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1. 发明专利

GB532345A Electrical ciphering machine 未知
公开(公告)号：GB532345A
公开(公告)日：1941-01-22
申请号：GB2252439
申请日：1939-08-03
申请人： GUY WILLIAM OGDEN
IPC分类号： G09C1/10
摘要： 532,345. Ciphering apparatus. OGDEN, G. W. Aug. 3, 1939, No. 22524. Drawings to Specification. [Class 146 (ii)] In an electrical ciphering machine with a manually operated keyboard, each key is connected through a transposing relay to a chain of switches and relays connected with a, printing mechanism. The keyboard may contain a spacing key. They key leads are arranged in groups of one or more leads in ordered position, the total number of symbols available being the total combinations of the key leads. The transposing relays are arranged for ciphering, deciphering, or direct printing and are connected to a set of outgoing leads equal in number to and grouped in the same way as the key leads. When ciphering and deciphering, the transposing relays are energized over a chain of selector switches actuated by the keys so as to cause actuation of the relays in a sequence depending on the numbers of the selector switches and their contacts. The transposing relays may be connected in pairs. The initial setting of the selector switches may be determined by letters on the switch drums providing a key-word. The outgoing leads are connected to a chain of switches and relays having outlet wires at least equal in number to the keys and actuating the printing solenoids which operate the type bars or control the stops of a type wheel. The circuits may be completed by switches which are automatically returned to normal when the cover of the machine is removed, so that reading of the primary setting is impossible.

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