Rotors for a ciphering machine

Details Rotors for a ciphering machine Rotors for a ciphering machine

1944-02-21

1979-05-29

Birmiel, Howard

Geometrical instruments

339 18R, H04L 900

Patent

active

041563140

ABSTRACT:
1. In a cryptographing machine, a commutator comprising a disc of insulation having an axial opening therethrough and having a peripheral flange thereon, and having a plurality of slots formed in its inner surface, a plurality of contacts anchored in a ring in one surface of said disc, a plurality of second contacts each having a springy end retaining that contact in readily detachable position in one of said slots and a springy intermediate portion and a contact proper supported by said intermediate portion, and conductors connecting said contacts to said second contacts in pairs disposed heterogeneously around said ring.

REFERENCES:
patent: 1510441 (1924-09-01), Hebern
patent: 2125995 (1938-08-01), Doidge
patent: 2373890 (1945-04-01), Hebern
patent: 2402182 (1946-06-01), Rosen

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