IMPROVE- MENTS IN LOCOMOTIVE BOILER FURNACES
Year: 1865

page_text: LETTERS PATENT to John Jückes, junior, of 1, Armagh Road South,
Old Ford, Bow, and John Swinburne, of 32; Wenlock Street, City
Road, both in the County of Middlesex, for the Invention of "IMPROVE-
PROVISIONAL SPECIFICATION left by the said John Juckes and John
Swinburne at the Office of the Commissioners of Patents, with their
Petition, on the 25th July 1865.
We, JOHN JUCKES, junior, of 1, Armagh Road South; Old Ford, Bow, and.
JOHN SWINBURNE, of 32, Wenlock Street, City Road, both in the County of
Middlesex, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN LOCOMOTIVE BOILER FURNACES," to be as follows:-
This Invention has for its object improvements in locomotive.. boiler
furnaces. In order to adapt an endless system of fire-bars to the furnaces
of locomotive boilers the following combined arrangement is applied:-The
endless chain of bars is supported and carried by barrels, one at each end.
The barrel which carries the endless chain at one end is cogged or formed
with a surface suitable for driving the chain when the roller is rotated. The
axis of this barrel turns in bearings, on the framing of the locomotive engine,

page_text: and such axle has fixed on it a ratchet wheel which receives motion by a
connecting rod and driver actuated by an excentric on one of the axles of the
locomotive engine. The axis of the other barrel,, which is under the fire-box
or furnace of the locomotive engine, turns in bearings carried by a frame, one
end of which frame is supported by necks or axes in such manner that the
further end of the frame is capable of being lowered so as to discharge the
fuel from the fire-bars; this further end of the frame has plates fixed or
formed on it, which are slotted, and through the slots a cranked axle passes,
and there are also outside plates supporting the bearings of the cranked axle.
On one end of the cranked axle is a screw wheel, into which a screw gears,
the shaft or axis of which is extended, so that by a wheel or handle thereon
the engine man can readily turn it, and thus raise or lower the end of the
frame which carries the endless chain of fire-bars. One of the barrels is
capable of being adjusted away from the other, in order to compensate for
the wear of the chains. At the fire-door end of the furnace or fire-box there
is a hopper having at its bottom a sliding door, by which the quantity of fuel
taken into the 'fire-bars is regulated. Within the furnace or fire-box, near the
door, there is an arch of fire-brick. At the other end of the furnace is a
water pipe, through which water is circulated, and over this a bridge of fire-
clay. When at work the endless chain of fire-bars is raised to the highest
position, or somewhat below it, as occasion may require, in order to regulate
its position in respect to the water pipe above. When the furnace is divided
more than one endless chain of fire-bars is employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Juckes and John Swinburne in the Great Seal Patent
Office on the 25th January 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
JUCKES, junior, of 1, Armagh Road South, Old Ford, Bow, and JOHN
SWINBURNE, of 32, Wenlock Street, City Road, both in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of July, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said John Juckes and John Swinburne, Her 'special licence that we,
the said John Juckes and John Swinburne, our executors, administrators,

page_text: and assigns, or such others, as we, the said John Juckes and John Swinburne,
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
LOCOMOTIVE BOILER FURNACES," upon the condition (amongst others), that we,.
the said John Juckes and John Swinburne, our executors or administrators,.
by an instrument in writing under our or their hands and seals, or under the
hand and seal of one of us or them, 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 Juckes, on behalf of myself and
the said John Swinburne, 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 locomotive boiler.
furnaces. In order to adapt an endless system of fire-bars to the furnaces;
of locomotive boilers the following combined arrangement is applied:-The
endless chain of bars is supported and carried by barrels, one at each end..
The barrel which carries the endless chain at one end is cogged or formed
with a surface suitable for driving the chain when the roller is rotated. The
axis of this barrel. turns in bearings on the sides of furnace or frames, and
such axle has fixed on it a ratchet wheel, which receives motion by &
connecting rod and driver actuated by an excentric on one of the axles, of
the locomotive engine. The axis of the other barrel, which is under the
fire-box or furnace of the locomotive engine, turns in bearings carried by a
frame, one end of which frame is supported by necks or axes in such manner
that the other end of the furnace is capable of being lowered so as to discharge
the fuel from the fire-bars. The further end of the frame has plates fixed or,
formed on it, which are slotted, and through the slots a cranked axle passes,
and there are also outside plates supporting the bearings of the cranked axle.
On one end of the cranked axle. is a screw wheel, into which a screw, gears,
the shaft or axis of which is extended, so that by a wheel or handle thereon
the engine man can readily turn it,, and thus raise or lower the end; of the
frame which carries the endless chain of fire-bars. One of the barrels is

