IMPROVEMENTS IN FLUE MOUTHS--FOR THE FLUES OF DWELLING HOUSES AND OTHER SIMILAR BUILDINGS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, THOMAS FROST MAY, at the Office for Patents, 6 Lord Street, Liverpool, in
the County of Lancaster, Clerk of Works, do hereby declare the nature of my
said Invention for "IMPROVEMENTS IN FLUE MOUTHS"--FOR THE FLUES OF
DWELLING HOUSES AND OTHER SIMILAR BUILDINGS to be as follows:-
The object of this Invention is to increase the officiency and improve the draught
of the Blues or chimneys constructed in dwelling houses and other similar places for
domestic uso.
I construct the flues with a perfect and gradual contraction at the bottom or
mouth, forming as nearly as possible a smooth surface, and leaving no angular
obstructions to obstruct the draught or collect soot. The contracted mouth
tending to increase the draught by the vacuum or exhaust formed by it giving an
impetus to the current.
In carrying out the Invention, I prefer to make the flue mouth contractor in
earthenware of a sizo to suit the requirements of the grate over which it is placed,
and set it in its place and build it into the masonry.
If however it were desirod,
cast iron might be used, or the flue mouth be made in a number of sections and
jointed together with square, flanged, joggled, or other joints most suited to the
requirements of the situation.
My flue mouth contractor may be made of shape to suit tho direction of the flues
which are made straight, or turning to the right or left, or in other direction, tho
inclination of gathering wings, also different sizes and shapes such as square,
rectangular, round, oval, etcetera.
By the use of my Invention I consider that a better draught is maintained, a
down draught, and return of smoke is less liable to occur, a smooth surface is
presented to the smoke rising from the fire which consequently will collect but
little soot, and also, being easily cleaned, reduces the accumulation of soot to a
minimum, thereby obviating the danger from ignition.

page_text: COME LEIE
DIEVLFICATION
I THOMAS FROST MAY, at the Office for Patents, 6, Lord, Street, Liverpool, in
the County of Lancaster, Clerk of Works do hereby declare the nature of my
said Invention for "IMPROVEMENTS IN FLUE MOUTHS" FOR THE FLUES OF
DWELLING HOUSES AND OTHER SIMILAR BUILDINGS 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 this Invention is to increase the efficiency and improve the draught
of the flues or chimneys constructed in dwelling houses, and other similar buildings.
I construct the mouth of the flue with a perfect and gradual contraction at the
bottom as it rises from the fire grate opening, forming as nearly as possible a
smooth surface, and leaving no angular obstructions to obstruct the draught or
collect soot. The mouth of the flue gradually contracting as it rises tends to
increase the draught by the vacuum or exhaust formed by it giving an impetus to
the current.
I prefer to insert a flue mouth, contractor made of stoneware or earthenware of a
size to suit the requirements of the grate over which it is placed, and set it in its
place and build it into the masonry or brickwork. If howover it were desired, cast
iron or other metal might be used, or the fluo mouth be made in a number of
sections, and jointed together with square flanged, joggled or other joints most
Buited to the requirements of the situation.
Referring to the annoxed Drawings-
Fig. 1 is an elevation and Fig. 2 a section of a flue mouth made in accordance
with
my Invention.
i
Fig. 3 sectional elevation, and Fig. 4 sectional plan of flue mouth contractor
made in stoneware and to suit a circular flue rising perpendicularly.
Fig. 5 sectional olevation of stoneware flue contractor applied to rectangular flue
rising to the left as shown in Fig. i,'
Fig. 6 section on line x x Fig. 5.
Fig. 7 section on lino y y Fig. 5.
·".
While the flue mouth may be built of brick or made of a number of sections
joined together as above described, and so gradually contracted, I prefer. to insert
stoneware or cast, metal contractors such as are shewn in the Drawings, and made of
shape to suit the direction of the flues, either straight, or turning to the right or
left or in other direction, the inclination of gathering wings, and also flues of
different sizes and shapes such as square, rectangular, round oval, etcetera.
By the use of my Invention I consider, that a better draught is maintained, a
down draught, and return of smoke is less liable to occur, a smooth 'surface is
presented to the smoko rising from the fire which consequently will collect but
little soot, and also, boing, casily cleaned, reduces the accumulation of soot to a
minimum, thereby obviating the danger from ignition.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1st. The construction of the mouths of flues for dwelling houses and other
similar buildings, gradually contracting as they rise from the fire place opening,
either formed of a number of sectional pieces or bricks built together, or of a single
piece moulded or cast of suitable material and set in, substantially as described and
shawn.

page_text: 2nd. A flue mouth for insertion into the flues of dwelling houses and other.
similar buildings, made in stoneware or earthenware or cast metal or other
material, gradually contracting as it rises from the top of the fire place opening,
with smooth surface and without angular obstruction for the smoke, substantially
as described and shewn.