IMPROVEMENTS IN MEANS FOR CONSUMING OR PREventing SmoKE
Year: 1874

page_text: LETTERS PATENT to David Jones, of Millburn, Inverness, in the
County of Inverness, Mechanical Engineer, for the Invention of
#IMPROVEMENTS IN MEANS FOR CONSUMING OR PREventing SmoKE.”
"IMPROVEMENTS IN MEANS POR CONSUMING OR PREVENTING SMOKE.”
PROVISIONAL SPECIFICATION left by the said David Jones at the
Office of the Commissioners of Patents, with his Petition, on the
31st March 1874.
I, DAVID JONES, of Millburn, Inverness, in the County of Inverness,
Mechanical Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MEANS FOR CONSUMING OR PREVENTING SMOKE," to be
as follows:-
1
The said Invention embraces a mode or modes of constructing a com-
bustion chamber with partitions or bridges in flue or flues or passage or
passages of furnaces in steam boilers or otherwise, and admitting air
therein so as to cause the smoke or unconsumed gases arising from the
fuel to be thoroughly mixed with air in the said chamber, thereby pre-
venting smoke, and the said mode or modes consisting in erecting,

page_text: disposing, or making in the flue or passage partitions or bridges across
the same.
The means whereby I intend to carry the said Invention into effect,
consist in the use of partitions or bridges which may, if for steam
boilers, be constructed as a water space, or may be of fire-brick or any
other suitable substance or material; and air may be admitted in the
combustion chamber in different ways.
One way of admitting air to the combustion chamber is through the
ash-pit and regulating damper, entering the combustion chamber at an
orifice which extends across the flue or passage, allowing the air to
become mixed with the unconsumed gases in the combustion chamber,
thus preventing the emission of smoke.
The size of the combustion chamber should be proportioned to that of
the furnace, and the use of a regulating damper may be dispensed with
in some cases.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said David Jones in the Great Seal Patent Office on
the 30th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
JONES, of Millburn, Inverness, in the County of Inverness, Mechanical
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto the said David Jones, Her special licence that
I, thic said David Jones, my executors, administrators, and assigns,
or such others as I, the said David Jones, my executors, administrators,
or assigns, should at any time agree with, and no others, from time to
time and at all times thercafter 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 MEANS FOR CON-
SUMING OR PREVENTING SMOKE," upon the condition (amongst others) that

page_text: I, the said David Jones, my executors or administrators, by an instru-
ment in writing, under my, or their, or one of their hands and seals,
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, tho said David Jones, 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 tho
following statement :-
:
The object and intention of my said Invention relate to a mode or
modes of constructing a combustion chamber with partitions or bridges
in flue or flues or passage or 'passages of furnaces in steam boilers, or
otherwise, and admitting air therein so as to cause the smoke or uncon-
sumed gases arising from the fuel to be thoroughly mixed with air in the
said chamber, thereby preventing smoke; such mode or modes of
erecting, disposing, or making in the fluc or passage, partitions or
bridges across the same, being exemplified by the descriptive statements
herein-after contained and the Drawing accompanying these Presents.
The nature of my said Invention and the means whereby I intend to
carry out the said object and intention consist in the use of partitions or
bridges which may if for steam boilers be constructed as a water space,
or may be of fire-brick or any other suitable substance or material, and
air
be admitted in the combustion chamber in different ways.
may
For example, one way of admitting air to the combustion chamber is
through the ash-pit and regulating damper, entering the combustion
chamber at an orifice which extends across the flue or passage, allowing
the air to become mixed with the unconsumed gases in the combustion
chamber, thus preventing the emission of smoke.
The size of the combustion chamber should bo proportionate to that of
the furnace, and the use of a regulating damper may be dispensed, with
in some cases.
Having thus described and ascertained the nature of the said In.
vention, I will now in further compliance with the condition in the said
Letters Patent contained, proceed to more fully and particularly described
and ascertain the same with reference to the accompanying Drawing,

page_text: therein particularly describing and ascertaing in what manner the same
is to be performed or carried out in practice.
DESCRIPTION OF THE DRAWING.
The Drawing shows the application of my Invention to a Cornish
boiler, by a longitudinal section in which A represents the flue or
passage of such boiler; B, B, being the fire-bars of the furnace, and the
arrows represent the course of the fluids or gases from the furnace
which pass over a bridge D and are deflected by the drop or inverted
partition or bridge E into a combustion chamber F which is formed by
another partition or bridge G. Air being admitted into it through ash-
pit H and regulating damper K, that enters the combustion chamber at
an orifice L which extends across the flue or passage, allowing the air to
become mixed with the unconsumed gases in the combustion chamber,
thus preventing the emission of smoke.
Different dimensions of combustion chambers may be required for
different sizes of furnaces, and a regulating air damper may or may not
be used to admit and regulate the quantity of air into the said chamber,
as this can be done through the fire hole doorway.
Having now particularly described and ascertained the nature and
object of my said Invention, and in what manner the same is to be per-
formed and carried out in practice, I hereby declare that I claim the
Invention of "Improvements in Consuming or Preventing Smoke," tho
nature or character whereof is herein-before described by the words
preceeding the words "Description of the Drawing," which said
Invention is illustrated by the Drawing accompanying these Presents.
In witness whereof, I, the said David Jones, have hereunto set
my hand and seal, this Twenty-sixth day of September, in
the year of our Lord One throusand eight hundred and seventy.
four.
Witness,
JAS. FORSYTH,
Inverness.
DAVID JONES. (L.S.)