IMPROVEMENTS IN THE MODE OF AND APPARATUS FOR BURNING THE GASES ARISING FROM THE DISTILLATION OF LIQUID HYDROCARBONS, AND ALSO IN ECONOMIZING FUEL BY THE SAID PROCESS."
Year: 1867

page_text: LETTERS PATENT to George Dorsett, Edward Dorsett, and John Ben-
nington Blythe, all of London Street, in the City of London, Merchants,
for the Invention of "IMPROVEMENTS IN THE MODE OF AND APPARATUS FOR
BURNING THE GASES ARISING FROM THE DISTILLATION OF LIQUID HYDROCARBONS,
AND ALSO IN ECONOMIZING FUEL BY THE SAID PROCESS."
PROVISIONAL SPECIFICATION left by the said George Dorsett, Edward
Dorsett, and John Bennington Blythe at the Office of the Commissioners
of Patents, with their Petition, on the 26th October 1867.
We, GEORGE DORSETT, EDWARD DORSETT, and JOHN BENNINGTON BLYTHE,
all of London Street, in the City of London, Merchants, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE MODE OF AND
APPARATUS FOR BURNING THE GASES ARISING FROM THE DISTILLATION OF LIQUID
HYDROCARBONS, AND ALSO IN ECONOMIZING FUEL BY THE SAID PROCESS," to be as
follows:-
We burn the gases produced by the distillation by heat of liquid hydro-
carbons, such as coal tar, creosote, coal and shale oil, petroleum, and other
matters of a like nature in the following manner:-We cause the gas
produced from the matter under distillation (such as coal tar at that stage of
the process in which the heavy oil has commenced to run from the worm) to
pass through a pipe commencing at the top of the boiler or retort and
terminating in the ash-pit or furnace; we then burn it either by allowing it

page_text: to pass through the fire on the grate bars through a burner formed with a
series of holes or upon a diaphragm, as in the case of the ordinary gas burners
used for cooking; this part of our process is particularly adapted for application
under tar and petroleum stills.
In the case of marine steam boilers we produce the gas by the distillation
of the bydrocarbon fuel in retorts heated by a communication with the furnace
or otherwise, and placed close to the boiler. From these retorts the gas
passes through pipes heated externally by steam or otherwise into the ash-pits
of the boiler furnaces, where it is burnt in the manner above described upon
the grate bars, or by passing it through the fuel.
By employing two or more retorts communicating with each other, com-
bustion would go on without the risk of stopping to clean out the coke formed
in the pipes, as in the apparatus now proposed for burning bydrocarbon
matters. The same grate would burn coal, coke, or other fuel separately, or
increased in their heating power by the gas being passed through the fire, ns
our process would not change the form of the furnace nor encumber it with
pipes or any other apparatus. A door is formed at the front of each ash-pit to
admit the necessary amount of air for the perfect combustion of the gases.
We effect a considerable economy of fuel in ordinary boilers by allowing steam
from the boiler itself to pass through a pipe heated by the flues of the boiler
and into a closed cistern or iron vessel containing liquid bydrocarbon, and
allowing the vapour to escape into the ash-pit to be burned in passing through
the heated grate.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Dorsett, Edward Dorsett, and John Bennington
Blythe in the Great Seal Patent Office on the 24th April 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
DORSETT, EDWARD DORSETT, and JOHN BENNINGTON BLYTHE, all of London
Street, in the City of London, Merchants, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters a
Patent, bearing date the Twenty-sixth day of October, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said George Dorsett, Edward Dorsett, and John Bennington Blythe, Her
special licence that we, the said George Dorsett, Edward Dorsett, and John
Bennington Blythe, our executors, administrators, and assigns, or such others

page_text: as we, the said George Dorsett, Edward Dorsett, and John Bennington
Blythe, our 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 THE
MODE OF AND APPARATUS FOR BURNING THE GASES ARISING FROM THE DISTILLATION
OF LIQUID HYDROCARBONS, AND ALSO IN ECONOMIZING FUEL BY THE SAID PROCESS,"
upon the condition (amongst others) that we, the said George Dorsett,
Edward Dorsett, and John Bennington Blythe, our executors or adminis-
trators, by an instrument in writing under our, 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 we, the said George Dorsett, Edward Dorsett,
and John Bennington Blythe, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be particularly
described, and ascertained in and by the following statement thereof (that is
to say)
We burn the gases produced by the distillation by heat of liquid hydro-
carbons, such as coal tar, creosote, coal and shale oil, petroleum, and other
matters of a like nature, in the following manner :-We cause the gas produced
from the matter under distillation (such as coal tar at that stage of the process
in which the heavy oil has commenced to run from the worm) to pass through
a pipe commencing at the top of the boiler, generator, or retort, and terminating
in the ash-pit or furnace; we there burn it either by allowing it to pass through
the fire on the grate bars, or through a burner formed with a series of holes,
or upon a diaphragm as in the case of the ordinary gas burners used for
cooking. This part of our process is particularly adapted for application
under tar and petroleum stills.
In the case of marine steam boilers we produce the gas by the distillation
of the hydrocarbon fuel in retorts or generators heated by a communication
with the furnaces or otherwise and placed close to the boiler; from these
retorts or generators the gas passes through pipes heated externally by steam,
or otherwise into the ash-pits of the boiler furnaces, where it is burnt in the
manner above described upon the grate bars or by passing it through the fuel.
By employing two or more retorts or generators communicating with each
other, combustion would go on without the risk of stopping to clean out the

page_text: coke formed in the pipes as in the apparatus now proposed for burning hydro-
carbon matters. The same grate would burn coal, coke, or other fuel
separately or increased in their heating power by the gas being passed through
the fire, as our process would not change the form of the furnace nor encumber
it with pipes or any other apparatus. A door is formed in front of each
ash-pit to admit the necessary amount of air for the perfect combustion
of the gases. We effect a considerable economy of fuel in ordinary boilers by
allowing steam from the boiler itself to pass through a pipe heated by the flues
of the boiler and into a closed cistern or iron vessel containing liquid hydro-
carbons and allowing the vapour to escape into the ash-pit to be burned in
passing through the heated grate.
Having now described the nature of the said Invention we claim the use of
the gaseous vapour produced by heating in closed vessels in the same manner
as is generally employed for the distillation of liquid hydrocarbons in volume,
such gaseous vapour being afterwards distributed by pipes leading from the
closed vessel or generator into or under the furnaces required to be heated by
the combustion thereof.
In witness whereof, we, the said George Dorsett; Edward Dorsett, and
John Bennington, have hereunto set our hands and seals, this 22nd.
day of April 1808.
uay
UL
GEORGE DORSETT.
EDWARD DORSETT.
(L.S.)
(L.S.)
1
JOHN BENNINGTON BLYTHE. (L.S.)