Deposit and collection receptacles – Letter boxes – Signals
Patent
1976-05-12
1977-02-01
McCall, James T.
Deposit and collection receptacles
Letter boxes
Signals
232 17, B65D 9100
Patent
active
040058166
ABSTRACT:
Each of the opposite ends of a basically conventional mailbox is provided with a hinged closure which operates a signal device which is pivoted on the side of the mailbox so as to be elevated by the opening of the entry or deposit end of the box and to be lowered upon the opening of the exit or removal end of the mailbox. The entry closure operates a spring mounted rod to lift the signal device and the exit closure operates a small chain to drop the signal device back to its normal lowered position.
REFERENCES:
patent: 1562536 (1925-11-01), Berg
patent: 1990003 (1935-02-01), Schlenker
patent: 2480469 (1949-08-01), Horn
patent: 3106335 (1963-10-01), Allan
patent: 3589329 (1971-06-01), Schuh
Aschenbrenner Peter A.
Henry Patrick F.
McCall James T.
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