IMPROVEMENTS IN FURNACE BARS AND IN THE MODE OF MOUNTING OR SETTING FURNACE BARS " SP
Year: 1874

page_text: LETTERS PATENT to John Dodge, of Garden Row, London Road, in
the County of Surrey, Engineer, and Thomas Edghill Coles, of
Vulcan Wharf, Earl Street, Blackfriars, in the City of London,
Color Manufacturer, for the Invention of "IMPROVEMENTS IN FURNACE
BARS AND IN THE MODE OF MOUNTING OR SETTING FURNACE BARS
"
PROVISIONAL SPECIFICATION left by the said John Dodge and
Thomas Edghill Coles at the Office of the Commissioners of Patents,
with their Petition, on the 31st March 1874.
We, JOHN DODGE, of Garden Row, London Road, in the County of
Surrey, Engineer, and THомAS. EDGHILL COLES, of Vulcan. Wharf, Earl
Strect, Blackfriars, in the City of London, Color Manufacturer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
FURNACE BARS, AND IN THE MODE OF MOUNTING OR SETTING FURNACE BARS," to
follows
be as
.
The Invention embraces the constructing furnace bars with inclined
teeth or projections on the sides of the bars, so as to leave or constitute
:

page_text: between the teeth or projections a series of spaces or passages for air, the
inclination being from the under side upwards and forwards towards the
fuel lying upon the bars. Also the constructing, mounting, and setting
furnace bars, whether with or without teeth and air passages at the sides
or otherwise, so as to permit and obtain a rocking or alternate turning
motion of the bars on their longitudinal axis.
In performing the Invention the bars with the inclined teeth and air
passages are so cast and so placed or disposed that the teeth on one bar
may be opposite to or against the air passages of the adjoining bar.
Each bar lies on its own bearings in a square frame, and when by rocking
it is reversed on the angle the top of its teeth nearly come in contact
with the bottom of the teeth of the adjoining bar, cach bar consc-
quently acting so as to prevent or assist in preventing the formation of
clinkers.
For the rocking motion a wrought-iron frame traverses in alternato
directions on iron brackets with rollers, and engages with or acts upon
the tails or lower edges of the bars so as to tilt or turn them in their
bearings. The traverse of this frame being effected by a crank or in any
otlier convenient manner.
The Invention is applicable to the furnaces of both horizontal and
vertical bailors
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Dodge and Thomas Edghill Coles in the
Great Seal Patent Office on the 30th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
DODGE, of Garden Road, London Road, Engineer, and THOMAS EDGHILL
COLES, of Loughborough Road, Brixton, Color Manufacturer, both in
the County of Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of March, in the a
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did for Herself, Her heirs and suc-
cessors, give and grant unto us, the said John Dodge and Thomas
Edghill Coles, Her special licence that we, the said John Dodge and

page_text: Thomas Edghill Coles, our executors, administrators, and assigns, or
such others as we, the said John Dodge and Thomas Edghill Coles, 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 "IM-
PROVEMENTS IN FURNACE BARS, AND IN THE MODE OF MOUNTING OR SETTING
FURNACE BARS," upon the condition (amongst others) that we, the said
John Dodge and Thomas Edghill Coles, our exccutors or administrators,
by an instrument in writing under our, 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 immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said John Dodge and Thomas Edghill
Coles do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, that is to say:-
The Invention consists in constructing furnace bars with inclined
teeth, scrrations, or projections on the sides of the bars, so as to leave or
constitute between the teeth, serrations, or projections a series of spaces
or passages for air, the inclination being from the under side forwards
and upwards towards the fuel lying upon the bars. Also in so con-
structing, mounting, and setting such furnace bars as to permit and
obtain a rocking or alternate turning motion of the bars upon their
longitudinal axes.
+
In performing the Invention it is intended that the bars with the
inclined teeth and air passages should be cast, and so placed or disposed
that the teeth, serrations, or projections of one bar may lic opposite to
or against the air passages of the adjoining bar, cach bar lying in its
own bearings, and the several bars-being so rocked or turned that when
(fully) tilted on the angle the tops of the teeth, serrations, or projections
of one bar may nearly come in contact with the bottoms of those of the
next adjoining bar, each moving bar consequently acting to prevent or
assist in preventing the formation of clinkers...

