| 摘要 |
<p>Cattle for examination or treatment are directed to a corridor having front and rear doors. The corridor and doors comprise frameworks of tubes, welded together. The rear door includes a retractable barrier. The front door is open at its upper part to permit passage of an animal's head. The head can be trapped by turning a handle on a shaft having right and left hand threads to cause frames (8) to swing inwardly. The door is locked by an eccentric (3) operated by a lever (4).</p> |
