(19)

(11)

EP 0 020 571 A1

(12)

(43) Date of publication: 07.01.1981 Bulletin 1981/01 (21) Application number: 79901502.0 (22) Date of filing: 24.10.1979

(51) International Patent Classification (IPC):  D05B 71/ 04( . ) (86) International application number: PCT/US1979/000903 (87) International publication number: WO 1980/000854 (01.05.1980 Gazette 1980/10)

(84) Designated Contracting States: CH DE FR GB SE (30) Priority: 26.10.1978 US 19780954934 (71) Applicant: OPELIKA MANUFACTURING CORPORATION Chicago, IL 60601 (US)	(72) Inventors: BURTON, Perry E. Fountain Inn, SC 29644 (US) BROCKLEHURST, Charles E. Fountain Inn, SC 29644 (US) GRIFFITH, William C., Jr. Fountain Inn, SC 29644 (US) (74) Representative: Dealtry, Brian  Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)