4. MECHANICAL DESCRIPTIONS
BAS-342G
35
4. MECHANICAL DESCRIPTIONS
4-1. Needle bar and thread take-up mechanisms
4-2. Lower shaft and shuttle race mechanisms
1. Motor assembly
2. Upper shaft
3. Thread take-up crank
4. Needle bar crank
5. Needle bar
connecting rod
6. Needle bar clamp
7. Needle bar
1233B
1232B
The mechanisms operate in the order of the numbers given in the illustrations.
1. Motor assembly
2. Upper shaft
3. Crank rod assembly
4. Rock gear
5. Lower gear
6. Lower shaft
7. Lower shaft adjusting bush
8. Lower shaft M bush
9. Driver
10. Shuttle hook
<5> Thread take-up
lever assembly
<6> Thread take-up
support
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