(19)

(11)

EP 0 067 831 A1

(12)

(43) Date of publication: 29.12.1982 Bulletin 1982/52 (21) Application number: 82900084.0 (22) Date of filing: 23.12.1981

(51) International Patent Classification (IPC):  A01C 7/ 16( . ) B65G 65/ 46( . ) B65G 33/ 30( . ) (86) International application number: PCT/AU1981/000194 (87) International publication number: WO 1982/002143 (08.07.1982 Gazette 1982/17)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 23.12.1980 AU 19800007050 (71) Applicant: A.F. GASON PTY. LTD. Ararat, Vic. 3377 (AU)	(72) Inventors: WOODWARD, John William Ararat, Vic. 3377 (AU) McKAY, Malcolm Ernest Toowoomba, QLD 4350 (AU)