Multiple needle chainstitch sewing machine
AssigneeUnion Special Corporation
InventorGunter Rohr
Life of this patent
Estimating the term…
Abstract
In a trimming device for cutting a cover thread (30) on a multiple needle chainstitch sewing machine, a moveable thread catcher (15) picks up the cover thread (30), which runs between the cover thread guide (27) and a hook part (29) on the spreader (28), and presses the cover thread (30) towards a trapping and cutting device (49,51,48,40) of the trimming device which is disposed adjacent to the left-hand sewing needle (23).
Claims6
A trimming device for controlled cutting of a cover thread on a multiple needle chainstitch sewing machine, comprising a plurality of sewing needles, each guiding a respective needle thread;
- a workpiece support;
- a presser foot;
- a cover thread guide;
- a spreader with a hook part for picking up the cover thread;
- a moveable thread catcher for picking up the cover thread between the upper side of the presser foot and the cover thread guide, the thread catcher having a knife edge;
- a cutting knife;
- and a cover thread trap, said thread catcher being pivotably mounted between the cutting knife and the thread trap.
A trimming device for controlled cutting of a cover thread on a multiple needle chainstitch sewing machine, comprising:
- a) a plurality of sewing needles each guiding a respective needle thread;
- b) a workpiece support;
- c) a presser foot;
- d) a cover thread guide;
- e) a spreader with a hook part for picking up the cover thread;
- (f) means for catching the cover thread running between the hook part of the spreader and the cover thread guide;
- (g) means for trapping the cover thread, said trapping means being disposed in a left-hand region of the plurality of sewing needles;
- (h) means for cutting the trapped cover thread, said cutting means being disposed adjacent to one side of said trapping means;
- said means for catching the cover thread being pivotably mounted between the cutting means and the trapping means for pressing said thread toward said means for trapping and said means for cutting said cover thread.
Dependencies are inferred from the claim text.