Mortise lock adaptation to key-removable cores

Details Mortise lock adaptation to key-removable cores Mortise lock adaptation to key-removable cores

1978-08-10

1980-04-01

Wolfe, Robert L.

Locks

Operating mechanism

Key

70380, 70DIG60, E05B 910, E05B 1704

Patent

active

041955048

ABSTRACT:
An adaptation for a mortise lock having a double-ended primary lock "cylinder" of "keyhole" cross-section mounted through a conforming opening in the mortise lock case, provides for use of key-removable lock cores and increases security by preventing removal of the lock cylinder except after removal of a core with a special control key. Two key-removable cores are mounted in chambers at opposite ends of a housing which fits through the cylinder-receiving opening of the mortise lock case. A bolt-actuating cam between the chambers lies within the case and is alternatively engaged by shuttle throw plug members respectively moved to engaged position by thrust of a key in one of the cores and is operated by rotation of such key. The cores require a special control key for removal and are shaped or mouned so as to project laterally from the lock cylinder and thereby to block passage of the cylinder out of the conforming opening of the lock case until removed by a control key.

REFERENCES:
patent: 1564463 (1925-12-01), Best
patent: 3945299 (1976-03-01), Frank

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