Check-actuated control mechanisms – Including noncontacting – relatively movable parts connected...
A two coin operated lock unit for effecting locking of a cabinet door, the improvement featuring the utilization of an improved coin selector mechanism adapted for adjustment to accommodate coins of differing denominations and for permitting free discharge of coins from the lock unit when of a diameter smaller than the diameter of a coin of a given denomination for which the selector mechanism is set, regardless of whether such coins are deposited before or after a first deposited coin of such given denomination.
patent: 3249197 (1966-05-01), Smith et al.
patent: 3938640 (1976-02-01), Stackhouse et al.
Barth Douglas A.
Chester Richard J.
American Locker Security Systems, Inc.
Tollberg Stanley H.
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