Year: 1886

page_text: Date of Application, 3rd Nov., 1886
Complete Left, 30th July, 1887.
Complete Accepted, 11th Oct, 1887
I DAVID WILKINS of Bellona House, Tenby, in the County of Pembroke, Joiner
and Cabinet Maker, do hereby declare the nature of this invention to be as follows:-
This invention is intended for the prevention of down draughts in chimneys and
ventilators. The chimney top consists of an inner and outer case, the inner case
reaching about halfway up the outer case; a space is left between these cases which
forms an air chamber for the purpose of receiving the smoke and down draught
which is directed into the chamber by means of the conical shaped cover over the
inner case, & then conveyed to the outer air through an opening left round the base of
the outer case.
This inner case is surmounted by a conical shaped cover which is fastened by means
of two or more rods to a ring fitted round the inner case.
These rods will be carried up above the inner case to a height sufficient to form a
passage for the up draught to escape when the ring is at the base.
When the chimney is cleaned this cover can be raised by the brush, carrying with
it the ring to which it is fixed, and also cleaning the space between the inner and outer
cases; the cover falling back to its place when the brush is withdrawn.
To be made of sheet iron or other suitable material.
D
1
1000

page_text: DAVID WILKINS Joiner and Cabinet Maker Bellona House Frogmore Street Tenby,
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:-
This invention is intended for the prevention of down draught in chimneys and
ventilators. The chimney top consists of an inner and an outer case; the inner case
reaching about half way up the outer case-a space is left between these cases which
form an air chamber for the purpose of receiving the smoke and down draught, which
is directed into the chamber by means of a conical shaped cover over the inner case-
and then conveyed to the outer air through an opening left round the base of the
outer case this inner case is surmounted by a conical shaped cover which is fastened
by means of two or more rods to a ring fitted round the inner case. These rods will
be carried up above the inner case to a height sufficient to form a passage for the up
draught to escape when the ring is at the base.
When the chimney is cleaned this cover can be raised by the brush carrying with it
the ring to which it is fastened-and also cleaning the space between the inner and
outer cases-The cover falling back to its place when the brush is withdrawn.
The fittings in the space o to o carries the smoke and down draughts into the outer
air and is the inverter of up draughts as shown on drawing-The chimney top can be
constructed round, square or in any other form―The outer case g g can be made
straight or enlarged opposite n or narrowed as shown on drawing-The ring-d-d-
can be made in two parts to insert wire or other material so as to form a brush for the
better cleaning of the space between the two cases.
The socket A to be fitted in flue can be made to any depth and fitted with tubes to
receive rods (e) which in this case will pass through the ring-(d)-into the tubes-
when raised with the brush will afford greater length at the top of the conical cover.
To be made of sheet iron or other suitable material.
a a-socket fitted in flue-bb-Flange to rest on bricks-cc:-Bracket holding
outer case-d d-Ring fitted round inner case-e:-Guide rod fastened to ring-
ff-Inner case-gg-Outer case-
-H:-Conical Cap-i:-Rod in centre of
cover JJ-outlet at bottom of outer case for down draught. K:-Bracket holding
inner and outer case through which guide rod passes. L-Top of inner case flanged
outwards. M. M:-Dotted lines showing masonry-n :-Space to allow up draught
to escape o o-Space between inner and outer cases from flange upwards.

page_text: Having now particularly described and ascertained of my said invention and in
what manner the same is to be performed I declare that what I claim is :—
(1) All the interior fittings from o too with the raising of outer case at the base.
(2) The right of constructing this chimney pot round, square or in any other form.
(3) The right to make the outer case-9-g-straight or enlarged opposite n or
narrowed as shown on drawing-To flute or ornament in the best means I can devise-
to cover outlet at base of outer case with perforated or oblonged holed iron.
(4) The right to make the ring-(d) in two parts-to insert wire or other material
to form a brush.
(5) The right to make the socket in flue to any depth-and to fit tubes in it to
receive rods which will pass through the ring into the tubes.
Dated this 20th do
T.1 1000
DAVID WILKINS.