Device for optically scanning the material being sewn in a sewin

Details Device for optically scanning the material being sewn in a sewin Device for optically scanning the material being sewn in a sewin

1992-01-17

1993-12-21

Nerbun, Peter

Sewing

Special machines

Darning

112306, 250561, D05B 2100, D05B 3510, D05B 3512

Patent

active

052713458

ABSTRACT:
To scan the material being sewn (30, 31) in a sewing machine in an annular area around the presser foot, an annular lens system (25) is provided, which images a circle (33) concentrically surrounding the presser foot in the plane (A) of the material being sewn onto the light inlet ends of a likewise annularly arranged plurality of optical fibers (26). The optical fibers (26) lead, in an individual assignment, to the individual light-receiving elements of a photoelectric sensor line of a line camera, which sensor line can be read cyclically.

REFERENCES:
patent: 3385245 (1968-05-01), Ramsey
patent: 4498404 (1985-02-01), Sadeh
patent: 4681048 (1987-07-01), Willenbacher
patent: 4932343 (1990-06-01), Mardix et al.

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