(19)

(11)

EP 0 214 246 A1

(12)

(43) Date of publication: 18.03.1987 Bulletin 1987/12 (21) Application number: 86901740.0 (22) Date of filing: 10.03.1986

(51) International Patent Classification (IPC):  B21K 25/ 00( . ) B23P 6/ 00( . ) (86) International application number: PCT/AU1986/000056 (87) International publication number: WO 1986/005130 (12.09.1986 Gazette 1986/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 08.03.1985 AU 19850009615 (71) Applicant: PATON, Leonard, Gordon Carlingford, NSW 2118 (AU)	(72) Inventor: PATON, Leonard, Gordon Carlingford, NSW 2118 (AU)