Abrading machine with abrading discs, which are moved in a reciprocatory movement transverse to the item

Abstract From the Canadian patent

An abrading machine is disclosed for abrasion of substantially plane items by use of rotating abrading discs (5, 5') which are moved simultaneously , forwards and backward transverse to the item and which preferably has downward extending abrasive lamellae. The machine also preferably comprises one typically two, opposite rotating abrading cylinders (7 7') fitted with , elongated abrasive elements radially mounted on the abrading cylinder and has abrasive lamellae extending outwards from the cylinder. By moving the abrading discs in a reciprocatory movement (H) transverse to the direction of feed (A) of the items it is achieved that traces etc. from the different abrasive properties …