FIELD OF INVENTION
[001] The present invention narrates to a new marking device for
final marking of the terminal tube ends of water wall panels. More
particularly, the invention relates to a new marking device with
alignment support at the outer surface of a tube for accurate
marking. The invention further relates to avoid the occurrence of
marking errors during the marking at terminal end tube for edge
preparation work, thereby conforming the accuracy of the product,
so that the cycle time can be reduced, quality of the marking can be
improved to simplified method in new marking device.
BACKGROUND AND THE PRIOR ART
[002] The water wall panel manufacturing undergoes various
operations like rework welding, panel diagonal correction, marking,
TIG joint feeding, attachment fit up, edge preparation, stress
relieving and hydraulic test. Marking of end cutting dimension is an
important step, once the cutting is done with the wrong dimension,
it cannot be corrected until we feed it with another TIG joint. The
tube end dimension is so important, because it should match with
another joint in the next matching panel at site. In the elevated
regions the correction is not quit easy. It will take more cycle time
to rectify the rework.

[003] At least three manpower is essential for marking work at
terminal bend tubes. One manpower is required for measuring the
vertical distance of the terminal bend tube from the horizontal tube
centre. 3-meter measuring tape is used for marking the vertical
dimension. Another manpower is necessary to hold the straight
edge in line with centre of the horizontal tube. The centre line of
the horizontal tube is marked by applying the marking media
(chalk powder) on the outer side surface of the tube. Then the
centre line is marked by scribing the straight edge on the
horizontal tube side surface. Another manpower is used for
positioning the measuring tape at the centre of the horizontal tube
through the straight edge and the vertical terminal tube end
dimension is marked with help of try square and scriber.
Problem experienced in prior art
[004] Higher Cycle time: Since the dimensional marking is a
minute task, it needs to follow more procedures like identification
of centre line of the horizontal tube, deployment of straight edge,
3-meter measuring tape and try square. Coordination of all
workers and devices result in long cycle time and hence
productivity decreases.
[005] Operator’s fatigue: since cycle time for each terminal bend
marking is very high, the operator needs to hold all the devices in

unsafe and difficult position. Hence these factors result more
fatigue to the workers.
[006] Delayed Delivery to the Internal Customer: Due to higher
cycle time, it's difficult to meet scheduled work plan and deliver to
the customers in time.
[007] Thus, there was a need to simplify the making method of
terminal bend tube to overcome from the problems faced in the
existing marking method in terminal bend panels. So, it is
necessary to make the marking easier, to reduce the cycle time, to
reduce the fatigue of the workmen and to make the marking work
safer with less manpower.
[008] Extensive search has been made in internet and it has been
found that no such relevant patents found.
OBJECTIVES OF THE INVENTION
[009] It is therefore an object of the present invention to propose a
new device for marking in terminal bend tubes of water wall
panels.
[010] Another object of the present invention is to eliminate excess
manpower used for marking and also to make the marking work
safer with less manpower.

[011] Another object of the present invention is to provide a
simplified and less time consuming process for vertical tube
measurement and marking.
SUMMARY OF THE INVENTION
[012] The present invention provides a device and method for
measurement and marking of vertical terminal bend tubes in water
wall panels. As the prior method consumes more time for marking
and at least 3 manpower required for measurement and marking, it
is finally selected an idea that to design and develop the new
measuring and marking device simplification of the marking work.
[013] In an aspect, the device disclosed herein is comprising of a
graduated scale engaged in a scale sider.
[014] In an aspect, the proposed device further comprises a stock
along which the combination of the scale and the scale slider slide
along the length of the tube the device is placed whereupon. A
locking screw helps to fix the position of the slider on the stock. A
supporting unit is provided to place the device on the outer surface
of a horizontal tube.
[015] In an aspect, the device is positioned at a required place on
the horizontal tube and a centre line is marked on the outer surface
of the horizontal tube. Another mark is made on the surface of the

