Automatically locking crossbolt deadlock

Details Automatically locking crossbolt deadlock Automatically locking crossbolt deadlock

E - Fixed Constructions

05

C

292/42

E05C 1/16 (2006.01) E05B 63/12 (2006.01)

Patent

CA 1058245

ABSTRACT An automatically locking crossbolt deadlock having a crossbolt yieldingly urged toward locking engagement with a cooperating strike when the deadlock and strike are mounted on a door and door frame respectively. An actuator lever releas- ably holds the crossbolt in a retracted or unlocking position while the door is open, and includes a portion which engages the strike, upon closing of the door, to cause the actuator lever to automatically release the crossbolt for movement into locking engagement with the strike. A cam and a drive lever operate to move the crossbolt out of engagement with the strike to permit opening of the door, and a latch is engageable with the crossbolt, when the crossbolt is moved to its retracted position, to hold the same retracted until the door is opened and the actuating lever engages the crossbolt.

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