improvements in Steam Generators.
Year: 1897

page_text: improvements in Steam Generators.
We, DAVID BURNETT, of 6, Rutland Crescent, Paisley Road, West, Glasgow,
Engineer, and JOHN BURNETT, of 340, Dumbarton Road, Glasgow, Boilermaker,
do hereby declare the nature of this invention to be as follows:-
This invention relates to steam generators and it has for its object to provide
them with one or more tubular arrangements for promoting water circulation and
the rapid generation of steam.
The invention is applicable to both marine and land boilers.
The essential feature of the invention consists in fitting within the combustion
chamber or fire box of the boiler one or more coils of tubing which is or are so
arranged and connected that the cold water in the bottom of the boiler can be
circulated instead of being allowed to remain in a practically stagnant condition
as at present. The coil or coils are so connected that they can be blown through
when necessary and thoroughly cleaned.
In carrying out the invention for boilers of the marine type we arrange at the
back of the fire box a (or more than one) flat coil or convolutions of tubing. The
lower end of the coil pipe passes out through a hollow stay or its equivalent
secured to the inner and outer shells of the boiler and is connected with a three
way cock situated conveniently near the bottom of the boiler. This three way
cock has a blow off branch and also a branch leading to the water space at the
bottom of the boiler. The upper end of the coil is passed through the crown or
other part of the fire box and fixed with a brass nut screwed inside
and outside. The end of the pipe is bent down with a swan neck or other bend
or it may be provided with a cap or hood.
One (or more) coil may be supplied for each furnace.
In the case of a vertical land boiler three or other number of circular coils can
be arranged within the fire box and be braced together. The upper and lower ends
of the coils would be connected and arranged in the same or similar manner to the
coils of the marine boiler.
Screw plates or retarders may be fitted within each coil.
A three way cock would be preferably provided for each coil.
If desired circular coils may be used for marine or horizontal boilers or a com-
bination of circular and flat coils and in the case of vertical boilers flat coils may
be used or a combination of flat and circular coils.

page_text: *Improvements in Steam Generators..
We, DAVID BURNETT, of No. 6, Ruthland Crescent, Glasgow, in the County
of Lanark, Engineer, JOHN BURNETT, of No. 340, Dumbarton Road, Glasgow, in
the County of Lanark, Boilermaker, 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:.
3
A
This invention relates to steam generators and it has for its object to provide
them with one or more tubular arrangements for promoting water circulation and
the rapid generation of steam. The invention is applicable to both marine and
land boilers.
In order that this invention may, be clearly rendered; reference may be had to
the accompanying sheet of drawings, in which.
Fig. 1 is a sectional elevation of boiler end and fire box also external pipes
and cocks.
JA
Fig. 2 end view of same Fig. 3, shewing circular coil in vertical boiler..
Fig. 4 horizontal boilers shewing circular coil in furnace flue.
Fig. 5 end view of same.
26.1.
1.
The essential feature of the invention consists in fitting within the combustion
chamber, or fire box of the boiler one, or more coils of tubing, B, which is, or are
so arranged and connected that the cold water in the bottom of the boiler can be
circulated instead of being allowed to remain in a practicably stagnant condition
as at present.
The coil or coils, are so connected that they can be blown through' by cock A,
when necessary, and thoroughly cleaned as shewn on Fig. 2, and 3. In carrying
out the invention for boilers of the marine type, we arrange at the back of the
fire box a (or more than one) flat coil B, or convolutions of tubing.
The lower end of the coil pipe passes out through a hollow stay D, or its
equivalent' secured to the inner and outer shells of the boiler, and is connected with
a three way cock A, situated conveniently near the bottom of the boiler as shewn
on Fig. 2 and 3. This three way cock A, has a blow off branch G, with flange H,
bolted to boiler, and also a branch leading to the water space E, at the bottom of
the boiler.
The upper end of the coil B, is passed through crown or other part of the fire
box and fixed with a brass nut F, screwed inside and outside as shewn on Fig. 3.
The end of the pipe C, is bent down with a swan neck or other bend, or it may
be provided with a cap or hood as shewn on Fig. 1.
One (or more) coils may be supplied for each furnace.
In the case of a vertical land boiler three or other number of circular coils can
be arranged within the fire box and be braced together.
The upper and lower ends of the coils would be connected and arranged in the
same or similar manner to the coils of the marine boiler, as shewn by Fig. 1,
and 2. Screw plates or retarders may be fitted within each coil. A three way
cock A, would be preferably provided for each coil. If desired circular coils B.
may be used for marine or horizontal boilers as shewn by Fig. 4, & 5, or'a com-
bination of circular and flat coils and in the case of vertical boilers flat coils may
be used or a cimbination of flat and circular coils.
Having now particularly described and ascertained the nature of this said inven-
tion and in manner the same is to be performed, we declare that what we
claim is:
"The arrangement and combination of circular and flat coils in combustion

page_text: chambers and furnace flues of boilers as herein described and set forth and illustrated
in the drawings hereto annexed."
D: T... Ifth day of Narambon 1807