Prison door locking mechanism

Details Prison door locking mechanism Prison door locking mechanism

1975-06-13

1976-06-08

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49449, 49 15, E05F 1134

Patent

active

039614476

ABSTRACT:
A prison door locking mechanism particularly suitable for use with each of a pair of sliding prison doors laterally movable into stacking or overlapping position. The door locking mechanism includes a novel pivotally mounted locking dog having a latch engageable with a door-suspending carriage to lockably restrain carriage movement. The locking dog includes a projecting arm engaged by a rack bar coupled to the carriage to insure deadlock rotation of the locking dog to its locking position.

REFERENCES:
patent: 464947 (1891-12-01), Sparks et al.
patent: 1739897 (1929-12-01), Garber
patent: 1997175 (1935-04-01), Gussack
patent: 3271901 (1966-09-01), Bednar
patent: 3343302 (1967-09-01), Browning et al.
patent: 3426478 (1969-02-01), Sturges et al.

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