An Improved Chimney Pot or Cowl and Downdraught Preventer and Ventilator and the like.
Year: 1895

page_text: Date of Application, 31st July, 1895
Complete Specification Left, 30th Apr., 1896-Accepted, 31st July, 1896
PROVISIONAL SPECIFICATION.
An Improved Chimney Pot or Cowl and Downdraught Preventer
and Ventilator and the like.
We FRANCIS JAMES BORLAND of 87 Buckingham Palace Road in the County of
London, Private Tutor and RICHARD EDWARD GOULD of 4 The Colonnade, Clapham
Common also in the County of London, Builder, do hereby declare the nature of this
invention to be as follows:-
We claim that this pot is a complete cure for smokey chimneys by preventing
downdraught and by creating an updraught. We prefer that the pot should be
constructed square or of about 12" x 9" base and 9" x 9" top and of a height according
to position or requirements. We prefer that the pot should be constructed with two
inlets on opposite sides, one slightly above the other, overlapping each other with
a detachable hinged flap supported by two grooves, at side of pot to each inlet
slanting inwards and upwards and moveable so as to allow of sweeping, falling back
into place by weighted rods (or otherwise) fixed on the curl of the flaps, and
surrounded on top by three or more louvres. The pot can be made in galvanized
iron, zinc, earthenware, terra cotta, or any other suitable material.
The advantages of the invention are (1) Prevention of downdraught and dis-
lodgement of soot by the rain. This is effected by the manner in which the flaps are
situated overlapping one another so that any wind or rain falling down the pot
will strike one or the other of the flaps and be carried off at the outlet at foot of same.
(2) Creation of an updraught. The wind when striking the side of pot enters the
inlet and following the direction of the flap is carried to the top of pot thus
creating the additional draught, likewise when the wind is blowing down the pot it
escapes, as stated above, from the inlets and thus creates a current by which the
smoke is caught in its ascent and carried out at the side inlets.
FRAS. J. BORLAND.
RICHARD EDWARD GOULD.
An Improved Chimney Pot or Cowl and Downdraught Preventer
and Ventilator and the like.
We FRANCIS JAMES BORLAND of 87 Buckingham Palace Road, S. W. Tutor and
RICHARD EDWARD GOULD of 29 Abbeyville Road, Clapham Park, S.W. 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 :-
The pot shown in the annexed drawing may be made in iron, zinc, terra cotta
or any other suitable material with the flaps of iron or any other suitable material.
The foot of the base may be square, or round to fit over round pots. The pot
may be constructed of any size & height according to requirements. On opposite
sides of the pot are two or more apertures (as circumstances may require) about
Prine 81

page_text: 6 inches, or less, in height and in the case of two flaps they may be situated one
about a quarter of the way up from the base of the pot and the other rather more
than half way up on the opposite side (lettered A. A. in drawing). At the lower
inner side of each aperture a flap, which is curled over at the inner edge &
weighted inside the curl, & which is, when in position shown in drawing, wide
enough to cover slightly more than half the width of the pot, is hinged which
rests on ridges which project inwards from the sides adjacent to the aperture, the
incline of the ridge being about 30° to the horizontal (lettered B. B. in the drawing).
The side of the pot immediately above the lower aperture is curved slightly
inwards while on the opposite side on a lovel with the aperture the side projects
outwards for about four inches or less up to the aperture on that side. Two or
more louvres may be placed round the top of the pot (lettered C. C. in drawing).
The pot may also he made on a very much smaller scale suitable for ventilation
purposes.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is―
Moveable flaps attached and working inside the pot so contrived as to allow sweep's
broom to pass up and down and to prevent the wind from blowing down the chimney,
the current of air escaping at apertures.
0771
FRAS. J. BORLAND.
R. E. GOULD.