AN IMPROVEMENT IN CONSTRUCTING THE FIRE BOXES OF STEAM BOILERS
Year: 1854

page_text: LETTERS PATENT to James Rose, of Ashford Station, South Eastern Rail-
way, Kent, for the Invention of "AN IMPROVEMENT IN CONSTRUCTING THE
FIRE BOXES OF STEAM BOILERS."
Sealed the 23rd February 1855, and dated the 14th December 1854.
PROVISIONAL SPECIFICATION left by the said James Rose at the Office
of the Commissioners of Patents, with his Petition, on the 14th December
1854.
I, JAMES ROSE, of Ashford Station, South Eastern Railway, Kent, do hereby
declare the nature of the Invention for "AN IMPROVEMENT IN CONSTRUCTING THE
FIRE BOXES OF STEAM BOILERS " to be as follows:-
The object of this Invention is to construct the four sides and top of a fire
box in a peculiar manner, with a view to obtain more extensive heating
surfaces. Heretofore in the constructing of fire boxes of locomotive and other
steam boilers it has been usual to employ plain sheet metal, but some attempts
have been made to obtain greater heating surfaces by employing corrugated
sheet metal, the corrugations proceeding from the top to the bottom of the fire
boxes. Now, my improvement consists of forming a fire box of a steam boiler
with upright parallel protruding enlargements from the water spaces into the
fire box, the protruding enlargements of the water spaces being made with
inclined ends; and it is preferred that these enlargements should not protrude

page_text: in all cases equally into the fire box. The lower ends of these protruding
enlargements do not descend so low as to come to the fire bars, but are at a
distance above them, thus leaving the form of the fire box as heretofore, and
like protruding enlargements of the water space are made at the top of a
fire box.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Rose in the Great Seal Patent Office on the
14th June 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
ROSE, of Ashford Station, South Eastern Railway, Kent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of December, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year. of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
James Rose, Her special licence that I, the said James Rose, my executors,
administrators, and assigns, and such others as I, the said James Rose, 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 "AN IMPROVEMENT IN CONSTRUCTING THE FIRE BOXES OF
STEAM BOILERS," upon the condition (amongst others) that I, the said James
Rose, by an instrument in writing under my hand and seal, 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 James Rose, do hereby declare the
nature of the 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 thereof (that is to say):-
The object of this Invention is to construct the four sides and top of a fire
box in a peculiar manner, with a view to obtain more extensive heating
surfaces. Heretofore in the constructing of fire boxes of locomotive and other
steam boilers it has been usual to employ plain sheet metal, but some attempts
have been made to obtain greater heating surfaces by employing corrugated

page_text: sheet metal, the corrugations proceeding from the top to the bottom of the
fire boxes. Now, my improvement consists of forming a fire box of a steam
boiler with upright parallel protruding enlargements from the water spaces
into the fire box, the protruding enlargements of the water spaces being made
with inclined ends; and it is preferred that these enlargements should not
protrude in all cases equally into the fire box. The lower ends of these
protruding enlargements do not descend so low as to come to the fire bars,
but are at a distance above them, thus leaving the form of the fire box as
heretofore, and like protruding enlargements of the water space are made at
the top of a fire box.
4
Having thus stated the nature of my said Invention, I will proceed to
describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a plan of a fire box of a locomotive engine boiler; Figure 2
shows a front view thereof; and Figure 3 shows a vertical section, taken from
from to back at the line A, B, in Figure 2. a is the fire door in front; b is
the position of the fire bars; c is the back, where openings are to be made for,
and the tubular flues fixed, in the ordinary manner. The Drawings show
simply the fire box, which is within the outer casing. At the sides, front, and
top are formed hollow protruding enlargements for water spaces, in such
manner as to enlarge the heating surfaces within the fire box. In Figure 3,
d, d, are protruding water spaces, which, commencing at the top, descend
towards the fire bars, the dimensions somewhat decreasing as shown; and from
the points d' they reduce quickly, so as to come flush with the sides at d
before they come to the fire, which is on the fire bars; hence, the spaces e
between the protruding hollow water spaces may be said to act as so many
open vertical flues or recesses in the sides of the fire box.
In the arrange-
ment shown there are three deep protruding water spaces d, d, on each side,
and two similar front protruding water spaces f.f, and four protruding water
spaces g, g, at the top, but these numbers and their forms may be varied, so
long as they are made in such manner as to decrease and come to nothing
above the fire bars. It will be seen that there are stays h, h, across some of
the water spaces; these are only necessary when the water spaces are deep;
the more shallow ones do not require them. Figure 4 shows a side view, and
Figure 5 a transverse section, of a fire box for a marine or similar steam boiler,
in which there are several protruding water spaces d, which, commencing on
one side somewhat above the fire bars, expand in dimensions, pass up to the
top and over the fire bars, and then descend towards the fire bars on the other

page_text: side, decreasing in dimensions as they come towards the fire bars from the
points d¹ to d. By these arrangements of protruding water spaces great
increase of heating surfaces will be obtained in constructing fire boxes of steam
boilers. I would remark that fire boxes according to my Invention may be
made by riveting or connecting sheets of copper, or Muntz's metal, or other
suitable metal; or they may be each made in one casting of copper, or an
alloy of copper, particularly Muntz's metal.
Having thus described the nature of my said Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
making of fire boxes with upright protruding enlargements from the water
spaces into the fire boxes, as herein described.
In witness whereof, I, the said James Rose, have hereunto set my hand
and seal, this Eleventh day of June, in the year of our Lord One
thousand eight hundred and fifty-five.
TAMES DOST
TAMRO
ROSE. (..)