IN- PROVEMENTS IN APPARATUS FOR SUPPLYING WITH FUEL THE FURNACES OF STEAM BOILERS AND OTHER FURNACES, AND IN THE METHOD OF CLEANING THE FIRE BARS THEREOF
Year: 1856

page_text: LETTERS PATENT to William Astbury Jump, of Moulton, near Northwich,
in the County of Chester, Salt Manufacturer, for the Invention of " IN-
PROVEMENTS IN APPARATUS FOR SUPPLYING WITH FUEL THE FURNACES OF
STEAM BOILERS AND OTHER FURNACES, AND IN THE METHOD OF CLEANING THE
FIRE BARS THEREOF."
Sealed the 16th January 1857, and dated the 19th July 1856.
PROVISIONAL SPECIFICATION left by the said William Astbury Jump
at the Office of the Commissioners of Patents, with his Petition, on the
19th July 1856.
I, WILLIAM ASTBURY JUMP, of Moulton, near Northwich, in the County of
Chester, Salt Manufacturer, do hereby declare the nature of the said Inven-
tion of "IMPROVEMENTS IN APPARATUS FOR SUPPLYING WITH FUEL THE FURNACES
OF STEAM BOILERS AND OTHER FURNACES, AND IN THE METHOD OF CLEANING THE
FIRE BARS THEREOF," to be as follows:-
These improvements consist, firstly, in an improved mode of supplying fuel
to the fire by mechanical means; and, secondly, in an arrangement by which
the fire bars of furnaces may be cleaned at any time without hindrance or
stoppage of the furnace.
The following are the means by which these improvements may be effected :-
First, as regards the improved mode of supplying fuel to the fire. I form the
furnace with long slits or openings in the crown thereof in a transverse

page_text: direction, and surmount the same with a hopper for containing fuel, and
beneath the said openings, and at each side thereof, I place a tube or pipe,
each end whereof is connected to the side of another pipe communicating
with an ordinary steam boiler, from which the water passes and circulates in
the aforesaid pipes. A rod passes through the front of the furnace, and is
connected to an eccentric rod for imparting reciprocating motion thereto, and
to pushers or blocks fixed within the furnace to the first-mentioned rod. The
operations of the above arrangement are as follows:-The coal from the
hopper falls by its gravity upon the solid parts of the furnace top, and
supposing the aforesaid pushers to be drawn outwards, the next impulse of the
pushers will push the fuel before them, the fuel falling through the aforesaid
slits or openings on to the fire. The bottom of the hopper is constructed with
two openings, each of which comes immediately over the solid parts which
are beneath, so that the fuel cannot pass from the hopper on to the fire except
by the action of the aforesaid pushers.
And as regards the improved method of cleaning the fire bars, it consists in
arranging the bars in a frame of about twice the width of the furnace, said
frame passes crosswise of the furnace through openings formed therein, which
are kept tight by luting. The bottom of the aforesaid frame rests upon anti-
friction rollers, and has a rack formed thereon, the teeth whereof take into a
pinion fixed on a cross shaft, on which a winch handle fits, for imparting
motion to the said pinion and fire bars connected therewith.
In operating with fire bars thus arranged, when it is desired to clean those
bars which are within the furnace, it is necessary, before removing them there-
from to kindle a fire upon those bars which are outside the furnace, so that as
one fire is withdrawn, another is introduced, and by these means the stopping
of the furnace and lowering of the temperature within the boiler is avoided.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Astbury Jump in the Great Seal Patent Office on
the 19th January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ASTBURY JUMP, of Moulton, near Northwich, in the County of Chester, Salt
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of July, in the year of our Lord One
thousand eight hundred and fifty-six, in the twentieth year of Her reign, did,

page_text: for Herself, Her heirs and successors, give and grant unto me, the said William
Astbury Jump, Her special licence that I, the said William Astbury Jump,
my executors, administrators, and assigns, or such others as I, the said
William Astbury Jump, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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
APPARATUS FOR SUPPLYING WITH FUEL THE FURNACES OF STEAM BOILERS AND
OTHER FURNACES, AND IN THE METHOD OF CLEANING THE FIRE BARS THEREOF,"
upon the condition (amongst others) that I, the said William Astbury
Jump, 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 William Astbury Jump, 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:-
My said improvements consist, firstly, in an improved mode of supplying 'fuel
to the fire of steam engine boiler and other furnaces by mechanical means;
and, secondly, in an arrangement by which the fire bars of furnaces may be
cleaned at any time without hindrance or stoppage of the furnace-fire.
And for the better understanding of the same, I will now proceed to detail
the particulars thereof, reference being had to the Drawings hereunto annexed,
in which the same letters indicate like parts throughout.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a sectional side elevation of my improvements for supplying
fuel, as applied to a furnace with supplementary boiler; and Figure 2 is a
transverse section through the supplementary boiler and furnace. A, the
furnace; B, ash-pit; C, fire bridge; D, flame bed; E, supplementary boiler;
E, part of main boiler, or a salt pan; F, F, slots or holes to allow the coal
to drop on the fire; a, a, water pipes, proceeding from a boiler, may be
set under the slots, if desired; G, G, coal pushers or blocks, operated by
the eccentric H, which is raised or lowered by studs fitted on the rod I, con-
nected with the horizontal rod J, thereby moving the pushers backwards and

