Title of the article: "Miracle over Miracles", which was published on 15.04.1939, writes about kryptograph by certain danish inventor named Helgermhansen:
Google translate of the article:
Miracle over miracles ...
Copenhagen, Friday. (Stefani.) A young Danish named Helgermhansen invented a machine called a cryptograph, with which one can find the key to each secret cipher. The Danish Ministry of War is studying the machine. The sale of a patent abroad was prohibited.