Apparatus for measuring the position of weft threads in a moving

Details Apparatus for measuring the position of weft threads in a moving Apparatus for measuring the position of weft threads in a moving

1979-10-25

1981-03-10

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

26 515, 250563, 356429, D06M 312, G01B 1126

Patent

active

042550505

ABSTRACT:
The deviation of the weft threads in a fabric is ascertained to show the extent and angle of the deviation relative to a line extending at a right angle relative to the edge of a moving fabric web. For this purpose a sensor head or several sensor heads are movable across the web. Separate signals are produced for the left and right half of the web relative to a longitudinal center line of the web. A comparing unit compares the separate signals for forming a control value or signal.

REFERENCES:
patent: 2219213 (1940-10-01), Swain
patent: 2972794 (1961-02-01), Saul et al.
patent: 3193688 (1965-07-01), Morton et al.
patent: 3517204 (1970-06-01), Mahlo et al.

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