Do-It-Yourself Fruit Picker Using Thread Clipper Scissor

Do-It-Yourself : Fruit Picker Using Thread Clipper Scissor
Manohar M. Hegde
https://www.youtube.com/watch?v=a4rRT5GlX_Q

Why Make it Yourself ?
Fruits come in various sizes and shapes,
and it is difficult to find one single tool
in the market which can do picking of all
types of fruits. Moreover, harvest season
for any one variety of fruit lasts only for
a few weeks at the most. Hence it is not
economical for fruit growers, who grow
many different types of fruits, to buy
readily available tools in the market.
Fruit growers can make a fruit picker
themselves, without much effort, using
easily available common and
inexpensive items.

What Kind of Scissors Are Suitable To Make This?
Not SuitableSuitable

Items required
1. Thread Clipper Scissor, length approx.
120-130 mm.
2. PVC pipe, outside dia 22 mm,
length as required (Choose
the pipe diameter such that
D-d = 0.2 to 0.5 mm, where
‘D’ is inside dia of neck of the
PVC reducer, and ‘d’ is the
outside dia of the pipe)
3. Screw, M3 x 30 mm long,2 nos,
along with nuts

5. PVC reducer, size : smaller side inside dia
(‘D’) – 22 mm , bigger side inside dia – 29
mm, Length - 44 mm
6. Steel curtain rod pipe, corrugated,
size : inside dia - 25mm , length –
110mm, or, length to suit user’s grip.
7. Steel cable, dia of cable – 1 mm approx.,
(used commonly in brake system of
bicycle, auto-rikshaw).Take the longest
available in the market (3-4 meters) ; cut
and use as per the requirement.
8. Soft and flexible steel wire, size 0.5mm
to 0.8mm (used commonly for tying
barbed wire to the fence pole)
Items required (cont’d )

9. General purpose elastic cords
(used as a tension spring)
10. Thin walled plastic sleeve,
inside dia 3.5 to 4.0 mm. ( ball point pen
empty re-fills can be used)
11. Steel or Aluminium tubes, size :
inside dia 2.5 to 3.5 mm, length as
required. (can be taken from discarded
bicycle front brake cables)
12. Hair Pins (2 Nos),75 - 85 mm length

14. Structural Adhesive (Example : ARALDITE)
13. Adhesive (Example : FEVICOL)
15. Safety Pin (small sized, 1 No )
16. Ballpoint pen metal tip (1 No), cut
to approx. 5 mm length
Do-It-Yourself : Fruit Picker From Thread Clipper Scissor

Tools required
1. Paper cutting knife
5. A pair of Cutting pliers
4. Steel rod, 3 - 4 mm
dia,100 - 150mm long
3. Files(flat, round, etc)
2. Screw driver

Tools required (cont’d )
6. A pair of scissors
9. Gas Stove as a source of flame
8. Soldering Iron, Solder alloy and flux
7. Emery Paper
In addition to the above, Hacksaws – big
and small sized – can also be useful.

Steps in Making The Fruit Picker
1. Check and Inspect the Thread Clipper Scissor
2. Check and Inspect the PVC reducer
1.2 Modify the Thread Clipper Scissor to enable mounting
1.1 Mark the Thread Clipper Scissor to enable modifying
2.2 Mark the PVC reducer... hints for marking
2.1 Mark the PVC reducer to enable modifying
2.3 PVC reducer... dimensions for marking
2.4 PVC reducer... after modification
2.5 PVC reducer... correction after cutting
3. Making of Bell crank Lever…material

5. Modify the blades of the Scissor
5.1 Modify the blades of the Scissor…clamping method
5.2 Modify the blades of the Scissor…checking
3.1 Making of Bell crank Lever…marking the mould base
3.2 Making of Bell crank Lever…cutting the mould base
3.3 Making of Bell crank Lever…preparing the mould
3.4 Making of Bell crank Lever…molding
4. Assemble the Scissor in the PVC Reducer body
4.1 Assemble the Scissor …inserting the Steel wire
4.2 Assemble the Scissor …tying down the Scissor

10. Assemble the Steel pipe
11. Assemble the Cable
12. Assemble the Elastic Cord
8. Prepare the Steel pipe
9.1 Prepare the Cable…determine the Cable length required
9. Prepare the Cable…soldering upper end of the Cable
9.2 Prepare the Cable…soldering lower end of the Cable
6. Assemble the Bell crank Lever in the PVC Reducer
7. Prepare the PVC pipe…upper end
7.1 Prepare the PVC pipe…lower end

1. Check and Inspect the Thread Clipper Scissor
126 mm
Note : Smaller length scissors can also be used.

1.1. Mark the Scissor to enable modifying
Make markings on one side as shown
Approximate positioning of scissor in the PVC Reducer body

