Dual needle bar sewing machine

Details Dual needle bar sewing machine Dual needle bar sewing machine

1984-08-23

1985-10-15

Schroeder, Werner H.

Sewing

Stitch forming

Multiple machines

112220, D05B 5514

Patent

active

045467145

ABSTRACT:
A sewing machine utilizing two needle rods driven by separated coaxial drive shafts and means for selectively interconnecting the two coaxial drive shafts. The means connecting the drive shafts can be selectively disengaged by means of an electromagnet depending upon whether it is desired to operate one or both of the needle rods at the same time.

REFERENCES:
patent: 3077846 (1963-02-01), Bono
patent: 3913508 (1975-10-01), Boser
patent: 4445450 (1984-05-01), Ebata
patent: 4473018 (1984-09-01), Shimoda et al.
patent: 4474124 (1984-10-01), Yamazawa
patent: 4478161 (1984-10-01), Hanyu et al.
patent: 4485751 (1984-12-01), Ronchi et al.

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