| 摘要 |
<p>The machine has a shaping head sliding along straight tracks at right angles to each other and in the same plane. The head (10) can be turned by hand and/or an electric motor. A pair of rollers (35, 36), movable towards each other, are mounted with the head in a common frame (1). The head can have a planetary disc (14) on a rotary spindle (12), and containing slots symmetrical in relation to its centre and also to diagonals at right angles to each other. A pin working in each slot is fixed at the side away from the spindle to a slide (21), and at the other side to one of two follower plates (22).</p> |
