IMPROVEMENTS IN- THE METHOD OF INJECTING AND USING PULVERISED OR GRANULATED FUEL INTO FIRE PLACES FOR GENERATING HEAT IN BOILER AND OTHER FURNACES
Year: 1873

page_text: LETTERS PATENT to John Martin Stanley, of Sheffield, in the
County of York, Engineer, for the Invention of " IMPROVEMENTS IN-
THE METHOD OF INJECTING AND USING PULVERISED OR GRANULATED FUEL
INTO FIRE PLACES FOR GENERATING HEAT IN BOILER AND OTHER FURNACES.”
Sealed the 13th March 1874, and dated the 27th September 1873.
PROVISIONAL SPECIFICATION left by the said John Martin Stanley.
at the Office of the Commissioners of Patents, with his Petition,
on the 27th September 1873.
I, JOHN MARTIN STANLEY, of Sheffield, in the County of York,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE METHOD OF INJECTING AND USING PULVERISED OR Granu-
LATED FUEL INTO FIRE-PLACES FOR GENERATING HEAT IN BOILER AND OTHER
FURNACES," to be as follows:-
The object of this Invention is to secure a regular and constant.
supply of fuel in the fire-places of boiler and other furnaces by self-
acting appliances, thereby effecting a great saving of labour, a more

page_text: complete combustion of fuel, and consequently a considerable economy,
and which object I attain by the following means :—
The fire-places I prefer to use may be of any suitable size and shape;
they are formed in brickwork with a solid bottom, the same or similar
to that described in the Specification of a Patent granted to me, dated
the 6th day of March, A.D. 1868, and numbered 775. Into this fire-
place I admit one end of a metal pipe, herein-after called a feed pipe;
this feed pipe may be placed either vertically, horizontally, or at any
angle; the outer end thereof is open to the atmosphere. Above and
connected with this feed pipe I fix a hopper, into which the pulverised
fuel is placed, having a neck with a valve fixed therein for the purpose
of regulating the supply of the said fuel to the fced pipe. In the centre
of the said feed pipe and immediately in front of its junction with the
neck of the hopper I inject a jet of steam, by preference superheated
steam, which jet of steam induces and propels the fuel through the feed
pipe into the fire. The quantities of steam and fuel are regulated, and
their proper proportions adjusted by means of valves provided for the
purpose..
Before my improved method of supplying fuel is put in operation it is
necessary that the fire should be lighted in the fire-place and be raised
to the requisite heat for igniting the pulverised fuel immediately on its
injection therein. This fire may be made with any ordinary, fuel and be
lighted in the usual way.
I prefer that the pulverised fuel should be impelled into the fire-place
in such a manner that it will fall on the side or bottom thereof, so as to
rebound or obtain a whirling motion therein in order to secure its more
thorough combustion in such fire-place before the heat passes to its
destination.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of September, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Martin Stanley, Her special
licence, that I, the said John Martin Stanley, my executors, administra-
'tors, and assigns, or such others as I, the said John Martin Stanley, 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
"IMPROVEMENTS IN THE METHOD OF INJECTING AND USING PULVERISED or Granu-
LATED FUEL INTO FIRE-PLACES FOR GENERATING HEAT IN BOILER AND OTHER-
FURNACES," upon the condition (amongst others) that I, the said John
Martin Stanley, 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 within six calendar months.
next and immediately after the date of the said Letters Patent.
•
NOW KNOW YE, that I, the said John Martin Stanley, 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 the following statement :-
•
The object of this Invention is to secure a regular and constant supply
of fuel in the fire-places of boiler and other furnaces by self-acting
appliances, thereby effecting a great saving of labour, a more complete.
combustion of fuel, and consequently a considerable economy.
The fire-places I prefer to use may be of any suitable size and shape;
they are formed in brickwork with a solid bottom, the same or similar
to the fire-place described in the Specification of a Patent granted to me,
dated the Sixth day of March, 1868, and numbered 775.
In order that my said Invention may be more easily and more fully
understood and be more readily performed I now proceed to explain the
same with the aid of the accompanying Drawing which forms part of
this Specification, reference being made thereto by the numerals and

page_text: letters marked thereon, which reference applies to each. Figure of the
said Drawing, where the same index numerals and letters appear.
Figure 1 is a perspective view of a furnace shewing the hopper and
steam pipe.
Figure 2 is a longitudinal section through the centre of the same 5
shewing my internal arrangements.
}
Into the fire-place a I admit one end of a metal pipe b, herein-after :
called the feed pipe; above this feed pipe and connected with it I fix a
hopper c, into which the pulverised fuel is placed, having a neck c¹ with
a valve or slide c² fixed therein for the purpose of regulating the supply -1
of the said fuel to the feed pipe. This feed pipe may be fixed hori-
zontally as at 6¹ or at any angle. In the centre of the said feed pipe
and near its junction with the neck c¹ of the hopper c I insert a pipe d,
through which I inject a jet or jets of steam, by preference superheated.
steam, into and through the feed pipe, which jet of steam induces and. 1
propels the fuel through the said feed pipe into the fire-place. The
quantities of steam and fuel are regulated and their proper proportions
adjusted by means of valves provided for the purpose.
Before my improved method of supplying fuel is put in operation it is
necessary that the fire should be lighted in the fire-place and be raised to
the requisite heat for igniting the pulverised fuel immediately on its
injection therein. This fire may be made with any ordinary fuel and be
lighted in the usual way.
I prefer that the pulverised fuel should be impelled into the fire-place
in such a manner that it will fall on the side or bottom thereof, so as to
rebound or obtain a whirling motion therein in order to secure its more"
thorough combustion in such fire-place before the heat passes to its
destination.
Having thus fully described the nature of my said Invention and the
method of performing the same, without binding myself to the precise
dimensions of the details and to the positions of the feed pipe and steam
pipe now illustrated, I claim as my Invention and desire to secure by
the before-mentioned in part recited Letters Patent the method of
injecting pulverised or granulated fuel into furnaces by a jet or jets of
steam, and the mode of regulating the supply of both fuel and steam,

page_text: substantially as and for the purposes herein described and shewn in the
Drawing.
In witness whereof, I, the said John Martin Stanley, have here-
unto set my hand and seal, this Twenty-first day of March,
in the year of our Lord One thousand eight hundred and seventy-
four.
JOHN MARTIN STANLEY. (L.S.)