AN IMPROVEMENT OR IMPROVEMENTS IN THE CONSTRUCTION OF STEAM BOILERS OR GENERATORS
Year: 1853

page_text: LETTERS PATENT to Amédée François Rémond, of Birmingham,
in the County of Warwick, Gentleman, for the Invention of "AN
IMPROVEMENT OR IMPROVEMENTS IN THE CONSTRUCTION OF STEAM
BOILERS OR GENERATORS."
Sealed the 1st February 1854, and dated the 18th November 1853
PROVISIONAL SPECIFICATION left by the said Amédée François
Rémond at the Office of the Commissioners of Patents, with his
Petition, on the 18th November 1853.
I, AMEDEE FRANÇOIS RÉMOND, of Birmingham, in the County of
Warwick, Gentleman, do hereby declare the nature of the said Inven-
tion for "AN IMPROVEMENT OR IMPROVEMENTS IN THE CONSTRUCTION OF
STEAM BOILERS OR GENERATORS" to be as follows:-
My Invention consists in the use of corrugated plates or sheets of
metal in constructing steam boilers or generators, in place of plane
[Price 8d.]

page_text: sheets of metal and tubes commonly employed. I use the said corru-
gated plates in forming all those parts of the boiler which are exposed
to the fire or heated air and products of combustion, excepting where
from the deposit of sediment or otherwise it may be advisable not to
use the said corrugated plates. In place, of the tubes ordinarily in-
troduced into boilers I sometimes make passages for the flame and
heated air, by means of corrugated plates placed parallel to each other
By the use of corrugated plates I extend the heat absorbing surface of
the said boiler, and thus both economise fuel and space.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Amédée François Rémond in the Great Seal
Patent Office on the 17th May 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
AMÉDÉE FRANÇOIS REMOND, of Birmingham, in the County of Warwick,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of November, 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 suc-
cessors, give and grant unto me, the said Amédée François Rémond,
Her special licence that I, the said Amédée François Rémond, my
executors, administrators, and assigns, or such others as I, the said
Amédée François Rémond, 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 law-
fully.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 "AN IMPROVEMENT OR IMPROVEMENTS IN THE CONSTRUC
TION OF STEAM BOILERS OR GENERATORS," upon the condition (amongst
others) that I, the said Amédée François Rémond, by an instrument
in writing under my hand and seal, should particularly describe and

page_text: 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 Amédée François Rémond, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement thereof (that is to say):
My Invention consists in the use of corrugated plates or sheets of
metal in the construction of steam boilers or generators, the said plates
being so made and used that the corrugations shall be transverse to
the axis of the boiler, in place of the plain sheets of metal and tubes
commonly employed. I use the said corrugated plates in forming all
those parts of the boilers which are exposed to fire or heated air and
products of combustion, excepting where from the deposit of sediment
or otherwise it may be advisable not to use the said corrugated
plates.
Figure 1, represents in longitudinal section, and Figure 2, repre-
sents in transverse section, a boiler constructed according to my
Invention; the said boiler consists of two cylinders, the space between
which constitutes the interior of the boiler; the smaller cylinder a
constitutes the furnace or fire place of the said boiler; the smaller
cylinder or fire box a, is made of plates of corrugated metal, the
corrugations extending all round the same; the outer cylinder 6, is
made of corrugated plates, the corrugations of which may either
extend of uniform depth all round, or the depths of the said corruga-
tions may be greatest at the upper part of the cylinder b, and diminish
in depth in the sides of the boiler, and be altogether absent in the
bottom of the boiler. Both the methods of construction are illustrated
in Figures 1 and 2, where the continuous line 6' represents a boiler
having no corrugations at the bottom; and the dotted line crepresents
a boiler of which the corrugations are extended of uniform depth all
round. In the last-described boiler a plain sheet of metal c¹ is placed
at the bottom to receive the deposit, and prevent the same from col-
lecting in the corrugations.

page_text: The expansion of the boiler in the direction of its length is pre-
vented by stays d, d, Figures 1 and 2, which said stays may either be
rivetted to the top of the said corrugations or attached only to the
ends of the boiler. In order to prevent the accumulation of ashes in
the corrugations of the ash pit, a plain plate e is introduced into the
said ash pit for the purpose of receiving the said ashes. Figures 3
and 4, illustrate the methods of joining the corrugated plates of which
the boiler is made. The plates f, g, Figure 3, may be placed end to
end, and a plate h rivetted thereto; or the corrugated plates may
be joined as illustrated in Figure 4, that is to say, the ends of
the plates k, l, may overlap the ends of the plates i, m, and be
rivetted thereto as represented. Figure 5, represents in horizontal
section, and Figure 6, in vertical longitudinal section, and Figure 7,
in vertical transverse section, another form of boiler for marine pur-
poses constructed according to my Invention, in which the heated air
and products of combustion from the furnaces n, n, n, circulate in the
passage or flue in the manner illustrated in Figure 5; the sides
of the furnaces n, n, n, and the passage or flue o, are made of corru-
gated sheets of metal as represented. Figures 8, 9, and 10, represent
a marine or other boiler constructed according to my Invention
Figure 8, being a transverse vertical section; Figure 9, a longitudinal
vertical section, and Figure 10, a plan. I make the nearly elliptical
tubes or flues p, p, p, through which the flame and heated air pass, of
plates of corrugated metal (excepting at the bends of the same) rivetted
together in the manner illustrated on a larger scale in Figure 11.
By the use of corrugated plates in the construction of steam boilers I
increase the heat absorbing surfaces of the said boilers, and thus
economise both fuel and space.
Having now described the nature of my said Invention, and the
manner of carrying the same into effect, I wish it to be understood
that I do not limit myself to the precise methods herein described, as
the same may be varied without departing from the nature of my said
Invention; but I claim as my Invention the application of corrugated
plates of metal, or of plates of metal partially corrugated, in the
construction of steam boilers or generators, the said plates being sc

page_text: boiler as herein described.
In witness whereof, I, the said Amédée François Rémond, have
hereunto set my hand and seal, this Sixteenth day of May, in
the year of our Lord One thousand eight hundred and fifty-
four.
Witness,
GEORGE SHAW.
AMEDEE FRANÇOIS REMOND. (L.S.)