| 摘要 |
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. Further apparatus are provided for avoiding retention in the trap of an animal heavier than the given range, and this includes a connector in the cable which joins one portion of the cable to another portion, such that the connector is capable of releasing these portions from connection together upon the application of a sufficient force. This will allow a heavier animal to break free of the trap.
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