Mailbox signal kit

A mailbox comprising a receptacle provided with an open end, a vertically swinging hinge door to close said open end, said door having attached to the outer face thereof a bracket extending below the bottom of said receptacle, a signal indicator housing attached to the end of the receptacle opposite to the door, indicator means mounted for vertical movement within said indicator housing and movable from a non-viewable position to a viewable position, actuating means connecting the door-mounted bracket with the indicator means structure, said indicator means including an indicator plate movable vertically for viewing and non-viewing, said plate being mounted on two parallel support rods aligned in a vertical position, a buffer spring mounted on at least one support rod below the indicator plate for absorbing the shock of the indicator plate dropping by means of gravity force from the non-viewable position to the viewable position, a reset rod extending below the indicator housing and connected with the indicator plate for moving the indicator plate from the viewable position to the non-viewable position, a signal ball mounted on the lower end of said reset rod, a latch roller mounted on the indicator plate for retaining the indicator plate in the non-viewable position, a latch arm pivotally mounted within the indicator housing and spring-biased to a latching position with the upper end portion engaged under the latch roller to positively yet releasably retain the indicator plate in the non-viewable position, said actuating means including a push rod extending between the door bracket and the lower end of the latch arm for moving the latch arm against the spring bias to release the latch roller and permit the indicator plate to drop to a viewable position, the upper end portion of the latch arm being offset whereby the roller engages the offset upper end portion of the latch arm and moves it pivotally against the spring bias when the indicator plate is lifted to enable the latch roller to roll past the upper end of the latch arm so that the spring bias will move the upper end of the latch arm into latching position under the roller, said indicator plate being distinguishably colored for easy observation, said housing including an opaque wall portion overlying and concealing the indicator plate when in its lifted non-viewable position, said housing including a lower transparent wall portion overlying and revealing said indicator plate when in its lowered viewable position.