IMPROVEMENTS IN FURNACES OR FIRE-PLACES
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
JUCKES, of Lewisham, in the County of Kent, Gentleman, send grecting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Ier
Letters Patent under the Great Seal of Great Britain, bearing dato at Westminster,
the Fourth day of September, in the fifth year of Her reign, did, for Herself,
Her heirs and successors, give and grant unto me, the said John Juckes, Her
especial licence, full power, solo privilege and authority, that I, the said John
Juckes, my exors, admors, and assigns, or such others as I, the said John
Juckes, my exors, adñors, or assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick upon Tweed, my Invention of
"IMPROVEMENTS IN FURNACES OR FIRE-PLACES;" in which said Letters Patent
is contained a proviso that I, the said John Juckes, shall cause a particular
description of the nature of my said Invention, and in what manner the
same is to be performed, to be inrolled in Her said Majesty's High Court
of Chancery within six calendar months next and immediately after the date
of the said in part recited Letters Patent, as in and by the same, referenco
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Juckes, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, reference being had to

page_text: the Drawing hereunto annexed, and to the figures and letters marked thereon
(that is to say):-
My Invention relates to a mode of arranging and combining the fire bars
of furnaces, and in such manner that by producing a chain of fire bars, and
by causing the parts successively to come into and go out of action, the fuel
will be carried into the furnace, and progressively be brought into a state of
combustion, the products evolved from the fresh fuel being ignited and burned
before they arrive at the bridge or entrance into the flue of the chimney, by
which means' the fuel employed will be most advantageously consumed; and
from the circumstance of the parts of the fire bars remaining only a short
time subject to a high temperature, they will not be liable to be quickly
destroyed. And in order that the Invention may be most fully understood,
and readily carried into effect, I will proceed to describe the Drawings here-
unto annexed, in the various Figures of which the same letters are used to
indicate similar parts. a, a, a, a, represents the interior of the furnace, the
upper and side parts of which will be constructed according to the purpose to
which the furnace is to be applied. 6 is the bridge and entrance of the fluc
into the chimney or shaft. The fire bars c, c', are made into an endless chain
by means of the axes d, d, which pass through the holes e of the bars c, and
through the holes e¹ of the outside bars c', and the ends of the axes d are
rivetted. The forms of the bars c, c¹, which I prefer to use, being shown
separately, as well as combined into a chain, the nature of their construction
will readily be traced in the Drawing, and it will be seen that the outer
bars c¹ are supported in their movement by rollers f, f, so that the portion of
the chain of bars within the furnace will be supported by such rollers f
which turn on suitable axes at each side of the furnace, as is shown. And it
will be seen that the various bars c, c¹, are so placed on their axes that the
bars are what is called break-joint, by which means, as they go out of action
by passing out of the furnace in passing over the back chain wheel, the parts
so separate that in the event of any clinker or hard cinder having formed on
or between the bars, the same will be broken off, and thus will the bars at all
times be kept free, and allow of a free passage of air between them when
within the furnace. g,g, are two chain wheels, moving on axes at either end
of the furnace, the carriages or gudgeons of the front chain wheel being
moveable in the framing, and adjustable by the screws and nuts h, h. The
chain of fire bars is carried by a frame i, i, which is capable of being moved
into and out of the ash pit by means of wheels j,j, which run on rails k, k.
By this arrangement the fire.bars can be quickly removed at any moment in
the event of requiring any repair, or for any other purpose. On the axis of

page_text: the front chain wheel g is affixed the cog wheel 1, which takes into and is
worked by the pinion m, which is affixed on an axis n, which has a square
end to receive the lever o, which has a ratchet wheel p, with a hollow, axis
moving through openings of the two side plates p', of which that end of the
lever o is composed, and q is a spring click; hence, when the lever o is applied
to the square end of the axis n, the lever o may be moved one direction
without operating to turn the axis, but in moving in the opposite direction
the axis will be turned. is a hopper into which the fuel is fod, and a
constant supply is kept therein. s is a sliding door, suspended by chains t,
and counterbalanced by the weight v. By this arrangement the quantity of
fuel carried into the furnace can be regulated with great nicety, for, according
as the door is raised more or less above the fire bars c, there will be more or
less fuel carried in by the moving bars. And it may be remarked that I use
small coal; indeed, such is the peculiar effect produced by this mode of feeding
a furnace with fuel, and of burning fuel, that the "slack" or small of coal
may be consumed with great advantage. When the furnace is in use I causo
the bars to be moved about a foot every twenty minutes, by which it will be
found that a very excellent fire will be maintained, and no smoke will be
evolved from the chimney. I would remark that although I have shown the
exact particulars of construction of every part, I do not confine myself thereto,
so long as the peculiar character of the combination of a series of fire bars
into a chain be retained, whereby in using the same the various parts pro-
gressively pass into and out of action, as has been explained. u is an inclined
plate of iron at the front part of the furnace, placed under the chain of bars,
and any small coal which falls between the bars before they become caked
and ignited will slide down such inclined plate, and may be removed from
time to time and supplied again into the hopper. The nature of the various
Figures of the Drawing being written thereon will not require to be repeated
here, and I wish it to be understood, that what I claim is the mode of con-
structing furnaces or fire-places by combining fire bars into a chain, by which
the parts may be changed in their position from time to time, and progressively
go into and out of action, as above explained.
In witness whereof, I, the said John Juckes, have hereunto set my
hand and seal, this Fourth day of March, in the year of our Lord
One thousand eight hundred and forty-two.
JN (L.s.) JUCKES.

page_text: AND BE IT REMEMBERED, that on the Third day of March, in
the year of our Lord 1842, the aforesaid John Juckes came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Inrolled the Fourth day of March, in the year of our Lord One thousand
eight hundred and forty-two.