Abstract: There is provided an animal trap which is specific to a given range of animal weights. The trap has a frame, and a spring-arm pivotally mounted at one end to the frame and having at the other end apparatus for entraining a cable. The spring-arm can swing from a horizontal position to an upwardly extending position, and is spring-biased toward the latter. A trip lever can move between two positions, in one of which it retains the spring-arm in the horizontal position, and in the other of which it releases the spring-arm. An animal stepping on the trip lever can cause it to release the spring-arm. The cable is anchored at one end and has at the other end a loop adapted to be placed so as to surround the trip lever. Apparatus is provided for avoiding the springing of the trap by an animal lighter than the given range of animal weights for which the trap is specific, this apparatus including a spring urging the trip lever toward the position in which it retains the spring-arm horizontally.

Abstract: This invention provides a planting apparatus which includes a mobile frame mounted on wheels or the like and adapted to be towed over the ground. An arm is swingably mounted to the frame and extends rearwardly from the mounting location. The arm carries a dibble on its moveable end, which is adapted to cut into the ground during forward travel of the mobile frame. A planter is carried by the arm rearwardly of the dibble and is adapted to support a seedling for planting in the cut made by the dibble. Means is provided to dislodge the seedling from the planter into the cut. Detection means is provided for detecting when the dibble has cut to a predetermined depth into the ground, and for activating the dislodging means whenever that depth is reached. The arm is swung regularly toward and away from the ground, such that the dislodging means fails to operate if the dibble achieves less than the pre-determined depth due to an obstacle. Thus seedlings are planted only where no obstacles are located.