AN IMPROVED APPARATUS FOR THE PURPOSES OF HEATING AND DRYING
Year: 1857

page_text: LETTERS PATENT to William Walker; of Leeds, in the County of York:
Maltster, for the Invention of "AN IMPROVED APPARATUS FOR THE PURPOSES
OF HEATING AND DRYING."
Sealed the 18th June 1858, and dated the 19th December 1857.
PROVISIONAL SPECIFICATION left by the said William Walker at the
Office of the Commissioners of Patents, with his Petition, on the 19th
December 1857.
I, WILLIAM WALKER, of Leeds. in the County of York, Maltster. do hereby
declare the nature of the said Invention for "AN IMPROVED APPARATUS FOR
THE PURPOSES OF HEATING AND DRYING," to be as follows:-
My Invention is applicable to the heating of buildings. drying grain, cotton.
fibres, dye roots. woods, drugs. or garancine, or in any other situations, or to
any other purposes wherein the processes of heating or drying may be required.
The improvement consists in constructing an oven under the kiln. within
which is a fire-place suitable to burn coal or other fuel to heat the oven.
Between the fire and the roof of the oven metal or other flues or tubes are
placed to be heated. and through these air is passed from the atmosphere to
the drying kiln. When wanted to dry with as little fire as possible. and pure
air is not required. the fire doors are left open, and the dampers closed, which
allows the air to pass from the oven to the drying kiln. Air is also passed
over the oven to the kiln. Cold air passages are also employed for reducing
and regulating the temperature.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Walker in the Great Seal Patent Office on the
10th June 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WALKER, of Leeds, in the County of York, Maltster; send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent. bearing date the Nineteenth day of December, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twenty-first year of
Iler reign. did, for Herself, Her heirs and successors. give and grant unto me.
the said William Walker. Her especial license that I. the said William Walker.
my executors, administrators. and assigns, or such others as 1. the said
William Walker, 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 "AN IMPROVED APPARATUS
FOR THE PURPOSES OF HEATING AND DRYING." upon the condition. amongst
others. that I, the said William Walker, 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 YE, that I. the said William Walker, 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 and accompanying Drawings (that is to say): ·
My Invention is applicable to the heating of buildings, drying grain, cotton,
fibres, dye roots, and woods, drugs, or garancine, or in any other situations, or
to any other purposes wherein the process of heating or drying may be
required. The improvement consists in constructing an oven under the kiln.
within which is a fire-place suitable to burn coal or other fuel to heat the
oven. Between the fire and the roof of the oven, metal or other flues or tubes
are placed to be heated, and through these air is passed from the atmosphere
to the drying kiln. When wanted to dry with as little fire as possible, and
pure is not required. the fire doors are left open. and the dampers closed.
which will allow the air to pass from the oven to the drying kiln. Cold air
passages are also employed for reducing and regulating the temperature,

page_text: In order that the Invention may be better understood and more fully
explained in detail. I have hereunto annexed a Sheet of Drawings made upon
a scale of about three-quarters of an inch to a foot, and having similar letters
of reference marked upon corresponding parts of the apparatus.
Fig. is a longitudinal section of the hot-air furnace, and Fig. 2 is a front
view of the same as employed for various purposes, such as drying after
printing cotton, wool, silk, or other fabric or substance: also for drying Turkey
red garancine. and other dye roots. woods. fibres. or drugs. or for malt. hops.
and grain of every description, and for any other purpose in which the process
of drying is required; and it is also applicable to the heating of buildings.
In Figs. 1 and 2 a. a. is the furnace, by which the air passing through the
air tubes or flues b. b. b. is heated: thus imparts heat to the drying floor c. c.
upon which the materials to be dryed are placed and d. d. are dampers, by
means of which the current of hot air may be directed through other flues: or
the heating power of the furnace may be increased or diminished, or regulated
as required. By this arrangement of heating and drying apparatus, it will
be evident that the goods or materials to be dried are not injured or
impregnated with smoke, &c.. by being submitted to the action of the heated
pure atmospheric air; but when the purity of the air is not required the
dampers may be so arranged as to admit the hot air from the furnace to the
flues and drying floor.
Having now described the nature of my said Invention, together with the
method of performing the same, I would remark, in conclusion that I claim
the novel and improved arrangements and construction of apparatus as
employed for the purposes of heating and drying, as herein-before described,
set forth, and fully exhibited in the Drawings attached, or any slight
variation or modification of the same, which shall be substantially the same in
effect.
In witness whereof. I, the said William Walker. have hereunto set my
hand and seal, this Eighteenth day of June, in the year of our Lord
One thousand eight hundred and fifty-eight.
WILLIAM
WALKER. (L.S.)
Signed, sealed, and delivered, by the said
William Walker, in the presence of
JOSEPH CALVERLEY. Manf Chemist, Accrington.
WM HARD WALKER Maltster. Leeds.