(19)
(11) EP 1 063 325 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.03.2002 Bulletin 2002/11

(43) Date of publication A2:
27.12.2000 Bulletin 2000/52

(21) Application number: 00202191.3

(22) Date of filing: 22.06.2000
(51) International Patent Classification (IPC)7D01H 1/36, B65H 54/32
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 24.06.1999 IT MI991404

(71) Applicant: Ditta Michele Ratti S.p.A.
21016 Luino, Varese (IT)

(72) Inventor:
  • Gazzi Maurizio
    I-21016 Luino -Varese (IT)

(74) Representative: De Gregori, Antonella et al
Ing. Barzano & Zanardo Milano S.p.A. Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) Device for the tapering of yarn-gathering bobbins on a twisting frame


(57) A device for the tapering of yarn-gathering bobbins on a twisting frame comprises a traversing roller (11) which is actuated by the main motor of the twisting frame by means of appropriate mechanisms and is provided with a Z-shaped profile (12) generating a reciprocating motion in a connecting road (14) and where the law governing tapering of the bobbins is controlled by an inclinable tapering guide (19), which is kinematically connected to the aforesaid connecting road (14) and is able to vary the stroke of the reciprocating motion of the connecting road (14). If the said device, the inclination of the tapering guide (19) is adjusted by means of the operation of a pneumatic actuator (21), where each stroke of the pneumatic actuator (21) enables practically instantaneous variations in tapering having a pre-set value to be obtained.







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