IMPROVEMENTS IN STOVES OR FURNACES FOR HEATING AIR
Year: 1868

page_text: LETTERS PATENT to William Robert Lake, of the "Internationa
Patent Office," No. 8, Southampton Buildings, Chancery Lane,
in the County of Middlesex, Consulting Engineer, for the Inven-
tion of "IMPROVEMENTS IN STOVES OR FURNACES FOR HEATING AIR."-
A communication from abroad by Andrew Thunder, of Sandhurst,
in the Colony of Victoria, Australia, Brewer.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition, on
the 20th February 1868.
I, WILLIAM ROBERT LAKE, of the "International Patent Office,"
No. 8, Southampton Buildings, Chancery Lane, in the County of
Middlesex, Consulting Engineer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN STOVES OR FURNACES FOR HEATING
AIB," a communication, to be as follows:-
My Invention relates to the construction of a cheap, safe, and.

page_text: grain.
The nature of the said Invention consists chiefly in so constructing
the apparatus that a current of cold atmospheric air may be conducted
into flues passing around all the available surface of the stove or furnace
and then into a flue surrounding a cast-iron heating pipe so that such
air absorbs as much caloric as possible in its passage to the chamber
where it is required.
The said Invention also consists partly in the arrangement of pipes
whereby the heated air and products of combustion are utilized in the
most advantageous manner. The stove and pipes may be made of
cast iron. The cold air supply passage. and flues for heating the air
are made of suitable size and conducting flues for the air are provided
where required. Sheet-iron pipes are provided for conducting away the
smoke to extract its caloric and discharge it into the chimney. The
cold air pipe is connected with the flues surrounding the stove and the-
cast-iron heating pipe. The said heating pipe is arranged to allow the
smoke and other products of combustion to pass from the stove through
the said pipe into the chimney, while the greater portion of the heat is
conducted through the sides of the flues and absorbed by the air passing
through the same; a fire is kindled in the stove and the cold air is
then permitted to descend the cold air passage; the air then travels
through the heating flues on each side and at the back; and, lastly, along
the top of the stove, whence it passes into the flue surrounding the
cast-iron pipe, which conducts it to about the centre of the lower part
of the hot-air chamber. From this point it is allowed to pass to the
place to be heated. There is however some degree of caloric contained
in the smoke and gases after leaving the cast-iron pipe. I extract and
utilize the greater part of this caloric by conducting it from the said
cast-iron pipe and discharging it into two series of sheet-iron pipes
arranged to equalise the heat in the various portions of the hot-air
chamber before it is finally discharged into the chimney. These pipes
may be extended horizontally or vertically across the said chamber, and
at one end are connected with the chimney.
My Invention is well adapted for the purpose of drying wool, as a
ho neduood

page_text: at a small cost and without the danger arising from sparks and smoke
as in the ordinary processes.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Scal Patent
Office on the 15th August 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," No. 8, Southampton
Buildings, Chancery Lane, in the County of Middlesex, Consulting
Engineer, send greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of February, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators,
and assigns, or such others as I, the said William Robert Lake, 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 STOVES OR FURNACES FOR HEATING AIR," upon the
condition (amongst others) that I, the said William Robert Lake, my
executors or administrators, by an instrument in writing under my,
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 thic
Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the 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 had to the accom-
panying Sheet of Drawings forming a part of this Specification:-

page_text: chamber before it is finally discharged into the chimney H. The course
of the smoke through these different series of pipes is indicated by the
black and red arrows 1 and 2, in Figure 1.
It may be as well to state that this Invention is particularly adapted
for the purpose of drying wool, as a very large volume of air heated
to a high temperature can be produced at a small cost and without
the danger which the sparks and smoke entail in the ordinary process.
It is evident that many of the details of this Invention might be
altered or varied without departing from its nature, and therefore I
do not confine myself precisely to those shewn and described, but I
claim,―
First. The construction of stoves or furnaces in such a manner that
the whole available surface thereof is occupied by flues (marked D in
the Drawings) for the purpose of heating atmospheric air, in the manner
substantially as hercin described.
Second. The construction of such stoves or furnaces with the cast-
iron heating or smoke pipe B attached thereto and surrounded by the
flue E, in the manner and for the purpose substantially as herein
described.
Third. The particular method of applying my Invention to kilns
for drying grain either malted or raw, substantially as herein described.
In witness whereof I, the said William Robert Lake, have here-
unto set my hand and seal, this Fifteenth day of August, in
the year of our Lord One thousand eight hundred and sixty-
eight.
WILLIAM ROBERT LAKE. (L.s.)
Witness,
FRANK WALLIS.