HEATING AND VENTILATING APARTMENTS," AND FOR REMEDYING SMOKY CHIMNIES BY A RADIANT VENTILATING GRATE
Year: 1852

page_text: LETTERS PATENT to John Anderson, of Rugby, in the County of
Warwick, Ironfounder, for the Invention of "HEATING AND
VENTILATING APARTMENTS," AND FOR REMEDYING SMOKY CHIMNIES BY A
RADIANT VENTILATING GRATE."
Sealed the 9th April 1853, and dated the 27th December 1852.
PROVISIONAL SPECIFICATION left by the said John Anderson
at the Office of the Commissioners of Patents, with his Petition,
on the 27th December 1852.
J, JOHN ANDERSON, of Rugby, in the County of Warwick, Iron-
founder, do hereby declare the nature of the said Invention for
"HEATING AND VENTILATING APARTMENTS, AND FOR REMEDYING SMOKY
CHIMNIES BY A RADIATING VENTILATING GRATE," to be as follows:-
The fire in a grate formed of irons bars in a series of concentric
curves, radiates upon a steel, iron, brass, or copper ash box, placed
over an air chamber under the grate. This chamber is supplied
with air by a tube communicating with the external air. As the
air in the apartment ascends the chimney, the external air enters
the chamber under the grate through the tube, and being heated
passes into chambers formed at the back of the fire. From the latter

page_text: chambers the air enters the apartinent through ventilators placed
in the cheeks or sides of the fire place, thus causing a constant.
supply of rarefied air in the apartment.
SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said John Anderson in the Great Seal
Patent Office on the 16th June 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JOHN ANDERSON of Rugby, in the County of Warwick, Ironfounder,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of December,
in the year of our Lord One thousand eight hundred and fifty-two,
in the sixteenth year of Her reign, did, for Herself, Her heirs
and successors, give and grant unto me, the said John Anderson,
Her special licence that I, the said John Anderson, my executors,
administrators, and assigns, or such others as I, the said John
Anderson, my executors, administrators, and assigns, should at any
tine 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 "HEATING AND VENTILATING APART-
MENTS, AND FOR REMEDYING SMOKY CHIMNIES BY A RADIANT VENTILATING
GRATE," upon the condition (amongst others) that I, the said John
Anderson, by an instrument in writing under my hand and seal,
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 wn that I the said John Anderson do hereby

page_text: declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to
the accompanying Drawings, and to the letters and figures marked
thereon (that is to say):
The fire in a grate formed of iron bars in a series of concentric
curves radiates upon a steel, iron, brass, or copper ash box placed
over an air chamber under the grate. This chamber is supplied
with air by a tube communicating with the external air. As the
air in the apartment ascends the chimney, the external air enters
the chamber under the grate through the tube, and being heated
passes into chambers formed at the back of the fire. From the
latter chambers the air enters the apartment through ventilators
placed in the cheeks or sides of the fire place, thus causing a
constant supply of rarified air in the apartment, and is constructed
in the following manner:- The foundation of the grate and the
back part of the hearth is to be made of bricks, with an air chamber
t, a, c, Plan 1, under the fire grate. A tube e, Plan 1, formed of
glazed stone ware pipes or other smooth material, to connect the
air chamber t, a, c, with the external air, by passing from the bottom
of the air chamber t, a, c, under the hearth H, Plan 2, in an hori-
zontal direction to the outside of the building, or fixed or built in
the wall parallel with the smoke fluc or chimney S. Section 7, 8, the
top end of the tube opening above the roof. The air chamber t, a, c,
to have an opening on each side d, d, Plan 1, Section 3, 4, commu-
nicating with two other air chambers o, o, o, o, Plan 1, on each side
or back of the fire. The chambers o, o, o, o, to have ventilators V,V,
Plan 2, placed in the sides or cheeks D, D, Plan 2, made to open
and shut to admit the external air entering at e, Plan 1, through the
air chambers t, a, c, o, o, o, o, Plan 1, into the apartment at V, V,
Plan 2. The air chamber t, a, c, to be covered with a metallic plate
let in so as to make the hearth under the ash box A, Plan 2, level.
Over the metallic plate and air chamber t, a, c, the grate formed of
a series of portable iron bars laid on two curved bearers in concen-
tric lines is to be fixed. The curved bearers are to be fixed in the

page_text: sides and back of the fire place.
The sides or cheeks B, B, Plan 2,
and back of the fire place F, Plan 2, from the hearth H, Plan 2, to
the head of the chimney piece E, to be made of fire brick.. The
sides or cheeks D, D, Plan 2, between B, B, and the chimney piece
C, C, from the ventilators V, V, to the hearth H, Plan 2, to be
polished metallic reflectors. The ash box A, Plan 2, to be made
either of steel, iron, brass, or copper. A polished metallic reflector
R, to be placed on the hearth H, Plan 2. The external air entering
the tube at e, will, whilst passing through the chamber t, a, c,
become heated by the vertical rays of the fire, which fall upon the
ash box A, over the metallic plate covering the air chamber t, a, c,
then passing through d, d, into the chambers 0, 0, 0, 0, will, whilst
passing through the latter chambers, become more heated by the
fire in the grate, and entering the apartment at V, V, will cause a
constant supply of pure rarified air in the apartment; and thus the
heat of the fire will be greatly increased, and equally diffused in the
apartment by radiation, reflection, and conduction. The vitiated
air will escape from the apartment by a ventilator G, Plan 2, placed
above the chimney piece near to the ceiling by a metal tube K,
Section 7, 8, fixed or built in the wall parallel with the smoke flue
or chimney S; and the smoke will ascend the smoke flue or chimney
S, by the external atmospheric pressure on the tube e, Plan 1, which
will cause an upward current in the smoke flue or chimney.
In witness whereof, I, the said John Anderson, have hereunto
set my hand and seal, this Thirteenth day of June, in the
year of our Lord One thousand eight hundred and fift
JOHN ANDERSON. (L.S.)
Witness,
JOHN S. SAVAGE.