EP 0193750 B1 19900404 - APPARATUS TO UNRAVEL THREADS FROM A TISSUE
Title (en)
APPARATUS TO UNRAVEL THREADS FROM A TISSUE
Publication
Application
Priority
DE 3507450 A 19850302
Abstract (en)
[origin: US4736499A] Equipment for unraveling threads out of a fabric, in particular cross-threads in the end areas of fabrics produced for papermaking machines, comprising an unraveling assembly including a sensor head for determining the precise course of cross-threads to be removed, an unraveling head transversely displaceable with respect to the cross-threads and having at least one unraveling needle capable of vertical reciprocation into and out of the fabric for capturing and lifting a cross-thread out of the fabric, needle reciprocation means for selective vertical reciprocation of the unraveling needle and cutter means for selectively cutting off cross-thread ends lifted out of the fabric by the unraveling needle. The equipment further includes support means for mutually supporting the unraveling assembly and the fabric in working relationship, tracking control means including means for transversely displacing the unraveling head corresponding to the path of cross-threads to be removed as ascertained by the sensor head and longitudinal displacement means operably associated with the unraveling assembly for providing a stepwise relative displacement between the fabric and the unraveling assembly in the longitudinal direction of the cross-threads to be removed.
IPC 1-7
IPC 8 full level
D06H 5/00 (2006.01); D21F 1/00 (2006.01); D21F 7/10 (2006.01)
CPC (source: EP US)
D21F 1/0054 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0193750 A2 19860910; EP 0193750 A3 19880127; EP 0193750 B1 19900404; AT E51653 T1 19900415; CA 1285131 C 19910625; DE 3507450 A1 19860904; DE 3670108 D1 19900510; FI 82273 B 19901031; FI 82273 C 19910211; FI 860854 A0 19860228; FI 860854 A 19860903; JP H0235078 B2 19900808; JP S61207692 A 19860916; US 4736499 A 19880412
DOCDB simple family (application)
EP 86101645 A 19860208; AT 86101645 T 19860208; CA 503002 A 19860228; DE 3507450 A 19850302; DE 3670108 T 19860208; FI 860854 A 19860228; JP 4203486 A 19860228; US 82999186 A 19860218