1.2 Modify the Scissor to Enable Mounting
Make 2 Holes, 2 - 2.5 mm dia as shown, using steel nail and hammer
Note : It is easier to make the holes, if the scissor is opened temporarily and
spread as shown

2. Check and Inspect the PVC Reducer
22
44
29

2.1 Mark the PVC Reducer to Enable modifying
VIEW FROM LEFT SIDE VIEW FROM FRONT
VIEW FROM REAR
VIEW FROM RIGHT SIDE
Note : Use permanent marker pen to make the markings

2.2 Mark the PVC Reducer… Hints For Marking
Paper strip 28 mm X 7 mm Paper strip 28 mm X 5 mm

2.3 PVC Reducer… Dimensions for Marking
VIEW FROM REAR
28
5
8
(3)
(8)
HOLE
DIA
3 mm
CUTOUT
28
6
7
HOLE
DIA
3 mm
CUTOUT
(5)
(8)(6)
(7)
(8)
3 CUTOUT
14
8
(8)
CUTOUT
14
8
12

2.4 PVC Reducer...After Modification
VIEW FROM REAR
Note : By running a thin heated metal strip along the markings, cut-outs can be easily made.
Use hot round wire for making holes. Finish the rough edges using a flat file

2.5 PVC reducer… Correction After Cutting
Note : If necessary, make local corrections in the cut-out shapes using files (flat /round)
while assembling the Scissor, so that the Scissor fits properly in the PVC Reducer

3. Making of Bell crank Lever (From Non-Metallic Material)
Note : This can be prepared either by cutting 5-6 mm thick laminated electrical insulator
boards (Bakelite, Phenolic Bonded, Epoxy Bonded ,etc., commonly available in electrical
shops) using appropriate tools, or, can be moulded using structural adhesives like Araldite
“ Caution : It is advised NOT TO make this from metal, as otherwise there is a
likelihood of user getting electrical shock when the picker is used in the vicinity of
uncovered electrical power conductors. “

Point X mm Y mm
1 5 0
2 30 0
3 39 1
4 39 6
5 30 6
6 18 9
7 12 14
8 10 18
9 8 28
10 0 28
11 0 4
A 6 7
B 4 24
Step-1. Mark points 1 to 11,
‘A’, and ‘B’ on a graph paper as
per the dimensions given in
the table.
Step-2. Join the points to form
a closed shape.
Step-3. Cut along the line to
get the required shape.
3.1 Making of Bell crank Lever… Marking The Base

3.2 Making of Bell crank Lever… Cutting The Mould Base
Step-1. Using the shape cut on the graph
paper as a template, mark the shape on a 2 or
3 mm thick cardboard. (Make sure that mark
for points ‘A’ and ‘B’ are retained)
Step-2. Cut the card board to the same shape.
Step-3. Mark points A and B (if not retained)
Step-4. Make 2 holes, one of 3mm (point ‘A’)
and another of 2 mm (point ‘B’)
B
A

3.3 Making of Bell crank Lever...Preparing The Mould
Step-1. Use small paper rolls to fix the metal
tubes (diameter 2.5 to 3mm, and 1.5 to 2 mm;
length about 5mm),as shown. Do not push the
metal tubes inside the card board.
Step-2. Paste a thick paper around the shape,
about 2 layers, using adhesive like Fevicol. Keep
the depth of the mould about 5mm
Step-3. Keep a piece of safety pin on the longer
side of the mould. This will act as a re-
inforcement in the body after casting

3.4 Making of Bell crank Lever…Molding
Step-1. Mix the two elements of a good
structural adhesive (example ARALDITE) on a
piece of paper.
Step-2. Pour slowly into the mould, making
sure that all the nooks and corners of the
mould cavity are properly filled-up.
Step-3. Allow the adhesive to solidify.
Step-4. The paper wall around the moulded
shape, as well as the paper rolls inside the
two small metal tubes (now embedded into
the adhesive matrix), can be easily removed
by keeping the bell crank in water for some
time, and then scraping. Inside of the holes
can be cleaned and cleared by using sharp
metal pointer / large needle.
Step-5. Remove the sharp edges using small
flat file.

4. Assemble the Scissor in the PVC Reducer body
Insert the Thread Clipper Scissor in the slots from the bladed end.

4.1 Assemble the Scissor…Inserting the Steel Wire
Step-3. Twist tie on the sideStep-1. Take a flexible
Steel wire, 80-90 mm long
Step-2. Run the Steel wire
through the holes provided on
the leg of the Scissor, bring the
ends out through the slots

4.2 Assemble the Scissor…Tying Down the Scissor
Step-4. Twist the Steel wire tightly and cut the excess length.

5. Modify the Blades of The Scissor
Attach the Hair Pins on the blades using a structural adhesive like Araldite
Note : One Clip should be attached on one side of the Scissor, and the other Clip on the other
side of the scissor. This will ensure smooth sliding the blades even after the Clips are
attached

5.1 Modify the Scissor ... Clamping Method
Note : The Hair Clips should be held in position firmly for sufficient duration (sometimes up to 24
hours) for complete setting. Commonly available paper clips can be used for this purpose.

