Year: 1897

page_text: Date of Application, 20th Feb., 1897
Complete Specification Left, 20th Nov., 1897-Accepted, 1st Jan., 1898
We, FRANCIS BLANKLEY BRAMIIAM and ALFRED JOIN CRIPPIN, trading as Joseph
Bramham, of 104, Dale Street, Liverpool, Hot-water Engineers, do hereby declare
the nature of the said invention to be as follows:
This invention relates to boilers for heating the circulating water of hot-water
heating systems.
A boiler according to this invention is of saddle form, with closed ends, the
furnace being disposed within the same. The front end of the boiler has suitable
openings and doors thereto for stoking and removal of ash, and the rear end in
most cases will be "wet-ended" or water filled.
Within the arch formed by the saddle a cylindrical water-jacketted flue is
formed, which extends from the rear of the boiler to the front, through which
latter it emerges and is connected to the uptake or chimney. Where the flue
makes its exit from the boiler front, a box may be cast on the front plate, having
a door for access to the flue, and a socket for the uptake or chimney flue.
The gases of combustion therefore beat the wet sides and end of the boiler, and
on rising to the top of the saddle arch they heat the under side of the said internal
water jacketted flue and finally enter the latter and pass through the same from
rear to front of the boiler and thence to the chimney. There is thus a large water
heating area presented to the furnace gases, and the latter are surrounded by
water until they emerge from the boiler front. It is therefore impossible for the
temperature of the shell of the boiler to rise above that of the water, and there is
consequently no liability of the charring or firing of any wood lagging or wood
in its immediate vicinity.
Where the boiler is set in brickwork a return or zig-zag flue may be formed in
such brickwork, through which the furnace gases pass before entering the
chimney.
It must be understood that although the internal flue above referred to is
preferably cylindrical, it may be of any other convenient cross section.

page_text: declare the nature of this invention and in what manner the same is to be. per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to boilers for heating the circulating water of hot water
heating sytems.
In the drawings hereto annexed, Figure 1 is a sectional elevation of our
improved boiler, Figure 2 being a cross section and Figure 3 a perspective view
thereof.
A boiler according to this invention is of saddle form, a, with closed ends, the
furnace bars b being disposed within the saddle. The front of the boiler is closed
by a front plate c having doors d and e for stoking and removal of ash.
rests on cast iron base plate. The rear end of the boiler is preferably
ended" or water filled.
The boiler
wet
Within the arch formed by the saddle a, a cylindrical water-jacketted flue g is
tormed and extends from the rear of the boiler to the front plate, through which
latter it emerges and is conducted into the uptake or chimney. Where the flue g
makes its exit from the boiler front, a box h is cast on or attached to the front
plate, and has a door i giving access to the flues, and a socket k, for the uptake
or chimney. is a damper for regulating the chimney draught. m is the hot water
delivery pipe and n are the cold water return pipes, the latter being disposed near
the front and near the bottom of the boiler.
l
The gases combustion therefore heat the wet sides and end of the boiler, and
on rising to the top of the saddle arch they heat the under side of the said internal
water jacketed flue and enter the latter and pass through the same from rear to
front of the boiler, and thence to the chimney. There is thus a large water
heating area presented to the furnace gases, and the latter are entirely surrounded
by water until they emerge from the boiler. It is therefore impossible for the
temperature of the shell of the boiler to rise above that of the water, and there is
consequently no liability of the charring or firing of any lagging or wood in its
immediate vicinity.
Where the boiler is set in brickwork a return or zig-zag flue may be formed in
such brickwork, through which the furnace gases pass before entering the
chimney.
It must be understood that although the internal flue above referred to is
preferably cylindrical, it may be of any other convenient cross section.
Having now particularly described and ascertained the nature of
invention and in what manner the same is to be performed, we declare that what
we claim is:
our said
A saddle boiler the characteristic feature of which is the formation of a water
surrounded flue, such as g, in the crown of the saddle, for the purpose of obtaining
increased heating surface, substantially as herein set forth with reference to the
drawings.
J. A. COUBROUGH
Registered Patent Agent (Qual. by Exam.)
10 St. George's Crescent Liverpool Agent for the Applicants.