(19)

(11)

EP 0 131 013 A1

(12)

(43) Date of publication: 16.01.1985 Bulletin 1985/03 (21) Application number: 84900288.0 (22) Date of filing: 22.12.1983

(51) International Patent Classification (IPC):  B21D 47/ 00( . ) E04C 2/ 42( . ) (86) International application number: PCT/GB1983/000342 (87) International publication number: WO 1984/002551 (05.07.1984 Gazette 1984/16)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 24.12.1982 GB 19820036759 (71) Applicant: WILLIAMS, John Raymond Shropshire (GB)	(72) Inventor: WILLIAMS, John Raymond Shropshire (GB) (74) Representative: Lewis, Samuel Hewitt  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München D-80801 München (DE)