Nurunnabi National Institute of Textile Engineering & Research

1. Nurunnabi
Lecturer,Textile Engineering
National Institute of Textile Engineering & Research

2. Why Called Tappet?

3. Why Called Tappet?

4. Why Called Tappet?

5. Tappet is a type of cam to which a rotary motion is given for the purpose of producing
reciprocating motion in rods and levers by sliding contact.
Why Called Tappet Loom?
Loom a hand-operated or power-driven apparatus for weaving
fabrics(Woven Fabric)

6. Cam vs Tappet - What's the
difference?
Cam: a rotating or sliding piece (such as an eccentric wheel or a cylinder with an
irregular shape) in a mechanical linkage used especially in transforming rotary
motion into linear motion or vice versa
Tappet. : a lever or projection moved by some other piece (such as a cam) or intended to tap or
touch something else to cause a particular motion.

7. Various Parts of a Tappet Loom
A. weaver’s beam or loom
beam
B. warp threads (ends,
sheet form)
C. back rest or bearer
D. lease rods
E. “shed”
F. healds
G. reed
H. fell of cloth or beat-up
point
J. shuttle
K. breast beam
L. cloth take-up roller
M. tug bar
N. cloth roller
O. tappets
P. tappet treadles, with anti-friction bowls
R. treadle fulcrum
S. roller-top, heald reversing motion
T. rocking rail, or shaft
U. sley sword
V. crank arm
W. sley
X. top shaft
Y. bottom shaft

8. Weavers Beam/Back Beam/Warp
Beam
The warp beam, which holds the lengthwise yarns, is located at the back of the machine and is
controlled so that it releases yarns to the weaving area of the loom as needed.

9. Whip roll/Back rest
This is guide roller which directs the warp threads on their way to the lease rods and heddles.

10. Lease Rod
Another guiding device it is for the warp yarns. These are two sorts of wooden or glass rods
set between the whip rolls and the heddles.
Alternating warp threads can be kept separate by passing over and under these rods.

11. Drop Wire
Parts of a warp stop motion. Warp yarn passed through drop wire called pinning.
No of warp yarn=no of drop wire

12. Heald frame/Heald shaft/Heald
To Shed formation. Shed is a dividation of warp threads into two
equal/unequal parts.

13. Shuttle
To carry out weft yarn/pirn package.

14. Shuttle Box
Shuttle box is the housing for the shuttle and is made of wood. It has a picker
and a spindle. It may also accommodate the picker without spindle. The top
and side of the shuttle box unto the sley race are open. The shuttle dwells
inside the box for the intermediate period between two successive picks.

15. Reed
This is inevitably a combination made up of steel wire rods set vertically in a frame. The spaces
between the wires are known as splits or dents and are kept even and parallel. This is the first
function of reed.
Its second function is to feed the filling thread into position. To do this it has to move in a back and
forth motion.

16. Sley
The part of a loom mechanism in which the
reed is fixed and which moves the reed for
ward to beat up the weft.

17. Picker
Picker is a piece made either of synthetic material or leather. Picker may be
placed on a grooves or spindle in the shuttle box. Picker is used to drive the
shuttle from one box to another. While entering the box it also sustains the
force of the shuttle.

18. Buffer
Usually, the buffer has a hollow cylindrical shape formed by convolutely winding a leather sheet.
object of the invention is to provide a buffer which will withstand the impact of
the picker stick without substantial deformation and loss of flexibility.

19. Tample
Control Fabric Width

20. Front Rest/Breast Beam
The bar his is, at the front of the loom over which the cloth passes on its way to the cloth
roller

21. Take up roller/Emary roller
To take down fabric from weaving zone

22. Weaving Zone
Where Shedding, Picking & Beat up is done

23. Cloth Roller
It is located at the front of the loom, hold the completed fabric.

24. Shaft
Crank Shaft
Bottom Shaft
Counter Shaft

25. Primary Motion of a loom

26. Secondary Motion
Take up motion
Let off motion

27. Tertiary Motion
1.Warp stop motion
2.Weft stop motion
3.Warp protector motion
4.Fasr reed motion
5.Loose reed motion
6.Temple motion
7.Box motion etc

28. THANK YOU