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(11) | EP 0 375 012 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Method and device for monitoring the path and quality of the yarn under formation in a ring spinning machine |
(57) A method for continuously monitoring a moving yarn under formation and collection
on a package (14) in a ring spinning machine, the method using a photoelectric or
capacitive or piezoelectric transducer (2) positioned between the last pair of drafting
rollers (8) and the underlying yarn guide element (4), or positioned to replace this
latter, and a device for implementing this monitoring. |