page_text: capable of being adjusted away from the other, in order to compensate for the
wear of the chains. At the fire-door end of the furnace or fire-box there is a
hopper having at its bottom a sliding door, by which the quantity of fuel
taken on to the fire-bars is regulated. Within the furnace or fire-box, near
the door, there is an arch of fire-brick. At the other end of the furnace is a
water pipe, through which water is circulated, and over this a bridge of fire-
clay. When at work the endless chain of fire-bars is raised to the highest
position, or somewhat below it, as occasion may require, in order to regulate-
its position in respect to the water pipe above. When the furnace is divided
more than one endless chain of fire-bars is employed.
Having thus stated the nature of our said Invention, we will proceed more
fully to describe the manner of performing the same.
"DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a side elevation of part of a locomotive engine, partly in
section, having our Invention applied thereto; Figure 2 shows an end
elevation of the same; Figure 3 a plan of the same in section; Figure 4
shows part of a plan view of a system of endless fire-bars which are applied
to the fire-box in place of ordinary stationary fire-bars; these endless chains
of fire-bars may be formed according to any of the constructions now employed
in fixed furnaces, and separately they are not claimed as of our Invention.
The endless chains of fire-bars are carried by two drums, such as are shown
at Figure 6. At the back end of the fire-bars is a hollow water bridge
connected by pipes to the water cistern above the front end of the boiler, or
it may have another position in such manner as to allow the water to circulate
from and to and through the water bridge in like manner to water bridges
used in fixed furnaces where endless series of fire-bars are used.
a, a, is the endless series of fire-bars on the drums b, 6, the axes of which
are carried by the side framings c, c, which are fixed on either side, and at
the lower parts of the fire-box; these side framings c, c, turn on an axis fat
their back ends, which axis f is also the axis of the back drum, and the front
ends of these side framings are connected by a bar g. The axis of the other
drum is supported in slots in the side framings c, so as to admit of
adjustment of the endless chains of fire-bars, and to keep them sufficiently
tight. is a cranked axis which turns in bearings on each side of the
fire-box; the cranked portion of this axis passes through slots i, i, formed
through plates, 1, fixed to the side framings c, c. On one end of this
cranked axis is a screw wheel j, which is driven by a screw or worm k on the
shaft k, which when it is desired to drop the front end of the system of

page_text: endless fire-bars is turned by the handle, and the fire-bars are again
brought back into a horizontal position by turning the handle k in the
opposite direction. Motion is continuously given to the endless system of
fire-bars when the locomotive engine is in motion by means of an excentric
on one of the axles of the locomotive engine, which gives motion to the rod m,
which at its other end is pin jointed to the lever n, which gives motion to the
claw or driver o on the arm p, which is pin jointed to the lever n. The claw
or driver o gives motion to the ratchet wheel p², which is fixed on the axle of
the front drum of the endless system of fire-bars. q is a door which is raised
and lowered by the screw shaft r, in order to adjust the quantity of small coal
on the endless system of fire-bars. s is a hopper, into which the small coal is
fed on to the front end of the system of fire-bars.
Having thus described the nature of our Invention, and the manner of
performing the same, we would have it understood that what we claim is, the
combined arrangement of mechanism by which an endless system of fire-bars
is applied to the fire-box of a locomotive engine.
In witness whereof, I, the said John Juckes, have hereunto set my
hand and seal, this Twentieth day of January, in the year of our
Lord One thousand eight hundred and sixty-six.
JOHN JUCKES, JN³. (L.S.)