Abstract: A mail delivery system including, a plurality of portable trays each tray having a bottom, an open top, at least two rigid oppositely disposed sides affixed to the bottom, at least one open side, a gate member to open and close the open side. Separators removably attached to at least the bottom. Regularly spaced slots within the bottom to receive the separators. At least one set of handle members to assist in the transportation of the portable tray and to assist in the withdrawal or insertion of the portable tray from holder members arranged to receive the tray. A tray case containing a plurality of holder members to removably receive a plurality of the portable trays, members for raising and lowering the case and the trays from a loading position to a sorting position. A transport member containing a plurality of holder members to receive the portable trays and transport the portable trays from the tray cases to a tray rack in a delivery vehicle.

Abstract: A mail delivery system including, a plurality of portable trays each tray having a bottom, an open top, at least two rigid oppositely disposed sides affixed to the bottom, at least one open side, a gate member to open and close the open side. Separators removably attached to at least the bottom. Regularly spaced slots within the bottom to receive the separators. At least one set of handle members to assist in the transportation of the portable tray and to assist in the withdrawal or insertion of the portable tray from holder members arranged to receive the tray. A tray case containing a plurality of holder members to removably receive a plurality of the portable trays, members for raising and lowering the case and the trays from a loading position to a sorting position. A transport member containing a plurality of holder members to receive the portable trays and transport the portable trays from the tray cases to a tray rack in a delivery vehicle.

Abstract: A postal tray to facilitate the sorting and distribution of mail in the form of a box-like configuration having an open top and an open front. The tray includes a plurality of removable partitions which when used forms a series of pockets within which is to be located mailing envelopes. An elongated rod is included within the tray with the rod being movable from an access position to a position preventing accidental dislodgement of mailing envelopes from the pockets. The tray includes brackets formed on the upper surface thereof to facilitate stacking with another tray. Also, each tray is provided with a pair of tie down brackets which are to be connected with an elongated member such as a bar to tie together stacked postal trays.