IMPROVEMENTS IN APPARATUS POR HEATING AIR, AND IN VALVES FOR ADMITTING HEATED AND COLD AIR, AND REGULATING THE SUPPLY THEREOF
Year: 1864

page_text: LETTERS PATENT to Thomas Waller, of Fish Street Hill, in the City of
:
London, Engineer, for the Invention of "IMPROVEMENTS IN APPARATUS POR
HEATING AIR, AND IN VALVES FOR ADMITTING HEATED AND COLD AIR, AND
REGULATING THE SUPPLY THEREOF."
Sealed the 23rd September 1864, and dated the 30th March 1864.
PROVISIONAL SPECIFICATION left by the said Thomas Waller at the
Office of the Commissioners of Patents, with his Petition, on the 30th
March 1864.
I, THOMAS WALLER, of Fish Street Hill, in the City of London, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS FOR HEATING AIR, AND IN VALVES FOR ADMITTING HEATED AND COLD
AIR, AND REGULATING THE SUPPLY THEREOF," to be as follows:-
The first part of my Invention consists in the employment of a metal box
or case at and connected to the back of stoves, with an inlet at the bottom or
sides, and with one, two, or more outlets from the top or upper part of the
I fix inclined metal plates inside the box, to afford additional heating
medium, and to cause the air to traverse an extended surface, and thereby
become heated before issuing from the outlets. I connect a pipe or pipes to
the outlets, and cause the mouth thereof to direct the heated air to any point
required.
The second part of my Invention consists in constructing ventilators to
admit and regulate the admission of heated air and cold air, or to shut off
either heated or cold air.

page_text: My ventilators consist of a cylinder held by and free to revolve in a casting
with parts cut away from such cylinder. I place this ventilator at the outlet
from a heated air duct, pipe, or flue, and from a cold air duct, pipe, or flue a
division separating the two ducts, or they may enter the ventilator from
different points. I connect an openwork plate and handle to the cylinders,
which is free to revolve, and by turning the handle the admission of heated or
cold air alone may be stopped or effected, or both heated and cold air may be
admitted at the same time. Instead of employing an openwork plate, I
sometimes use a solid porcelain or other plate, and admit the air passing
through the ventilator into the apartment to be ventilated round the edge and
back of the plate.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Waller in the Great Seal Patent Office on the
30th September 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
WALLER, of Fish Street Hill, in the City of London, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of March, in the year of our Lord One
thousand eight hundred and sixty-four, in the twenty-seventh year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Thomas Waller, Her special licence that I, the said Thomas Waller, my
executors, administrators, and assigns, or such others as I, the said Thomas
Waller, my 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 APPARATUS FOR
HEATING AIR, AND IN VALVES FOR ADMITTING HEATED AND COLD AIR, AND REGU-
LATING THE SUPPLY THEREOF," upon the condition (amongst others) that I, the
said Thomas Waller, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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.

page_text: NOW KNOW YE, that I, the said Thomas Waller, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed,
that is to say :-
The first part of my Invention consists in the employment of a metal box or
case at and connected to the back of stoves, with an inlet at the bottom or
sides, and with one, two, or more outlets from the top or upper part of the
case. I fix inclined metal plates inside the box, to afford additional heating
medium, and to cause the air to traverse an extended surface, and thereby
become heated before issuing from the outlets. I connect a pipe or pipes to
the outlets, and cause the mouth thereof to direct the heated air to any point
required.
Figure 1 of the accompanying Drawings is a sectional view of the box
or case.
a, a, a, a, a, are the inlets or apertures at the bottom; b, b, are outlets at
the top; c, c, c, c, are inclined metal plates, against which the cold air impinges,
is made to travel in contact with an extended heated surface, and thereby
becomes heated; pipes are connected to the outlets b, b, which serve to convey
the heated air to any point desired. The cold air may be admitted at the
side or sides of the box or case, or through either of the pipes b, b, the other
pipe not so used serving to conduct away the heated air.
The second part of my Invention consists in constructing ventilators to
admit and regulate the admission of heated air and cold air, or to shut off
either heated or cold air.
My ventilators consist of a cylinder held by and free to revolve in a casing,
with parts cut away from each cylinder. I place this ventilator at the outlet
from a heated air duct, pipe, or flue, and from a cold air duct, pipe, or flue, a
division separating the two ducts, or they may enter the ventilator from
different points. I connect an openwork plate and handle to the cylinders,
which is free to revolve, and by turning the handle the admission of heated or
cold air alone may be stopped or effected, or both heated and cold air may be
admitted at the same time. Instead of employing an openwork plate, I
sometimes use a solid porcelain or other plate, and admit the air passing
through the ventilator into the apartment to be ventilated round the edge and
back of the plate.
Figure 2 of the accompanying Drawings is a face view of a ventilator con-
structed according to this Invention; Figure 3, a section through the line
B, B, of Figure 2; Figure 4, a sectional view of the hot and cold air inlets;

page_text: Figure 5, a section through, the line C, C, of Figure 3; and Figure 6, a view
showing an arrangement of the apparatus whereby the hot or cold air is
admitted at the under part of the cylinder.
a is the casing of the apparatus; b, the cylinder, with parts cut away from
x to x, and from z to z; e, the heated air duct, pipe, or flue; d, the cold air
duct, pipe, or flue; f, the openwork plate, through which the heated, cold, or
mixed air passes; 9, the handle by which the cylinder is rotated, and the
heated or cold air, or both allowed to pass into the cylinder, or excluded
therefrom. In Figure 5 the ventilator is shewn set for the admission of
heated air only, but by moving the handle to the left to the extent of a quarter
of the circumference of the casing, that is from h to i, the cylinder will
receive and give passage to both hot and cold air; by moving the handle from
i to j, cold air only can pass into the cylinders and through the ventilator; and
by moving it again from j to k both hot and cold air will be excluded. Fig. 7
shows the ventilator arranged to allow of the air passing round the edge and
back of the plate.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim,-
Heating air by means of a metal box or case placed at the back of a stove,
such box having an inlet or inlets at the bottom or ends, and outlets at the
top, and being formed with inclined metal plates, substantially in manner and
for the purposes herein-before described and illustrated in the accompanying
Drawings.
Secondly, the construction of ventilators for the admission and regulation of
heated and cold air by placing a cylinder with parts cut away within a casing,
the admission or exclusion of the air being effected by the rotation of the
cylinder, substantially as described and illustrated in the Drawings.
In witness whereof, I, the said Thomas Waller, have hereunto set my
hand and seal, this Thirtieth day of September, One thousand eight
hundred and sixty-four.
THOS. WALLER. (L.S.)