Bolt with interchangeable coded informations

A combination lock having interchangeable coded combinations comprising:

• a fixed shaft;
• at least two locking members mounted for braked rotation on said shaft and preventing, in all their angular positions, free access of a tool for actuating a lock mechanism except one position obtained after having reproduced the coded combination;
• a code disc removably mounted for braked rotation to said shaft and having a reference notch and code notches at predetermined locations in the periphery thereof;
• an assembly oscillatable about said shaft;
• and
• means for repeatedly oscillating said assembly from an initial position, with the angular amplitude of each oscillator corresponding to the numeric value of a digit of a code;
• said assembly including:
• a first pawl cooperating with teeth on a first of said members to rotate the latter in one direction from an initial locking position, on each oscillation of said assembly, a constant angular distance independent of the amplitude of each oscillation;
• and
• a second pawl cooperating with both said second member and the notches in said code disc to rotate the latter in one direction from an initial position, on each oscillation of said assembly, an angular distance equal to the amplitude of each oscillation and to rotate said second member from an initial position if said second pawl is not engaged in a notch of said disc.