Improvements in Chimneys and Chimney Tops.
Year: 1890

page_text: Date of Application, 5th June, 1890
Complete Specification Left, 3rd Mar., 1891-Accepted, 18th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Chimneys and Chimney Tops.
1, GEORGE CALVERT, 5, Abbey Terrace, Abbey Road, Grimsby, Slater
& Slate Merchant, do hereby declare the nature of this invention to be as
follows:-
It consists of the application of the principle of contracting or gathering in the
passage of the chimney or flue in the form of a bell or cone by means of inserting
in the flue in one or more places (in the chimney pot or other parts the "bell
tube A. A (see accompanying drawing) which may be made of clay, iron zinc or
any other suitable material.
"
New chimney pots can be made with the "bell tube" to form a part of it as
shown in Figs. 1 & 5, or existing pots can be fitted with the bell tube loosely
inserted at the bottom see Fig. 3. Round the sides of the chimney pot, near the
bottom of the bell tube a suitable number of holes X X are cut, to admit currents of
air, which will draw the smoke upwards, & also any down draught or moisture &c.
entering the chimney pot will be caught & diverted from its downward course by
the tube A & let out at the side holes X X.
The shape of the bell tube A. may be made either with straight or curved sides,
& the outside surface either smooth or fluted. The fluted grooves would tend to
direct the currents of air upwards. The hole in the top of the tube to be sufficiently
large to allow a sweep's brush to pass.
DESCRIPTION OF ACCOMPANYING DRAWING.
Figure 1. is a sectional elevation of a round chimney pot showing the "bell
tubeA. made in one piece with it X X are the inlet holes for the draught & also
to let out any down draught, moisture, soot &c. The surface of this tube A. is
shewn curved and smooth.
Figure 2. is a sectional plan of the above thro' holes X X.
Figure 3. shews an ordinary square chimney pot half in sectional elevation & half
outside elevation.
The bell tube A in this case is fitted in separate & fastened by cement or
mortar &c., round the base b. The tube A is here shown with straight sides
tapering from a square base to a round top & with fluted grooves which come
opposite the holes X X. cut in the sides of the chimney pot.
Figure 4. is a sectional plan of do.
Figure 5. is a sectional elevation of a round or square chimney pot containing
two sets of bell tubes A. & holes X. X.
Figure 6. is a sectional elevation of lower part of the flue shewing the "bell
tube" A. fixed over fire-place F on a slab of metal or other material.
Figure 7. is a plan of tube A. shewing the sides gathered from an oblong base to
a round top.
Dated this 31st day of May 1890.
בד מהד
CUTVRDT

page_text: Improvements in Chimneys and Chimney Tops.
I, GEORGE CALVERT, of 5, Abbey Terrace, Abbey Road, Grimsby, Slate
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 my invention is to prevent or destroy down draughts in chimneys
or flues, and thus avoid smoky chimneys.
And my invention consists in the application of the principle of contracting or
gathering in the passage of the chimney or flue in the form of a bell or cone, and
I prefer to carry such out by means of inserting in the flue in one or more places,
or in the chimney pot or other parts the bell tube or cone shaped down draught
destroyer as hereinafter shown and described.
DESCRIPTION OF DRAWINGS.
Fig. 1, is a sectional elevation of a round chimney pot in accordance with my
invention.
Fig. 2, is a sectional plan of Fig. 1, through the holes A. A.
Fig. 3, shows an ordinary square chinmey pot half in sectional elevation, and
half outside elevation.
Fig. 4, is a sectional plan of Fig. 3 through the holes A. A.
Fig. 5, is a sectional elevation of modification of a round or square chimney pot
as shown in Figs. 1 and 2.
Fig. 6, is a sectional elevation of lower part of flue showing my invention applied
thereto.
Fig. 7, is a plan of bell tube or cone shaped down draught destroyer as shown in
Fig. 6.
According to my said improvements the chimney top or pot B and the bell
tube or
cone shaped down draught destroyer C may be constructed together
when making the pot as shown in Fig. 1, where it will be seen that the bell
tube or cone C is made in one piece with the pot B, and provided with the
inlet holes A. A. for the draught, and also to let out any down draught, moisture,
soot or the like.
The surface is preferably curved and smooth. Or in the case of old pots
already fixed the bell tube or cone C is fitted in separate and fastened by
cement or mortar or the equivalent holding device round the base of the pot as
shewn in Fig. 3. The said bell tube or cone is here shewn with straight sides
tapering from a square base to a rounded top and with fluted grooves which
come opposite the holes A. A. provided in the chimney pot. Or the chimney
pot may be provided with two bell tubes or cones C. and corresponding holes A. A.
as shown in Fig. 5.
In some cases it may be necessary to adapt the bell tube or cone C as shown in
Fig. 6, wherein the said bell tube or cone C is shown fixed over the fire place on a
slab of metal or other material within the chimney or flue.
The said bell tube or cone may be made of zinc, clay, iron or any other suitable
material.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what -I
claim is :-
1. The construction of chimney pots having narrowing bell tubes or cones C
therein in combination with holes on inlets A A sob as shown and decoxibed

page_text: 2. The construction of chimney pots having narrowing bell tubes or cones C
therein for the purposes such as shown and described.
3. The application to chimney pots of narrowing bell tubes or cones C therein
with or without holes A. A. for the purposes such as shown and described, and with
reference to Figs. 3 and 4 of the drawings annexed.
4. Within flues or chimneys the employment of narrowing bell tubes or cones C
supported therein as and for the purposes such as shown and described.
Dated this 21st day of February 1891.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicant.