Title of Invention

A TOOL USED FOR SAFE AND EFFICIENT HANDLING OF SAMPLES DURING POLISHING

Abstract The present invention relates to a tool used for safe and efficient handling and polishing of small samples/articles by moving silicon carbide paper during polishing operation which consists of a hollow cylindrical metal body having two ends (1,2), a first cut is made on the back side of the tool and termed as the back cut (5) and a second cut is made on the front side in between the two ends (1,2) of the tool and termed as the front cut (4) wherein length of the front cut (4) is a little bigger than the length of sample wherein the length of tool as well as length of the sample/article is measured along the axis of the tool and length of the back cut (5) is along the length of the tool disposed along axis of the tool end wherein the width of the front cut (4) is bigger than the width of the sample and the width of the back cut (5) is a little less than the width of the sample so that a part of the sample/article is pressed through the back cut (5) against the moving silicon carbide paper but the sample/article as a whole does not come out of the back cut (5) wherein the width of the front cut (4) and the width of the back cut (5) as well as width of the sample is measured perpendicular to the axis of the tool.
Full Text The invention relates to a tool used for safe and efficient handling of
samples (articles) during polishing.
Back ground of invention
Very often small articles are needed to be polished and polishing are
carried out with fine grade silicon carbide paper. It is very difficult to
hold these small articles in hand and polish them. Very often the
articles slip off the fingers and get thrown away. The skin of the
fingers gets chopped off by the rotating Silicon Carbide paper
resulting in injury to the operator. The Silicon Carbide paper also
gets torn off due to the improper handling of the article while
polishing.
For determination of oxygen in steel by instrumental method, sample
preparation is very important and critical to attain Consistent, reliable
and reproducible oxygen readings. The articles/samples used for this
purpose are small and are of the size of about 3 to 5 mm dia, and 6 to
8 mm length and they are made by , machining.

These Samples/articles are then polished with fine grade silicon carbide paper
with water cooling and are kept in acetone prior to the determination of oxygen
in order to avoid surface oxidation. Proper and uniform polishing of such small
sample/article is a great problem but is very important in the process of
determining of the oxygen contained in steel by instrumental method.
Therefore preparation of highly polished sample/article is very important for
the said instrumental process and the process and tool used for the said
preparation must be very safe and effective.
Prior art
In the existing method, the small article is held with the fingers against the
rotating fine grade Silicon Carbide paper and the problems arrived already
discussed, ante.
Holding the sample with forceps or pliers while polishing did not solve the
problems since proper and uniform polishing could not be done


and the samples were frequently slipping and dropping off. It takes
more time to complete the polishing.
Objective of the invention
In order to remove all the problems and difficulties of the existing
system of polishing small articles and to get proper and uniform
polished samples or articles in a shorter time, we have developed the
present invention. The present invention is a tool used during
polishing with rotating fine Silicon Carbide Paper. The process using
the invented tool wiU produce better and uniformed polished articles
or samples at faster rate. Polishing of the sample is very important in
determination of oxygen in steel by instrumental method. So the
present invention is very useful in industry and industrial process.
Advantages
The following advantages are derived by using the invented tool.
a) The quality of the polishing has been improved. The surface
finish obtained is much better compared to the earlier method.

b) There is no scope of finger injury of the operator thus improving the overall
safety of this activity.
c) Sample or article loss due to samples slipping from hand and thrown off has
been reduced.
d) The time taken for the preparation of the sample or article is less compared
to the earlier method.
The tool can be made from easily available raw materials.
Summary of the Invention
The present invention is provided with a tool used for safe and efficient
handling and polishing of small samples/articles by moving silicon carbide
paper during polishing operation consists of a hollow cylindrical metal body
having two ends, a first cut is made on the back side of the tool and a second
cut is made on the front side in between the two ends of the tool wherein
length of front cut is a little bigger than the length of sample wherein the length
of tool as well as length of the sample/article is measured along the axis of the
tool and length of the back cut is along the length of the tool disposed along
axis of the tool end wherein the width of front cut is bigger than the width of
the sample and the width of the back cut is a little less than the width of the
sample so that the sample/article which is pressed against the moving silicon
carbide paper does not come out of the back cut wherein the width of the front
cut and the width of the back cut as well as width of the sample is measured
perpendicular to the axis of the tool.
Detailed Description of the Invention
The invention is described in detail with reference to the accompanying
drawings.
Fig. 1 - shows the front view of the tool
Fig.2 - shows the top view of the tool.
Fig.3 - shows the section view of the tool.
Fig.4 - vertical view of the tool, (photograph)
Keeping the tool upright
Fig.5 - vertical view of the tool from other side.
Keeping the tool upright (photograph)

