IMPROVEMENTS IN FURNACES, APPLICABLE IN PART TO OTHER PURPOSES
Year: 1879

page_text: LETTERS PATENT to Richard William Starkey, of 31, Crutched Friars, in
the City of London, for the Invention of "IMPROVEMENTS IN FURNACES,
APPLICABLE IN PART TO OTHER PURPOSES."
ealed the 22nd July 1879, and dated the 12th May 1879.
PROVISIONAL SPECIFICATION left by the said Richard William Starkey
at the Office of the Commissioners of Patents on the 12th May 1879.
RICHARD WILLIAM STARKEY, of 31, Crutched Friars, in the City of London.
"IMPROVEMENTS IN FURNACES, APPLICABLE IN PART TO OTHER PURPOSES."
My Invention has reference to furnaces in which hollow fire bars are used in
conjunction with a blast to promote the combustion of fuel, and my improvements
relate to the construction of the bars and of the blast apparatus, and will be readily
understood by the aid of the accompanying Drawings, which illustrate by way
of example a manner in which apparatus according to my Invention may be
constructed.
Fig. 1 shews in front elevation a steam boiler with my said Invention applied
to it.
Fig. 2 is a longitudinal section through the furnace end, and Fig. 3 is a corresponding
sectional plan of the same.
Fig. 4 is a sectional view to a larger scale shewing one of my improved hollow
fire bars with my blower or blast apparatus as hereinafter described.
Fig. 5 shews in plan parts of a number of my improved hollow fire bars with
their corresponding blowers or blast apparatus.
My improved hollow fire bars are constructed each in two separate parts a, a¹, of
any suitable material, preferring rolled or wrought iron for the lower portion a,
and cast or wrought iron for the upper part a¹. By this construction the top a¹ of
These
the bar may at any time be renewed without affecting the lower portion a.
fire bars are perforated; different arrangements of perforations are shewn at a², a³,
but I do not limit myself to those arrangements. Each bar is provided internally
with wind stops or draught regulators 6 arranged at intervals in order that the
draught may be distributed over the furnace as desired.
I also provide at the end or bottom of the fire bar a port or ports c having a lid,
slide, or valve c' which by means of a draw bar c² or other suitable arrangement
under the control of an attendant may at any time be opened so that any dust or
ashes accumulated within the hollow fire bar may by means of the blower be blown
through the said port or ports c. I do not bind myself as to the manner of fixing
D. 1021

page_text: or arranging the hollow fire bar A; I may either place it, as shewn, in a hollow
dead plate A' or in any other convenient manner as circumstances may require.
My improved blowers or blast apparatus B are composed each of two hollow
truncated cones or nozzels connected by a helical or coned spiral part, substantially
as shewn, through which a jet of steam, air, or gas is projected so as to force or
induce currents of air into the furnace, thereby creating a blast and assisting the
combustion of the fuel, at the same time keeping the fire bars cool.
Fig. 6 shews, flattened out, a metal plate of suitable shape to form when rolled
up a blower such as illustrated. The part B' forms the first or rearward hollow
truncated cone, the part B2, the second or front hollow truncated cone, and the
part B³ the intermediate helical or coned spiral connecting part. B are the flanges
by which the blowers are affixed to their supports; b are the holes through which
the bolts or rivets for that purpose are inserted.
But my improved blowers may be cast.
d, d, are nozzles through which jets of steam are introduced into the mouth of
each blower through which such steam is forced.
D, D', are pipes supplying steam to the blowers. I do not confine myself solely
to the use of steam as the motive agent in my improved blowers; compressed air
or other gases, either separately or combined, may be used.
I may use a door or damper d', Fig. 1, but this is not in all cases necessary.
As it is obvious my improved blowers inay be employed for various purposes and
in various situations to produce blast or induce currents of air or gases.
In some cases I may use a series of truncated cones, or even only one truncated
cone instead of my improved blowers, in the same position and for the same purpose
as my improved blowers are shown in the Drawings B, Figs. 1, 2, 3, 4, 5.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard William Starkey in the Great Seal Patent Office on the
12th November 1879.
"
RICHARD WILLIAM STARKEY, of 31, Crutched Friars, in the City of London.
"IMPROVEMENTS IN FURNACES, APPLICABLE IN PART TO OTHER PURPOSES."
My Invention has reference to furnaces in which hollow fire bars are used in
conjunction with a blast to promote the combustion of fuel, and my improvements
relate to the construction of the bars and of the blast apparatus, and will be readily
understood by the aid of the accompanying Drawings, which illustrate by way
of example a manner in which apparatus according to my Invention may be
constructed.
Fig. 1 shows in front elevation a steam boiler with my said Invention applied
to it.
Fig. 2 is a longitudinal section through the furnace end, and Fig. 3 is a corresponding
sectional plan of the same.
Fig. 4 is a sectional view to a larger scale shewing one of my improved hollow
fire bars with my blower or blast apparatus as hereinafter described.
Fig. 5 shows in plan parts of a number of my improved hollow fire bars with
their corresponding blowers or blast apparatus.
Fig: 6 (Sheet 2) shews in elevation, and Fig. 7 in section one of my improved
blowers.
Fig. 8 shows, flattened out, a metal plate of suitable shape to form when rolled
up a blower, such as illustrated in Figs. 6 and 7.
My improved hollow fire bars are constructed each in two separate parts a, a', of
suitable material such as rolled or wrought iron for the lower portion a, and cast
or wrought iron for the upper part a. By this construction the top a¹ of the bar
may at any time be renewed without affecting the lower portion a. These fire bars
are perforated; different arrangements of perforations are shewn at a², a², but I do
not limit myself to those arrangements. Each bar is provided internally with wind
stops or draught regulators b arranged at intervals in order that the draught may
be distributed over the furnace as desired.
I also provide at the end or bottom of the perforated fire bar a port or ports c
having a lid slide or valve c' which by means of a draw bar c or other suitable
arrangement under the control of an attendant may at any time be opened so that
any dust or ashes accumulated within the hollow fire bar may by means of the
blower be blown through the said port or ports c. I do not bind myself as to the
manner of fixing or arranging the hollow fire bars; I may either place them, as
shewn, in a hollow dead plate A¹ (Fig. 4) or in any other convenient manner, as
circumstances may require.
My improved blowers or blast apparatus illustrated clearly in Figs. 6 and 7, and
lettered B in other Figures, are composed each of two hollow truncated cones or
nozzles connected by a helical or coned spiral part, substantially as shewn, through
which a jet of steam, air, or gas is projected so as to force or induce currents of air
into the furnace, thereby creating a blast and assisting the combustion of the fuel, at
the same time keeping the fire bars cool.
Referring to Fig. 8, the part B1 of the plate therein illustrated is that intended
to form the first hollow truncated cone (lettered B' in Figs. 6 and 7), the part B²,
the second or front hollow truncated cone (lettered B in Figs. 6 and 7), and the
part B³ the intermediate helical or coned spiral part (lettered B³ in Figs. 6 and 7)
which however may be made with more or less turns than shewn to suit requirement.
B' are the flanges by which the blower is affixed to its supports; b' are the holes
through which the bolts or rivets for that purpose are inserted.
My improved blowers may be cast instead of being formed of inetallic plates as
described.

