Disengaging spindle locking mechanism

Details Disengaging spindle locking mechanism Disengaging spindle locking mechanism

1977-10-20

1978-08-22

Bonck, Rodney H.

Closure fasteners

Bolts

Sliding

70472, 70149, 70218, 29216916, 2923365, 292DIG27, E05B 5506

Patent

active

041084829

ABSTRACT:
A disengaging spindle locking mechanism for the latch bolt of a mortise type lock is actuated by the locking slide which is normally employed to engage a retractor hub to prevent the hub from being rotated. At the inner end of a split spindle where it is in non-rotatable engagement with the retractor hub there is a cam surface. On the inner end of a locking slide is a cam surface which cams the spindle out of engagement with the hub as hub action is blocked by the slide. Thereafter, should force be applied to the spindle, it will merely spin in place and no damage will be done to the lock mechanism such as might otherwise be done by unauthorized persons to force open the lock.

REFERENCES:
patent: 1387888 (1921-08-01), Holt
patent: 1651018 (1927-11-01), Drees et al.
patent: 1968285 (1934-07-01), Egan
patent: 2030630 (1936-02-01), Gram
patent: 2469601 (1949-05-01), Lee
patent: 3211486 (1965-10-01), Crandell
patent: 3750433 (1973-08-01), Sanders

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