| 摘要 |
<p>A latch mechanism for hatch covers utilized on railway hopper cars comprises a hand or foot operated latch arm which is held in a closed position by a balanced retaining member pivotally mounted on a keeper element. The retaining member includes a nose engaging latch arm for retaining the same in a closed position. The retaining member also includes a foot element disposed below the arm. Sudden downward movement of the arm within the keeper element against the foot element causes the balanced retainer to be swung to an out-of-the-way position whereupon the arm can be unlatched from the keeper.</p> |
