Improvements in Boilers for Hot Water Heating Apparatus.
Year: 1893

page_text: Date of Application, 1st Mar., 1893
Complete Specification Left, 1st Dec., 1893-Accepted, 6th Jan.,
1894
PROVISIONAL SPECIFICATION.
Improvements in Boilers for Hot Water Heating Apparatus.
I, GEORGE HARVEY, of Thorncliffe Lane, Chapeltown, near Sheffield, Foundry
Manager, do hereby declare the nature of this invention to be as follows:-
My invention relates to horizontal boilers of the kind ordinarily known as
"saddle" boilers, used for heating the water which circulates in pipes or coils for
the purpose of heating buildings and other places.
It has for its object novel methods of construction and arrangement of such
boilers, and the parts connected with them, so that the boiler is very effective for
the purpose required, its heating power being greatly increased.
The ordinary saddle boiler consists of two vertical sides connected together by a
semi-circular or arched top such sides and top consisting of an outer and inner
chamber separated from each other so as to leave a sufficient water space between
them, the two chambers being joined together at their lower edges and at their
ends.
A fire grate is provided at the bottom of the internal chamber, and a fire door
in front, an ash pan and door being also arranged below the fire grate.
In the improved boiler, constructed and arranged according to my invention, I
make a semi-circular or other suitably shaped notch or opening in the arched top of
the boiler at the end most remote from the fire door, and I close the end of the
inner chamber completely with a wall or back of fire brick or other material
sufficiently refractory to heat, so that the flame, smoke, and products of combustion
from the fire are compelled to rise through the notch or opening described and to
pass forward through a passage formed preferably by a hollow metal casing above
the arched top of the boiler, to the front of the latter, where they enter a chamber
communicating with a chimney, and provided if required with a damper, and a soot
door for cleaning.
By this arrangement the top of the boiler is highly heated by the gases in their
passage, and I make the socket or connection to which the circulating pipe from the
boiler is connected, pass up through the passage described and through the top of
the external case forming the latter.
In this way the water in the outgoing circulating pipe is highly heated and
receives an impetus in exactly the position where it is most needed to promote the
circulation. The return pipe enters the boiler in a suitable part of the bottom of
the latter in the usual way.
Instead of the back of the boiler being closed, as described, by a wall or back of
fire-brick, it may be closed by a hollow end connected with the boiler so that the
water circulates through it.
The improved horizontal or "saddle" boiler constructed and arranged according
to my invention, is very effective and economical in working.
It is preferably placed in a cast iron stand, the lower part of which forms an ash
pan and is provided with a door in front.
The boiler may stand quite alone and independent.
I do not confine myself to the precise details, which may be varied more or less
as may be found desirable.

page_text: Improvements in Boilers for Hot Water Heating Apparatus.
I, GEORGE HARvey, of Thorncliffe Lane, Chapeltown, near Sheffield, Foundry
Manager, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement and accompanying drawing that is to say :—
My invention relates to horizontal boilers of the kind ordinarily known as
"saddle" boilers, used for heating the water which circulates in pipes or coils for
the purpose of heating buildings and other places.
It has for its object novel methods of construction and arrangement of such
boilers, and the parts connected with them, so that the boiler is very effective for
the purpose required, its heating power being greatly increased.
The accompanying drawing is in illustration of my invention, Figure 1 being a
perspective view, and Figure 2 a vertical transverse section.
Figures 3 and 4 are longitudinal vertical sections, shewing two slightly modified
forms of construction.
Figure 5 is a horizontal section through the boiler shewn in Figure 3, and
Figure 6 a similar section through that shewn in Figure 4.
The ordinary saddle boiler consists of two vertical sides a, b, connected together
by a semicircular or arched top c, such sides and top consisting of an outer and.
inner chamber separated from each other so as to leave a sufficient water space
between them, as shewn in Figures 2, 3, 4, 5, and 6, the two chambers being joined
together at their lower edges and at their ends.
A firegrate d is provided at the bottom of the internal chamber, and a firedoor e
in front, an ash-pan and door f being also arranged below the firegrate.
In the improved boiler constructed and arranged according to my invention, I
make a semi-circular or other suitably shaped notch or opening g, Figure 3, in the
arched top c of the boiler at the end most remote from the firedoor e, and I close
the end of the inner chamber completely with a wall or back of firebrick or other
material sufficiently refractory to heat, so that the flame, smoke, and products of
combustion from the fire are compelled to rise through the notch or opening g
described and to pass forward through a passage i formed preferably by a hollow
metal casing k above the arched top of the boiler, to the front of the latter, where
they enter a chamber communicating with a chimney, and provided if required with
a damper, and a soot door for cleaning.
By this arrangement the top c of the boiler is highly heated by the gases in their
passage, and I make the socket o or connection to which the circulating pipe p
from the boiler is connected, pass up through the passage i and through the top of
the external case k forming the latter.
In this way the water in the outgoing circulating pipe p is highly heated and
receives an impetus in exactly the position where it is most needed to promote the
circulation and increase the heating power of the boiler.
The return pipe (not shewn in the drawing) enters the boiler in a suitable part of
the bottom of the latter in the usual way.
Instead of the back of the boiler being closed, as described, by a wall or back h
as shewn in Figure 3, it may be closed by a hollow end r (Figures 4 and 6)
connected with the boiler so that the water circulates through it.
The improved horizontal or "saddle" boiler constructed and arranged according
to my invention, is very effective and economical in working.
ash
It is preferably placed in a cast iron stands, the lower part of which forms an
and is provided with a door in front.
pan
The boiler may stand quite alone and independent.
I do not confine myself to the precise details, which may be varied more or less
as may be found desirable.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In horizontal or saddle boilers for hot water heating apparatus, the com-
bination with the boiler a, b, c, of the opening g, chamber i communicating with a
chimney socket o for outgoing circulating pipe p passing through the chamber i,
and wall or back h of material sufficiently refractory to heat, substantially as and
for the purpose described and illustrated in Figure 3.
2. In horizontal or saddle boilers for hot water heating apparatus, the com-
bination with the boiler a, b, c, of the opening 9, chamber i communicating with a
chimney 1, socket o for outgoing circulating pipe p, passing through the chamber i,
and hollow end or back to the boiler, substantially as and for the purpose
described, and illustrated in Figures 4 and 6.
This 1nt doof D
1000
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.