Multiple dial combination lock

Details Multiple dial combination lock Multiple dial combination lock

1975-06-27

1976-07-06

Craig, Jr., Albert G.

Locks

Special application

For closures

70 25, 70309, 70315, 70330, 70333R, 292 5, E05B 3712, E05B 3714

Patent

active

039674770

ABSTRACT:
A combination lock is disclosed that has a plurality of separately dialed tumblers mounted for rotation around spaced parallel axes. The tumblers extend through openings in a plate and each carries a fence that cannot pass through the opening. Each opening has a lateral gate slot to receive the fence of the tumbler in the opening. The plate must move over the fences to open the lock which it cannot do until the tumblers are positioned so the fences are positioned in alignment with the gate slots. Provision is made for changing the combination when desired and for opening the lock with a master combination when the current combination is forgotten. Also, in one embodiment, the lock can be opened with a spare combination in addition to the master when the current combination is forgotten or lost.

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