IMPROVEMENTS IN APPARATUS TO BE USED IN CONNECTION WITH STEAM BOILER AND OTHER FURNACES TO ADAPT THEM FOR
Year: 1867

page_text: LETTERS PATENT to Sutton Edward Crow, of Stratford, in the County
of Essex, for the Invention of "IMPROVEMENTS IN APPARATUS TO BE USED
IN CONNECTION WITH STEAM BOILER AND OTHER FURNACES TO ADAPT THEM FOR
"
Sealed the 10th December 1867, and dated the 14th June 1867.
PROVISIONAL SPECIFICATION left by the said Sutton Edward Crow
at the Office of the Commissioners of Patents, with his Petition, on the
14th June 1867.
I, SUTTON EDWARD CROW, of Stratford, in the County of Essex, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN APPARATUS TO
BE USED IN CONNECTION WITH STEAM BOILER AND OTHER FURNACES TO ADAPT THEM
FOR BURNING CREOSOTE AND OTHER COMBUSTIBLE LIQUIDS," to be as follows:-
This Invention has for its object improvements in apparatus to be used in
connection with steam boiler and other furnaces to adapt them for burning
creosote and other combustible liquids. I apply to the furnace at the front
thereof and at a point over the ordinary fire-bars a pipe regulated by a
tap, and connected with an elevated cistern through which the creosote, or
tar, oil, or other combustible liquid is conducted to the furnace, so that when
the tap is open the liquid flows from this pipe in a small stream. Imme-
diately below the mouth of the pipe already mentioned is the open end of

page_text: another pipe by which steam can be admitted to the furnace, and the jet of
steam issuing from this pipe strikes the stream of creosote or combustible
liquid and scatters it in spray throughout the furnace, and in this state it is
in great part consumed, whilst the remainder falls upon the coals or other
solid fuel or matter upon the fire-bars and is there burnt. When creosote
is used it deposits so much solid matter of a coke-like nature on the fuel
on the fire-bars that this fire will seldom or never require to be replenished,
but in other cases the fuel on the fire-bars as it burns away should be renewed
with coke or other solid fuel so that the fire-bars may always be covered
with ignited fuel. It is preferred that the steam admitted to the furnace
should be superheated. In place of steam a jet of air (by preference heated)
may be applied in a similar manner to disperse the stream of creosote or
combustible liquid as spray, and to assist in its complete combustion.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Sutton Edward Crow in the Great Seal Patent Office on the
14th December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SUTTON
EDWARD CROW, of Stratford, in the County of Essex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of June, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Sutton Edward Crow, Her special licence that I, the said Sutton Edward
Crow, my executors, administrators, and assigns, or such others as I, the
said Sutton Edward Crow, my 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 "IMPROVE-
MENTS IN APPARATUS TO BE USED IN CONNECTION WITH STEAM BOILER AND OTHER
FURNACES TO ADAPT THEM FOR BURNING CREOSOTE AND OTHER COMBUSTIBLE LIQUIDS,"
upon the condition (amongst others) that I, the said Sutton Edward Crow,
my executors or administrators, by an instrument 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

