Combination locks with improved code-changing features

A method of changing a combination for a combination lock having a dial rotatable to a series of sequential rotational positions to rotate at least first and second tumbler discs to an unlocking orientation to permit movement of a locking member from a locking position to a releasing position, and a code change mechanism having a cam rotatable between separate locked, unlocked, and code change positions, and a driving member that rides on an arcuate track of the cam when the cam is rotated between the locked, unlocked, and code change positions, the method comprising:

• rotating the cam from the locked position to the code change position, such that a ramped portion of the arcuate track axially moves the driving member against the dial to disengage the dial from the first tumbler disc;
• rotating the dial with respect to the first tumbler disc to a selected one of at least first and second code selecting orientations;
• rotating the cam back to the locked position to re-engage the dial with the first tumbler disc in the selected code selecting orientation for co-rotation therewith.

A method of changing a combination for a combination locker lock having a dial rotatable to a series of sequential rotational positions to rotate at least first and second tumbler discs to an unlocking orientation to permit movement of a locker door from a closed position to an open position to access a locker enclosure, and a code change mechanism having a cam rotatable between separate locked, unlocked, and code change positions, and a driving member that rides on an arcuate track of the cam when the cam is rotated between the locked, unlocked, and code change positions, the method comprising:

• moving the code change mechanism to rotate the cam from the locked position to the code change position, such that a ramped portion of the arcuate track axially moves the driving member against the dial to disengage the dial from the first tumbler disc, the code change mechanism being operable from outside the locker enclosure while the locker door is in the closed position;
• rotating the dial with respect to the first tumbler disc to a selected code orientation;
• moving the code change mechanism to rotate the cam back to the locked position to re-engage the dial with the first tumbler disc in the selected code orientation.