Package quality monitor

Details Package quality monitor Package quality monitor

1984-01-12

1987-06-30

Levy, Stewart J.

Electricity: measuring and testing

A material property using electrostatic phenomenon

Frictionally induced

242 18A, 242 18DD, 242 36, G01N 2760

Patent

active

046773878

ABSTRACT:
The monitor is spaced a small distance from the curved path of the travelling thread to sense defects in the thread. In one embodiment, the monitoring means is spaced from the winding surface of a chuck to sense broken threads or an accurate build-up of the thread package. The monitoring means includes a detector head with a charge collector rod for sensing changes in electrical potential of the rod due to contact with a travelling thread part. The monitoring means can be moved away from the chuck to maintain a constant distance from the thread package being wound on a bobbin tube on the chuck.

REFERENCES:
patent: 2980855 (1961-04-01), Moore
patent: 3037162 (1962-05-01), Jones et al.
patent: 3360830 (1968-01-01), Wilson
patent: 3514615 (1970-05-01), Noiles et al.
patent: 3643883 (1972-02-01), Wuest
patent: 4133207 (1979-01-01), Weidmann et al.
patent: 4256247 (1981-03-01), Loepfe
Kirkwood et al, "Measurement of Triboelectric Response of Raw Cottons", Textile Research Journal, vol. 24, No. 9, Sep. 1954.

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