IMPROVEMENTS APPLICABLE TO FURNACE BARS AND FIRE-GRATES
Year: 1865

page_text: LETTERS PATENT to Samuel Godfrey, of Middlesborough-on-Tees, in the
County of York, Engineer, for the Invention of "IMPROVEMENTS APPLICABLE
TO FURNACE BARS AND FIRE-GRATES."
PROVISIONAL SPECIFICATION left by the said Samuel Godfrey at the
Office of the Commissioners of Patents, with his Petition, on the
22nd June 1865.
I, SAMUEL GODFREY, of Middlesborough-on-Tees, in the County of York,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS APPLICABLE TO FURNACE BARS AND FIRE-GRATES," to be as follows:—
This Invention consists in constructing fire-bars moveable or fixed; the
fire surface of each thereof (which is grooved) being a right line or proxi-
mately right line. These bars are provided with a number of wings (also having
the same right line fire surface), for instance, as thus
bedef
H
(a, b, c, d, e, f,) being the wings), also grooved on the said right line; fire
surface, but otherwise of a curved form, with notches near the angles made
by the junctions of the right lines with the curved lines for the purpose of
gripping the clinker, and bringing the same through the bars.
when in position in the grate, are. interposed between one
.
The wings,
another, for

page_text: larger area of air space than can
by
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used, consequently I effect more complete combustion of the fuel and
secure the prevention of the collection of slag, clinker, or the fouling of
the bars by giving rotative or rocking motion to the bars (as hereafter
described), thereby effecting a considerable saving in the consumption of fuel,
and greatly diminishing the labour of the fireman. For the side bars I
should use rocking bars, with wings of an angular form as regards the fire
surface, so that one part may be part of the bottom of the grate, and the
other part be part of the side of grate, with curved lines connecting the
two extremities of the angle lines. The bars can be placed either longi-
tudinally or transversely in the furnace, and are applicable to all descriptions
of reverberatory furnaces as well as boiler furnaces, whether marine,
stationary, or locomotive. The moveable fire-bars can be placed vertically at
the front, back, and sides of the furnace or grate. For the side bars I also
use a fixed bar similarly winged.
In order to the efficient action of my improvements I use gearing for com-
municating motion to the bars, which gearing may consist of a connecting
link from the journal at the end of each fire-bar, connecting the same with
the motive bar or lever common to the whole system of motive bars, by
which means rotative, or semi-rotative, or rocking motion may be commu-
nicated thereto; such motive bar or lever being actuated by a hand lever, or
connected with some convenient prime mover. A pendant weight or catch
should be added for the purpose of keeping the fire-bars level.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Godfrey in the Great Seal Patent Office on the
16th October 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
GODFREY, of Middlesborough-on-Tees, in the County of York, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of June, 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 me, the

page_text: said Samuel Godfrey, Her special licence that I, the said Samuel Godfrey, my
executors, administrators, and assigns, or such others as I, the said Samuel
Godfrey, 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
APPLICABLE TO FURNACE BARS AND FIRE-GRATES," upon the condition (amongst
others) that I, the said Samuel Godfrey, my executors or administrators, by an
instrument in writing under my, or their, or one of their bands 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 Samuel Godfrey, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This Invention consists in constructing fire-bars movable or fixed; the
fire surface of each of which is grooved, and forms a right line or proximate
right line. Further, these fire-bars have a number of wings with the same
right line and grooved fire surface, but otherwise each bar is of a curved form,
with notches near the angles made by the junctions of the right lines with the
curved lines for the purpose of gripping the clinkers and bringing the same
through the bars. The aforesaid wings, when the bars are in position in the
grate, are interposed between one another, as is hereafter fully described, and
as is exemplified by the Drawings accompanying this Specification..
By the use of my said Invention I obtain a larger area of air space than
can be obtained by the bars hitherto used; consequently I effect more complete
combustion of the fuel and prevent the accumulation of slag, clinker, or the
fouling of the bars, as they can have rotative or rocking motion given thereto,
as hereafter described, hereby effecting a considerable saving in the con-
sumption of fuel and diminution of the labour of the fireman. For the side
bars I should use rocking bars, with wings angularly formed as regards the
fire surface, so that one part may be part of the bottom of the grate, and the
other part be part of the side of the grate, with curved lines connecting the
two extremities of the angle lines.
The bars constructed according to my Invention can be placed either longi-
tudinally, or transversely in the furnace, and are applicable to reverberating

