IMPROVE- MENTS CONNECTED WITH THE FURNACES OF STEAM BOILERS ESPECIALLY ADAPTED FOR BURNING STRAW AND SUCH LIKE FUEL
Year: 1874

page_text: LETTERS PATENT to Thomas Morgan, Secretary of the Inventors'
Patent Right Association, Limited, 21, Cockspur Street, Charing
Cross, in the County of Middlesex, for the Invention of "IMPROVE-
MENTS CONNECTED WITH THE FURNACES OF STEAM BOILERS ESPECIALLY ADAPTED
FOR BURNING STRAW AND SUCH LIKE FUEL."--A communication from
abroad by Rohant Ponnae Tilwonthee of Tilienhothened
Russia
PROVISIONAL SPECIFICATION left by the said Thomas Morgan at the
Office of the Commissioners of Patents, with his Petition, on the
5th December 1874.
I, THOMAS MORGAN, Secretary of the Inventors' Patent Right Association,
Limited, 21, Cockspur, Street, Charing Cross, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
CONNECTED WITH THE FURNACES OF STEAM BOILERS ESPECIALY ADAPTED FOR
BURNING STRAW AND SUCH LIKE FUEL," a communication to me from
abroad by Robert Pearce Elworthy, of Elizabethgrad, Russia, to be
as follows:-
The objects of this Invention are to obtain in an ordinary steam

page_text: engine, especially of the portable kind, the increased capacity of fire-box
necessary for the combustion of the light kinds of fuel, such as straw,
sufficient to raise steam for working the engine to its full capacity;
to protect the lower parts of the fire-box from injury from the extreme
heat of the incandescent fuel; to afford a convenient means of intro-
ducing the fuel without admitting cold air through the fire-door,
avoiding the leakage of tubes which would otherwise result from this
cause
In the ordinary portable engine boiler I remove from or dispense
with the usual fire-bars, also the ash-pan and fire-door, and replace same
by the apparatus the subject of this Invention.
This apparatus consists of a cast (or wrought) iron frame cast cither
whole or in parts, and fastened together with bolts (or other fastenings)
and suspended with hooks to the ordinary angle iron bearers. This
frame might however be supported by other means in case the particular
construction of the boiler should make it more convenient. On two
sides of the frame are cast (or fastened) fingers, on the other two sides
are holes in which is carried the shaft or bar having on it cross bars.
These fingers, with the bar and cross bars, form the fire grate which
is placed as low as possible without interfering with the portability of
the engine by striking the ground when the engine is being moved
from' place to place. Those fingers and cross bars are spaced at
wide distances apart (say five inches) giving free passage of air for
combustion.
To prevent the passage of cold air up the sides of the fire-box the
sides of the frame may be turned in at the bottom, but in a greater or
less degree, as may be found advantageous. The bar is carried through
the front side of the frame, and is furnished with a handle at the outer
end, by means of which the bar may be rotated, the cross bars thus
effectually stirring down the ashes, and agitating the lower part of the
fire by the fireman moving the handle a few half turns when necessary.
The frame completely covers the lower corners and rivet joints of the
bottom edge of the fire-box, effectually preserving them from injury from
thic excessive heat of the incandescent fuel. When tlie frame itself
becomes burnt out it may be replaced with new castings just as common
fire-bars are renewed when worn out.

page_text: The space under the fire grate is completely enclosed by an iron or other
proper casing reaching from the lower edges of the boiler to the ground;
this casing is made in parts connected and suspended with bolts to the
existing ear pieces at the bottom edge of the boiler. This casing may
however be connected and supported by other convenient means in case
the peculiar construction of the boiler should make it desirable, at the
same time admitting of ready disconnection when the engine is to be
moved from place to place. This casing is provided with a door through
which to rake out the ashes; this door may be placed on any side
of the casing, but most conveniently on the left, behind the travelling
wheel.
For the more convenient introduction of the fuel the ordinary fire-door
is replaced by a special door with a conveniently shaped tube through
which the attendant passes a constant feed of straw, keeping the tube
full to prevent the admission of cold air.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Morgan in the Great Seal Patent Office
on the 5th June 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
MORGAN, Secretary of the Inventors' Patent Right Association, Limited,
21, Cockspur Street, Charing Cross, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of December, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thomas Morgan, Her special licence
that I, the said Thomas Morgan, my executors, administrators, and
assigns, or such others as I, the said Thomas Morgan, 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

