Workpiece clamping unit driving mechanism for sewing machine

Details Workpiece clamping unit driving mechanism for sewing machine Workpiece clamping unit driving mechanism for sewing machine

1998-06-24

1999-11-23

Nerbun, Peter

Sewing

Special machines

Pattern controlled or programmed

11247018, D05B 2100

Patent

active

059880848

ABSTRACT:
A sewing machine is provided with a workpiece clamping unit which clamps and carries a workpiece along the surface of the bed during stitching operation, and a workpiece clamping unit driving mechanism comprising a driving means and a motion converting means. The driving means comprises first and second drive shafts, first and second driving sources for driving the first and the second drive shaft, and first and second compound plate cams fixedly mounted respectively on the first and the second drive shafts. The motion converting means converts the angular motions of the first and the second drive shaft into motions parallel to the upper surface of the bed (6) of the sewing machine.

REFERENCES:
patent: 3399640 (1968-09-01), Bryan et al.
patent: 3543737 (1970-12-01), Maschmann
patent: 3970016 (1976-07-01), Yanikoski
patent: 4459925 (1984-07-01), Miyachi et al.

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