Method of and device for determining the quality of running yarn

Details Method of and device for determining the quality of running yarn Method of and device for determining the quality of running yarn

1988-06-21

1990-06-19

Willis, Davis L.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

356430, G01N 2189

Patent

active

049348140

ABSTRACT:
Method of determining the quality characteristic of running yarns, in which the number of yarn imperfections is ascertained with the aid of fluff counters, wherein the thread passes through at least three fluff sensors of the same type arranged one after another, whose counting pulses, which are emitted upon passage, by a yarn section of the freely selectable length L, are converted into a length-related average R, highly deviant individual measurement results being regarded as outlier values and not being included in the averaging.

REFERENCES:
patent: 3543360 (1970-12-01), Fertig
patent: 3729635 (1973-04-01), Shottenfeld et al.
patent: 3758216 (1973-09-01), Stutz
patent: 3986037 (1976-10-01), Faulhaber
patent: 4051722 (1977-10-01), Feller

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