IMPROVE- MENTS IN STEAM BOILERS
Year: 1853

page_text: LETTERS PATENT to Joseph Barrans, of Peckham Lane, Deptford,
in the County of Surrey, Engineer, for the Invention of "IMPROVE-
MENTS IN STEAM BOILERS."
Sealed the 15th September 1853, and dated the 26th July 1858.
PROVISIONAL SPECIFICATION left by the said Joseph Barrans at
the Office of the Commissioners of Patents, with his Petition, on
the 26th July 1858.
I, JOSEPH BARRANS, of Peckham Lane, Deptford, in the County of
Surrey, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN STEAM BOILERS" to be as follows:--
This Invention has for its object improvements in what are called
Cornish boilers, or that class of boilers where the fires and flues are
within the boilers, and consists of applying to such a boiler a cylinder
or chamber (or more than one) to contain water within the flue which
passes through the boiler, leaving space all round such vessel for a Hue.
This introduced vessel has a series of tubes through it to encrease the
heating surface of the boiler, and there are water passages from and to
the introduced vessel in order that the water may flow freely from the
boiler to the introduced vessel, and from that vessel to the boiler; and,

page_text: combined with the use of such an introduced vessel, I prefer to employ
at the upper part of the flue inverted cups, such as are described in
the Specification of a former Patent granted to me for extending the
hooting surfaces of boilors.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Barrans in the Great Seal Patent Office,
on the 26th January 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME. 1.
JOSEPHI BARRANS, of Peckham Lane, Deptford. in the County of Surrey.
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of July, in the
year of our Lord One thousand eight hundred and fifty-three, in the
seventeenth year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Joseph Barrans, Her special
licence that I, the said Joseph Barrans, my executors, administrators,
and assigns, or such others as I, the said Joseph Barrans, my exe-
cutors, 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
STEAM BOILERS," upon the condition (amongst others) that I, the said
Joseph Barrans, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 T, the said Joseph Barrans, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained.
in and by the following statement thereof (that is to say):
This Invention has for its object improvements in-what-are-called.

page_text: Cornish boilers, or that class of boilers, where the fires; and flues are
within the boilers, and consists of applying to such a boiler, a cylinder
or, chamber: (or more than one) to contain water, within the flue
which passes through the boiler, leaving space all round, such vessel
for a flue. This introduced vessel has a series of tubes through it-to
cucrease the heating surface of the boiler, and there are water passagès
from and to the introduced vessel in order that the water may flow
freely from the boiler to the introduced vessel, and from that vessel to
the boiler; and, combined with the use of such an introduced vessel; I
prefer to employ at the upper part of the flue.inverted cups, such as
are described in the Specification of a former Patent granted to me for
extending the heating surfaces of boilers.
Having thus stated the nature of my Invention, I will proceed to
describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
::
:
Figure 1, shows a longitudinal section of a steam boiler having .my
improvements applied thereto; Figure 2, is a transverse section of the
saine; and Figure 3, a front view of the boiler. The construction of
boiler shown is of the Cornish kind, and on the interior of flue there
are introduced two cylinders or chambers. The number, however, of
such introduced chambers may be varied according to the judgement.
of the engineer (so long as the mode of constructing and applying
them is retained). A, is the furnace; B, the ash pit; C, a tube for
introducing air at the back of the bridge, such tube having a cover to
regulate the supply of air; D, D, is the large tubular flue through the
boiler.
I would state that the boiler may be varied in its forni, and the
boiler itself, when apparatus according to my Invention is not applied
thereto, is not of my Invention. E, E, are two water chambers or
cylinders with closed ends, having through them numerous tubular
flues e, e. These water chambers or cylinders E, E, are sustained in
the chamber of the flue D, D, by junction pipes e¹, e', below, and other
junction pipes e, e, above, by which the water space of the boiler and
the water spaces of the cylinders or chambers E, E, are open to each

page_text: other, and so that the water from the boiler may flow to the cylinders
or chambers E, E, and from them to the boiler; and it will be under-
stood that the water in the boiler will be heated as heretofore by the
heat internal of the tubular flue D, and externally by flues made in the
setting of the boiler; at the same time the water in the cylinders or
chambers E, E, will be heated externally by the heat in the chamber of
the flue D, and internally by the heat passing through the tubular
fluese, e, in the chambers or cylinders E, E. I prefer, in using the
apparatus above described, also to employ systems of inverted cups G, G,
such as were described by me in the Specification of a former Patent,
but these may be dispensed with. if desired. I have not thought it
necessary to show other supports or connections for sustaining the
vessels E, E, in their places, but they will be used when necessary.
Having thus described the nature of my Invention, and the manner
of performing the same, would bave it understood that I do not
confine myself to the form of the chambers E, E, nor to the number
thereof shewn, nor to the number of tubular flues shown thereto, as
these may be varied. But what I claim is, the applying appa-
ratus E, E, e, e', e, within the flue of a steam boiler in such manner
that the water in the boiler may circulate into and from the chambers
or cylinders E, E, and be heated, as herein described.
In witness whereof, I, the said Joseph Barrans, have hereunto
set my hand and seal, this Twenty-fifth day of January, in the
year of our Lord One thousand eight hundred and fifty-four.
Witness,
GEO. PITT,
4, Old Square.
JOSEPH BARRANS. (.s.)