IMPROVEMENTS IN AND CONNECTED WITH WATER FIRE-BARS."
Year: 1873

page_text: LETTERS PATENT to Leopold Lange, of Liverpool, in the County of
Lancaster, Merchant, for the Invention of "IMPROVEMENTS IN AND
CONNECTED WITH WATER FIRE-BARS."
PROVISIONAL SPECIFICATION left by the said Leopold Lange at the
Office of the Commissioners of Patents, with his Petition, on the
3rd November 1873.
I, LEOPOLD LANGE, of Liverpool, in the County of Lancaster,
Merchant, do hereby declare the nature of the said Invention for
IMPROVEMENTS IN AND CONNECTED WITH WATER FIRE-BARS," to be as
follows:-
-
The object of my Invention is to provide fire-bars and appliances
connected therewith whereby water in its passage to the boiler. shall
become highly heated, and also where through when the feed is shut
off the water contained in the boiler shall circulate and promote
generation of steam. Not only are these benefits secured, but the
fire-bars and appliances are also rendered durable, the formation of

page_text: clinker prevented, and the bars as a whole or separately are easily
renewed, repaired, and cleaned.
In carrying my Invention into practice I construct and arrange the
parts in manner following:-
First. As means for obtaining thorough circulation and uniform 5
heating of feed water, and also for promoting generation of steam
in the boiler when the feed is cut off, in forming each fire-bar of
two tubes, one inside the other, and causing the feed or boiler water
to flow from a chamber or compartment at the front of the fire-place
through the internal tubes into a chamber or passage in the bridge, 1
thence back through the annular spaces between the internal and
external tubes to a second chamber or compartment in front of the
fire-place. The tubes forming each fire-bar may be embedded in cast
iron or other material.
と
It will be obvious that the water-might be caused to flow first 1
through the annulus returning by the internal tube of each bar, and
that the double chamber might be at the bridge instead of at the
front of the fire-place, and the direction of the currents reversed without
departing from my Invention. The arrangement described herein is the
one which I prefer.
2
Instead of arranging the circulation tubes one within the other they
may be placed side by side, each tube encased or otherwise forming a
fire-bar. In this arrangement one end of each tube is in communication
with one chamber, whilst the other ends are either connected in pairs
by a bridge piece, or half to a second chamber and half to a third 2
chamber at the same end.
Second. As means for facilitating renewal and repairs I form each
bar with its own bridge piece; in this manner a water containing bridge
is built up of pieces. This facilitates the removal of one tube and sub-
stitution of another when necessary.
Third. As means for easy withdrawal, inspection, and cleaning of
the internal tubes in capping the water containing chambers opposite
each internal tube.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Leopold Lange in the Great Seal Patent Office
on the 2nd May 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LEOPOLD
LANGE, of Liverpool, in the County Lancaster, Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of November, in the year.
of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Leopold Lange, Her special
license that I, the said Leopold Lange, my executors, administrators,
and assigns, or such others as I, the said Leopold Lange, 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 IN AND CONNECTED WITH WATER FIRE-BARS," upon the con-
dition (amongst others) that I, the said Leopold Lange, 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 Leopold Lange, 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, reference being had to the accompanying Sheet
of illustrative Drawings, and to the figures and letters marked thereon,
that is to say:
-
The object of my Invention is to provide fire-bars and appliances
connected therewith whereby water in its passage to the boiler shall
become highly heated, and also where through when the feed is shut
off the water contained in the boiler shall circulate and promote

