Method and device for the pneumatic threading of textile machine weft feeders

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(11)

EP 0 939 156 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.05.2001 Bulletin 2001/20

(43)	Date of publication A2:
	01.09.1999 Bulletin 1999/35

(21)	Application number: 99102773.1

(22)	Date of filing: 23.02.1999

(51)	International Patent Classification (IPC)⁷: D03D 47/34, B65H 51/22

(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

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Priority:

26.02.1998 IT TO980152

(71)	Applicant: L.G.L. Electronics S.p.A.
	24024 Gandino (Bergamo) (IT)

(72)	Inventor:
	Zenoni, Pietro 24026 Leffe (IT)

(74)	Representative: Modiano, Guido, Dr.-Ing. et al
	Spandonari & Modiano S.r.l., Corso Duca degli Abruzzi, 16 10129 Torino 10129 Torino (IT)

(54)	Method and device for the pneumatic threading of textile machine weft feeders

(57) A method for the pneumatic threading of weft feeders (10) comprising a fixed drum (11), a hollow driving shaft (13), a hollow windmilling arm (12) which winds the thread onto the drum, braking means (14) and a final thread guiding ring (15). The method comprises the steps of: providing the feeder (10) with a first pneumatic element (18) and with a second pneumatic element (20) which are located at the infeed of the driving shaft (13) and at the output (15) of the feeder, respectively, and selectively activating the pneumatic elements in order to obtain the partial threading of the front part of the feeder (10) only, by guiding the thread (F) through the braking means (14) and the final thread guiding ring (15), or the partial threading of the rear part of the feeder (10) only, by activating the first pneumatic element (20) in order to guide the thread from the infeed of the driving shaft (13) to the base of the drum (11) through the windmilling arm (12).

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