(19)

(11)

EP 0 237 543 A1

(12)

(43) Date of publication: 23.09.1987 Bulletin 1987/39 (21) Application number: 86905376.0 (22) Date of filing: 18.09.1986

(51) International Patent Classification (IPC):  B21D 7/ 14( . ) (86) International application number: PCT/GB1986/000557 (87) International publication number: WO 1987/001625 (26.03.1987 Gazette 1987/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.09.1985 GB 19850023221 25.04.1986 GB 19860010185 (71) Applicant: GARDNER, Robert Frederick Creaton, Northampton (GB)	(72) Inventor: GARDNER, Robert Frederick Creaton, Northampton (GB)