5.2 Modify the Blades of the Scissor…Checking
After the Hair Clips are firmly attached to the blades, move the blades by fingers to check for
smooth movement and complete closure.

Do-It-Yourself : Fruit Picker From Thread Clipper Scissor
6. Assemble the Bell crank Lever in the PVC Reducer
Insert the Bell crank Lever through the side cut-out (left picture). Then insert the screw through
the side holes in the PVC Reducer and hole in the Bell crank Lever. Secure with Nut
NOTE : The final assembly of Bell crank Lever has to be done only after the cable has been
attached to the Bell crank Lever and assembly of the Cable In the PVC pipe.
View from the Top View from the Bottom

7. Prepare the PVC pipe…Upper End
HOLES
DIA
3 mm
6
6
83
12 17
17
7
Make cut-outs, slot and holes as shown, using melting out method
and cutting with small hacksaws

7.1 Prepare the PVC pipe…Lower End
150 mm
Hole 4mm Dia
30 mm
15 mm
4
2 Slots,
30mm Long,
4mm Width
(on both
sides)
15 mm
Make hole and slots as shown, using melting out method
and cutting with small hacksaws

8. Prepare the Steel pipe
HOLES
DIA
3 mm
(both
sides)
110 mm
25mm(ID)
10 mm
Cut the pipe to the required length using hack saw, and make holes
using hammer and nail, or hand drill / drilling machine

9. Prepare the Cable…Soldering Upper End of the cable
Solder Joint
Metal Tube
( 3 mm dia,
length 7-
8mm)
Create a loop by taking the cable end through the hole provided
in the Bell crank Lever, and insert the cable into the metal tube.
Create a solder joint between the cable end and metal tube,
using soldering iron , or , simply inserting soldering alloy
inside the tube and heating over a flame.

9.1 Prepare the Cable…Determine the cable length required
Total Length of Cable Required
Lower End –Marked up for soldering Upper End –Soldered
Badminton racket string can be used for taking more
accurate measurement of cable length required.
Marking
Note : Before marking on the cable, hold the cable taught between the screw at the bottom ,
and the Bell crank Lever, so that, there is no cable slackness during the actual operation
Screw at the
end of the slot

9.2 Preparing the Cable…Soldering Lower End of The Cable
Solder Joints
Metal Tube
If necessary, the
Cable length can be
increased by
soldering and joining
two cable pieces.
Create a loop at the lower end of the Cable, insert in the metal tube as per the marking
made ,and join the cable to the metal tube by soldering, or by heating over a flame.

10. Assemble the Steel pipe
Step-1 : Assemble
the Steel pipe on
the PVC pipe and
insert the screw
partially.
Step-2 : Now on the
screw inside the PVC
pipe, assemble the
plastic sleeve, elastic
cord, and the lower
end of the Cable as
shown.
Step-3 : Push the
screw further until it
comes out of the hole
on the other side of
Steel pipe. Secure it
with nut.
The view inside the
PVC pipe after the
assembly of the
Steel pipe.

11. Assemble the Cable
Step-1 : Mount the
PVC Reducer
assembly on the
upper end of the
PVC pipe. Insert the
lower end of the
Cable through the
top slot of the PVC
pipe.
Step-2 : Push the
Cable completely
down into the PVC
pipe
Step-3 : Insert the free
end of the Bell-crank
Lever into cut-out of
the PVC Reducer, and
push it until it enters
the gap between one
leg of the Scissor and
the wall of the
Reducer
Step-4 : Insert the
screw and secure with
Nut (Now, the screw is
holding the PVC
Reducer body, the PVC
pipe and the Bell crank
Lever together.)

12. Assemble the Elastic Cord
Step-1 : Take a thin
string, about 300mm
long.
Step-2 : Insert the string from the
middle hole (shown on the left side)
and allow it to come out from the end
of the PVC pipe (on the right side).
Step-3 : Pull the elastic
cord, which was hung
around the screw, out.
Step-4 : Tie the end of the string to
the elastic cord.
Step-5 : Pull the other end
of the string until the
elastic cord is visible.
Step-6 : Pull the cord out and
insert a small piece of
plastic, about 12 mm long,
into the loop of the visible
elastic cord.

Now The Fruit Picker is Ready For Use
https://www.youtube.com/watch?v=0YsDtfSR-Q0

Do-It-Yourself Fruit Picker Using Thread Clipper Scissor

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