IMPROVEMENTS IN FUR- NACES AND STEAM BOILERS
Year: 1858

page_text: LETTERS PATENT to Edward Clark Grimshaw, of Denton, in the County
of Lancaster, Block Turner, for the Invention of "IMPROVEMENTS IN FUR-
NACES AND STEAM BOILERS."
Sealed the 7th December 1858, and dated the 9th June 1858.
PROVISIONAL SPECIFICATION left by the said Edward Clark Grimshaw
at the Office of the Commissioners of Patents, with his Petition, on the
9th June 1858.
I, EDWARD CLARK GRIMSHAW, of Denton, in the County of Lancaster, Block
Turner, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN FURNACES AND STEAM BOILERS," to be as follows:-
I combine a stove for heating irons for bat finishing with a steam boiler,
the steam from which I use for the process of felting or making hat bodies.
I make the said heating apparatus of any convenient size or shape, and place
the fire or heating medium under it, which stove or furnace heats the iron
used for finishing hats.
Over the said heating apparatus I fix a steam boiler, in which steam is
generated by the heat arising from the heating apparatus, which steam I
convey by a pipe to any convenient place for steaming or felting the hat
bodies. I thus economize fuel to a very great extent.
It is evident that I can apply the said apparatus usefully and economically
for laundry and other similar purposes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Clark Grimshaw in the Great Seal Patent Office
on the 9th December 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
CLARK GRIMSHAW, of Denton, in the County of Lancaster, Block Turner, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of June, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Edward Clark Grimshaw, Her special licence that I, the said Edward
Clark Grimshaw, my executors, administrators, and assigns, or such others
as I, the said Edward Clark Grimshaw, 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 FURNACES AND STEAM BOILERS," upon the condition (amongst
others) that I, the said Edward Clark Grimshaw, 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 Edward Clark Grimshaw, do hereby
declare the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement (that is to say):
My improvements consist in combining stoves employed in hat finishing or
similar purposes with boilers, so as to make the furnace capable of heating
irons, and also converting water into steam, which arrangements are applicable
to a great variety of purposes with much economy of fuel.
The manner in which my said Invention is to be performed will be clearly
understood by reference to the accompanying Sheet of Drawings with the
figures and letters thereon.
Fig. 1 is a longitudinal section of my combined stove and boiler; Fig. 2 a
transverse elevation of the same; Fig. 3 a section of the plates of the outer
casing drawn full size; and Figs. 4 and 5 are views of a stove and flues
shewing the position of the damper.

page_text: In Figs. 1 and 2, a represents the interior of the stove or furnace; b, the
fire bars; c, the feeder or receptacle for fuel; d, the flat surfaces on the out-
side of the stove for heating irons or other articles, placed as required upon
the brackets e, which may be covered with plates so as to form one or more
hollow chambers or ovens for the purpose of heating pressing irons for woollen
or other manufactures. The stove a is connected to a flue f in the interior of
an outer boiler g, in which flue I place an inner boiler h. having an internal
flue i. The smoke and heated gases pass from the stove or furnace along the
flue f, and turn at the back into the flue i, through which they pass to the
combustion chamber k, made of fire bricks or other materials; the inner
flue being connected by the opening with the chimney. The outer and
inner boilers are connected to each other by the pipes m, so as to maintain
through both boilers a constant circulation of the water. The aforesaid
arrangement of flues and boilers procures a vast amount of efficient heating
surface, and may be employed for all kinds of boilers, either with ordinary
furnaces or in connection with stoves or furnaces employed for heating irons
or other purposes.
The outside casing of the outer boiler may be made of single plates, or of
double or two-fold plates as shewn at n, Fig. 1, and also enlarged at Fig. 3,
the grain of the plates being placed transversely with each other, thereby
obtaining much more strength and power to resist a greater pressure than can
be obtained by using single plates.
When a stove and boiler are employed together, I use one or more dampers,
so that the stove may be used separate from the boiler, or conjoined with it
as may be required. In Figs. 4 and 5, I shew the employment of one
damper o, which, if open, allows the smoke and gases to pass through the
inner flue and passage to the chimney, but if closed, the smoke and gases
circulate through the flues s and t, before they arrive at the chimney, thus
regulating their course by the employment of a damper, and obtaining the
heat where it is required.
P
Instead of the combustion chamber shewn in Fig. 1, I vary the arrange-
ment when desired by placing an iron plate at or between the top or bottom
in the centre of the flues just behind the furnace, so that the plate becomes
sufficiently heated to ignite the gases, and consume the smoke. I do not
confine myself to the method of feeding by the hopper, as the same may be
done by the furnace door in the usual way.
Having thus fully described the nature of my said Invention, and the
manner in which the same is to be performed, I desire it to be distinctly
understood that 1 do not confine myself to the precise details herein set forth,

page_text: as such may be varied or modified without departing from the principles
thereof; but I claim as my Invention, and which to the best of my knowledge
and belief has not been hitherto used within the realm.
Firstly, a combination of stoves with steam boilers.
Secondly, the employment of two-fold plates with the grain of each placed
transversely to each other for forming the outer casing of boilers, and placing
within one internal flue another boiler having another internal flue in con-
nection with a combustion chamber of fire bricks, iron, or other suitable
material, and also the employment of an iron plate at or between the top and
bottom, or centre of the flues for consuming the smoke.
In witness whereof, I, the said Edward Clark Grimshaw, have hereunto
set my hand and seal, this Seventh day of December, in the year of
our Lord One thousand eight hundred and fifty-eight.
EDWARD CLARK GRIMSIIAW. (L.S.)
Signed, sealed, and delivered by the within-
named Edward Clark Grimshaw, in the
presence of
E. J. HUGHES, Patent Agent,
Manchester.