Page 238 - CTS - Sewing Technology - TP - Volume - 2-0

SEWING TECHNOLOGY - CITS

Disadvantages

1 It uses a bobbin to provide the lower thread.
2 Bobbin can only contain a limited length of that thread.
3 Running out of thread is very poor, where a join is visually unacceptable.
4 Major problems occur on bobbin running, which involved loss of stitching.
5 Unsuitability for edge neatening. (Fig 3)

Fig 3

Safety of blind stitch machine
• This machine can only be used for the blind stich purpose.
• Other uses of this machine are not allowed. Any modification or conversion made on this machine must be
conformed with the safety standards and regulations. Precaution is necessary.
• For the safety of operators and services persons, please don’t open the cover of any electronic control boxes
of the motor or other devices and don’t touch any components inside to avoid electrical shock hazards.
• Please never operate this machine without belt cover, figure guard or any safety devices to avoid physical
injury.
Conclusion

Blind stitch machine is one of the important sewing machines in garment factory of making a complete garment.
This type of machine cannot be used for normal purpose. But for making a complete garment their importance
cannot be denied. Special care and sufficient knowledge is necessary for proper working. Otherwise faulty sewing
may be done.

Practice on operations of button hole machine
Objectives : At the end of this exercise you shall be able to
• identify the button hole stitching machine parts
• thread the button hole machine
• install and remove the bobbin case
• reduce the speed of the machine
• change the number of stitch length.

TASK 1: Identify the button hole stitching machine parts (Fig 1)
Machine parts
1 Thread tension disc.

2 Speed gear for changing the number stitches in buttonhole.
3 Bobbin winder.
4 Emergency stopper.
5 Bobbin winder.

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CITS : Apparel - Sewing Technology - Exercise 36 CITS : Apparel - Sewing Technology - Exercise 36