vertical bend tube and the dimension of the marked point on the
vertical bend tube from the centre line is measured with the aid of
the graduated scale embedded in the device.
[016] The factors considered while designing the device have
provision for measuring scale, flexible movement of device for easy
marking, self-aligning of tube centre to obtain the accuracy and user
friendly at vertical terminal bend tube in water wall panel
fabrication.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[017] The present subject matter would be described in greater detail
with reference to the following figures. It should be noted that the
description merely illustrates the principles of the present subject
matter. It will thus be appreciated that those skilled in the art will
be able to devise various arrangements that, although not explicitly
described herein, embody the principles of the present subject
matter and are included within its scope.
[018] The present invention will now be described more specifically
with reference to the following specification, as illustrated in the
accompanying drawings, in which like reference characters refer to
the same parts throughout the different figures and subsequently
incorporated in the subjoined claims. The drawings are not

necessarily to scale, emphasis instead being placed upon illustrating
the principles of the invention and in which:
[019] Figure 1 illustrates the engagement of multiple man power
during marking of terminal bend tube for edge preparation prior to
the present invention.
[020] Figure 2 illustrates the isometric view of the complete sketch
of the newly invented measuring and marking device (100) for
vertical terminal bend tube (2) marking as per the invention.
[021] Figure 3 illustrates different parts of the device (100)
separately.
[022] Figure 4 illustrates the real image of the developed device
(100).
DETAIL DESCRIPTION OF THE PREFERRED EMBODIMENTS OF
THE PRESENT INVENTION WITH REFERENCE TO THE
ACCOMPANYING DRAWINGS
[023] While the embodiments of the disclosure are subject to various
modifications and alternative forms, specific embodiment thereof
have been shown by way of example in the figures and will be
described below. It should be understood, however, that it is not
intended to limit the disclosure to the particular forms disclosed, but
on the contrary, the disclosure is to cover all modifications,

equivalents, and alternative falling within the scope of the
disclosure.
[024] The terms “comprises”, “comprising”, or any other variations
thereof used in the disclosure, are intended to cover a non-exclusive
inclusion, such that a device, system, assembly that comprises a list
of components does not include only those components but may
include other components not expressly listed or inherent to such
system, or assembly, or device. In other words, one or more elements
in a system or device proceeded by “comprises… a” does not, without
more constraints, preclude the existence of other elements or
additional elements in the system or device.
[025] It should be observed that the present invention resides
primarily in a novel and non-obvious combination of hardware
elements and method steps. Accordingly, these elements and steps
have been represented by conventional elements and steps in the
drawings, showing only those specific details that are pertinent to
the present invention so as not to obscure the disclosure with details
that will be readily apparent to those skilled in the art having the
benefit of the description herein.
[026] Prior to the present invention, engagement of at least three
manpower needed during measurement of terminal bend tube for
edge preparation is illustrated in Figure 1.

[027] The present invention discloses a novel device, referring
Figure 2, for measuring and marking of vertical terminal bend tube
(2) in water wall panel fabrication addressing the existing problem.
The invented device (100) comprises a graduated scale (5), a scale
sliding arrangement (6), a slide locking screw (7), a tube supporting
unit (8) and a stock (9) for measuring and marking the dimension of
vertical terminal bend tube (2).
[028] In an exemplary embodiment of the present disclosure, the
graduated scale (5) is provided for accurate measurement of the
tube (2) from the horizontal tube (10) centre line reference. Because
of this scale provision, there is no need to hold a 3-meter measuring
tape (1) manually by a person. Thus, the manpower requirement for
holding the 3-meter measuring tape (1) is eliminated.
[029] The scale sliding arrangement (6) is provided for easy sliding
during linear movement of the graduated scale (5) along the length
of the horizontal tube (10). Thus, holding of a straight edge (3) in
horizontal tubes (10) centre is avoided. Hence the manpower needed
to hold the straight edge (3) is also avoided.
[030] The slide locking screw (7) is used for locking the scale sliding
arrangement (6) in the required position.
[031] In an exemplary embodiment of the present disclosure, a tube
supporting unit (8) in designed for accurate positioning of the device

