| 摘要 |
<p>The underneath cutter consists of blades (1) riveted to a rear-piece (2). The top cutter consists of blades (4) fixed, preferably by rivetting, to a second rear-piece (5). The rivet-heads (6) lie flush with the top surface of the rear-piece and with the underneath surface of the top blades (4). The rear pieces (2, 5) are in front of one another in the direction of travel, and their top surfaces (7, 8) are on the same plane. A screw (6a) holds a mounting (9) on the rear-pieces. The mounting (9) consists of a metal piece extending across the rear-pieces (2, 5). The free end of the mounting (9) has an angled step-piece (10) higher than the thickness of the rear-piece(5). The free end of the mounting step-piece (10) presses the top blade against the bottom blade.</p> |
