IMPROVEMENTS APPLICABLE TO THE BURN- ING OF ANTHRACITE OR STONE COAL AND OTHER FUEL, FOR THE PURPOSES OF OBTAINING HEAT
Year: 1843

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
KYMER, in the County of Carmarthen, South Wales, Coal Proprietor, and
THOMAS HODGSON LEIGHTON, of Llanelly, in the County of Carmarthen, afore-
said, Chemist, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under Great Seal of Great Britain, bearing date at West-
minster, the Twenty-first day of February, in the sixth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto us, the said John
Kymer and Thomas Hodgson Leighton, Her especial licence, full power, sole
privilege and authority, that we, the said John Kymer and Thomas Hodgson
Leighton, our exors, adiñiors, and assigns, or such others as we, the said
John Kymer and Thomas Hodgson Leighton, our exors, adiñors, 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 Ber-
wick upon Tweed, our Invention of "IMPROVEMENTS APPLICABLE TO THE BURN-
ING OF ANTHRACITE OR STONE COAL AND OTHER FUEL, FOR THE PURPOSES OF OBTAINING
HEAT;" in which said Letters Patent is contained a proviso that we, the said
John Kymer and Thomas Hodgson Leighton, or one of us, shall cause a par-
ticular description of the nature of our 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

page_text: the said in part recited Letters Patent, as in and by the same, reference being
thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
John Kymer and Thomas Hodgson Leighton, do hereby declare that the nature
of our 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 the Drawing hereunto annexed, and to the figures
and letters marked thereon (that is to say :-
Our Invention relates to a mode of constructing the grates and arranging
the fire bars of furnaces, and in such manner that the fire bars are in contact
with water, and cause steam to be evolved, which passes through or amongst
the anthracite or stone coal, or fuel placed thereon, thus obtaining a free and
useful combustion of the fuel for the purposes of heat. And in order that our
Invention may be most fully understood and readily carried into effect, we will
proceed to explain the Drawing hereunto annexed.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a front view of a steam boiler furnace. Figure 2 shows a
longitudinal section thereof. Figure 3 shows a transverse section of the fire
bars and water troughs in which the bars are placed; and Figure 4 shews a
plan of the water troughs separately. a is the furnace or fire-place; b the
ash pit, which is closed by a door c, in order to allow of air being blown into
the ash pit by means of a rotatory fan e, or other convenient means; or in
place of blowing air into the ash pit, the air may be withdrawn from the flue
or chimney of the furnace by a fan or other convenient apparatus, it being
desirable to obtain a large supply of air below the fire bars, particularly when
burning anthracite or stone coal; fis a trunk or pipe, by which air is con-
ducted from the fan at e, into the ash pit at 9; and there is a passage formed
in the brickwork from the ash pit, which opens out between the double door h,
by which the outer door is kept cool, and the air will pass over the fuel, as
indicated by the arrows; i, i, are the water troughs into which the under
surfaces of the fire bars enter, and thus come in contact with the water therein;
j,j, are the fire bars. By this arrangement the fire bars will be kept cool,
and at the same time the heat of the bars, given off to the water, will cause
steam to be evolved; and such steam, with the air from the ash pit, will rise
up through the fuel and aid the combustion thereof, particularly of anthracite
or stone coal; and it will be found, that notwithstanding the fuel is in a very
highly heated condition, the fire bars will not become highly heated. k is a tub
of water, and is a pipe, by which a constant supply of water is kept to the water

page_text: troughs; and in order to prevent the water running too freely, we apply a
cock on the pipe l, and we so regulate the flow of water, that the water will be.
kept up to the top of the water troughs. We would remark, that we have
preferred to shew in the Drawing a copy of a furnace actually at work; at the
same time it will be understood, that the arrangement of the parts and means
of supplying water to the water troughs may be variod, and will require to be
varied to suit different furnaces; but a workman acquainted with the construc-
tion of furnaces where fire bars are used, will readily make such variations as
the particular case may require. And we would have it understood, that what
we claim is the mode hercin described of constructing grates and arranging
fire bars of furnaces, whereby the fire bars are kept cool by water, and cause
steam to be evolved below the fuel.
In witness whereof, we, the said John Kymer and Thomas Hodgson
Leighton, have hercunto set our hands and seals, this Nineteenth day of
August, in the year of our Lord One thousand eight hundred and forty-
throa