(100) in the horizontal tube (10) centre. It helps to position of the
device (100) exactly at the outer surface of the horizontal tube (10)
in the panel. So the accuracy in marking the dimension in the
vertical terminal bend tube (2) is ensured. The dimension of the
supporting unit (8) can be changed according to the dimension of
the horizontal tube (10).
[032] In an exemplary embodiment of the present disclosure, a stock
(9) is used along which the combination of scale slider (6) and the
graduated scale (5) slide to the required position along the axial
length of the horizontal tube (10). So the measuring and marking
device (100) disclosed herein performs the marking work with less
manpower and higher safety.
[033] In an exemplary embodiment of the present disclosure, the
graduated scale (5), the scale slider (6), the slide locking screw (7),
the tube supporting unit (8) and the stock (9) are separately
illustrated in Figure 3 (a)-(e) respectively. The real image of the
proposed device (100) is illustrated in Figure 4.
[034] The device is placed on the outer surface of a horizontal tube
(10) in the water wall panel with the aid of the tube supporting unit
(8). A mark is made with a marker on the vertical tube (2) outer
surface. The scale slider (6) is adjusted to fix the position of the
graduated scale (5) at required place and locked with the aid of the

slide locking screw (7). The required dimension on the vertical
terminal bend tube (2) is measured with the aid of the graduated
scale (5) from a reference centre line on the outer surface of the
horizontal tube (10). The required dimension is marked with a
scriber. The slide lock screw (7) is unlocked to remove the device
(100) from its position. The marked point is punched using dot
punch and hammer and the same procedure is repeated for the next
tube marking and measuring.
[035] Therefore, the design and development measuring and
marking device (100) increases the productivity with quick marking
time, and improves the product quality. The developed measuring
and marking device (100) for marking vertical terminal bend tubes
(2) eliminates the disadvantages of prior art.
[036] Although the present subject matter have been described in
language specific to package features, it is to be understood that the
present subject matter is not necessarily limited to the specific
features described. Rather, the specific features and methods are
disclosed as embodiments for the present subject matter. Numerous
modifications and adaptations of the method of the present
invention will be apparent to those skilled in the art, and thus it is
intended by the appended claims to cover all such modifications and

adaptations which fall within the scope of the present subject
matter.
[037] It will be understood by those within the art that, in general,
terms used herein, and especially in the appended claims (e.g.,
bodies of the appended claims) are generally intended as “open”
terms (e.g., the term “including” should be interpreted as “including
but not limited to,” the term “having” should be interpreted as
“having at least,” the term “includes” should be interpreted as
“includes but is not limited to,” etc.).
[038] It will be further understood by those within the art that if a
specific number of an introduced claim recitation is intended, such
an intent will be explicitly recited in the claim, and in the absence of
such recitation no such intent is present. For example, as an aid to
understanding, the following appended claims may contain usage of
the introductory phrases “at least one” and “one or more” to
introduce claim recitations. However, the use of such phrases
should not be construed to imply that the introduction of a claim
recitation by the indefinite articles “a” or “an” limits any particular
claim containing such introduced claim recitation to inventions
containing only one such recitation, even when the same claim
includes the introductory phrases “one or more” or “at least one” and
indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should

