IMPROVEMENTS IN THE MODE OF FITTING THE TUBES IN THE FLUES OF CORNISH AND OTHER STEAM BOILERS
Year: 1867

page_text: LETTERS PATENT to William Wilson Wood and John Wood, both of
Don Boiler Works, Sheffield, in the County of York, for the Invention
of "IMPROVEMENTS IN THE MODE OF FITTING THE TUBES IN THE FLUES OF
CORNISH AND OTHER STEAM BOILERS."
Sealed the 1st November 1867, and dated the 7th June 1867.
PROVISIONAL SPECIFICATION left by the said William Wilson Wood
and John Wood at the Office of the Commissioners of Patents, with
their Petition, on the 7th June 1867.
We, WILLIAM WILSON WOOD and JOHN WOOD, both of Don Boiler Works,
Sheffield, in the County of York, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MODE OF FITTING THE TUBES IN THE FLUES
OF CORNISH AND OTHER STEAM BOILERS," to be as follows:-
In affixing cross or diagonal tubes in the flues of steam boilers great
difficulty is experienced in getting them to their places, more particularly
when the flues are finished and fixed in their places in the boilers, and it is
often found absolutely impossible to take them out whole or to put new ones
in a boiler which is completed, or has been working, without taking out the
flues, or otherwise using packings to make up the length of the cross or
diagonal tubes, which latter method is obviously very objectionable, and
entails difficulty in making the ends of the cross or diagonal tubes properly
tight.

page_text: By the adoption of the system herein described all the above-named
difficulties may be obviated, as the cross or diagonal tubes may be readily
fixed in 'the flue or fire-box of any boiler, whether vertical or otherwise, after
such boiler be completed, or if it even be fixed on its seat ready for working
without altering any part of its present construction or taking any part of it
to pieces. For this purpose we propose to make the cross or diagonal tubes
with a flanch at each end in one and the same piece, with the cross or
diagonal tube or otherwise, both the said flanches to be attached to the flue
or fire-box of the boiler inside. We further propose to make the flanched ends
of the said cross or diagonal tubes at an oblique angle to the centre line of the
said cross or diagonal tube, so that when the tube is fixed in position in the
flue of a steam boiler, the said cross or diagonal tubes will not be at right
angles to the centre line of that flue. By this means it will readily be seen
that the cross or diagonal tubes may be easily passed inside the flue to and
fixed in the places where they are required by making the flanches of the
cross or diagonal tubes at each end at such an angle that a straight line
drawn through the centre of the cross or diagonal tube from the edge of one
fanch to the edge of the other in those parts of the said flanches where the
angles formed by the flanches with the sides of the cross or diagonal tubes are
most acute (or which is the same thing, so that a straight line drawn through
be centre of the cross or diagonal tube from the edge of one flanch to the
edge of the other on that side of each flanch where the angle formed by the
side of the flue of boiler, and the side of the internal cross or diagonal tube
is less than a right angle) shall be either at right angles to the, centre line of
the flue of the boiler, or if it be not at right angles to this line shall be
inclined in the same direction to the centre line of the flue as is the centre
line of the cross or diagonal tube.
The cross or diagonal tubes as above specified may be of any section, as
round, square, or oval; they may also be fixed or applied in all cases with
equal facility, provided that the flanched ends be properly formed so as to give
the cross or diagonal pipes. the desired inclination to the centre line of the
flue.
The tubes may be applied to any kind of boiler with one or more flues or
fire boxes, whether such boiler be placed horizontally, vertically, or in any
other position, and whether the said flues or fire-boxes be circular, oval, or
otherwise.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Wilson Wood and John Wood in the Great Seal
Patent Office on the 6th December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
WILSON WOOD and JOHN Wood, both of Don Boiler Works, Sheffield, in
the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of June, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
William Wilson Wood and John Wood, Her special licence that we, the said
William Wilson Wood and John Wood, our executors, administrators, and
assigns, or such others as we, the said William Wilson Wood and John
Wood, our executors, administrators, and assigns, should at any time agree
with, and no others, from time to time, and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE
MODE OF FITTING THE TUBES IN THE FLUES OF CORNISH AND OTHER STEAM
BOILERS," upon the condition (amongst others) that we, the said William Wilson
Wood and John Wood, our executors or administrators, by an instrument
in writing under our, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said William Wilson Wood and John
Wood, our do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-.
tained in and by the following statement, reference being had to the Sheet of.
Drawings hereunto annexed, and to the letters and figures marked thereon.
(that is to say) :-
-
In affixing cross or diagonal tubes in the flues of steam boilers great
difficulty is experienced in getting them to their places, more particularly
when the flues are finished and fixed in their places in the boilers, and it is
often found absolutely impossible to take them out whole or to put new ones
in a boiler which is completed or has been working without taking out the

