IMPROVEMENTS IN OB APPLICABLE TO JUCKES FURNACE
Year: 1867

page_text: LETTERS PATENT to Atwood Wigzell and Eustace Wigzell, of the Firm
of Timothy Bates and Co., of Sowerby Bridge, in the County of York,
Engineers and Millwrights, for the Invention of "IMPROVEMENTS IN OB
APPLICABLE TO JUCKES FURNACE,"
PROVISIONAL SPECIFICATION left by the said Atwood Wigzell and
Eustace Wigzell at the Office of the Commissioners of Patents, with
their Petition, on the 24th August 1867.
We, ATWOOD. WIGZELL and EUSTACE WIGZELL, of the Firm of Timothy
Bates and Co., of Sowerby Bridge, in the County of York, Engineers and Mill-
wrights,do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN, OR APPLICABLE TO JUCKES' FURNACE," to be as follows:-
This Invention relates to that class of steam boiler furnaces wherein the
grate bars are linked end to end together, forming an endless chain, to which
travelling motion is given, and known as Juckes' furnace," for which Letters-
Patent were granted on the 14th September 1841, No: 9067.
[Price 8d.]
+1

page_text: Our improvements consist in the employment of two endless chains running
longitudinally one on each side of the furnace, which are connected by portable
rods at suitable distances apart. The grate bars are hinged at one end only
to these rods, the other end of each being loose and so formed as to rest upon
the hinged end of another when in proper position in the furnace, but when
passing out of the furnace into the ashes pit they tumble over or drop open,
and thereby clear themselves from clinkers; and in order that this clearing
may be the more effectual we place stops at suitable intervals, which only allow
them to drop one by one. This construction and arrangement will admit of
any bar or bars being readily removed 'and replaced without deranging the
furnace, also gives ample air opening, with easy. means of..cleaning and
repairing. The usual means of driving or travelling these chains and bars
may be adopted, such as are now used for driving Juckes' furnace bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Attwood Wigzell and Eustace Wigzell in the Great Seal
Patent Office on the 24th February 1868...
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ATWOOD
WIGZELL and EUSTACE WIGZELL, of the Firm of Timothy Bates and Co., of
Sowerby Bridge, in the County of York, Engineers and Millwrights, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of August, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Her heirs and successors, give and grant.unto us,
the said Atwood Wigzell and Eustace Wigzell, Her special licence that
we, the said Atwood Wigzell and Eustace Wigzell, our executors, adminis-
trators, and assigns, or such others as we, the said Atwood Wigzell and
Eustace Wigzell,our executors, administrators, and assigns, should at anytime
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
OR APPLICABLE TO JUKES FURNACE," upon the condition (amongst others) that
we,the said Atwood Wigzell and Eustace Wigzell, our executors or adminis--
trators, by an instrument in writing under our, or their, tor one of our or their
hands and seals, should particularly describe and ascertain the nature of the

