摘要 |
<p>The locking system (DV) for a point blade (16) comprises a runner (1) and a locking plate (2) adjoining the runner. A control bar (3) and a parallel locking bar (4) are next to each other. The external casing formed by the control and locking bars and the internal casing of the runner have complementary shapes so as to allow the bars to slide in the runner. First and second movable pegs (5,6) are freely held in first (7) and second (8) notches on the same side of the control and locking bars. The pegs can be driven longitudinally by the notches. The pegs are perpendicular to the longitudinal axes of the control and the operating bars.</p> |