Fig.6 - shows the placement of the samples inside
Tool for polishing
Fig.7 - shows the polishing operation of the sample.
Now the invention will be described with reference to the figures.
The tool of the present invention is a hollow cylindrical body made of hard
metal having two ends (1.2) as shown in the drawings. On the back side of the
tool a cut (5) is made all along the length of the body having two sides (7) as
shown in Fig (4). On the front side of the tool another cut (4) is made just
opposite of the cut (5) on the back keeping a portion uncut on the two ends (1,
2) of the tool, as shown in figs (1,2 and 5). The width of back cut is little less
than the width of the sample/article to be polished so that the sample may not
go out through the cut (5) and the width of front cut (4) is made a little bigger
than the width of the sample/article so that the sample may be easily pass
through the front cut. During operation, the sample/article is to be put into the
tool through the front cut (4) and a part of the sample/article will come out of
the back cut (5) but the sample/article as a whole does not come out of the
back cut (5). Size of

the tool is such that it can be held easily with the fingers of the operator by one hand
and the sample/article can be pressed by the fingers of the other hand. The polishing is
done by putting the tool with the sample/article inside the tool, against the rotating fine
grade silicon carbide paper by the fingers of the one hand of the operator and pressing
the sample/article by the fingers of the other hand as shown in the figs (6 and 7). The
space inside the tool is sufficient for the sample/article so that it can rotate inside the
tool. There will be no chance of slipping out of the sample, operation is safe, better and
uniform polishing is achieved and the rate of polishing is very fast. Though the tool is
simple but it gives great and many advantages.

WE CLAIM:
1. A tool used for safe and efficient handling and polishing of small
samples/articles by moving silicon carbide paper during polishing
operation which consists of a hollow cylindrical metal body having two
ends (1,2), a first cut is made on the back side of the tool and termed
as the back cut (5) and a second cut is made on the front side in
between the two ends (1,2) of the tool and termed as the front cut (4)
wherein length of the front cut (4) is a little bigger than the length of
sample wherein the length of tool as well as length of the sample/
article is measured along the axis of the tool and length of the back
cut (5) is along the length of the tool disposed along axis of the tool
end wherein the width of the front cut (4) is bigger than the width of
the sample and the width of the back cut (5) is a little less than the
width of the sample so that a part of the sample/article is pressed
through the back cut (5) against the moving silicon carbide paper but
the sample/article as a whole does not come out of the back cut (5)
wherein the width of the front cut (4) and the width of the back cut
(5) as well as width of the sample is measured perpendicular to the
axis of the tool.

2. A tool as claimed in claim 1 wherein the size of the sample/article is in
between 3 to 5 mm in width and 6 to 8 mm in length and the length of
the tool is such that it can be conveniently held by the fingers of the
operator by one hand and the sample/article can be pressed by the
fingers of the other hand.
3. A tool as claimed in any of the claims 1 and 2 wherein the space inside
the tool is sufficient for sample/article so that the sample/article can
move/rotate inside the tool.
4. A process for polishing the sample/article of the size of 3 to 5 mm in
width and 6-8 mm in length using the tool as claimed in any of claims
1 to 3.
5. A tool used for safe and efficient handling and polishing of small
sample/article as substantially described in the specification and
illustrated in the accompanying drawing.


