards, as it passes through the short
upturned ends C, carrying with it foul air & smoke. That part of the openings or
air passages E, which rests upon the brickwork at the top of the stack, will have a
narrow slot F, cut across it, to allow rain water to drain through, which may drift
into the said openings or air passages. A small hole D, will be also punched in
the bend of those parts C, which are made to turn upwards at the ends of the tubes
or shafts for the purpose of insuring them being kept drained; there will also be a
slanting piece G, over the mouth or ends of these short upturned tubes, for the
purpose of directing the air from the brickwork, into the centre of the flue, &
also to prevent any corrosion from downfalling soot. Placed upon the top of the
openings or air passages, & fixed thereto, will be a pot or cap H, of usual shape,
having within it two baffles K, for the purpose of breaking any down draught, the
opening or nozzle parts turning upwards will not be adopted not being found
practicable.
Having now particularly described & ascertained the nature of our said inven-
tion & in what manner the same is to be performed, we declare that what we
claim is :-
(1.) A chimney pot or ventilating cap which will create eight up currents of air
within the chimney by means of openings or air passages constructed between the
chimney stack & pot, which guide wind into tubes or shafts, which are connected
with them, & lead down each side the interior of the chimney, the ends of
which turn short upwards for the purpose of directing the course of air up through
the chimney.
Dated this 26th day of February 1895.
GEORGE LEONARD LAVINGTON.
EDWIN ALFRED WRIGHT.