page_text: The means of producing the rocking motion is explained by the
accompanying Drawing and further remarks which also illustrate
generally the intended construction of the apparatus.
Figure 1 is a longitudinal vertical section of the flue of an ordinary
cylindrical steam boiler fitted with the present improvements; Figure 2,
a plan view; Figures 3 and 4, cross sections.
a is the ordinary flue; b, b, b, b, cross frames or bearers for tho
improved furnace bars c, cx, c². In these e denotes the body or belly;
ex, cx, the tooth, serrations, or projections on both sides, and c³, c², the
ends, which last are on their under sides rounded or curved, and lie in
correspondingly shaped seats prepared for them in the bearers & so as to
permit of their rocking therein. The inclination of the teeth, serrations,
or projections cx, cx, and consequently of the air passages between them,
is specially to be noted, the current being from the front Z towards the
back of the boiler.
No dead or hearth plate is represented in the Drawing, but such plate
may be adapted to receive and support the nearer ends of one nest or set
of furnace bars instead of one of the bearers 6, or the bearer may be
adapted to support the plate. e, e, are a pair of bearings fixed to the
under sido of two of the bearers 6 for supporting a shaft f, shewn as the
'means of moving the bars, and which may be rocked or turned in
alternate directions by a hand lever or mechanically; 9, g, two toothed
sector wheels or pinions on the shaft f, one to each of the two sets of
furnace bars represented; h, h, agitators (driven by the pinions) being
moveable castings or pieces prepared for and resting upon and supported
by bracket rollers i, i, which are themselves fixed to the sides of the side
bars, thereby avoiding the necessity for drilling any holes in the fluc.
Each agitator has teeth on the under side engaging with those of its
pinion g, and nicks or grooves at intervals crossways on the upper side,
within which lie the tails or lower edges or bellies c of the furnace bars,
but without disturbing the proper bearings of the ends o² in their seats
the frames b. The to-and-fro motion given to the agitators consc-
quently effects the rocking or turning of the bars.
upon
The Figure 4 shews the extreme angle of turning or tilting in onc
direction, and corresponding position of the working or moving parts.
It is evident that by this movement in opposite directions alternately,
and in consequence of the inclined teeth, serrations, or projections of

page_text: the bars lying within or opposite to the spaces between those of the
adjacent bars the several bars will act as pokers and crushers to cach
other, and will bring down the cinders which otherwise would become
clinkers and which can be burnt again.
It is to be understood that the rocking motion of the improved furnace
bars may also be effected by a crank action, or in any convenient manner
other than that herein described and represented in the Drawing. Also
that the apparatus may be made of varying dimensions according to
those of the boiler to which it is to be fitted and other circumstances,
but as an approximate guide to proportions the Drawing may be read as
made to a scale of about one-eighth of the actual lineal dimensions.
The several furnace bars are made alike and interchangeable excepting
the outside furnace bars, which have teeth, serrations, or projections on
one side only, and do not rock, tilt, or turn like the others.
The Invention is applicable to the furnaces of vertical boilers as well
as to those of horizontal boilers,
In witness whereof, I, the said Thomas Edghill Coles, have here-
unto set my hand and seal, this Twenty-ninth day of September,
in the year of our Lord One thousand eight hundred and seventy-
four.

page_text: the Matter of Letters Patent granted to JOHN DODGE, of
Garden Row, London Road, in the County of Surrey, Engineer,
and THOMAS EDGHILL COLES, of Vulcan Wharf, 'Earl Street,
Blackfriars, in the City of London, Colour Manufacturer, for the
Invention of " IMPROVEMENTS IN FURNACE BARS, AND IN THE MODE
OF MOUNTING OR SETTING FURNACE BARS," dated the 31st March,
1874, No. 1122, which Letters Patent have been assigned to and
are now vested in us CHARLES MARTIN STOER and THOMAS
EDGHILL COLES, trading as Stoer Brothers, of Vulcan Wharf,
Blackfriars, in the City of London, Colour Merchants.

page_text: and claiming methods of giving a rocking or tilting motion to furnace
bars which were publicly known and used at the date of the application
for said Letters Patent. Therefore we are desirous of amending and do
amend the said Specification by limiting the Invention to the apparatus
Invented and intended to be claimed by the Patentees in the manner
herein-after set forth.. And referring to the Queen's Printers' copy of
the said Specification published at the Great Seal Patent Office in 1874
in page 3 and line 25 we strike out the word "also" and insert in its
place the word "and" after the word "
and we strike out the
word "constructing," which ends the same line, and commences the
following line. And in line 28 after the word " axes we add the
words "in the manner herein-after described." And in page 5 after the
word "boilers" at the end of the 16th line we add the following words :—
" We are aware that it has already been proposed to use furnace bars
bars;
"
"
And in order that the effect of the proposed Disclaimer and Memo- :
randum of Alteration may be clearly understood we annex a copy of
the Specification as it will appear after the said Disclaimer and Memo-
randum of Alteration have been made, omitting the introductory and
.concluding clauses of the said Specification.
"NOW KNOW YE, that we, the said John Dodge and Thomas Edghill
Coles, do hereby declare the nature of our said Invention and in what
manner the same is to be performed to be particularly described and
`ascertained in and by the following statement, that is to say :-
The Invention consists in constructing furnace bars with inclined
teeth, serrations, or projections on the sides of the bars so as to leave
or constitute between the teeth, serrations, or projections a series of
spaces or passages for air, the inclination being from the under side
forwards and upwards towards the fuel lying upon the.bars, and in so
mounting and setting such furnace bars as to permit and obtain a rocking
or alternate turning motion of the bars upon their longitudinal axes, in a
the manner herein-after described.

