(19)

(11)

EP 0 060 286 A1

(12)

(43) Date of publication: 22.09.1982 Bulletin 1982/38 (21) Application number: 81902635.0 (22) Date of filing: 15.09.1981

(51) International Patent Classification (IPC):  A47B 57/ 56( . ) (86) International application number: PCT/GB1981/000192 (87) International publication number: WO 1982/000946 (01.04.1982 Gazette 1982/09)

(84) Designated Contracting States: CH DE FR GB LI NL SE (30) Priority: 20.09.1980 GB 19800030473 (71) Applicant: CLEGHORN GIBSON & COMPANY LIMITED Methven by Perth PH1 3QR (GB)	(72) Inventor: WALLACE, Duncan Bruce Perth (GB) (74) Representative: Wotherspoon, Graham, et al  FITZPATRICKS 4 West Regent Street Glasgow G2 1RS Scotland Glasgow G2 1RS Scotland (GB)