Double chain stitch sewing machine having a looper and a looper

Details Double chain stitch sewing machine having a looper and a looper Double chain stitch sewing machine having a looper and a looper

1988-09-29

1990-12-04

Reynolds, Wm. Carter

Sewing

Stitch forming

Chain or double chain

112166, D05B 110

Patent

active

049745344

ABSTRACT:
A sewing machine with a housing having a base over which the workpiece is movable and with a drive shaft is rotatable in the housing. A needle bar is provided having a plurality of needles and is connected to the drive shaft and moved upwardly and downwardly. A feed mechanism is provided for moving the workpiece. A looper support has a looper for each needle and is connected to the drive shaft for swinging movement. A loop spreader connecting rod has a loop spreader for each needle and is movable transversely to the movement of the needles. A spreader drive shaft is connected to the drive shaft and has a drive crank eccentric which is oscillated by the rotation of the spreader drive shaft. An eccentric arm carried by the crank eccentric is connected to a rocking shaft via a clamp lever and the rocking shaft is connected to a crank which is connected to the connecting rod which carries the spreaders.

REFERENCES:
patent: 966431 (1910-08-01), DeVoe
patent: 2482079 (1949-09-01), Zeier
patent: 4643114 (1987-02-01), Hampel et al.

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