摘要 |
<p>The wall has a window (1) arranged in a wall section (2), through which a horse inserts its head, where the window is formed as an upward open recess at a top edge. A slider (7) is movable between an opened position in which the slider freely leaves the window, and a locked position in which the slider locks the window. An engine (8) moves the slider, where the engine is controlled by a control unit i.e. time switch clock. The slider is vertically movable between the positions and is movable upward from the opened position into the closed position.</p> |