Abstract: A livestock headgate is provided having certain automatic features of operation and capability for adjustment to the size of the livestock. The headgate utilizes two vertically elongated swinging frameworks which are coupled so that when one framework is swung to the forward discharge position, the second framework follows. The frameworks, in their coplanar closed positions, permit the animal's head to pass therebetween. When the animal's shoulder touches one of the frameworks, an upright member under tension is caused to rapidly close upon the neck of the animal. When the frameworks are swung to the forward discharge position, the tensioned member is automatically restored to its starting position.

Abstract: A swinging gate apparatus is provided having a gate member which automatically opens by pressure applied to either side by an automobile or other vehicle. In opening, the gate member tilts upwardly so that the force of gravity causes it to close. The rate of opening and closing is controlled by the concertive action of spring means, motion dampening means, and a cam mechanism.