page_text: 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 iminediately after the date of the 'said Letters Patent.
.....NOW KNOW YE,that we the said Atwood Wigzelland Eustace Wigzell,do
hereby-declare the nature of our said Invention, and in what manner the same
is to be performed, to be particularly described and ascertainedsin, and by the
following statement thereof and accompanying Sheet of Drawings (that is
to say):
1.
- the
This Invention relates to that class of steam boiler furnaces wherein the
grate bars are linked end to end together, forming an endless chain, towhich
travelling motion is given, and known as Jukes' furnace, for which Letters
Patent were granted bearing date the 4th day of September 1841, No..9067.
Our improvements consist in the employment of two.endless chains running
longitudinally one on each side of the furnace, which are connected..by.port-
nable rods at suitable distances apart. The grate bars are hinged at one end
only to these rods, the other end of each being loose and so formed as.to, rest
upon the hinged end of another when.in:proper position.in the furnace, but
when passing out of the furnace into the ashes-pit they tumble over or drop
hopen; and thereby clear themselves from clinkers; and in order that this
clearing may be the more effectual we place stops at suitable intervals, which
only. allow them to drop. one by one: This construction and arrangement
will admit of any bar or bars being readily removed and replaced without
deranging the furnace, also gives ample air opening, with easy means of
cleaning and repairing. The usual means of driving or travelling these chains
and bars may be adopted, such as are now used for driving Jukes' furnace
bars.
ff
DESCRIPTION OF THE DRAWINGS.
7.
.........
yby.
In order that our said Invention may be clearly understood we herein
give reference to an accompanying Sheet of Drawings, wherein Fig. is a
longitudinal section of a Jukes' furnace or fire-bed and apparatus for feeding
fuel with our improvements applied thereto, shewn as-placed under a boiler
in the usual manner: "This furnace or apparatus being so well known it is
unnecessary to describe it in detail, suffice it to be stated that a carriage-A-is
employed of ordinary construction mounted on wheels B, and which runs on
rails C to enable it to be moved into and out of place; but instead of the ordi-
nary grate bars-linked end to end and carried on drums we employ shafts
with pullies D and D¹ fixed thereon, carrying two endless chains E, one on
each side of the fire-bed. These chains are so constructed that rods F can be

page_text: readily placed across from one chain to the other, and supported thereby at
suitable distances apart. On each of these rods are hinged by one end only
a series of grate bars G, and these grate bars are so formed and arranged that
the hinged ends of one series of bars become supports to or for the loose ends
of the next series of bars, so that when the grate bars are in position on the
upper sides of the chains they form an ordinary fire-bed, but as they arrive at
and pass over the shaft of the back end pullies D¹ they tumble over in the
manner and into position shewn on these Drawings, each bar being separately
hinged on the rods. In order to ensure complete separation of one bar from
another, and thereby break off all clinkers that may adhere to them, stops H
are placed so that each alternate bar (or otherwise as may be arranged) may
in tumbling over drop on one of these stops, and be thereby temporarily stopped
while the adjoining ones pass forward. Figs. 2 and 3 shew these tumbling
grate bars drawn half full size,aud Fig. 4 shews a side view of one of the links
of the endless chain, having a hole in the middle to receive the rods which
carries the tumbling grate bars, or on which they are hinged; Fig. 5 is a
longitudinal section of our improved apparatus as applied to a fire-box
or flued boiler. The general features are the same as previously described, the
framing being however constructed suitably to fit the flue; and in this case
the loose ends of the grate bars trail on the bottom of the flue when they are
under the chains, and thereby draw out the clinkers and ashes to the front of
the furnace where they fall into a box or waggon J. In carrying this Inven-
tion into practical operation we find it advantageous to apply a hollow metal
bridge K at the back part of the furnace, connected by two pipes L to the
boiler, so that water may circulate through it, and which is so formed and
fixed as to allow clinkers and ashes to pass under it, but prevents any large
quantity of fuel passing away, a roller M being placed immediately under to
support the chains against the pressure caused by the clinkers passing through
the opening; we also apply a fire-brick arch N over the front end of the
furnace to assist in igniting the fire.
Having thus fully described the nature of our said Invention, and shewn
the manner in which the same is or may be performed or carried into practical
effect, we would have it understood that we do not claim all the parts of the
apparatus referred to, nor do we confine ourselves to the precise details of
arrangement as herein shewn and described; but what we claim as of our
Invention is,―
Firstly. The application to Jukes' furnaces of tumbling grate bars or bars
hinged at one end only on portable rods, supported and carried by endless

page_text: Secondly. The general arrangement and combination of parts of apparatus
ubstantially as herein shewn and described.
In witness whereof, I, the said Atwood Wigzell, for and on behalf of
myself and the said Eustace Wigzell, have hereunto set my hand and
seal, this Twenty-second day of February; One thousand eight hundred
and sixty-eight.
Signed, sealed, and delivered
by the within-named Atwood
Wigzell, in the presence of
WM TASKER,
Patent Agent,
ATWOOD WIGZELL. (L.S.)
Halifax & Bradford.