(19)

(11)

EP 0 437 541 A1

(12)

(43) Date of publication: 24.07.1991 Bulletin 1991/30 (21) Application number: 89912267.0 (22) Date of filing: 27.10.1989

(51) International Patent Classification (IPC):  B31F 1/ 28( . ) (86) International application number: PCT/GB1989/001290 (87) International publication number: WO 1990/004513 (03.05.1990 Gazette 1990/10)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 27.10.1988 GB 19880025145 (71) Applicant: THE LANGSTON MACHINE COMPANY Milton Keynes MK6 1AF (GB)	(72) Inventor: STUTT, Colin Bristol BS5 7TD (GB) (74) Representative: Hirsh, Ivan Yehudi, et al  Molins PLC Group Patent Department Haw Lane Saunderton High Wycombe Bucks HP14 4JE High Wycombe Bucks HP14 4JE (GB)