IMPROVEMENTS IN THE CONSTRUCTION
Year: 1885

page_text: This Specification was, upon the 22nd day of August 1887, amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
I, JOHN ROBERT ROBSON of Parliament Street Armley near Leeds in the
County of York Boiler Maker do hereby declare the nature of said Invention
to be as
OF
IMPROVEMENTS IN THE CONSTRUCTION
"
for
follows:-
VERTICAL
BOILERS
"
My improvements have particular reference to the construction of vertical steam
boilers and the object thereof is the reduction of cost of manufacture and of the
liability to get out of repair whilst at the same time a quick generation of steam
and a thorough circulation of the water in the boiler are effected.
The boiler consists of an outer shell and within it is an inner shell forming the
fire box. Within this fire box is provided what may be termed a small or inner
boiler of cylindrical or ring form. The space between the inner and outer shell
thereof is in direct communication at the bottom with the interior of the outer
boiler, the space within the inner cylindrical or ringed boiler forms an inner
fire-box.
I allow sufficient space between the inner boiler and the inner shell of the outer
boiler to be of such dimensions as to allow the flames and heat to pass up within
the inner fire box and down between the two boilers through passages into an
outer flue, so that the heat not only comes in contact with the whole of the plates
of the inner boiler but also with the entire inner shell of the outer boiler.
The bends of the top of the inner boiler and top of the inner shell of the outer
boiler are welded up to their vertical sides instead of being rivetted. The outer
boiler and the inner boiler are coupled together at the bottom by a plate to which
they are rivetted, and at this point free communication and circulation of water
take place between the two. Fire bars of ordinary construction are or may be
used in the fire box, and the opening from the exterior into the same for firing
purposes and the fire door therefor are or may be of the usual construction.
1
100K

page_text: Fig. 1 is a front elevation. Fig. 2 a sectional plan on line A. B. Fig. 1. Fig. 3
a vertical section on line C. D. Fig. 2. Fig. 4 a vertical section on line E. F.
Fig. 2.
The boiler consists of an outer shell a and within it is an inner shell b which
forms the firebox c.
Within this firebox c is provided what may be termed a small or inner boiler d
of cylindrical or ring form.
The top part of the space e between the inner shell and outer shell
thereof is
in direct communication at the bottom / with the interior of the outer boiler. made
to communicate with the top part of the interior of the boiler (i) by means of the pipes (E)
and at the bottom directly by the space (h).
The space within the inner or cylindrical boiler d forms an inner firebox.
I allow sufficient space between the outer shell of the inner boiler, and the inner
shell of the outer boiler, to allow the flames and heat to pass up within the inner
firebox and down between the two boilers or water spaces in the direction shewn by
arrows, through passages into an outer flue 1, so that the heat not only comes in
contact with the whole of the plates of the inner boiler d but also with the entire inner
shell a of the outer boiler i.
The bends m and n respectively of the top of the inner boiler d are welded or
rivetted up to their vertical sides as may be preferred.
The outer boiler and the inner boiler d are coupled together at the bottom by
a ring or plate o to which they are rivetted, and at this point free communication
and circulation of water takes place between the two.

page_text: Firebars of ordinary construction are or may be used in the inner firebox and
an opening from the exterior into the same for firing purposes, and the fire door
are or may
be of ordinary construction.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The general arrangement, construction and combination of the various parts
forming the boiler, substantially as and for the purposes herein set forth. a boiler
containing an inner fire box (j) surrounded by an outer flue or fire box (c) the said flue or
fire box (c) being separated from the inner fire box (j) by an intermediate boiler or water
space (e) and from the main boiler shell by the water space (i) substantially as and for
the purposes herein set forth.

page_text: 1, JOHN
ПОВЕКТ ROBSON Of Parliament Street Armley near Leeds in the
County of York Boiler Maker do hereby declare the nature of said Invention
for "IMPROVEMENTS IN THE CONSTRUCTION OF VERTICAL BOILERS
" to be as
follows:-
My improvements have particular reference to the construction of vertical steam
boilers and the object thereof is the reduction of cost of manufacture and of the
liability to get out of repair whilst at the same time a quick generation of steam
and a thorough circulation of the water in the boiler are effected.
The boiler consists of an outer shell and within it is an inner shell forming the
fire box. Within this fire box is provided what may be termed a small or inner
boiler of cylindrical or ring form. The space between the inner and outer shell
thereof is in direct communication at the bottom with the interior of the outer
boiler, the space within the inner cylindrical or ringed boiler forms an inner
fire-box.
I allow sufficient space between the inner boiler and the inner shell of the outer
boiler to be of such dimensions as to allow the flames and heat to pass up within
the inner fire box and down between the two boilers through passages into an
outer flue, so that the heat not only comes in contact with the whole of the plates
of the inner boiler but also with the entire inner shell of the outer boiler.
The bends of the top of the inner boiler and top of the inner shell of the outer
boiler are welded up to their vertical sides instead of being rivetted. The outer
.boiler and the inner boiler are coupled together at the bottom by a plate to which
they are rivetted, and at this point free communication and circulation of water
take place between the two. Fire bars of ordinary construction are or may be
used in the fire box, and the opening from the exterior into the same for firing
purposes and the fire door therefor are or may be of the usual construction.