page_text: In performing the Invention it is intended that the bars with the
inclined teeth and air passages should be cast "and so placed or disposed
that the teeth, serrations, or projections of one bar may lie opposite to or
against the air passages of the adjoining bar, each bar lying in its own
bearings, and the several bars being so rocked or turned that when
(fully) tilted on the angle the tops of the teeth, serrations, or projections
of one bar may nearly come in contact with the bottoms of those of the
next adjoining bar, each moving bar consequently acting to prevent or
assist in preventing the formation of clinkers.
The means of producing the rocking motion is explained by the
accompanying Drawing, and further remarks which also illustrato
generally the intended construction of the apparatus.
Figure 1 is a longitudinal vertical section of the flue of an ordinary
cylindrical steam boiler fitted with the present improvements; Figure 2,
a plan view; Figures 3 and 4, cross sections.
a is the ordinary flue; b, b, b, b, cross frames or bearers for the
improved furnace bars c, c*; c². In these c denotes the body or belly;
c*, c*, the teeth, serrations, or projections on both sides; and c³, c², the
ends, which last are on their under sides rounded or curved and lie in
correspondingly shaped seats prepared for them in the bearers b so as to
permit of their rocking therein. The inclination of the teeth, serrations,
or projections c*, c*, and consequently of the air passages between them,
is specially to be noted, the current being from the front Z towards the,
back of the boiler.
No dead or hearth plate is represented in the Drawing, but such plate
may be adapted to receive and support the nearer ends of one nest or
set of furnace bars instead of one of the bearers 6; or the bearer may
be adapted to support the plate. e, e, are a pair of bearings fixed to the
two of
A
under side of the bearers 6 for supporting a shaft f, shewn as the means
of moving the bars, and which may be rocked or turned in alternate
directions by a hand lever or mechanically;, g, g, two toothed sector
wheels or pinions on the shaft f, one to each of the two sets of furnace
bars represented; h, h, agitators (driven by the pinions), being moveable
castings or pieces prepared for and resting upon and supported by
bracket rollers i, i, which are themselves fixed to the sides of the side
.bars, thereby avoiding the necessity for drilling any holes in the flue.
Each agitator has-teeth on the under side engaging with those of its

page_text: pinion 9, and nicks or grooves at intervals cross ways on the upper side,
within which lie the tails or lower edges or bellies c of the furnace bars,
but without disturbing the proper bearings of the ends c³ in their seats
upon the frames b. The to-and-fro motion given to the agitators con-
sequently effects the rocking or turning of the bars.
The Figure 4 shews the extreme angle of turning or tilting in one
direction and corresponding position of the working or moving parts.
It is evident that by this movement in opposite directions alternately,
and in consequence of the inclined teeth, serrations, or projections of the
bars lying within or opposite to the spaces between those of the adjacent
bars, the several bars will act as pokers and crushers to each other, and
will bring down the cinders, which otherwise would become clinkers,
and which can be burnt again.
It is to be understood that the rocking motion of the improved furnace
bars may also be effected by.a crank action or in any convenient manner
other than that herein described and represented in the Drawing. Also
that the apparatus may be made of varying dimensions, according to
those of the boiler to which it is to be fitted, and other circumstances,
but as an approximate guide to proportions the Drawing may be read
as made to a scale of about one-eighth of the actual lineal dimensions.
The several furnace bars are made alike and interchangeable, excepting
the outside furnace bars, which have teeth, serrations, or projections on
one side only, and do not rock, tilt, or turn like the others.
The Invention is applicable to the furnaces of vertical boilers as well
as to those of horizontal boilers.
We are aware that it has already been proposed to use furnace bars
rocked, tilted, or turned upon their longitudinal axis, and we wish it
understood that we do not claim the rocking, tilting, or turning motion
generally, or otherwise than when applied to furnace bars constructed
substantially in the manner and for the purpose herein-before described."
In witness whereof, we, the said Charles Martin Stoer and Thomas
Edghill Coles, have hereunto set our hands and scals, this
Fifteenth day of October, in the year of our Lord One thousand
eight hundred and seventy-five.
CITA DITS
SMAT
THOMAS EDGHILL COLES. (L.S.)
(•OUT)
TT
CATATXITA

page_text: To the Commissioners of Patents for Inventions.
I hereby grant my fiat, giving leave to the above-named Charles
Martin Stoer and Thomas Edghill Coles, trading as Stoer Brothers, of
Vulcan Wharf, Blackfriars, in the City of London, Colour Merchants,
Assignees of the Patent granted to John Dodge, of Garden Row, London
Road, in the County of Surrey, Engineer, and Thomas Edghill Coles, of
Vulcan Wharf, Earl Street, Blackfriars, in the City of London, Colour
Manufacturer, to file in the Great Seal Patent Office, with the Speci-
fication to which the same relates, the above-written Disclaimer and
Memorandum of Alteration.
Dated this 16th day of November 1875.
JOHN HOLKER,
Solicitor-General.