Locks – Special application – For closures
Patent
1975-07-07
1977-07-26
Gilliam, Paul R.
Locks
Special application
For closures
70 82, 70120, 292 37, 292 39, E05B 5900
Patent
active
040374408
ABSTRACT:
A locking device mountable within a door in a door frame, comprises a casing including a pair of side plates, a toothed-wheel rotatably disposed between the side plates, and a plurality of locking bars coupled to the toothed-wheel and projectable thereby into locking engagement with the door frame. The toothed-wheel is formed with a cam surface for each locking bar, each locking bar carrying at its inner end a cam follower movable along the respective cam surface of the toothed-wheel. The side plates are formed with guiding slots for each locking bar guiding the movement thereof such that the rotation of the toothed-wheel in one direction projects the outer ends of the locking bars from the door into locking engagement with the door frame, and the rotation of the toothed-wheel in the opposite direction withdraws the locking bars into the door.
According to a further feature, the locking device is a rim lock actuated by a key and mountable adjacent to one side of the door, one of the locking bars being a locking bolt projectable from and withdrawable into that side of the door, the remaining locking bars being locking rods projectable from and withdrawable into the remaining three sides of the door.
REFERENCES:
patent: 738280 (1903-09-01), Bell et al.
patent: 2473065 (1949-06-01), Miller
patent: 3776581 (1973-12-01), Ross, Jr.
Assaraf Simon
Shabtai Joseph
Barish Benjamin J.
Dorner Kenneth J.
Gilliam Paul R.
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