page_text: forwards, discharging coal through the slots as supplied from the hopper K,
and the action of the pushers may be regulated by guide rods, or like means;
L, L, the fire grate framing.
The fire grates A¹ and A" are connected by one frame, of which B' and
Bare two outside portions, and B the centre portion; to one end, as at
Bu, a rack and pinion C', C", may be affixed, the sides of the frame rest on
friction rollers or wheels a', a', a¹; the ends and middle portion of the frame
B', B, and B, may be made hollow, and have channels b, b, b, b, on their
top edges, into which the lower edge of the doors or flaps, c, c, may fall, and
be closed with sand; D₁, D, pillars or walls used as rests or supports, cor-
responding with D", D", of the furnace at the same level; E, supplementary
boiler, with side water spaces E", E". To clean the furnace fire bars A¹, I
light a fire on the grate A", raise the doors c, c, drive the rack C' in the direc-
tion of the arrow, by which the frame-work carrying the two grates will be
set in motion, eased by the antifriction rollers, and the grate A" will occupy
the furnace, leaving the grate A' resting with one end on the wall D¹, in
which situation the clinkers may be removed, and the bars cleaned or changed
for a renewed operation when required. The deads or portions of the frame
B₁, B, B, serve to fill up the spaces in the sides of the furnace, which can
be afterwards luted.
I would here observe, as regards my improved mode of supplying fuel to
the furnace fire, that I form the top part or crown of the furnace with long
slits or openings in the same, in a transverse direction, and surmount them
with a hopper for containing fuel; and for the purpose of distributing the fuel
uniformly, there may be beneath the said openings, and at each side thereof
when required, a tube or pipe, having each end connected to the side of
another pipe communicating with an ordinary steam boiler, from which the
water passes and circulates in the aforesaid pipes. The discharge of the fuel
from the hopper into the furnace is effected and regulated by a rod passing
through the front or other top part of the furnace, and is connected to an
eccentric crank or cam rod, for imparting reciprocating motion thereto, and
to pushers or blocks fixed to the first-mentioned rod. Supposing the pushers
or blocks to be drawn outwards, the next impulse or return stroke of the
pushers will push the fuel before them, the fuel falling through the slits or
openings on to the fire. The bottom of the hopper is constructed with one,
two, or more openings, each being immediately over the solid or top part of
the exterior of the furnace, leaving only space sufficient for the easy backward
and forward motion of the pushers or blocks.
And as regards my improvements in relation to the fire bars and grates of

page_text: furnaces, the same consist in arranging the bars in a frame of about twice the
width of the furnace, the said frame passing crosswise of the furnace through
openings formed therein, which are kept sufficiently tight by sand or luting.
The bottom of the frame rests upon antifriction rollers, and has a rack formed
thereon, the teeth of which take into a pinion fixed on a cross shaft, operated
by a winch handle, for imparting motion to the said pinion and fire bars.
When it is desired to clean those bars which are within the furnace, I
recommend, before removing them, to kindle a fire upon the outside grate, so
that when one fire grate is withdrawn, another may be simultaneously intro-
duced, by which means the temperature is maintained.
Having thus fully described one methed of carrying my said Invention into
practical operation, I desire it to be understood that my said improvements
may be considerably modified to suit different furnaces. I do not, therefore,
restrict myself to the precise details herein given, nor to materials, dimensions,
or the situation of the several parts, so long as the principle of my said In-
vention is substantially adhered to; and I do declare that what I claim is,―
namely, the peculiar improvements in apparatus for mechanically supplying
fuel to furnaces, and in the fire bars or grates thereof, as described.
In witness whereof, I, the said William Astbury Jump, have hereunto
set my hand and seal, this Sixteenth day of January, in the year of our
Lord 1857.
WILLIAM ASTBURY JUMP. (L.S.)