Eccentric-Ring Combination Lock.
OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C
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The patent discloses a combination lock having an outer operating dial connected through a dial shaft with an internal coding mechanism comprising a number of rotatable eccentric code rings placed successively radially about each other in the same plane and connected with the dial shaft. Rotation of the dial according to a coded combination effects rotation of the rings to positions in which the widest portions are in radial alignment. The eccentricity of the mechanism is then maximum with the outer ring at a maximum distance from the shaft. At this point contact is made with a separate unlocking or output mechanism to trigger it into locking connection with the dial shaft for unlocking operation by the dial. Modified author abstract
- Couplers, Fasteners and Joints