Improvements in Boilers for Generating Steam. and other purposes.
Year: 1893

page_text: Date of Application, 28th Jan., 1893
Complete Specification Left, 27th Oct., 1893—Accepted, 2nd Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in Boilers for Generating Steam. and other purposes.
I, WILLIAM JOSEPH PARKYN, of the Firm of Daniel Adamson & Co., of
Dukinfield, in the County of Chester, Engineers and Boiler Makers, do hereby
declare the nature of this invention to be as follows :-
My invention relates particularly to the flues of steam boilers and the chief
object of my invention is to connect the sections or tubes forming the flue in such
manner that the expansion and contraction of the flue may be absorbed at or near the
flanges and so relieve the end plates of the boiler of much of the strain to which
they are commonly liable.
In constructing a boiler flue according to my invention I form some of the
flanges of the tubes very much deeper than heretofore, and 1 prefer to flange
the ends of adjoining tubes so that my improved deep flange comes opposite to
an ordinary or shallow flange, by which means the operation of caulking round
the usual intermediate ring from inside the flue is not in any way interfered
with and the deep flanges on the tubes form deflecting plates or surfaces for the
furnace flames to act upon.
In place of making the adjoining flues with one deep or improved and one shallow
or ordinary flange all or any number of the flanges may be deep ones and I prefer
to flange the tubes surrounding the furnace in the ordinary manner so as to avoid
reducing the area of the flue at this portion.
Tubes may have the improved deep flange at each end and be connected to tubes
with the ordinary shallow flanges or if preferred tubes may have one deep and one
shallow flange.
My improvements are applicable to all classes of cylindrical tubes such as plain,
corrugated, or taper tubes, in the latter case each tube would have a shallow flange
at its large end and a deep flange at the small end and a deep and shallow flange
would be connected throughout to form a flue.
Dated this 27th day of January 1893.
H. B. BARLOW & GILLETT,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Bollers for Generating Steam and other purposes.
I, WILLIAM JOSEPH Parkyn, of the Firm of Daniel Adamson & Co. of
Dukinfield, in the County of Chester, Engineers and Boiler Makers, 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 relates particularly to the flues of steam boilers and the chief
object of my invention is to connect the sections or tubes forming the flue in such
manner that the expansion and contraction of the flue may be absorbed at or near
the flanges and so relieve the end plates of the boiler of much of the strain to
which they are commonly liable.
In constructing a boiler flue according to my invention I form some of the
flanges of the tubes very much deeper than heretofore, and I prefer to flange the
ends of adjoining tubes so that my improved deep flange comes opposite to an
ordinary or shallow flange, by which means the operation of caulking round the
usual intermediate ring from inside the flue is not in any way interfered with and

page_text: the deep flanges on the tubes form deflecting platos or surfaces for the furnace
flames to act upon.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying three sheets of drawings reference boing
had to the figures and letters marked thereon.
Fig. 1 is a sectional elevation of part of two tubes of a boiler flue made according
to my invention and with an ordinary intermediate ring.
Figs. 2 to 12 are sectional views of parts of boiler flues made according to my
invention.
Figs. 18 and 14 represent end view and sectional elevation respectively of a
modification of my invention.
Fig. 15 represents a marine type of boiler, and Figs. 16, 17 and 18 different
forms of vertical boilers made according to my invention.
Similar letters refer to similar parts throughout the several views.
In Fig. 1, a represents one end of a boiler tube with an ordinary flange a' and
6 the adjoining tube with an extra deep flange b', these parts being secured together
by rivets o which pass through the usual intermediate ring d, the combination of a
shallow or ordinary flange with au extra deep flange as shown in this figure
clearly illustrates my invention and explains the improved construction.
In Fig. 2, the tubes a are shown with ordinary flanges a' at both ends, and the
tubes have the extra deep flanges & a deep and an ordinary flange being
secured together at each joint.
Fig. 3 is a modification in which the tubes a have a shallow or ordinary flange a¹
at each end, two of these tubes a being secured together and the outer ends of these
connected tubes a are secured to the deep flanges of the tubes b, the two tubes b
being connected together by shallow flanges b³.
Fig. 4 ropresents tubes b provided with a shallow flange at one end and an
extra deep flange b' at the other, a shallow and deep flange being rivetted together
throughout.
Fig. 5 is a similar construction of boiler flue to that shown in Fig. 2, the only
difference being that the tubes a and b are shown corrugated between their flanges a
and 6ª and Figs. 6 and 7 are slight modifications the tubes a and b being fishbacked
and hollow fishbacked respectively.
Fig. 8 is a similar construction having an extra deep augular instead of a straight
flange b¹.
Fig. 9 is similar in construction to Fig. 3 with deep angular flanges 6' and
shallow flanges b².
Fig. 10 represents one tube with two shallow flanges a' and the adjoining_tube
with a specially shaped oxtra deep flange 6', a shallow and a deep flange being
rivetted together.
Fig. 11 represents tubes b with deep angular flanges 6' at each end the flanges
being rivetted together in the ordinary manner. In practice I propose to alternate
between two or more such sections, tubes a with shallow flanges.
Fig. 12 is another example of tubes with ordinary shallow and tubes with extra
deep flanges, an ordinary and a deep flange being secured together.
In Figs. 13 and 14 the tubes are made with a shallow flange at one end
and at the other end a deep flango which is partly cut away so that on the
top of the flue there is a deep flange, and at the bottom a flange of tho ordinary
depth or thereabouts thus forming an eccentric flange which prevents the flue
getting hog-backed.
Fig. 15 illustrates a marine type of boiler in section composed of tubes 6 provided
with an ordinary or shallow flange b' at one end and an extra deep flange b¹ at the
other end a deep and an ordinary flange being secured together.
Figs. 16; 17 and 18 are sectional elevations which show my improvements applied
to different forms of vertical boilers, the tubes a having shallow or ordinary flanges a
and the tubes b extra deep flanges b¹.
The drawings represent various arrangements of tubes flanged according to my

page_text: invention and different applications of the same to horizontal and vertical boilers
and as the fireboxes may be parallel as usual no reduction of fire grate area is
necessary.
By my invention the liability to grooving and straining the end plates and flue
seams is materially reduced as the unequal expansion and contraction of the flues
is readily taken up by the flexible nature of the seams. The extra deep flanges
also give a greater surface for the flames and heat to act upon and thore is great
facility for caulking the joints and cleaning the flues.
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. A boiler flue composed of a tube or tubes with an ordinary shallow flange at
one end or at both ends in various combinations with a tube or tubes provided
with an extra deep flange at one end or both ends substantially as and for the
purposes described and as illustrated by the accompanying drawings.
2. The several constructions, combinations and arrangements of parts embodying
my improvements in boiler flues substantially as herein shown and described.
Dated this 26th day of October 1893.
"
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicant.