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-4-
(B)
Mechanism of feed dog and rotary hook movement
Lower shaft
gear
Rotary hook
assembly
Feed dog
Feed carriage
Vertical feed
cam
Horizontal
feed plate
Feed pattern
cam
Feed finger
Feed regulator
Horizontal
feed shaft
Horizontal feed cam
pulley
Forked
connecting rod
Horizontal
feed arm
Lower shaft
Timing belt
Lower shaft
timing belt
Worm gear
Timing pulley
Driving belt
Motor