CERTAIN IMPROVEMENTS IN BOILERS FOR GENERATING STEAM
Year: 1851

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWIN
ROSE, of Manchester, in the County of Lancaster, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Third day of May, One
thousand eight hundred and fifty-one, in the fourteenth year of Her reign, did,
for Ierself, IIer heirs and successors, give and grant unto me, the said Edwin
Rose, my exors, adñiors, and assigns, Ifer especial licence, full power, sole
privilege and authority, that I, the said Edwin Rose, my exors, adñiors, and
assigns, or such others as I, the said Edwin Rose, my exors, adñiors, or assigns,
should at any time agree with, and no others, from time to time, and at all
times during the term of years therein expressed, should and lawfully might
make, use, exercise and vend, within England, Wales, and the Town of
Berwick upon Tweed, my Invention of "CERTAIN IMPROVEMENTS IN BOILERS
FOR GENERATING STEAM;" in which said Letters Patent is contained a proviso,
that I, the said Edwin Rose, shall cause a particular description of the nature
of my said Invention, and in what manner the same is to be performed, by
an instrument in writing under my hand and seal, to be inrolled in Her said.
Majesty's High Court of Chancery within six calendar months next and im-
mediately after the date of the said in part recited Letters Patent, as in and by
the same, reference being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Edwin Rose, do hereby declare that the nature of my Invention consists in

page_text: combining fire or smoke flues with a multitubular portion of boiler, having
a chamber between them, whether such parts are made altogether in one boiler
or any of the parts is made separately, and subsequently united with the others,
so as to act together with them, for the better combustion of smoke and
generation of steam. And in order that my Invention may be fully understood
and readily carried into effect, I will proceed to describe the means pursued
by me.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a transverse sectional elevation of one of my improved boilers
taken through the line A, B, on Figure 3; Figure 2 is a longitudinal section
of the same; Figure 3 is a plan view of the same, also in section; Figure 4
is another transverse sectional elevation of the same, taken through the
line C, D, on Figure 3; and Figure 5 an end elevation of the firing end of
the same boiler; Figure 6 is a transverse sectional elevation of another
of my improved boilers, taken through the line E, F, on Figure 7, which
is a longitudinal section of the same. Figure 8 is a transverse sectional
elevation of the same, taken through the line G, H, on Figure 7; and
Figure 9 is a plan view of the same. Figure 10 is a transverse sectional ele-
vation in part of another of my improved boilers, taken through the line I, J,
on Figure 11, which is a longitudinal section of the same; and Figure 12 is a
plan view of part of the same. In Figures 1, 2, 3, 4, and 5, a, a, is the
cylindrical shell of the boiler; is the end plate of the boiler at the firing end;
and c, the end plate, which forms a portion of the smoke box; these two end
plates are stayed by five or more rods c', or the end plates may be stayed by
gusset or angular stays; d, d, are two cylindrical flues containing the fire grates
c, c; the flues are attached at one end to the plate b, and at the other end to
the plate. is a plate forming the other end of the combustion chamber.
The roof and the lower part of the combustion chamber are stayed by the bars
f, which are similar to the stays over the fire box of a locomotive engine. The
bar f, placed in the centre of the under part of the combustion chamber serves
to support the weight of the same, and two of the upper stays f', are connected
to the shell of the boiler by the stays f, thereby combining the whole firmly
together. The plates and c are bored out to receive the ends of the tubes h,
which are secured into the said plates by ferules or by expanding the ends of
the tubes when in their places. i, i, are two stands, on which the boiler is
supported, and to which are attached the blow-off pipes j. is a smoke box,
formed by the outer plate 7, and the tube plate c; and m is a down flue attached
to the smoke box k, and furnished with a damper n, constructed on the same
principle as the throttle valve of steam engines; this damper is opened or
I

page_text: closed by means of the lever o, to which is hinged a rod p, connected at the
other cud to a lever o', on the spindle of the damper, and the lever o has a
shot bolt, taking into notches in the segment o², to retain the lever in its
required position, as clearly shewn in Figure 2. By this means the fireman
can regulate the damper, without leaving his place at the firing end of the
boiler. The man-hole s is placed beneath the two flues d, by means of which
the boiler can be cleared out when requisite. In working this boiler the fire-
man should take care that one of the fires is red when he puts fresh coals on
the other; 'by this means the smoke from the fire that. has last been supplied
with coal will become ignited in the smoke chamber by the current of heated
air from the other fire, thereby. effecting an increased combustion of the smoke.
By constructing boilers in the manner above described, a constant circulation
of water is maintained around those parts of the boiler exposed to the action of
the fire. In Figures 6, 7, 8, and 9, I have shown another of my improved
boilers, the difference in this boiler being that I have only one fire grate
marked t,-placed-under-the-roof-a, forming-part-of-the-projecting end-of-the
boiler; this fire grate is furnished with two firing doors t¹, see Figure 9,
through which the coals or other fuel can be supplied, first to one half of the firo
grate, and then to the other. Beyond the fire grate are placed the two flues u,
which conduct the smoke and heated air to the combustion chamber.f, the
construction of which, and the arrangement of the tubes h, has already been
described with reference to the foregoing Figures. The roof a¹, of the fire
grate is stayed by four or more bent bars a², secured to the roof a', by bolts or
rivets, or by other means, and attached at each end to angle plates a³, seen
best in Figure 6, and the bent bars a² are connected to the outer shell of the
boiler by stay rods a. The end plates of this boiler are connected together in a
similar manner to those of the boiler last described. A smoke box and damper
similar to those represented in Figure 2 may be applied, if requisite; in this
instance the man-hole s is let into the plate 6', which receives the ends of the
two flucs u.
In Figures 10, 11, and 12, is shewn another of my improved boilers; this
is particularly applicable when wood is the fuel employed for generating steam.
The front end of this boiler is very similar to that represented in Figures 6, 7, 8,
and 9, only in this instance the plate a', forming the roof over the fire grate v,
is carried down below the bottom of the flucs u, in order to obtain more space
between the fire grate and the roof. The outer shell of the boiler is also
carried down as low as the plate a', and a water space of four inches, or more
or less, is left between the said plates, which are stayed by screws a³, in the
same manner as the plates of the fire box of a locomotive engine. The other

page_text: parts of this boiler are similar to those already described with reference to the
preceding Figures.
Having now described the nature of my Invention, and the means of
carrying the same into effect, I declare that I do not claim any of the parts
separately which I have shewn, nor do I confine myself to the precise details
herein set forth, so long as the peculiar character of the Invention is retained.
But what do claim as my Invention is, combining fire or smoke flues with a
multitubular portion of boiler, having a chamber between them, whether such
parts are made altogether in one boiler or any of the parts is made separately,
and subsequently united to the other parts, so as to act with them, in the
manner herein-before described.
In witness whereof, I, the said Edwin Rose, have hereunto set my hand
and seal, this Thirty-first day of October, in the year of our Lord One