(19)

(11)

EP 0 242 390 A1

(12)

(43) Date of publication: 28.10.1987 Bulletin 1987/44 (21) Application number: 86906366.0 (22) Date of filing: 14.10.1986

(51) International Patent Classification (IPC):  A01D 34/ 416( . ) (86) International application number: PCT/GB1986/000621 (87) International publication number: WO 1987/002215 (23.04.1987 Gazette 1987/09)

(84) Designated Contracting States: AT BE DE FR GB IT NL SE (30) Priority: 14.10.1985 GB 19850025248 (71) Applicant: Braithwaite, Philip Wilson Strensham Worcestershire WR8 9LN (GB)	(72) Inventor: Braithwaite, Philip Wilson Strensham Worcestershire WR8 9LN (GB) (74) Representative: James, Michael John Gwynne, et al  Wynne-Jones, Lainé & James 22, Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)