Abstract: The present disclosure describes tumbler-style combination locks and methods for marking tumbler-style combination locks. The locks include a locking member movable between locked and unlocked configurations with respect to a lock body, a plurality of tumblers individually rotatable with respect to the body and coaxially positioned along an axis, and a plurality of strings of letters corresponding in number to the plurality of tumblers. The letters are randomly selected from an alphabet and positioned on an individual tumbler in a string around the axis.

Abstract: A locking device for a storage cabinet that has a door, a cabinet body and a hook defined in the cabinet body facing the door. The locking device mounted on the door. The locking device has a body, a cylinder and a card. The body has a case, a cap and a controlling device. The case has a card slot. The cap is mounted on the case. The controlling device is mounted inside the case and connects to the cylinder. The cylinder has a cylinder body with a keyhole and a key. The card can be inserted into the card slot. When the card is inserted into the card slot, the key can be rotated to operate the lock. The method of using a card instead of coins for the operation a locking device provides convenience.

Abstract: A locking mechanism in which a series of disks each having a radial hole therein are mounted on the inside of a door. Said disks are connected to dials on the outside of the door which are associated with numbered indicia and rotatable to vary the rotatable and axial positions of the holes in the disks. A locking bolt is slidably mounted on the inside of the door and interconnected to a series of pins which are receivable in the holes in said disks when said holes are aligned therewith. A lever is connected to the locking bolt and operable from outside the door to slidably move the bolt from a locked position to an unlocked position when the dials are set at preselected numbers on the indicia to rotatably align the holes in said disks for reception of the pins.