FIELD OF INVENTION
The invention relates to an improved pedal driven Sabai Grass Rope Making
Machine. More particularly the invention relates to an improved Sabai Grass Rope
Making machine which can be driven by leg and a single person can operate it
while feeding grass simultaneously.
BACKGROUND OF THE INVENTION
Various kinds of ropes are produced from plant origin like coir rope, Manila rope
and jute rope etc. Ropes are also made of many other materials. Sabai grass is
less popular. Sabai grass is a locally available and widely grown plant in most
parts of India. A type of rope known as Sabai grass rope is prepared from the
leaves of this plant in states of Orissa, West Bengal and Jharkhand. Sabai grass
rope is used for many purposes like weaving cots and for tying various objects
like logs of wood and straw on the roof. Sabai grass grows to a height of 1 to 1.5
meters. The leaves are cut and dried on the sun. The dried leaves are twisted
manually.
This is an age old tradition being practiced for more than two centuries. The rope
needs polishing before it is sold in the market. Traditional method of polishing
involves scratching on the tree trunk by the rope, and then being pulled by the
people standing around the trunk.
Prevailing state of the arts are:-
- Traditional hand driven twisting either used wooden Tukda or manually.
- Operation involves application of force to twist the grass by hand only with the
help of a timber piece.
This is a tedious and poorly effective method, which require a lot of efforts and
time and add substantially to the cost of production.

To overcome this, enfolding of grass for making rope is carried out on a bobbin.
It has a diameter according to latai and made of various materials like wood or
iron etc. The device is fitted at the centre of a shaft.
OBJECTS OF THE INVENTION
1. It is therefore an object of the invention to propose an improved pedal driven
Sabai Grass Rope Making Machine which is compact, sturdy, trouble free and
user friendly.
2. Another object of the invention is to propose an improved pedal driven Sabai
Grass Rope Making Machine which increases the output to a considerable extent
while reducing the fatigue of operator.
3. A Further object of the invention is to propose an improved pedal driven Sabai
Grass Rope Making Machine which maintains a uniform quality of output.
4. A still further object of the invention is to propose an improved pedal driven
Sabai Grass Rope Making Machine which makes the working condition
ergonomically safer than the traditional method.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
Figure 1 shows the perspective diagonal view of an improved pedal driven Sabai
Grass Rope Making Machine according to the invention.
Figure 2 schematic drawing of improved pedal driven Sabai grass rope making
machine.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE
INVENTION
When the pedal (17) is moved 'to and fro' by the foot, the 'to and fro' motion is
transmitted by the pedal rod (18) to the rotary motion of gear 1 (14). Pinion 5
(2) rotates through gear drives in a chain of power transmission from gear 1 (14)
to gear 3 (15) via intermediate pinion. Gear 7 (9) rotates because of gear drive
gear 3 (15) via intermediate shaft (18) and pinion. Gear 7(9) and rotating pipe
(6) are integral and rotate together.
Feed inlet (1) and similar conical pipes do not rotate.
A pipe is attached to Pinion 5 (2) which rotates in the Bearing A (3). This pipe
carries a guide vane (not shown in the figure) for twisting the leaf given in the
Feed inlet (1).
Bearing B (5) supports the Rotating pipe (6).
Bobbin (8) is mounted on the Rotating pipe (6). It is free to rotate on the
Rotating pipe. Due to frictional force the Bobbin (8) will rotate along with
Rotating pipe (6). The frictional force can be controlled by a spring (12). Holds a
Tightener belt (11) wound on the Groove on the bobbin (10).
Working of the machine.
Sabai grass leaves are fed in two streams through two Feed inlets (1). These are
conical pipes and these are stationery.
There are two Pinion 5 (2). These is a tube inside each pinion (not shown in the
figure). The tube carries inside a vane. The leaves are twisted when the tubes
rotate.
The tube inside the Pinion 5 (2) passes through the bearing and opens to the
Conical guide (4). The Conical guide (4) is stationery. There are two conical

guides, each receiving the twisted leaves coming through the tube inside Pinion
5(2).
The two streams of twisted leaves passes through a common conical guide and
enter inside the Rotating pipe (6). Inside the Rotating pipe (6) they form one
rope. The twisting continues because of the rotation of the Rotating pipe (6).
From the rotating pipe (6) of the rope comes out through an opening on the
side. It passes through Pin (13) and get wound on the Bobbin (8). The Pin (13)
is attached on the Latai (7). Latai (7) rotates along with the Rotating pipe (6).
Gear 7 (9), Latai (7) and Rotating pipe (6) are integral and rotate as one body.
The rope gets wound on the Bobbin (8). The rotational speed of the Bobbin (8)
and of the Rotating pipe (6) are different because of the winding of the rope on
the Bobbin (8), the streams of leaves fed at the Feed inlet (1) are sucked in by
the machine itself. Hence, the leaves are fed upto the vane inside the pipe inside
the Pinion 5 (2), it is then pulled in by the machine itself. The machine is stopped
after some time and the rope is taken out.

