(19)

(11)

EP 0 056 030 A1

(12)

(43) Date of publication: 21.07.1982 Bulletin 1982/29 (21) Application number: 81901448.0 (22) Date of filing: 30.04.1981

(51) International Patent Classification (IPC):  B23F 5/ 22( . ) B23F 23/ 12( . ) (86) International application number: PCT/US1981/000594 (87) International publication number: WO 1982/000263 (04.02.1982 Gazette 1982/04)

(84) Designated Contracting States: FR (30) Priority: 21.07.1980 US 19800170369 (71) Applicant: BARBER-COLMAN COMPANY Rockford, IL 61101 (US)	(72) Inventors: HAUG, Edward W. Rockford, IL 61107 (US) FRANSSON, George E. Rockford, IL 61107 (US) HACKMAN, Roger L Rockford, IL 61108 (US)