page_text: within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Sutton Edward Crow, do hereby
declare the nature of the 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 :--
This Invention has for its object improvements in apparatus to be used in
connection with steam boiler and other furnaces to adopt them for burning
creosote and other combustible liquids. I apply to the furnace at the front
thereof, and at a point over the ordinary fire-bars, a pipe regulated by a tap,
and connected with an elevated cistern through which the creosote, or tar, oil,
or other combustible liquid is conducted to the furnace, so that when the tap
is open the liquid flows from this pipe in a small stream. Immediately below
the mouth of the pipe already mentioned is the open end of another pipe by
which steam can be admitted to the furnace; both the pipes at their open ends
are horizontal or nearly so, and the jet of steam issuing from the steam pipe
strikes the stream of creosote or combustible liquid and scatters it in a spray
throughout the furnace, and in this state it is in great part consumed, whilst
the remainder falls upon the coals or other solid fuel or matter upon the fire-
bars and is there burnt. When creosote is used it deposits so much solid
matter of a coke-like nature on the fuel on the fire-bars that this fire will seldom
or never require to be replenished, but in other cases the fuel on the fire-bars
as it burns away should be renewed with coke or other solid fuel, so that the
fire-bars may always be covered with ignited fuel; it is preferred that the
steam admitted to the furnace should be superheated. In place of steam
a jet of air (by preference heated) may be applied in a similar manner to
disperse the stream of creosote or combustible liquid as spray, and to assist
in its complete combustion.
And in order that my said Invention may be most fully understood and
readily carried into effect I will proceed to describe the Drawings hereunto
annexed.
Steam
creosote or other combustible liquid according to my Invention.
a is the boiler with its fire-door a¹ and ash-pit a', and 6 is the brick work in
which it is set; these parts are of ordinary construction; c is a tank for con-
taining the creosote or other combustible liquid; it is erected as is shown at
some height above the boiler furnace; c is a pipe descending from this tank,

page_text: and connected with two or other number of smaller pipes c, c; these should
be about one-quarter inch internal diameter, and each pipe should have a
stop-cock upon it, as is shown; d is a steam pipe coming from the boiler, and
supplied with steam; it should be of twenty pounds pressure or more; this
pipe has a stop-cock upon it at d¹, and at the points where it comes opposite
the oil pipes it is fitted with small nozzles or tubes passing horizontally
through the front plate of the furnace. The oil pipes also are led round at
their lower ends so as to bring them parallel with the nozzles upon the steam
pipe, they both project a short distance into the furnace, as is clearly shown at
Figure 2, which represents a longitudinal section of the fire-box of the steam
boiler. Figure 3 shows separately and full size the ends of the pipes as they
project into the fire-box. It will be seen that the oil pipes project somewhat
beyond the end of the steam pipe or nozzle so that the creosote or liquid may
be exposed to the full force of the steam jet which will effectually scatter it
over the fire-box and break it up sufficiently to ensure the liquid being suffi-
ciently burnt. I would remark that any combustible liquid can be employed
in this manner, as far as the cost will admit, at the present time I believe the
use of creosote to be the most advantageous.
In working the apparatus when a fire has been lighted and the fire-bars are
well covered, the steam or air is turned on, and then the creosote or liquid is
admitted at first in small quantity, and the flow is gradually increased as may
be required, but not to such a degree as to cause the production of an undue
amount of smoke, or to cause the liquid to run through the fire-bars unburnt.
If the solid fuel is found to burn away it should be replenished, so that the
fire-bars may not be left uncovered.
Figure 4 is a longitudinal section and Figure 5 is a transverse section of
the apparatus in a slightly modified form; here the oil pipe e is surrounded
by a casing fitted into the front plate of the furnace; steam is admitted by
the pipe 9 into the casing, and it issues from the slots f¹at the front of it;
h, h, are air pipes to supply warm air into the furnace.
Figure 6 is a longitudinal section, and Figure 7 is a transverse section of
another arrangement in which the air pipes are not used, but an air space is
left around the casing where it passes through the front case of the furnace.
In place of steam, air under pressure may, as already mentioned, be similarly
employed; the air pipes or air spaces around the pipes or the casing are not
then required.
In all these several modifications of the apparatus it will be observed that
the jet or jets of steam under pressure (or it may be of air) issue in a direction
parallel or nearly so with the ends of the oil pipe, and the orifice or orifices

page_text: from which the said jet or jets issue are behind the orifice of the oil pipe.
These conditions are essential to my Invention, the object of the arrangements
being to cause the jet or jets to carry the oil forward in a state of spray into
the hottest part of the furnace where it is for the most part burnt whilst held
suspended, and I avoid as much as possible, the so intermingling the oil
with the steam as to cause it to become vaporized and so diffused in the
furnace before it is ignited.
witness whomof I the said Sutton Edward Crow have hereunto set