WE CLAIM:
1. An improved pedal driven sabai grass rope making machine comprising:
a frame structure (19);
a pedal (17) mounted on two pivot points;
a pedal rod (18) connected at one end with the pedal (17) and the other end connected
to the gear 1 (14);
a plurality of gears { Gear 1(14), Gear 3(15), Gear 7(9)} and pinions for transmitting
the drive;
a plurality of pinions {5(2)} for getting dives from Gear 3(15);
a gear 7(9) connected with rotating pipe (6);
a bearing B(5) for supporting the rotating pipes (6);
a bobbin (8) mounted on the rotating pipe (6);
a latai (7) disposed on the rotating pipe (6);
a plurality of pinions 5(2) having tubes inside each pinion and rotating on the bearing
A(3);
plurality of feed inlet (1) disposed on the entry side for receiving the sabai grass;
a plurality of conical guide (4) for receiving the sabai grass from the tubes within the
pinions 5(2);
a single conical guide disposed for entry of sabai grass into single passage before
entering into the rotating pipe (6);
characterized in that the sabai grass leaf after entering in two streams through feed
inlet (1) pass through the rotating tubes inside pinions 5(2), get twisted and
each twisted rope then enters the plurality of conical guides (4), passes through a
single conical guide and enter inside the rotating pipe (6) where the branch ropes are
twisted into a single rope, comes out through a passage, passes through a pin (13)
attached on the latai (7) and wound on the bobbin (8).

2. The sabai grass rope making machine as claimed in claim 1 wherein the rotating pipe
(6), Gear 7(9) and latai (7) are integral and rotate as single body.
3. The sabai grass rope making machine as claimed in claim 1 wherein a bobbin (10)
having a groove on it is mounted on the rotating pipe (6).
4. The sabai grass rope making machine as claimed in claim 3, wherein the groove in
the bobbin (10) is used for controlling the frictional force of bobbin (8) by a spring (12)
and a tightener belt (11) wound on the said groove.
5. The sabai grass rope making machine as claimed in claim 1 wherein the pipe (6) is
having a hole and vane for twisting of rope and exit of the twisted rope from the
rotating pipe (6).
6. The sabai grass rope making machine as claimed in claim 1 wherein the relative
speed between the bobbin (8) and the rotating pipe (6) cause the rope to be wound
over bobbin (8).
7. The sabai grass rope making machine as claimed in claim 1 wherein a speed
difference is created between the bobbin (8) and rotating pipe (6) by adjusting the
spring tension (12).
8. The sabai grass rope making machine as claimed in claim 1 wherein the rotating
pipe (6) is equipped with a hole for exit of twisted rope from the rotating pipe (6).
9. The sabai grass rope making machine as claimed in claim 1 where a pin (13) is
provided on the latai (7).

10. The sabai grass rope making machine as claimed in claim 1 wherein the feed inlet
(1), plurality of conical guide (4) and single conical guide are stationery.
11. The sabai grass rope making machine as claimed in claim 1 wherein the plurality of
pinions 5(2) rotate with the tubes inside them.
12. The sabai grass rope making machine as claimed in claim 1, wherein the tubes
inside pinion 5(2) carrier vane for twisting individual rope during rotation of the tubes.
13. The sabai grass rope making machine as claimed in claim (1) wherein the sabai
grass rope is sucked from feed inlet (1) by the force due to winding of rope in bobbin
(8). .
14. The sabai grass rope making machine as claimed in claim (1) wherein the sabai
grass is fed up to feed inlet.
15. The sabai grass rope making machine as claimed in claim 1 wherein the
intermediate shaft (18) is connected with fly wheel (16).

ABSTRACT

An improved pedal driven sabai grass rope making machine comprising:
a frame structure (19);
a pedal (17) mounted on two pivot points;
a pedal rod (18) connected at one end with the pedal (17) and the other end connected
to the gear 1 (14);
a plurality of gears { Gear 1(14), Gear 3(15), Gear 7(9)} and pinions for transmitting
the drive;
a plurality of pinions {5(2)} for getting dives from Gear 3(15);
a gear 7(9) connected with rotating pipe (6);
a bearing B(5) for supporting the rotating pipes (6);
a bobbin (8) mounted on the rotating pipe (6);
a latai (7) disposed on the rotating pipe (6);
a plurality of pinions 5(2) having tubes inside each pinion and rotating on the bearing
A(3);
plurality of feed inlet (1) disposed on the entry side for receiving the sabai grass;
a plurality of conical guide (4) for receiving the sabai grass from the tubes within the
pinions 5(2);
a single conical guide disposed for entry of sabai grass into single passage before
entering into the rotating pipe (6);
characterized in that the sabai grass leaf after entering in two streams through feed
inlet (1) pass through the rotating tubes inside pinions 5(2), get twisted and
each twisted rope then enters the plurality of conical guides (4), passes through a
single conical guide and enter inside the rotating pipe (6) where the branch ropes are
twisted into a single rope, comes out through a passage, passes through a pin (13)
attached on the latai (7) and wound on the bobbin (8).