Exit lock having cassette mechanism

Details Exit lock having cassette mechanism Exit lock having cassette mechanism

1975-03-24

1976-09-21

Gilliam, Paul R.

Locks

Special application

For closures

70214, 70436, F05B 6510, B60R 2502, F05B 3904

Patent

active

039811646

ABSTRACT:
An emergency exit lock of vertical rod type has an active case which contains a latch bolt retracting mechanism operable at all times by a panic-bar. A key-controlled cassette mechanism releasably retained in the active case cooperates with the latch bolt retracting mechanism to provide an additional lock operating function. The cassette mechanism may be assembled to provide a latch holdback function, to lock or disable and unlock or enable a manually operated outside operating member, or to unlock or enable an outside operating member normally maintained in locked or disabled condition when the key is removed.

REFERENCES:
patent: 649087 (1900-05-01), Wade et al.
patent: 1394475 (1921-10-01), Crosby
patent: 2854838 (1958-10-01), Foster
patent: 2962889 (1960-12-01), McConnell
patent: 3324692 (1967-06-01), Welch

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