Apparatus for classifying textile tubes according to the amount of yarn thereon

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.

Dependencies are inferred from the claim text.