Yarn defect detecting method

Details Yarn defect detecting method Yarn defect detecting method

1987-04-20

1989-04-04

Hail, III, Joseph J.

Measuring and testing

Sheet, woven fabric or fiber

Filament

57264, D01H 1322

Patent

active

048174254

ABSTRACT:
A method of detecting a defect of a running yarn comprises steps of producing an electric signal in accordance with a winding speed of a yarn, correcting a reference value corresponding to a length of a defect of a yarn in accordance with the electric signal, and comparing the thus corrected reference value with a detection signal produced from a yarn defect detecting head thereby to detect a defect of the yarn included in the yarn during feeding.

REFERENCES:
patent: 3476329 (1969-11-01), Felix
patent: 3748707 (1973-07-01), Aihara et al.
patent: 4007457 (1977-02-01), Aeppli
patent: 4137699 (1979-02-01), Stahlecker et al.
patent: 4195345 (1980-03-01), Artzt et al.
patent: 4246748 (1981-01-01), Artzt et al.

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