Combination lock with scrambler

Details Combination lock with scrambler Combination lock with scrambler

1978-02-06

1979-04-03

Wolfe, Robert L.

Locks

Operating mechanism

Combination

E05B 3700

Patent

active

041470451

ABSTRACT:
A conventional rotatable tumbler combination lock of the type having notched rotatably mounted tumblers, a notched rotatably mounted drive plate, a bolt plate and bolt movable between locked and unlocked positions, a lever pivotally mounted to said bolt plate and having a fence for engagement with said tumbler notches and a dog for engagement with said drive plate to allow movement of bolt to said unlocked position, the improvement comprising including a scrambler mechanism which includes a rod having one end rotatably mounted to the bolt plate and another end adapted for engagement of detents on the tumblers. The rod engages said detents when the lock is in the open position and when the lock is closed, the rod spins the tumblers and the engagement of the dog with the drive plate notch and the fence with the tumbler notches is upset.

REFERENCES:
patent: 2244152 (1941-06-01), Hamilton
patent: 2436859 (1948-03-01), Eras
patent: 3339302 (1967-09-01), Miller
patent: 3447348 (1969-06-01), Davenbaugh
patent: 3481167 (1969-12-01), Barner

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