“Mail Box” for Telegrams Transmits Messages (Jun, 1939)
“Mail Box” for Telegrams Transmits Messages
Telegrams are transmitted automatically by a photo-electric facsimile machine housed within a compact wall box, as shown above. Messages are written on special blanks, which are deposited in the telegraphic “mail box” through a slot. Here the blank is automatically wrapped around a transmitting cylinder and the message sent like a wire photograph.