page_text: generation of steam. Not only are these benefits secured, but the
fire-bars and appliances are also rendered durable, the formation of
clinker prevented, and the bars as a whole or separately are easily
renewed, repaired, and cleaned.
In carrying my Invention into practice I construct and arrange the
parts in manner following:-
First. As means for obtaining thorough circulation and uniform
heating of feed water, and also for promoting generation of steam
in the boiler when the feed is cut off, in forming each fire-bar of
two tubes, one inside the other, and causing the feed or boiler water ]
to flow from a chamber or compartment at the front of the fire-place
through the internal tubes into a chamber or passage in the bridge,
thence back through the annular spaces between the internal and
external tubes to a second chamber or compartment in front of the
fire-place. The tubes forming each fire-bar may be embedded in cast 1
iron or other material.
It will be obvious that the water might be caused to flow first
through the annulus returning by the internal tube of each bar, and
that the double chamber might be at the bridge instead of at thế
front of the fire-place, and the direction of the currents reversed without
departing from my Invention. The arrangement described herein is the
one which I prefer.
Instead of arranging the circulation tubes one within the other they
may be placed side by side, each tube, encased or otherwise, forms a
fire-bar. In this arrangement one end of each tube is in communication
with one chamber, whilst the other ends are either connected in pairs
by a bridge piece, or half to a second chamber and half to a third
chamber at the same end.
Second. As means for facilitating renewal and repairs I form each
bar with its own bridge piece; in this manner a water containing bridge
is built up of pieces. This facilitates the removal of one tube and sub-
stitution of another when necessary.
Third. As means for easy withdrawal, inspection, and cleaning of
the internal tubes in capping the water containing chambers opposite
each internal tube.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a longitudinal section, and Fig. 2 a plan view of water.
tube fire-bars constructed in accordance with the first and third parts
of my Invention. Like letters denote the same parts. a is the external
tube embedded in cast iron to form a bar; 6 is the internal tube;
c, chamber or compartment into which the tube a opens; d, chamber
or compartment into which the tube 6 opens. The chambers or com-
partments c, d, run the whole breadth of the bars; c receives all the
external tubes, and d all the internal tubes. In the arrangement
shown water will be caused to circulate either from d along 6, back,
through a into c, or vice versa, according to the way in which the
chambers c and d are connected to the feed pump or boiler; e are caps
to allow access to the internal and external tubes.
Fig. 3 is a longitudinal section, and Fig. 4 a plan view of water
fire-bars constructed in accordance with the first, second, and third
parts of my Invention. a, external tube embedded in cast iron; b,.
internal tube; c, d, chambers or compartments; e, caps; f, water
bridge embedded in cast iron. In this arrangement each bar has its
own bridge. The water circulates from d along 6, around ƒ back through
a into c, or vice versa.
Fig. 5 is a longitudinal section, and Fig. 6 a plan view of water
tube fire-bars constructed in accordance with the first and third parts
of my Invention; here each tube 9, g³, forms a bar, and opens into
a chamber in front of the furnace. To induce circulation the bars
are placed alternately on a higher and lower level, and each pair of
bars is connected at the end by a bridge piece; i, cleaning caps.
Fig. 7 is a longitudinal section, and Fig. 8 a plan view of water
tube fire-bars constructed in accordance with the first, second, and
third parts of my Invention. k, front chamber; l, m, back chambers
forming a bridge; one end of each tube opens into k, the other end
alternately into / and m; circulation takes place from along the tube
bars n to k, from k along the tube bars n¹ to m. The tubes are embedded
in cast iron. If preferred the tubes might be used without embedding
in metal.
Having now described the nature of my said Invention, and particu-
larized the same in such manner that others will be enabled to carry my
imperaments into offent. I claim

page_text: First. Constructing water tube fire-bars with internal and external
circulation tubes, substantially as described under Figs. 1 and 2 for the
purposes set forth.
Second. Constructing water tube fire-bars with internal and external
circulation tubes, substantially as described under Figs. 3 and 4 for the
purposes set forth.
Third. Constructing water tube fire-bars, substantially as described
under Figs. 5 and 6 for the purposes set forth.
Fourth. Constructing water tube fire-bars, substantially as described
under Figs. 7 and 8 for the purposes set forth.
In witness whereof, I, the said Leopold Lange, have hereunto
set my hand and seal, the Thirtieth day of April, in the
year of our Lord One thousand eight hundred [and seventy-
four.
In the presence of
JAMES JOHNSON,
4, Clayton Square,
Liverpool.
LEOPOLD LANGE. (L.s.)