page_text: CONNECTED WITH THE FURNACES OF STEAM BOILERS ESPECIALLY ADAPTED FOR
BURNING STRAW AND SUCH LIKE FUEL," a communication to me from
abroad by Robert Pearce Elworthy, of Elizabethgrad, Russia, upon
the condition (amongst others) that I, the said Thomas Morgan, my
exccutors or administrators, by an instrument in writing under my,
or their, or one of their hands and scals, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Morgan, 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 objects of this Invention are to obtain in an ordinary steam
engine, especially of the portable kind, the increased capacity of fire-
box necessary for the combustion of the light kinds of fuel, such as
straw, sufficient to raise steam for working the engine to its full
capacity to protect the lower parts of the fire-box from injury from
the extreme heat of the incandescent fuel; to afford a convenient
means of introducing the fuel without admitting cold air through
the fire-door, avoiding the leakage of tubes which would otherwisc
result from this cause.
In the ordinary portable engine boiler I remove from or dispense
with the usual fire-bars, also the ash-pan and fire-door, and replace same
by the apparatus the subject of this Invention.
This apparatus consists of a cast (or wrought) iron frame which if
cast may be cast either whole or in parts, and fastened together with
bolts (or other fastenings) and suspended with hooks to the ordinary
angle iron bearers. This frame might however be supported by other
means in case the particular construction of the boiler should make it
more convenient. On two sides of the frame are cast (or fastened)
fingers. On the other two sides are holes in which the shaft or bar
having on it cross bars is carried. These fingers, with the bar and cross
bars, form the fire grate which is placed as low as possible without
interfering with the portability of the engine by striking the ground
when the engine is being moved from place to place. The fingers and

page_text: cross bars are spaced at wide distances apart (say five inches) giving free
passage of air for combustion.
To prevent the passage of cold air up the sides of the fire-box the
sides of the frame may be turned in at the bottom, but in a greater or
less degree, as may be found advantageous. The bar is carried. through
the front side of the frame, and is furnished with a handle at the outer
end, by means of which the bar may be rotated, the cross bars thus
effectually stirring down the ashes and agitating the lower part of the
fire by the fireman moving the handle a few half turns when necessary.
The frame completely covers the lower corners and rivet joints of the
bottom edge of the fire-box, effectually preserving them from injury
from the excessive heat of the incandescent fuel. When the frame itself
becomes burnt out it may be replaced with new castings, just as common
fire-bars are renewed when worn out.
-
The space under the fire grate is completely closed by an iron
or other proper casing reaching from the lower edges of the boiler
to the ground; this casing is made in parts connected and suspended
with bolts to the existing car picces at the bottom edge of the boiler;
this casing may however be connected and supported by other means
in case the peculiar construction of the boiler should make it desirable,
at the same time admitting of ready disconnection when the engine
is to be moved from place to place. The casing is provided with a
door through which to rake out the ashes, which door may be placed
on any side of the casing, but most conveniently on the left, behind
the travelling wheel.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is front elevation; Figure 2 represents section on line V, W,
(Fig. 3); Figure 3 represents section on line X, Y, (Fig. 2); Figure 4
represents section on line S, T, (Fig. 3) showing plan of grate.
In these Figures an ordinary portable engine boiler of ten horse
power with my Invention adapted thereto is shown.
On said shaft or bar ƒ are
shaft or bar (f) and cross
placed as near the ground
a, a, d, d, denote the cast or wrought iron frame fastened together
either by bolts or other fastenings; c, c, hooks with which frame
a, a, d, d, is suspended to the angle iron bearers b, b; e, e, fingers
cast or fastened on two sides of the frame, and having on the other
two sides holes carrying the shaft or bar f.
cross bars g, g. The fingers (e, e,) with
bars (9, 9,) form the fire grate which is
as possible so as not to interfere with the portability of the engine.
The fingers (e, e,) and cross bars (9, 9,) are spaced at such distances
apart as to allow free passage of air for combustion; ½ is handle secured
to bar or shaft (ƒ), by means of which said bar or shaft may be rotated
and the cross bars (9, 9,) thus effectually stir down the ashes, which
is to be done by the fireman giving the handle (7) a few half turns
when necessary; k, k, casing enclosing the space under the firo grate;
n, n, door provided to the casing (k) through which to rake out the ashes;
o, door fitted in place of the ordinary fire-door, to which is secured the
tube p, through which the attendant passes a constant feed of straw,
keeping the tube p full to prevent the admission of cold air; Z shows
level for ordinary fire-bars.
Having now particularly described and ascertained the nature of the
said Invention, and in what manner the same is to be performed or
carried out in practice, I hereby declare that I claim, the general
construction and arrangements herein-before described and illus-
trated by the accompanying Drawings, and especially as regards the
means of feeding the furnace and stirring the incandescent fuel, sub-
stantially as the same are herein-before described. And I may here
remark that a furnace constructed according to this Invention is (as
will be obvious to the practical man) quite capable of being converted
with facility for the use of most kinds of furnace fuel. And it must be
understood that I do not limit myself to (nor do I claim) the precise