Optics: measuring and testing – By monitoring of webs or thread
Patent
1987-09-30
1988-11-22
Rosenberger, R. A.
Optics: measuring and testing
By monitoring of webs or thread
356430, G01N 2184
Patent
active
047861770
ABSTRACT:
A system for measuring the weft or mesh serial position in textiles, in which the angular position of the weft/mesh series is measured for determining the angle of distortion passing over a partial amount of the length thereof, includes an illumination measuring system which measures values of light from a light source either passing through or reflected from the textile fabric to be tested, in a substantially linear range, and an adjusting assembly which reciprocally and oscillatingly rotates the linear range about a central angle to adjust the linear range at an angle relative to the textile fabric; rotating or measuring the reflection or transmission values in several discrete equidistant angular units; a group of memories for storing the measured values corresponding to at least a few angular units; and a digital unit connected to the memories for comparing the stored values in calculating a distortion angle in response to such comparison.
REFERENCES:
patent: 4248533 (1981-02-01), Shimada
patent: 4255050 (1981-03-01), Beckstein et al.
patent: 4414476 (1983-11-01), Maddox et al.
Beckstein Hellmut
Wild Siegfried
Cooper Crystal
Mahlo GmbH & Co. KG
Rosenberger R. A.
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