Abstract: In a recodable lever tumbler lock such as used with a safety deposit box lock, a coding device (17) and a recoding pin of particular configuration are caused to interact with remaining components of the lock mechanism of more conventional construction. When the lock is activated to its normal retracted position, one end of the coding device functions as a stop abutment and engages a waist portion on the recoding pin whereby another part of the coding device engages a hook means provided on the periphery of a dog (7) included in the lock, and the dog can be rotated only through about 150.degree. with the ordinary key. When the lock is to be recoded so as to work with a different key, the lock is first activated to its locking mode with the door open, and the recoding pin is moved to a second end position by manual manipulation. In this second end position, the end (17e) of the coding device is prevented from entering a waist on the pin and therewith enables the dog to be rotated through 180.degree.

Abstract: A first set of pivoted latching fingers having hook ends facing in a first direction are provided, together with a second set of pivoted latching fingers interlaced with the first set in accordance with a particular combination which unlocks the device. The fingers of the second set of latching fingers have hook ends facing in a direction opposite to the direction of orientation of the hook ends of the first set and actuation of only the proper combination of fingers causes the hooks of all fingers to be displaced away from a pair of facing lock anchor members to unlock the lock. All of the fingers are pivoted so that slight amounts of magnetically permeable material in the card key are sufficient to move the hooks of the pivoted latching fingers bearing permanent magnets, through a substantial distance, to enable the use of a thin, flexible card key for positive lock actuation.

Abstract: The levers (5) of a lock which retain a bolt (3) in its locking position are prevented from moving to release the bolt by a latching member (12) in its latching position. The latching member (12) is movable along a guide (10) to an unlatching position by action of a solenoid (15). Insertion of the key (6) into the lock operates a switch (20) which actuates a timer operating the solenoid after a delay.

Abstract: A card operable magnetic lock apparatus comprising an elongated non-magnetic plate member and a plurality of tumbler members which are normally biased into engagement in longitudinally spaced recesses of the plate member to prevent longitudinal movement thereof. The tumbler members pivot about a common axis and have north and south magnetic poles which are substantially opposite relative to the axis. A properly encoded magnetic card can be positioned adjacent the tumbler members to urge the tumbler members out of engagement in the recesses to free the plate member for longitudinal movement.

Abstract: A lock assembly has a housing in which is provided a cylinder lock having a shell fixed in the housing and a plug rotatable in the shell by means of a key. A tongue is carried on and jointly rotatable with the plug and is formed with a plurality of bittings each engageable with a respective tumbler in the housing and displaceable into an aligned position. A locking element such as a bolt is engageable with the tumblers and is only displaceable between a locked and unlocked position when the tumblers are in the aligned position. The tongue is formed of a plurality of plates each constituting a respective one of the bittings. Thus even if the cylinder lock is forcibly ripped out of the assembly a tumbler-type lock structure is left within that cannot readily be overcome to allow operation of the locking element.