Differential feeding device for sewing machine

Details Differential feeding device for sewing machine Differential feeding device for sewing machine

1997-02-27

1998-04-14

Nerbun, Peter

Sewing

Stitch forming

Feeding work material

D05B 2708

Patent

active

057380287

ABSTRACT:
A differential feeding device for a sewing machine includes a spindle and a shaft. A cam is fixed on the spindle and two followers are engaged on the cam for allowing the cam to move the followers up and down. A lever is fixed on the shaft and has one end pivotally coupled to one of the followers and has the other end pivotally coupled to a lower end of another lever which has a groove and which has an upper end pivotally coupled to the other follower. A block is slidably received in the groove and moved along the groove for adjusting the relative movement between the followers.

REFERENCES:
patent: 3611817 (1971-10-01), Smith
patent: 5103751 (1992-04-01), Wang

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