typically be interpreted to mean “at least one” or “one or more”); the
same holds true for the use of definite articles used to introduce
claim recitations.
[039] In addition, even if a specific number of an introduced claim
recitation is explicitly recited, those skilled in the art will recognize
that such recitation should typically be interpreted to mean at least
the recited number (e.g., the bare recitation of “two recitations,”
without other modifiers, typically means at least two recitations, or
two or more recitations).
[040] It will be further appreciated that functions or structures of a
plurality of components or steps may be combined into a single
component or step, or the functions or structures of one-step or
component may be split among plural steps or components. The
present invention contemplates all of these combinations. Unless
stated otherwise, dimensions and geometries of the various
structures depicted herein are not intended to be restrictive of the
invention, and other dimensions or geometries are possible. In
addition, while a feature of the present invention may have been
described in the context of only one of the illustrated embodiments,
such feature may be combined with one or more other features of
other embodiments, for any given application.
[041] It will also be appreciated from the above that the fabrication
of the unique structures herein and the operation thereof also

constitute methods in accordance with the present invention. The
present invention also encompasses intermediate and end products
resulting from the practice of the methods herein. The use of
“comprising” or “including” also contemplates embodiments that
“consist essentially of” or “consist of” the recited feature.
ADVANTAGE OF INVENTION
[042] The advantage of the present invention is that it proposes a
novel device for measuring and marking in terminal bend tubes of
water wall panels.
[043] Another advantage of the present invention is that it ensures
100% accuracy in marking work with the single manpower.
[044] Another advantage of the present invention is that it provides
a simplified process for vertical tube measurement and marking.
[045] Yet another advantage of the present invention is that it
eliminates excess manpower used for marking and also to make the
marking work safer with less cycle time.
[046] Yet another advantage of the present invention is that it
eliminates the fatigues of the person engaged during marking and
measuring the length of terminal bend tube.

WE CLAIM:
1. A device (100) for measuring and marking vertical terminal
bend tube at water wall panel, said device (100) comprises:
a graduated scale (5) with numerical instrumental line
markers at spaced intervals for measuring the longitudinal
dimension of a vertical terminal bend tube (2) adjoined to the
side of a horizontal tube (10);
a scale slider (6) engaging the graduated scale (5)
vertically for allowing linear movement of the graduated scale
(5) along the axial length of the horizontal tube (10);
a slide locking screw (7) on the outer surface of the scale
slider (6) for locking the scale slider (6) in a required position;
a stock (9) holding the scale slider (6) and the graduated
scale (5) for allowing the sliding of the combination of the scale
slider (6) and the graduated scale (5) along the length of the
horizontal tube (10); and
at least one supporting unit (8) at the end of the stock (9)
for positioning the device (100) at the outer surface of the
horizontal tube (10) in a panel.
2. The device as claimed in claim 1, wherein the graduated scale
(5) reading provides the measurement of the longitudinal

dimension of a vertical terminal bend tube (2) eliminating
requirement of a measuring tape (1) and a straight edge (3).
3. The device as claimed in claim 1, wherein the dimension of the
supporting unit (8) ensures proper holding on the outer surface
of the horizontal tube (10).
4. A method for measuring and marking vertical terminal bend
tube at water wall panel, said method comprises:
placing a device (100) on an outer surface of a
horizontal tube in a water wall panel with the aid of a tube
supporting unit (8) embedded at the end of a stock (9) of the
device (100);
marking a longitudinal dimension with a marker on the
outer surface of the vertical tube (2);
fixing the position of a graduated scale (5) embedded in
the device (100) at required place by adjusting its position
with the aid of a scale slider (6) sliding along the stock (9) and
having locking provision with a locking screw (7), wherein
sliding along the stock (9) results sliding of the scale (5) along
the axial length of the horizontal tube (10);
measuring the marked dimension with the aid of the
graduated scale (5);
marking said dimension with a scriber and punching
the marked point using a punch tool; and

removing the device (100) from its position with
unlocking the slide lock screw (7) for next measurement.
5. The method as claimed in claim 4, wherein measuring the
marked dimension with the aid of the graduated scale (5)
provides the longitudinal dimension of the marked point on the
outer surface of the vertical bend tube (2) from the spatial
reference line on the outer surface of the horizontal tube (10).