Locks – Portable – Padlocks
Patent
1980-01-11
1981-12-01
Wolfe, Robert L.
Locks
Portable
Padlocks
70303R, E05B 3708
Patent
active
043029558
ABSTRACT:
A combination lock and a length of steel cable of chain connected with the ends of said lock is disclosed. The lock comprises a bolt inserted in a casing having a shaft unrotatably disposed therein. Adjacent to one end of the shaft, a knob is mounted. Three step wheels, each having a peripheral recess, are also loosely mounted on the shaft. The step wheels are provided with a projection or projections on one or both sides for transmitting the movements of the knob. Adjacent to the first step wheel which is farthest from the knob, a retaining wheel is mounted on the shaft. The retaining wheel is provided with a recess at its periphery and a projection at one side. The projection is inserted in either one of five recesses provided at one side of the first step wheel whereby five different code numbers will be obtained without changing the step wheels. A click mechanism is arranged between the shaft and the knob. Adjacent to the retaining wheel, a retainer of an inverted "C" form having laterally extending end portions is slidably mounted across the shaft. In the locked state, the inner end portion of the retainer engages with the recess of the retaining wheel while the outer end portion protrudes from the casing by the action of a spring whereby the knob can not be turned. This lock has no numeral indicating means and is unlocked by listening to clicking sounds.
REFERENCES:
patent: 200617 (1878-02-01), King
patent: 1468027 (1923-09-01), Lindberg
patent: 3999408 (1976-12-01), Kawakami
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