Traction device for use in the manufacturing process of ornamental chains

(19)

(11)

EP 0 987 072 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.08.2001 Bulletin 2001/32

(43)	Date of publication A2:
	22.03.2000 Bulletin 2000/12

(21)	Application number: 99830481.0

(22)	Date of filing: 27.07.1999

(51)	International Patent Classification (IPC)⁷: B21L 11/00, B21L 19/00, B66D 5/16

(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:

18.09.1998 IT LU980011

(71)	Applicant: Landucci, Miria
	52100 Arezzo (IT)

(72)	Inventor:
	Landucci, Miria 52100 Arezzo (IT)

(74)	Representative: Bardini, Marco Luigi et al
	c/o Società Italiana Brevetti S.p.A. Corso dei Tintori, 25 50122 Firenze 50122 Firenze (IT)

(54)	Traction device for use in the manufacturing process of ornamental chains

(57) A device for exerting a traction of a chain (2) getting out of a manufacturing machine, fit to be connected to the chain (2) to keep it in traction with its own weight. The device comprises a drive roller (3), motor means (5) for controlling the rotation of drive roller (3), a movable pushing roller (4), elastic means (9) for keeping pushing roller (4) pushed against drive roller (3) with the interposition of chain (2). As a consequence of the friction between chain (2) and rollers (3, 4), the device is steady with respect to the chain when drive roller (3) is blocked, whereas it slides up with respect to chain (2) when drive roller (3) is rotated by motor means (5). Sensor means are associated to motor means (5) for controlling the rotation of drive roller (3) as a function of the level of the device.

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