Improvements in and relating to Boiler Furnaces or Flues.
Year: 1895

page_text: Date of Application, 18th Dec., 1895
Complete Specification Left, 9th Sept., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Boiler Furnaces or Flues.
I, SAMSON Fox, of the Leeds Forge, New Wortley, Leeds, in the County of
York, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
This invention has reference to a construction of boiler furnace or flue designed
to afford a similar resistance to collapse under external pressure as that afforded
by ordinary corrugated furnaces or flues having corrugations of curved form in
cross section, and which can also be readily and conveniently inserted in place
within and connected to the front plate and combustion chamber or tube plate of
a boiler, or to flanged rings or plates secured thereto, and as easily removed for
repair or other purpose.
My improved boiler furnace or flue is constructed with a number of connected
cones or conical rings so disposed as to form alternate internal and external hollow
ridges of conical form in cross section and the distance apart and depth of which
may be uniform, or not, according to requirements. This formation of the furnace
or flue may be conveniently obtained by the aid of suitably shaped rollers, swages
or dies after the plate of which the furnace or flue is formed, has been brought to
a plain cylindrical form by welding up a rolled plate, or by any other well known
or suitable method of producing a plain cylindrical flue or tube. The apices of
the conical ridges may be of rounded form in cross section.
Boiler furnaces or flues constructed as described can be made of any desired
length, and two or more such lengths can be readily connected together by causing
the couical end of one length to enter the conical end of the adjacent length to
which it can then be secured by welding, rivetting or otherwise as desired. The
conical ends of the furnace or flue are similarly connected to corresponding conical
flanges formed on the front plate and combustion chamber or tube plate of the
boiler, or to separate rings or plates secured to these parts.
In the latter case the furnace or flue can be readily withdrawn from the boiler,
for repair or other purpose, after first disconnecting it from the rear ring or plate
and detaching the front ring or plate from the front plate of the boiler.
Dated this 18th day of December 1895.
COMPLETE SPECIFICATION.
Improvements in and relating to Boiler Furnaces or Flues.
I, SAMSON Fox, of the Leeds Forge, New Wortley, Leeds, in the County of
York, Civil Engineer, 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 has reference to the construction as hereinafter explained with

page_text: reference to and illustrated in the accompanying drawings of a boiler furnace or
flue designed not only to afford resistance to collapse under external pressure
similar to that afforded by ordinary corrugated furnaces or flues having corrugations
of curved form in cross section, but also to be readily and conveniently inserted
in place as shewn within and connected to the front plate and combustion chamber
or tube plate of a boiler, or to flanged rings or plates secured thereto, and as easily
removed for repair or other purposes.
As represented in longitudinal section in Fig. 1 the furnace or flue is constructed
with wide mouthed conical ends a' and a number of connected cones or conical
rings (a) so disposed as to form alternate internal and external hollow ridges of
conical form in cross section; the distance apart and depth of the ridges being
uniform in the example, although they may vary to suit different requirements,
and the apices may be of rounded form in cross section. Conical flanges or rings b,
adapted to fit within the conical ends a¹ of the furnace or flue are formed with
the front plate c and combustion chamber or tube plate d of the boiler and to these
the conical ends a' are connected by welding, rivetting or otherwise.
In the
modification represented in Fig. 2 the conical flanges 6 that enter the wide mouthed
ends of the furnace or flue a are made as separate rings the parts e and e' of which
are secured respectively to the plates c and d of the boiler. This arrangement
enables the furnace or flue a to be readily withdrawn from the boiler for repair
or other purpose, after first disconnecting it from the conical part 6 of the rea.
ringe and detaching the front ring e from the front plate c of the boiler. It will
be seen that the furnace or flue illustrated in Fig. 2 has ridges of less depth
arranged with their apices further apart than those of the flue illustrated in Fig. 1
the conical flanges of the front and tube plates being made of a corresponding
form. The formation of the furnace or flue may conveniently be effected by the
aid of suitably shaped rollers, swages or dies, after the plate of which the furnace
or flue is to be formed, has been brought to a plain cylindrical shape by welding
up a rolled plate, or by any other well known or suitable method of producing
flues or tubes of this character. Boiler furnaces or flues constructed as described
can be made of any desired length, and connected to the front and tube plates as
shewn and, if necessary, two or more lengths can be readily connected together to
form a furnace or flue of the length required to reach from the flange of the front
plate to that of the tube plate by causing the conical end of one length to enter
the wide mouthed conical end of the adjacent length to which it can then be
secured by welding, rivetting or otherwise as desired.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that I know
it has been proposed to construct boiler furnaces or flues with furrows or channels
of a form each resembling as seen in a longitudinal section of the wall two sides
of a triangle and to this construction separately considered I lay no claim but
what I do claim is :-
1. My improved construction comprising parts a, a, b, c and d combined and
arranged substantially as hereinabove described with reference to and shewn in
Fig. 1 of the accompanying drawings.
2. The modification described with reference to and shewn in Fig. 2.
Dated this 8th day of Sentombo- 1906
Dated this 8th day of September 1906.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.