| 摘要 |
<p>The drop-out arm (16) is locked in the high adjusted position against outward pivoting. Its drop-out end (20) is connected to a sheet (24) and its other link end (18) is provided with a pivot link. The link end of the drop-out arm comes into contact with a stop (42) in a specific vertically outwardly moved position. It runs over the stop and is thereby downwardly pivotable through 9 degrees. The drop-out arm in its direction of movement is activated by the force of a spring (17). The drop-out end (20) of the arm is guided in the guide rail (12). In the guide rail above the stop a recess (38) is provided at the point at which the drop out end (20) comes to locate, when the drop-out arm comes into contact with the stop and the drop-out end can come out of the guide rail over the recess.</p> |
