IMPROVEMENTS IN STEAM BOILER AND OTHER FURNACES
Year: 1854

page_text: LETTERS PATENT to William Taylor, of, Howwood by Paisley, for the
Invention of "IMPROVEMENTS IN STEAM BOILER AND OTHER FURNACES:
Sealed the 11th May 1855, and, dated the 30th November. 1854
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PROVISIONAL SPECIFICATION left by the said William Taylor at
on-the
the Office of the Commissioners of Patents,,, with his Petition, on the
.. 30th November, 1854.
I; WILLIAM TAYLOR, of Howwood by Paisley, do hereby declare the.nature.
of the Invention for "IMPROVEMENTS IN STEAM BOILER AND OTHER FURNACES"
to be as follows:
'
This Invention has for its object an arrangement or combination of parts
of a steam boiler or other furnace suitable for burning the fuel from the upper
surfaces. The air supplied for combustion is not allowed to pass through
between 'bars, but only over the upper surfaces of the fuel, which is: laid on
close bottoms, under which the air passes to keep the: bottoms cool; and in
order that the air may become heated before it enters the furnace:For this
purpose, a small fire-place with fire bars is formed at the front end of the
furnace, which is called the igniting fire-place. Somewhat at a higher level,
and beyond the igniting fire-place, is the bottom of the furnace, which is close;
and, by preference, of cast iron, which inclines towards the back 'end of the
furnace. Under this bottom there is a space for the passage of air in a
direction from back to front, and at the fore end of the close bottom there is
a passage behind-the bridge of the igniting-fire-place, which inclines-back, so

page_text: that the heated air rising from below the close bottom of the furnace is caused
to sweep over the fuel laid thereon. Behind this first furnace one or more
similar close-bottom furnaces are constructed, according to the length and
extent desired, for a steam boiler or other furnace. In stoking this con-
struction of furnace, the fresh fuel is, by preference, placed on the fore part of
the bottom, and the more ignited fuel pushed back, till the unconsumable
matter comes to the back and falls below, or is removed from that end of
the furnace.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Taylor in the Great Seal Patent Office on the
30th May 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
TAYLOR, of Howwood by Paisley, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of November, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Taylor, Her special licence that I, the said Willian
Taylor, my executors, administrators, and assigns, or such others as I, the
said William Taylor, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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
STEAM BOILER AND OTHER FURNACES," upon the condition (amongst others) that
I, the said William Taylor, 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 Taylor, do hereby declare
the nature of the 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 (that is to say) :-
This Invention has for its object an arrangement or combination of parts
of a steam boiler or other furnace suitable for burning the fuel from the

page_text: upper surfaces:
The air supplied for combustion is not allowed to pass
through between bars, but only over, the upper surfaces of the fuel, which is
laid on close bottoms, under which the air passes to keep the bottoms cool,
and in order that the air may become heated before it enters the furnace.
For this purpose, a small fire-place with fire bars is formed at the front end
of the furnace, which is called the igniting fire-place. Somewhat at a
higher level, and beyond the igniting fire-place, is the bottom of the furnace,
which is close, and, by preference, of cast iron, which inclines towards the back
end of the furnace. Under this-bottom-there is a space for the passage of
air in a direction from back to front, and at the fore end of the close bottom
there is a passage behind the bridge of the igniting fire-place, which inclines
back, so that the heated air rising from below the close bottom of the furnace
is caused to sweep over the fuel laid thereon. Behind this first furnace one or
more similar close-bottom furnaces are constructed, according to the length
and extent desired, for a steam boiler or other furnace. In stoking this con-
struction of furnace, the fresh fuel is, by preference, placed on the fore part of
the bottom, and the more ignited fuel pushed back, till the unconsumable
matter comes to the back and falls below, or is removed from that end of the
furnace.
Having thus stated the nature. of my said Invention, I will proceed to
describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a side elevation of a steam boiler furnace arranged and
constructed according to my Invention; Figure 2 shows a longitudinal section
thereof. a, a, is what I call the igniting furnace, fitted with fire bars in the
ordinary manner; b, b, are fire doors to the fire-place or furnace a, a. In
the arrangement shown there are two other fire-places with closed bottoms,.but
only one or more than two may be used when the length of the boiler or furnace
require it. Each of these fire-places is formed with a close bottom, by pre-
ference of a plate of cast iron, with a space or chamber below for air, by
which arrangement the air becomes highly heated. c is the bridge which
divides the fire-place a from the first fire-place with a closed bottom. The
products of combustion from a pass over this bridge c, where they meet with
heated air at d, which rises up between the inclined plates d', d', and. such
products of combustion together with the heated air pass over the fuel on the
plate or closed bottom e of the next fire-place f. The products of combustion
from the fire at pass over the bridge g, where they meet with heated air
passing between the inclined plates h', and the products together with the

page_text: heated air pass over the fire on the' plate or closed bottom.i of the fire-place
In feeding the succeeding fires with closed bottoms, it is preferred to place the
fuel at the forward end, and gradually'move it back as it becomes more and
more ignited, placing fresh fuel on the more forward part of the closed
bottom when the fuel thereon has been pushed or moved back. Each of
these closed-bottom fires may be made with a space for the unconsumed dust
to be pushed off at the end, as is the case in respect to the fire-place j, or the
dust may be removed from time to time.
I would remark that I am aware that it is not new to cause the products
of combustion from one fire-place to pass over the fire on fire bars of another
fire-place; I do not, therefore, claim the use of a succession of fires in a furnace
where the succeeding furnaces are not closed at bottom and supplied with air,
as herein described.
Having thus described the nature of my said Invention; and the manner of
performing the same, I would have it understood that what I claim is, the
mode of constructing steam boiler and other long furnaces as herein described,
whereby the products of an ordinary fire-place made with fire bars meet with
air and pass together over ignited fuel on a close-bottomed fire-place, and so
on in succession, as herein explained.
In witness whereof, I, the said William Taylor, have hereunto set my
hand and seal, this Twenty-eighth day of May, in the year of our Lord
One thousand eight hundred and fifty-five.
Witness,
JNO. MCHALE,
of Midtownfield,...
Renfrewshire.
WILLIAM TAYLOR. (L.S.)