Patent for "a trap of the character mentioned simple and efficient means for closing the entrance thereof, whereby an animal or fowl passing therethrough shall be prevented returning, and thus be held in the trap, and, further, to so construct such means as to permit the door of the trap remaining in an open position except when the animal or fowl attempts to pass out through the same, thereby affording a free passage to the interior of the trap and presenting and inducement for other animals or fowls to enter." (Lines 13-24) Includes instructions and illustrations.