| 摘要 |
2. A cipher machine, comprising a plurality of rotatably mounted coding wheels each having ratchet teeth on its periphery and an annular series or uniformly spaced contacts on one face opposed to a like series on the opposite face, electrically conducting means randomly connecting each contact to a contact on the face of the wheel opposite thereto, a fixed spacer between each two of said wheels having through conductors to close the circuits between the contacts on the adjacent wheels, a plurality of type bar actuating solenoids, means operatively connecting each of said solenoids respectively to a circuit through said coding wheels and spacers, a plurality of keys, circuit means connecting each said key respectively to a circuit through said coding wheels and spacers, circuit closing means carried by each said key, a respective functional unit of operating mechanism associated with each code wheel to rotate such code wheel through the angular space of one ratchet tooth each time such unit operates, said functional units of operating mechanism being conditionable for operation or non-operation, and a common member actuatable by every key when depressed to cause operation of all said units of operating mechanism then conditioned for operation.
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