(19)

(11)

EP 0 353 261 A1

(12)

(43) Date of publication: 07.02.1990 Bulletin 1990/06 (21) Application number: 88910091.0 (22) Date of filing: 28.11.1988

(51) International Patent Classification (IPC):  A24B 1/ 04( . ) B07B 4/ 02( . ) B65G 53/ 20( . ) B01D 46/ 10( . ) B07B 9/ 02( . ) (86) International application number: PCT/GB1988/001041 (87) International publication number: WO 1989/004802 (01.06.1989 Gazette 1989/12)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 26.11.1987 GB 19870027701 24.06.1988 GB 19880015120 (60) Divisional application: 93201289.1 / 0556935 (71) Applicant: Hambro Machinery Limited Netherfield Nottingham.NG4 2PF (GB)	(72) Inventor: MORRIS, Christopher, Philip Nottingham NG4 1DH (GB) (74) Representative: Curtis, Philip Anthony  Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)