Year: 1899

page_text: I, ERNEST GEARING, of Clarence Drive, Harrogate, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention has reference to an improved manufacture of boiler flues in which
I combine annular ribs or projections with corrugations the said annular ribs or
projections forming parts of the annular ridges that project outwardly into the
water space of the boiler and which are connected by reversely curved portions of
the flue wall which may be of the kind known as the Morison suspension form, or
of the Fox type, the outwardly projecting annular ridges being either such as
formed in the Morison or Fox flues or combined with intervening portions of flue
of what is called the barrel type which also may be formed with outwardly pro-
jecting ribs according to my invention.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.
I, ERNEST GEARING, of Clarence Drive, Harrogate, in the County of York,
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:-
My invention has reference to an improved manufacture of boiler flues in which
I combine annular ribs or projections with corrugations the said
annular ribs or projections forming parts of the annular ridges that
project outwardly into the water space of the boiler and which are connected by
reversely curved portions of the flue wall which may be of the kind known as
the Morison suspension form, or of the Fox type, the outwardly projecting annular
ridges being either such as are formed in the Morison or Fox flues or combined
with intervening portions of a flue of what is called the barrel type which also
may be formed with outwardly projecting ribs according to my invention.
[Price 8d.]

page_text: Referring to the accompanying drawings,
Fig. 1 shows in longitudinal section a portion of a Morison suspension flue
embodying my invention.
Fig. 2 is a similar view showing a Fox flue embodying this invention and
Fig. 3 shews in like manner the application of my invention in a flue of the
barrel type.
>
a a are annular ribs or projections rolled or formed integrally with the annular
ridges or corrugations bb that project outwardly into the water space of the
boiler. cc are the reversely curved portions of the flue wall connecting the
annular ridges or corrugations b b.
In Fig. 3 the barrel like portions d d of the flue wall are shewn made with
outwardly projecting ribs a¹, but these ribs a¹ may be dispensed with.
Having now particularly described and ascertained the nature of the said
invention and the manner of. carrying it into practical effect I desire to have it
understood that I know it has been proposed to construct cylindrical furnaces
and flues for steam boilers with solid strengthening rings or ribs formed on them
by rolling in the circumferential direction from plates or slabs having bands of
increased thickness and I do not claim that construction but I declare that what
I do claim is :-
My several improved constructions of boiler flues hereinabove described with
reference respectively to and illustrated in Fig. 1, in Fig. 2, and in Fig. 3 of the
Coving dramines
Dated this 2nd day of December 1899.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.