Fly trap with disposable collector

Claim 1

A fly trap comprising first screen means forming a generally vertical outer wall, second screen means forming a generally vertical second wall concentrically disposed within said first wall to thereby define a central region (I) surrounded by generally annular region (II), means forming a plurality of openings about and through the surface of said vertical second wall for flies to migrate from region (I) to region (II), roof means connecting and covering said first and second screen means at their upper ends, floor means interconnecting and closing the bottom ends of the screen means and having a plurality of openings therein positioned about and through the bottom of region II to provide a egress for falling flies, means including floor means forming a plurality of inlet porches constructed to provide insect entry from the outside of the outer wall through the inside of the inner wall said porches including tapered walls which diverge downwardly into full contact with the floor means and converge to form a fly entrance at the inner wall on which and through which the flies enter from the outside into the central region (I), means for receiving a fly attractant in said central region (I), said tapered walls also forming within region I interior walls which converge towards the lower openings, said inner and outer walls and porch walls being significantly more vertical than the angle of repose of dead flies, said outer wall, inner wall and roof, together with porch walls, defining a generally annular region encircling the first region about a substantial vertical extent thereof, said annular region being horizontally continuous about the first region except where interrupted slightly at the lower extreme by porch walls so that well fed flies in region I are attracted to region II by the light, air and flies flitting about in region II to enter into that region from the region I, and flies outside the trap are attracted by the attractant and by the sight and noise of flitting flies in region II, the latter being able to encircle the region I in their general activity, the supply of flies in region II being continually replenished from region I and being kept fresh and moving by attrition of the tired, falling flies which are readily and directly removed by falling through the floor openings, chute means connected to the floor openings and depending downwardly to form a third region III in the shape of a downwardly convergent walls lying below the floor and forming a slide for dead and dying flies, means forming a removable container for receiving the dead and dying flies and connected to the lowermost end of the chute.