(19)

(11)

EP 0 375 772 A1

(12)

(43) Date of publication: 04.07.1990 Bulletin 1990/27 (21) Application number: 89908451.0 (22) Date of filing: 03.07.1989

(51) International Patent Classification (IPC):  B21D 39/ 04( . ) (86) International application number: PCT/GB1989/000746 (87) International publication number: WO 1990/000097 (11.01.1990 Gazette 1990/02)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 01.07.1988 GB 19880015643 (71) Applicant: IRWIN, William James Dungiven, Londonderry BT48 4TA, Northern Ireland (GB)	(72) Inventor: IRWIN, William James Dungiven, Londonderry BT48 4TA, Northern Ireland (GB) (74) Representative: Connor, Terence Kevin, et al  T.K. Connor & Co. 19 Station Road Sidcup, Kent DA15 7EB Sidcup, Kent DA15 7EB (GB)