Measuring and testing – Inspecting
Patent
1992-04-02
1994-06-28
Noland, Tom
Measuring and testing
Inspecting
G01M 1900
Patent
active
053236602
ABSTRACT:
The present invention provides an apparatus for use in classifying yarn package carrying tubes according to the amount of yarn, if any, thereon. The classifying apparatus includes a device for detecting the presence of yarn on a tube beyond a predetermined radial spacing from the axis of the tube. A device axially moves the detecting device relative to the tube during yarn detecting operation. A signal providing device is operatively connected to the detecting device for providing a signal in response to the commencement, the cessation, or the absence of detection of yarn by the detecting device. The signal providing device can also provide a signal to indicate both the commencement and the cessation of yarn detection. A device determines the axial location of the detecting device relative to the tube. Based upon information regarding the axial location of the detecting device at the time that a signal is provided indicating the commencement, the cessation, or the absence of detection of yarn, the extent of the yarn, if any, remaining on a tube can be calculated.
REFERENCES:
patent: 3368283 (1968-02-01), Le Vasseur
patent: 4158919 (1979-06-01), McMurtry
Irmen Wolfgang
Wirtz Ulrich
Larkin Daniel S.
Noland Tom
W. Schlafhorst AG & Co.
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