A manuscript containing notes on early cipher machine patents, with a focus in the latter section on the function of the Kryha and Enigma machines. Each record in the manuscript includes the Austrian patent number, date of registration, the inventor(s) and a description of its function. The earliest is a patent issued in 1909 to Serge Kanschine and Emil Jellinek-Mercédès for a cipher typewriter. Designed by Kanschine upon the request of Jellinek, who was a wealthy automobile entrepreneur, the cipher typewriter functioned via two series of disks, of which one series carries the normal type and the second series the cipher type. In the Enigma section of the manuscript, the function of Enigma machine A793, the first of 31 commercial Enigma machines purchased by the Austrian Government in the interwar period, is examined in detail. There are a number of previously unknown terms used in this section, including "Enigma Resultate" and "Enigma Kontra Maschine". This will require further research and translation. There are also a number of hand-drawn notes and fold-out diagrams showing Enigma rotor wiring.