page_text: flues or otherwise using packing to make up the length of the cross or
diagonal tubes, which latter method is obviously very objectionable and entails
difficulty in making the ends of the cross or diagonal tubes properly tight.
By the adoption of the system herein described all the above-named
difficulties may be obviated, as the cross or diagonal tubes may be readily
fixed in the flue or fire-box of any boiler, whether vertical or otherwise, after
such boiler be completed, or even when fixed on its seat ready for working
without altering any part of its present construction or taking any part of it
to pieces. For this purpose we propose to make the cross or diagonal tubes
with a flange at each end in one and the same piece with the cross or diagonal
tube or otherwise, both the said flanges to be attached to the flue or fire-
box of the boiler inside; we further propose to make the flanged ends of the
said cross or diagonal tubes at an oblique angle to the centre line of the said
cross or diagonal tube, so that when the tube is fixed in position in the flue of
a steam boiler the said cross or diagonal tubes will not be at right angles to
the centre line of that flue. By this means it will be readily seen that the
cross or diagonal tubes may be easily passed inside the flue to and fixed in
the places where they are required by making the flanges of the cross or
diagonal tubes at each end at such an angle that a straight line drawn
through the centre of the cross or diagonal tube from the edge of one flange
to the edge of the other in those parts of the said flanges where the angles.
formed by the flanges with the sides of the cross or diagonal tubes are most
acute (or which is the same thing so that a straight line drawn through the
centre of the cross or diagonal tube from the edge of one flange to the edge of
the other on that side of each flange where the angle formed by the side of
the flue of the boiler and the side of the internal cross or diagonal tube is less
than a right angle) shall be either at right angles to the centre line of the
flue of the boiler, or if it be not at right angles to this line shall be inclined
in the same direction to the centre line of the flue as is the centre line of the
cross or diagonal tube.
The cross or diagonal tubes as above specified may be of any section, as
round, square, or oval; they may also be fixed or applied in all cases with
equal facility provided that the flanged ends be properly formed so as to give
the cross or diagonal pipes the desired inclination to the centre line of
the flue.
'
The tubes may be applied to any kind of boiler with one or more flues or
fire-boxes, whether such boiler be placed horizontally, vertically, or in any
other position, and whether the said flues or fire-boxes be circular, oval, or
otherwise.

page_text: DESCRIPTION OF DRAWINGS.
Figure 1 of the accompanying Drawing shows a side elevation, and
Figure 2 a longitudinal section of a flue tube for steam boilers constructed
according to our improvements; Figure 3 shows a longitudinal section, and
Figure 4 an end view of a single flue boiler with the improved tubes applied
in position, while Figure 5 shows an end view of a double flue boiler similarly
fitted with the improved diagonal tubes.
a, a, is the water flue tube having a flange b, b, at either end, serving to
connect the same to the boiler flue or fire-box, as the case may be; the
ends c, c, of the tube instead of being at right angles thereto we make at an
oblique angle to the centre line of the said tube. In this manner the tube when
placed in the flue will be in such position that a line d, d, drawn as shown in
red through its centre from the edge of one flange to the opposite edge of the
other flange, will be at about a right angle to the centre line e, e, of the boiler
flue f, or slightly inclining thereto in the same direction as the cross or
diagonal tube. Tubes fitted in this manner possess the advantage of being
readily passed into the flue, and of being fixed or removed at any time for the
insertion of new tubes or otherwise without interfering with the flues in which
they are placed whatever the kind of boiler in which they are applied.
It will be understood that tubes constructed as described may be made of
round, square, oval, or any other section, the flanged ends being formed at an
oblique angle as described, so as to give the diagonal tubes the desired
inclination in the flue for facilitating their placing and removal.
Having described the nature of our Invention and the manner of per-
forming the same, we declare that what we claim as our Invention to be
protected by the herein-before in part recited Letters Patent is, the improved
mode of fitting the diagonal tubes in the flues of Cornish and other steam
boilers, as herein-before described and represented is the Drawings annexed.
In witness whereof, we, the said William Wilson Wood and John
. Wood, have hereunto set our bands and seals, this Fifth day of
December, in the year of our Lord One thousand eight hundred and
WILLIAM WILSON WOOD. (L.S.)
JOHN WOOD.
(L.S.)