The present invention relates to a tool used for safe and efficient handling and
polishing of small samples/articles by moving silicon carbide paper during
polishing operation which consists of a hollow cylindrical metal body having
two ends (1,2), a first cut is made on the back side of the tool and termed as
the back cut (5) and a second cut is made on the front side in between the two
ends (1,2) of the tool and termed as the front cut (4) wherein length of the front
cut (4) is a little bigger than the length of sample wherein the length of tool as
well as length of the sample/article is measured along the axis of the tool and
length of the back cut (5) is along the length of the tool disposed along axis of
the tool end wherein the width of the front cut (4) is bigger than the width of
the sample and the width of the back cut (5) is a little less than the width of the
sample so that a part of the sample/article is pressed through the back cut (5)
against the moving silicon carbide paper but the sample/article as a whole
does not come out of the back cut (5) wherein the width of the front cut (4) and
the width of the back cut (5) as well as width of the sample is measured
perpendicular to the axis of the tool.

Documents:

01192-kol-2006 assignment.pdf

01192-kol-2006 claims.pdf

01192-kol-2006 correspondenc others.pdf

01192-kol-2006 description(complete).pdf

01192-kol-2006 drawings.pdf

01192-kol-2006 form1.pdf

01192-kol-2006 form2.pdf

01192-kol-2006 form3.pdf

01192-kol-2006-correspondence_1.1.pdf

01192-kol-2006-correspondence_1.2.pdf

01192-kol-2006-correspondence_1.3.pdf

01192-kol-2006-drawings-1.1.pdf

01192-kol-2006-form-1-1.1.pdf

01192-kol-2006-form-9.pdf

1192-kol-2006-abstract.pdf

1192-kol-2006-amanded claims 1.1.pdf

1192-KOL-2006-AMANDED CLAIMS.pdf

1192-kol-2006-amanded pages of specification 1.1.pdf

1192-KOL-2006-AMANDED PAGES OF SPECIFICATION.pdf

1192-KOL-2006-CANCELLED PAGES.pdf

1192-kol-2006-claims 1.1.pdf

1192-kol-2006-correspondence 1.1.pdf

1192-kol-2006-correspondence 1.2.pdf

1192-kol-2006-correspondence.pdf

1192-kol-2006-correspondence1.3.pdf

1192-kol-2006-description (complete) 1.1.pdf

1192-KOL-2006-DESCRIPTION (COMPLETE).pdf

1192-kol-2006-drawings 1.1.pdf

1192-KOL-2006-DRAWINGS.pdf

1192-kol-2006-examination report.pdf

1192-kol-2006-form 1 1.1.pdf

1192-KOL-2006-FORM 1.pdf

1192-kol-2006-form 18.pdf

1192-kol-2006-form 2 1.1.pdf

1192-KOL-2006-FORM 2.pdf

1192-kol-2006-form 3.pdf

1192-kol-2006-form 9.pdf

1192-kol-2006-gpa.pdf

1192-kol-2006-granted-abstract.pdf

1192-kol-2006-granted-claims.pdf

1192-kol-2006-granted-description (complete).pdf

1192-kol-2006-granted-drawings.pdf

1192-kol-2006-granted-form 1.pdf

1192-kol-2006-granted-form 2.pdf

1192-kol-2006-granted-specification.pdf

1192-kol-2006-others 1.1.pdf

1192-KOL-2006-REPLY TO EXAMINATION REPORT.pdf

1192-kol-2006-reply to examination report1.1.pdf


Patent Number 248331
Indian Patent Application Number 1192/KOL/2006
PG Journal Number 27/2011
Publication Date 08-Jul-2011
Grant Date 05-Jul-2011
Date of Filing 07-Nov-2006
Name of Patentee TATA STEEL LIMITED
Applicant Address JAMSHEDPUR 831001, INDIA
Inventors:
# Inventor's Name Inventor's Address
1 K.N. UDPA SCIENTIFIC SERVICES, TATA STEEL LIMITED JAMSHEDPUR 831001, INDIA
2 SUNIL KUMAR SCIENTIFIC SERVICES, TATA STEEL LIMITED JAMSHEDPUR 831001, INDIA
PCT International Classification Number G01N1/32
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA