IMPROVEMENTS IN CHIMNEY TOPS
Year: 1884

page_text: I, CHARLES HENRY RILEY of Huddersfield in the County of York, Joiner and
Builder do hereby declare the nature of my Invention for "IMPROVEMENTS IN
CHIMNEY TOPS" to be as follows:-
The object of my Invention is to construct chimney, tops, so as to increase the
draft of the chimney or flue, prevent back draft or down smoke and ventilate the
room, which I accomplish by forming openings in the sides of the chimney top, near
to the bottom thereof. In connection with these openings are inclined flanges or
ribs projecting within the chimney top, whereby the flue is contracted at this
particular part, making the area thereof, less than the area of the outlet on the top.
The openings formed in the sides of the chimney top will induce and create a draft
therein, causing rapid circulation of air, whilst the contracted part caused by the
inclined flanges, materially assists in preventing down draft or smoke, and
ventilating the room.
Chimney tops so constructed may be made of earthenware,, metal or other
suitable material, and may be square or round in shape; slits being formed in the
inclined flanges to allow for chimney sweepers' brushes to pass more freely..
Dated thin and J....
1004
TASKER & CROSSLEY,
Market Place, Huddersfield,
Agents for the Applicant.

page_text: I, CHARLES HENRY RILEY of Huddersfield in the County of York Joiner and
Builder do hereby declare the nature of my. Invention for "IMPROVEMENTS IN
CHIMNEY-TOPS" 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 my Invention is to construct chimney-tops so as to increase the
draft of the chimney or flue, also to prevent back draft or down smoke and to
ventilate the room to which my chimney pot is applied, which I accomplish by
forming openings in the sides of the chimney top, near to the bottom thereof. In
connection with these openings are inclined flanges or ribs projecting within the
chimney top, whereby the flue is contracted at this particular part, making the area
thereof less than the area of the outlet on the top.
The openings formed in the sides of the chimney top will induce and create a
draft therein, causing rapid circulation of air, consequently ventilating the room,
whilst the contracted part caused by the inclined flanges materially assists in
preventing down draft or smoke.
In order that these improvements may be better understood, I herein give
reference to the accompanying Sheet of Drawings wherein Fig. 1 is elevation,
Fig. 2 vertical section and Fig. 3 sectional plan of a chimney top constructed
according to my Invention. A is the chimney top having horizontal openings
formed therein, which are provided with louvers or inclined flanges C projecting
within the chimney shaft and which are employed for the double purpose of
creating a draft and for reducing the area in the chimney pot near to the bottom
thereof.
It will be understood by those conversant with the working of chimney-pots,
that air will freely and continuously enter the openings B and that such air will
immediately commence to ascend therein, being guided in an upward direction by
the inclined flanges C, so that there will be a free and constant circulation of air,
which materially assists in ventilating the room which may be in connection with
the chimney pot.
In addition to the creation of an upward draft, the inclined flanges reduce the
area of the flue, making it of less area at that particular part, than the top or
outlet of the chimney pot, consequently there is less room and less liability for
back draft or down smoke than is the case where there is a straight opening or
thoroughfare.
In order however to still lessen the liability for back draft, I form the top of the
chimney pot as shewn at D in Fig. 1, but in some cases I dispense with such
device and employ a grate E as shewn in dotted line Fig. 2 and in plan view
Fig. 3, which grate I find materially assists in preventing any down draft, as by
its use the wind is distributed before it reaches the openings or flanges, whereby
it is impossible for a gust of wind to be driven down the chimney.
To facilitate and make the sweeping of such chimney pots more easy, slits a are
formed in each corner of the flanges C so as to allow of a chimney sweepers brush
to pass up and down freely.
Chimney pots constructed as herein described may be made of earthenware,
metal or other suitable material, and may be square, round or other suitable shape.
Having now particularly described and ascertained the nature of my said

page_text: Invention and in what manner the same is to be performed, I declare that what
I claim is:-
The employment of openings B in combination with flanges C which project
within the flue in manner and for purposes substantially as herein shewn and
described.
CHARLES HENRY RILEY.
Tasker & Crossley,
Market Place, Huddersfield,
Agents for the Applicant.