| 摘要 |
<p>When the user keeps a control element (30), located at the lower side of the handle (1), pressed a spring supported serrated pin (32) is caused to move up along the toothed rim of a wheel (22) belonging to a unit of three (22, 23, 25). The toothed wheel (22) at the front acts on a serrated strip (21) positioned horizontally above the blade holder (51). The blade holder (51) engages with the serrated strip (21) and moves the blade (52) into a working position. The blade (52) is pulled back automatically as soon as the user releases the control element (30).</p> |
