IMPROVEMENTS IN STOVES AND FIRE-PLACES
Year: 1869

page_text: LETTERS PATENT to George Swansborough Whitechurch and Henry
Whitechurch, both of Serle Street, Lincoln's Inn Fields, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN
STOVES AND FIRE-PLACES."!"
PROVISIONAL SPECIFICATION left by the said George Swansborough
Whitechurch and Henry Whitechurch at the Office of the Commis-
sioners of Patents, with their Petition, on the 2nd October 1869.
We, GEORGE SWANSBOROUGH WHITЕCHURCH and HENRY WHITE-
CHURCH, both of Serle Street, Lincoln's Inn Fields, in the County of
Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN STOVES AND FIRE-PLACES," to be as follows:-
This Invention consists in the application of certain arrangements to
stove grates and fire-places whereby the draught of air up the chimney
is increased and the evils consequent upon the descent of smoke aro
obviated. These advantages are obtained by the use of what may
be termed a "supplementary" flue, which is arranged and employed
as follows:-In the case of ordinary register stoves the register flap is

page_text: retained, but at the back of the stove is placed a supplementary flue
constructed of iron and either of a rectangular form or of any suitable
section, the lower end thereof descending to within a short distance of
the fire, and the upper portion thereof being carried upwards as far as
may be desired according to the nature and exigencies of the stove or
chimney to which it is applied. In the interior of the flue is placed a
hinged trap, which is actuated from the front by a toothed quadrant
connected to jointed levers, or by any other suitable and analogous
mechanism, and by means of which it may be entirely or partially
opened or closed as may be necessary. The flue should be opened
previously to the fire being kindled, whereupon the heated air rises
through the flue into the chimney and thereby rarifies the air contained
therein and occasions an upward current. In order to facilitate this
result a lighted piece of paper or other substance may be advantageously
held, upon kindling the fire, to the lower part of the open flue for the
purpose of rarefying the air therein. When no fire is required the flue
trap should be entirely closed, so as, in the case of register stoves, to
prevent any downward current of air.
The before-described supplementary flue is capable of being adapted
and applied to any ordinary fire-places other than those provided with
register stoves and with similarly beneficial resultą.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Swansborough Whitechurch and Henry
Whitechurch in the Great Seal Patent Office on the 2nd April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE 2
SWANSBOROUGH WHITECHURCH and HENRY WHITECHURCH, both of
Serle Street, Lincoln's Inn Fields, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of October, in the year 3
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said George Swansborough Whitechurch
and Henry Whitechurch, Her special licence, that we, the said George

page_text: Swansborough Whitechurch and Henry Whitechurch, our executors,
administrators, and assigns, or such others as we, the said George
Swansborough Whitechurch and Henry Whitechurch, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
STOVES AND FIRE-PLACES," upon the condition (amongst others) that we,
the said George Swansborough Whitechurch and Henry Whitechurch,
our executors or administrators, by an instrument in writing under our,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said George Swansborough Whitechurch
and Henry Whitechurch, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement,
reference being made to the Drawings hereunto annexed, and to the
figures and letters marked thereon, that is to say:-
Our said Invention consists in the application of certain arrangements
to stove grates and fire-places whereby the draught of air up the
chimney is facilitated and increased and the evils consequent upon the
descent of smoke are obviated. These advantages are obtained by
the use of what may be termed a supplementary flue, which is arranged
and employed as follows:-In the case of ordinary register stoves the
register flap is retained, but at the back of the stove is placed a
supplementary flue constructed of iron and either of a rectangular form
or of any suitable section, the lower end of which descends to within
a short distance of the fire, and the upper portion being carried upwards
as far as may be desired, according to the nature and exigencies of the
stove or chimney to which it is applied. In the interior of the flue is
placed a hinged trap or flap, which is actuated from the front by a
toothed quadrant connected to jointed levers, or by any other suitable
and analogous mechanism, as will be well understood, and by means of
which it may be raised or lowered, and thereby the supplementary flue

page_text: The
entirely or partially opened or closed, as may be necessary.
supplementary flue should be opened previously to the fire being
kindled. Upon the fire being kindled the heated air rises through the
supplementary fluo into the chimney and thereby rarefies the air
contained therein and occasions an upward current. In order to b
facilitate this result a lighted piece of paper or other substance may be
advantageously held, upon kindling the fire, to the lower part of the
open flue for the purpose of rarefying the air therein. When no fire is
required the flue trap should be entirely closed, so as, in the case of
register stoves, to prevent any downward current of air.
The before-described supplementary flue is capable of being adapted
and applied to any ordinary fire-places other than those provided with
register stoves, and with similarly beneficial results.
1
Our said Invention will be more clearly understood by reference
to the annexed Drawings, in which Figure 1 is an elevation of a stove 1
arranged as herein-before described, and Figure 2 is a section thereof.
A is the grate in which the fire is placed; B is the supplementary
flue; C is the moveable trap or flap by which the latter is opened or
closed; D is the arrangement for raising and lowering the trap or flap.
The arrows shew the direction of the current of heated air.
Having thus described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we would
observe in conclusion that what we consider novel and original, and
therefore claim as constituting the Invention secured to us by the said
herein-before in part recited Letters Patent is, the combination and
arrangement of parts and mechanism substantially as and for the pur-
poses herein-before described and set forth.
In witness whereof, we, the said George Swansborough Whitechurch
and Henry Whitechurch have hereunto set our hands and seals,
this Second day of April, in the year of our Lord One thousand
eight hundred and seventy.