(19)

(11)

EP 0 597 840 A1

(12)

(43) Date of publication: 25.05.1994 Bulletin 1994/21 (21) Application number: 91909478.0 (22) Date of filing: 14.05.1991

(51) International Patent Classification (IPC):  B31F 1/ 28( . ) (86) International application number: PCT/GB1991/000758 (87) International publication number: WO 1991/017881 (28.11.1991 Gazette 1991/27)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 15.05.1990 GB 19900010814 15.05.1990 GB 19900010815 (71) Applicant: THE LANGSTON MACHINE COMPANY LIMITED Milton Keynes MK14 5LU (GB)	(72) Inventors: CAHILL, Michael, John 2 Sir William Lyons Road Coventry CV4 7EZ (GB) STUTT, Colin Bristol BS5 7TD (GB) (74) Representative: Hirsh, Ivan Yehudi  Molins PLC Group Patent Department Haw Lane Saunderton High Wycombe Bucks HP14 4JE High Wycombe Bucks HP14 4JE (GB)