page_text: d, d, are nozzles through which jets of steam in this instance are introduced
into the rearward truncated cone of each blower through which such steam is
forced.
D, D¹, are pipes supplying steam to the blowers; d² is a pet cock to allow of the
escape of condensed steam when necessary. I do not confine myself solely to the
use of steam as the motive agent in my improved blowers; I may use compressed
air or other gases either separately or in combination of two or more with steam or
without steam. I may use a door or damper d' (Fig. 1), but this is not in all cases
necessary.
As is obvious my improved blowers may be employed for various purposes and in
various situations to produce a blast or induce currents of air or gases.
In some cases I may use in conjunction with each hollow fire bar constructed as
described and shewn a series of truncated cones, or it may be a single truncated
cone, instead of my improved blowers, such truncated cones to be placed in the
same position and for the same purpose as hereinbefore described and shewn in the
Drawings at B, Figs. 1, 2, 3, 4, 5, with reference to my improved blowers.
Having described the nature of my said Invention, and explained in what
manner the same is to be or may be performed or carried into practical effect,
I hereby declare that I do not claim 'generally the use of blowers or blast
apparatus in conjunction with hollow perforated bars, but what I consider to be
novel and original, and therefore claim as secured to me under the Letters Patent
herein before in part recited is,
1. The constructing hollow fire bars, substantially as hereinbefore described &
shewn.
2. The combining wind stops or regulators with hollow perforated fire bars,
substantially as hereinbefore described.
3. A hollow perforated fire bar having in its end or bottom an opening or
openings provided with a valve or valves, or lid or lids, having a draw bar or lever
or other mechanical arrangement for opening and closing the same, substantially as
described and shewn.
4. The constructing blowers or blast apparatus, substantially as herein before
described with reference to Figs. 6 and 7, whether such blowers or blast apparatus
be wrought or cast.
5. The combination of hollow fire bars with blast apparatus, the whole constructed,
arranged, and operating substantially as shewn in and described with reference to
Figs. 1, 2, and 3 of the Drawings.
6. The combining with a hollow fire bar, as described, a blower or blast apparatus
consisting of a hollow truncated cone or series of hollow truncated cones arranged
in relation to such hollow bar exactly in the same position as my spiral blower is
shewn in Figs. 1, 2, 3, 4, 5, lettered B.
In witness whereof, I, the said Richard William Starkey, have hereunto set
my hand and seal, this Fifth day of November, in the year of our Lord
One thousand eight hundred and seventy nine.
RICH³. W. STARKEY. (L.S.)