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A device for limiting the size and shape of mail which may be deposited into a mail drop box. The box includes an enclosure having a deposit port at its upper end of a predetermined size and shape, and a collection chamber below the deposit port. There is a pivotal door having at most substantially

A device for limiting the size and shape of mail which may be deposited into a mail drop box. The box includes an enclosure having a deposit port at its upper end of a predetermined size and shape, and a collection chamber below the deposit port. There is a pivotal door having at most substantially the same size and shape as the deposit port and closing the deposit port when the door is in a first, closed position and opening the deposit port when the door is in a second, open position. A plate is disposed in the enclosure between the deposit port and the collection chamber of a substantially similar size and shape as the deposit port and having a restricted size opening and located to be exposed when the pivotal door in the open position to restrict the size of the deposit port to the restricted size opening.

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1. A drop box, comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is

1. A drop box, comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is in a first, closed position and opening said deposit port when the door is in a second, open position,a plate disposed in said enclosure between said deposit port and said collection chamber and of a substantially similar size and shape as said deposit port and having a restricted size opening and located to be exposed when said pivotal door in said open position to restrict the size of said deposit port to said restricted size openingmeans for attaching said plate to the inside of said door.2. A drop box, comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is in a first, closed position and opening said deposit port when the door is in a second, open position,a plate disposed in said enclosure between said deposit port and said collection chamber and of a substantially similar size and shape as said deposit port and having a restricted size opening and located to be exposed when said pivotal door in said open position to restrict the size of said deposit port to said restricted size opening,said plate including a first planar portion having said restricted size opening and a second portion adapted for affixing said plate to said drop box, and wherein said door and said plate are attached to each other at an angle so that as said door is moved to said open position, the restricted size opening in said plate closes the deposit port and prevents objects from being placed into the drop box that do not fit through the restricted size opening.3. A drop box comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is in a first, closed position and opening said deposit port when the door is in a second open position,a plate disposed in said enclosure between said deposit port and said collection chamber and of a substantially similar size and shape as said deposit port and having a restricted size opening and located to be exposed when said pivotal door in said open position to restrict the size of said deposit port to said restricted size opening,said plate including a first planar portion having said restricted size opening and a second portion adapted for affixing said plate to said drop box, and wherein said plate is adapted for affixing to said pivotal door.4. The drop box of claim 2, wherein said plate is adapted for affixing to said enclosure.5. The drop box of claim 4, wherein said restricted size opening is of substantially lesser dimensions than said plate.6. The drop box as defined in claim 4 wherein said restricted size opening is always open.7. A drop box as defined in claim 2, wherein said restricted size opening is of substantially smaller dimensions than said plate.8. A drop box comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is in a first, closed position and opening said deposit port when the door is in a second, open position,a plate disposed in said enclosure between said deposit port and said collection chamber and of a substantially similar size and shape as said deposit port and having a restricted size opening and located to be exposed when said pivotal door in said open position to restrict the size of said deposit port to said restricted size opening,said plate including a first planar portion having said restricted size opening and a second portion adapted for affixing said plate to said drop box, andwherein said restricted size opening is always open.9. A drop box, comprising:an enclosure having a deposit port at its upper end and of a predetermined size and shape and a collection chamber below said deposit port;a pivotal door having at most substantially the same size and shape as said deposit port and closing said deposit port when the door is in a first, closed position and opening said deposit port when the door is in a second, open position, a plate disposed in said enclosure between said deposit port and said collection chamber and of a substantially similar size and shape as said deposit port and having a restricted size opening and located to be exposed when said pivotal door in said open position to restrict the size of said deposit port to said restricted size opening, said pivotal door comprises a first planar portion adapted for closing and opening said deposit port and a second planar portion adapted for forming said bottom portion of said collection chamber, and further wherein said first and second planar portions are affixed to each other along a horizontally oriented axis of rotation for said pivotal door.10. The drop box of claim 9, wherein said enclosure has a top shaped like a hemispherical surface of rotation with respect to the axis of rotation of said pivotal door, and further wherein said plate is affixed to said door with an outer most edge thereof located proximally to said surface of rotation to prevent items from passing said plate except through said restricted size opening.11. An object size limiting drop box comprising:a drop box housing;a deposit port near or at the upper end of the housing;a collection chamber in said housing disposed below said deposit port;a pivotal door for opening and closing said deposit port;a first planar member and a second planar member joined together forming a predetermined angle therebetween and located in said deposit port; andan aperture disposed in said first planar member, said aperture sized always opened and to prohibit passage therethrough of objects larger than desired.12. The drop box of claim 11, wherein said aperture dimensions are substantially smaller than the dimensions of said first planar member.13. A drop box as defined in claim 12 wherein said planar members are rectangular shaped.14. A drop box as defined in claim 12 wherein said predetermined angle ranges approximately from 75 degree to 105 degrees.15. A drop box as defined in claim 12 wherein said first planar member is sized to cover the deposit port.16. A drop box as defined in claim 12 wherein said second planar member is attached to the housing in juxaposition to said deposit port.17. A drop box as defined in claim 11 wherein said planar members are rectangular shaped.18. A drop box as defined in claim 11 wherein said predetermined angle ranges approximately from 75 degree to 105 degrees.19. A drop box as defined in claim 11 wherein said first planar member is sized to cover the deposit port.20. A drop box as defined in claim 11 wherein said second planar member is attached to the housing in juxaposition to said deposit port.21. A retrofit assembly for a drop box having a drop box housing, a deposit port near or at the upper end of the housing having a door which may be opened to deposit mail, and a collection chamber in the housing and disposed below the deposit port, the assembly being a mail size limiting device comprising:a shaped element having two elongated members, said members being angularly positioned from each other between about 75 degrees to about 105 degrees;an aperture disposed in one of said members, said aperture sized to prohibit passage therethrough of objects larger than desired; andsaid shaped element being adapted to be attached to the drop box housing in the vicinity of the deposit port,means for attaching said mail size limiting device to the inside of the drop box deposit port door,whereby mail deposited into the deposit port passes through said aperture, thereby limiting mail entry into the drop box by the geometric configuration of said aperture.