Curious Docking Accident

1901 Scientific American  
Vised by Mr. Clayton P. Myel', of Silsbee, Tex., for the purpose of facilitating house-to-house delivery and of indicating that mail has been delivered. The arrangement comprises essentially a box pro vided with a' hinged hood for the letter-receiving slot, which hood when lifted operates a slide by means of chains, to expose the word "Mail," thereby show- ing that mail of some kind has been delivered. The slide is held in its raised position by a spring, and is restored to its normal position by hand.
doi:10.1038/scientificamerican06291901-404a fatcat:vfqinfwnevcghjdpk66vfif3a4