page_text: furnaces as well as boiler furnaces, whether marine, stationary, or locomotive.
Moreover the moveable fire-bars can be disposed vertically at the front, the
back, and the sides of the furnace or grate, or such my bars may be fitted in'
any other convenient manner or position. Also for the side bars I can use
fixed bars similarly winged, as hereafter described and exemplified. In order
to efficiently afford rotative or rocking motion to the bars I use for commu-
nicating such motion gearing hereafter described with reference to the
accompanying Drawings.
Having thus described the nature, objects, and purposes of my said
Invention, I now, in further compliance with the aforesaid condition in the
said Letters Patent contained, proceed to describe in what manner the same
is to be performed or put in practice by reference to the accompanying
Drawings, as hereafter followeth, that is to say:-
DESCRIPTION OF THE DRAWINGS.
Fig. 1 shews a front elevation and transverse section through the line A, B,
(at Fig. 2) of fire grate and furnace; Fig. 2, a sectional elevation; Fig. 3,
plan of grate and frame; Fig. 4, longitudinal section of frame, shewing bars
in position; Fig. 5, section through Fig. 6 at C, D; Fig. 6, view of bar in
elevation; Fig. 7, end view of bar, shewing crank or lever; Fig. 8, plan of
two bars shewn in position; Figs. 9 and 10, front elevations, shewing bars in
opposite working positions; Fig. 11, coupling link for connecting the bars to:
each other by means of cranks or levers;. Figs.-12, 18, and 14, are end views
of bar on enlarged scale, shewing the respective positions of the journals,
which are varied according to desire; Fig. 15 shews movable side bar and
fixed side bar D3, as intended to be placed in the furnace; Fig. 16 is a con-
necting link connecting the socket lever (as shewn in Figs. 17, 18, and 19).
to the coupling link by means of the double eye, Figs. 20 and 21.
The letters a, a, a, at Fig. 3, denote lugs for securing the dead plate to the
front bar; b, b, b, at Fig. 9, shew the cranks or levers for connecting the bars
to each other by the coupling link 6* (shewn separately in detail at Fig. 11),
so that one shaft will serve for the communication of the rotative or rocking
motion to the whole system, as will be perceived upon inspection of the
Drawing.
A, B, C, at Figs. 12, 18, and 14, are the journals of the fire-bars, these
being situate at a different position at each of these Figures respectively. At
Fig. 3, the fixed side bars D2 placed in the frame of the movable side bar,
Fig. 15, shewing the form and combined arrangement of this movable side
bar, and also of the fixed bar D (shewn also in detached view, Fig. 4).. E, at-

page_text: any Figure where it appears, is placed on the main line of the bar, and F is
placed on the wings. The gearing which I prefer to adopt for the purpose
of communicating as desired the rocking or rotative motion to the system of
bars is shewn in the Drawings, Fig. 2 and Figs. 16, 17, 18, 19, 20, 21. It
consists of the aforesaid cranks or levers b at the end of each fire-bar, con-
necting the same with the aforesaid coupling link 6*, which is itself connected
with the shaft, motive bar, or lever common to the whole system of moving
bars, by which means rotative, or semi-rotative, or rocking motion may be
communicated thereto, such motive bar or lever being actuated by a hand
lever H fitting in a socket in the shaft (G), or connected by a similar lever to
some convenient prime mover. A pendant or counterbalance I is added, as
may be necessary, for keeping the fire-bars level or to assist in breaking the
clinker or any other hard substance which may have formed on the bar.
The particular arrangement of gearing shewn and described may, if desired,
be superseded by any other gearing that will effect the same objects, but I
prefer and recommend that shewn and described. The other points of con-
struction shewn in the Drawing indicate either other views of parts herein
specifically referred to or matters of ordinary construction, and need no special
mention.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I hereby
declare that I claim in respect thereof the improvements applicable to furnace
bars and to fire-grates comprised in the construction and arrangement of
winged fire-bars, as herein-before set forth.
In witness whereof, I, the said Samuel Godfrey, have hereunto set my
haud and seal, this Twenty-eighth day of September, in the year of
our Lord One thousand eight hundred and sixty-five.
Witness,
WILLIAM RUFUS RICHARDSON.
SAMUEL GODFREY. (L.S.)