An Improved Form of Boiler for Hot Water Circulation or other purposes.
Year: 1891

page_text: Date of Application, 24th Aug., 1891
Complete Specification Left, 6th May, 1892-4ccepted, 11th June, 1892
PROVISIONAL SPECIFICATION.
An Improved Form of Boiler for Hot Water Circulation or other
purposes.
We, JOHN POAT, Gentleman, of Richmond Villa, Guernsey and CHARLES
JAMES WATTS Engineer of Upper Ground Street, Blackfriars, London, S.E., do
hereby declare the nature of this invention to be as follows:-
:-
This invention consists of a hot water circulating boiler of the well-known
improved tubular type, such as that described in the Specification of the above
named John Poat, No. 20,661 of 1889, but without the extension pipes shewn
therein, and with only a single row of pipes over the fire instead of two as therein
indicated.
Above this boiler and resting on the hollow waterway castings at each end I
place a flat horizontal cast iron flue casting formed with a water jacket all round
except at the front end which is left open to form the return flue. The interior is
divided longitudinally into two flues by a partition.
The heated gases and products of combustion leaving the furnace below are
conducted by means of a vertical aperture into one of these flues and then are
directed by a soot door in front, back to the end of the second flue, and the gases
are then conducted upwards through the vertical flue formed in the casting for
this purpose.
The flue casting thus formed utilizes very effectively the waste heat from the
furnace, and the water heated in the jacket can be kept separate from the
circulation around the boiler, and employed to heat another distinct circulation
when desired.
When connected to the circulation beneath, spigot and socket joints are formed
between the waterway castings and flue casting, and india-rubber rings are inserted.
Lugs and screw clamps are added to hold the flue casting in position and compress
the rubber.
By this means great economy is attained, very little heat escaping unused, while
a small compact convenient size boiler is obtained which occupies much less room
than the one above referred to.
1 1001
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Agent for Applicants.
COMPLETE SPECIFICATION.
An Improved Form of Boiler for Hot Water Circulation or other
purposes.
We, JOHN POAT, Gentleman, of Richmond Villas, Guernsey, and CHARLES
JAMES WATTS, Engineer, of Upper Ground Street, Blackfriars, London, S.E.
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 :―
This invention is designed to supply a boiler of great heating power and
economical application of fuel for use in hothouses and similar purposes.
It consists of a hot-water circulating boiler of the well-known improved tubular
type, such as that described in the Specification of the above-named John Poat,
No. 20,661 of 1889, but without the extension pipes shewn therein,

page_text: We will now proceed to describe the invention with reference to the
accompanying drawings in which
Fig. 1 shows a side and front elevation of our improved boiler.
Fig. 2 shows a longitudinal sectional elevation of the same.
Fig. 3 shews an end elevation with single flue, the end castings being removed.
It will be seen that above the boiler and resting on the hollow waterway
casting a, and b, at either end, we place the flat shaped oval horizontal iron
flue C,
formed with a waterjacket all round, except at both ends, one of which is
left open to form the return flue, and one is closed with a soot door.
The interior of this flue c, may if preferred be divided longitudinally by a
partition, into two flues or a double fluc.
This partition is not however indispensable and may sometimes be omitted.
Instead of dividing the flue thus, we prefer in some cases to place the
aperture d, from the boiler to the flue, near the front of the boiler.
The heated gases and products of combustion leaving the furnace below are
conducted by means of a vertical aperture d, into the flue e, above. In the case
of the undivided flue we allow them to travel from end to end of the flue before
passing off into the chimney.
In the divided flue they pass first into one of the half flues and are then directed
to a soot-door e, in front, and back, to the end of the second flue, whence they pass
to the chimney.
The top waterjacket thus formed utilizes very effectively the waste heat from
the furnace and is connected to the circulation beneath by spigot and socket joints
formed between the waterway castings and waterjacket, and india-rubber rings are
inserted. Lugs and screw clamps are added to hold the waterjacket in position
and compress the rubber.
By this means great economy is attained, as very little heat escapes unused,
while a small compact convenient sized boiler is obtained which occupies much
less room than others of equal power.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what we
claim is :-
In a boiler for hot water circulation and like purposes the combination of an
improved tubular boiler with the flat shaped horizontal flue and waterjacket c, with
or without the partition, as herein described and set forth.
Data
M1000
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.