Locks – Portable – Padlocks
Patent
1975-04-23
1977-06-28
Wolfe, Robert L.
Locks
Portable
Padlocks
70311, E05B 3704
Patent
active
RE0292770
ABSTRACT:
A combination lock of the exposed shackle type is disclosed. The shackle is held in its locked position by locking means that are released when a fence member is moved into gates located in the periphery of two tumbler wheels. The tumbler wheels are positioned for the gates to receive the fence by a dial and keyed shaft, after which the key is moved axially of the shaft out of driving connection with the tumbler wheels and into driving connection with the fence means. Rotation of the dial moves the fence means to release the shackle. The tumbler wheels have a rim and hub that are connected through a friction clutch type connection to allow the rim to be held while the hub is rotated. This allows the combination of the lock to be changed, when the lock is open, by actuating a lever mounted externally on the side of the lock housing that holds the fence means in engagement with the gates in the periphery of the tumbler wheels while the hubs are rotated by the dial. If the combination is forgotten, apparatus is provided to locate the rims in a predetermined position from which position a master combination can be used to open the lock.
REFERENCES:
patent: 1551952 (1925-09-01), Hanflig
patent: 2245741 (1941-06-01), Winning
patent: 2925726 (1960-02-01), Miller
patent: 2966788 (1961-01-01), Amo
patent: 3170316 (1965-02-01), Miller
patent: 3196643 (1965-07-01), Moss
patent: 3410121 (1968-11-01), Morin
Harrington Richard P.
Harrington Russell J.
Thompson Jennings B.
Wolfe Robert L.
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