Sargent & Greenleaf, Inc.

James C Miller

Charles G Bechtiger

Paul R Proefrock

James P Peppard

A time delay combination lock having the usual combination mechanism including a stack of rotatable tumbler wheels journaled on a dial spindle by a driving cam, and a fence lever pivoted on a bolt to descend to a lower coupled position with the drive cam and retract the bolt along an unlocking path when the proper combination is dialed. A timing movement is provided having an intercoupling gear train including an input gear rearwardly adjacent the driving cam for winding the main spring to woundup condition upon rotation of the dial and driving cam through a predetermined arc. A pivoted blocking lever biased to a normal stop position is located in the unlocking path of part of the fence lever to bar unlocking movement of the fence lever in its lower coupled position, and the lock case has a fixed backup shoulder immediately adjacent the blocking lever to support the blocking lever against attempted forced displacement of the fence lever and bolt in a bolt unlocking direction. The intercoupling gear train permits multidirectional operation of the dial to dial the combination for a limited time dialing period following wind-up of the main spring, and a lever system is provided to displace the blocking lever to a release position for a later short time period after termination of the multidirectional dialing period to allow retraction of the bolt to unlocked condition. A formation on the input gear bars change key access to the combination change mechanism except at selected positions.

Time delay combination lock

The invention disclosed in the application is a time lock for bank vault doors and the like having a plurality of timer units of the settable dial type with a clockwork mechanism which includes a slip clutch in the gear train which permits the main winding stem to be rotated in an unwinding direction to move the dial in a descending time direction if it has been overdriven to a higher time setting than desired, and which includes a kicker arm mechanism to be abruptly kicked by spring force against a carrier assembly for the time lock unit to shift the carrier to release position when the dial reaches zero time.

Time lock with kicker arm carrier actuator

Combined dial ring and removable center bearing assembly for combination

A high security padlock for use with a pair of companion locking bars having apertured hasp end portions to be disposed in alined abutment and locked together, the padlock comprising a padlock body having a rearwardly opening cavity to receive the alined abutting hasp end portions therein and the padlock including a shackle extending through said cavity to pass through a pair of alined apertures in the hasp end portions, and a lock mechanism with the padlock body, together with a wedge attack resisting collar member shaped to surround three sides of the pair of alined hasp end portions having a portion disposed in the rearwardly opening cavity of the lock body and portions protruding rearwardly beyond the rear surface of the lock body. The collar member has a knuckle formation received in a socket in the lock body for pivotally locating the collar for swinging movement about a vertical pivot axis, and the collar member has surface portions coacting with confronting surface portions of the cavity to tightly grip the opposite lateral surfaces of the pair of hasp end portions within the cavity when an attack wedge-like tool is driven against the rear of the lock body into engagement with rearwardly projecting end portions of the collar member.

Padlock having knuckle type anti-wedge-attack structure

A high security padlock for use with a pair of companion locking bars having apertured hasp end portions to be disposed in aligned abutment and locked together, the padlock comprising a padlock body having a rearwardly opening cavity to receive the aligned abutting hasp end portions therein and the padlock including a shackle extending through said cavity to pass through a pair of aligned apertures in the hasp end portions, and a lock mechanism with the padlock body, together with a wedge attack resisting saddle wedge device shaped to surround three sides of the pair of aligned hasp end portions having a portion disposed in the rearwardly opening cavity of the lock body and portions protruding rearwardly beyond the rear surface of the lock body. The saddle wedge device has ramp surfaces along one side thereof coactive with inclined cam surfaces of the cavity to impart a component of lateral movement to the device when an attack wedge-like tool is driven against the rear of the lock body into engagement with rearwardly projecting end portions of the device and cause surfaces of the device and of the cavity to tightly grip the hasp end portions against withdrawal.

Padlock having wedge device for resisting destructive wedge attack

A high security padlock for use with a pair of companion locking bars having apertured hasp end portions to be disposed in alined abutment and locked together, the padlock comprising a padlock body having a rearwardly opening cavity to receive the alined abutting hasp end portions therein and the padlock including a shackle extending through said cavity to pass through a pair of alined apertures in the hasp end portions, and a lock mechanism with the padlock body, together with wedge-attack-resisting wedge members flanking opposite sides of the pair of alined hasp end portions each having a front portion disposed in the rearwardly opening cavity of the lock body and rear portions protruding rearwardly beyond the rear surface of the lock body. The wedge members have shaped surfaces coactive with surfaces of the cavity to impart a component of lateral movement to the wedge members when an attack wedge-like tool is driven against the rear of the lock body into engagement with the rearwardly projecting end portions and cause surfaces of the wedge members to tightly grip the hasp end portions against withdrawal.

Growing community of inventors

Nicholasville, KY, United States of America

James C Miller