Singer 471U - Page 8

Ul Cutter mechanism (I)
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1. When the sub shaft O moves in the direction of the arrow, the cutter eccentric rod O fitted to the cutter
eccentric wheel O fixed on the sub shaft oscillates.
2. The cutter drive lever O is linked to the end ofthecutter eccentric rodO andso oscillates inthe same way.
3. When thecutter cam segment 0 attachedto the feed cam pushed against thecutterpushbar 0, the clutch 0
riding on the clutch collar 0 moves to the clutch set collar 0.
4. When the cutter push bar 0 movesaway from the cutter cam segment 0, the clutch 0 falls in between the
clutch collar 0 and the clutch set collar 0.
5. When this happens, the cutter drive lever 0 enters the dent in the clutch 0 and lifts it up.
6. Thelowerendoftheclutchis linked tothecutteroperationarm0 andcausesthecutteroperationlink0 linked
to the end of the cutter operation arm 0 to move up and down.
7. Thecutter holder0 islinkedtothecutter operationlink 0, and thecutteroperationshaft0 fixed tothecutter
holder 0 is moved up and down.
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From the library of: Superior Sewing Machine & Supply LLC