Name of the experiment: Study on lock stitch plain sewing machine
Introduction:
Introduction:
A sewing machine is a machine used to stitch fabric and other materials together with thread. Sewing machines were invented during the first Industrial Revolution to decrease the amount of manual sewing work performed in clothing companies. Lock stitch sewing machine is one of the important sewing machines among all the machines. The sewing machine has greatly improved the efficiency and productivity of the clothing industry.
Machine specification:
Brand name: JUKE
Model: JK5550
Origin: China
Machine Parts name:
1) Thread stand: Used for hold the thread package.
2) Spool thread guide: To guide the thread.
3) Eye thread guide:
4) Needle thread tension post: To control the tension of the thread.
5) Needle thread take-up lever: To pull the thread back, after each stitch.
6) Needle bar: To hold the needle.
7) Needle: To make a stitch.
8) Presser foot: To hold the fabric against foot dog's and give pressure according to fabric thickness.
9) Presser foot lifter: To lift the presser foot up and lower.
10) Throat plate: It is a static component which has slots for the foot dogs and a slot for a ` needle for zig-zag stitch.
11) Stitch density controller: To increase and decrease the stitch density per inch during sewing.
12) Feed dogs: To move a fabric forward by a distance equal to the stitch length.
13) Hand wheel: To raise and lower the needle and take up the lower thread from the bobbin.
14) Bobbin Winder: To wind the sewing thread automatically into the machine.
15) Bobbin: To hold the thread inside of the machine.
16) Bobbin cage: To hold the bobbin in the particular place of the machine.
Machine specification:
Brand name: JUKE
Model: JK5550
Origin: China
Machine Parts name:
1) Thread stand: Used for hold the thread package.
2) Spool thread guide: To guide the thread.
3) Eye thread guide:
4) Needle thread tension post: To control the tension of the thread.
5) Needle thread take-up lever: To pull the thread back, after each stitch.
6) Needle bar: To hold the needle.
7) Needle: To make a stitch.
8) Presser foot: To hold the fabric against foot dog's and give pressure according to fabric thickness.
9) Presser foot lifter: To lift the presser foot up and lower.
10) Throat plate: It is a static component which has slots for the foot dogs and a slot for a ` needle for zig-zag stitch.
11) Stitch density controller: To increase and decrease the stitch density per inch during sewing.
12) Feed dogs: To move a fabric forward by a distance equal to the stitch length.
13) Hand wheel: To raise and lower the needle and take up the lower thread from the bobbin.
14) Bobbin Winder: To wind the sewing thread automatically into the machine.
15) Bobbin: To hold the thread inside of the machine.
16) Bobbin cage: To hold the bobbin in the particular place of the machine.
Sample attachment:
Figure: Plain Stitch
Working Principle:
1) First, we plug in the power socket then we switch on the machine.
2) Then we took a woven fabric and put it onto the presser foot of the sewing machine.
3) After that we down the presser foot lifter to press the fabric.
4) We press the foot and needle make the stitch in the fabric continuously.
5)Then we cut the extra thread by a thread cutter.
Precaution:
1) We should keep distance our hand and finger from the needle during sewing.
2) Foot pedal should press according to the length of the stitch.
1) We should keep distance our hand and finger from the needle during sewing.
2) Foot pedal should press according to the length of the stitch.
