(19)

(11)

EP 0 774 891 A1

(12)

(43) Date of publication: 28.05.1997 Bulletin 1997/22 (21) Application number: 95927882.0 (22) Date of filing: 10.08.1995

(51) International Patent Classification (IPC):  A01D 41/ 06( . ) (86) International application number: PCT/GB1995/001889 (87) International publication number: WO 1996/004776 (22.02.1996 Gazette 1996/09)

(84) Designated Contracting States: BE DE GB (30) Priority: 11.08.1994 GB 19940016199 11.01.1995 GB 19950000531 (71) Applicant: SHELBOURNE REYNOLDS ENGINEERING LTD. Stanton, Bury-St-Edmunds, Suffolk IP31 2AR (GB)	(72) Inventors: SHELBOURNE, Keith, Howard Pakenham Suffolk IP31 2LN (GB) MCCREDIE, Paul, John Ipswich Suffolk IP7 7AX (GB) (74) Representative: Gura, Henry Alan, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)