(19)

(11)

EP 0 268 630 A1

(12)

(43) Date of publication: 01.06.1988 Bulletin 1988/22 (21) Application number: 87903359.0 (22) Date of filing: 19.05.1987

(51) International Patent Classification (IPC):  B65G 13/ 12( . ) (86) International application number: PCT/GB1987/000342 (87) International publication number: WO 1987/007243 (03.12.1987 Gazette 1987/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.05.1986 GB 19860012149 (71) Applicant: HYDRAROLL LIMITED Anglesey Gwynedd LL60 6HR (GB)	(72) Inventor: JONES, Joseph, Morus Anglesey Gwynedd (GB) (74) Representative: Johnson, Terence Leslie, et al  Edward Evans & Co. Chancery House 53-64 Chancery Lane London WC2A 1SD London WC2A 1SD (GB)