Count mechanism for coin dispensing machine

Details Count mechanism for coin dispensing machine Count mechanism for coin dispensing machine

G - Physics

07

D

235/4, 340/77

G07D 9/04 (2006.01)

Patent

CA 1181726

ABSTRACT A count mechanism for a dispensing machine which delivers coins in a single file along a track has a star wheel in the path of travel of the coins. The star wheel is indexed one point for each coin which passes it. The star wheel can be positively halted against rotation by a latch which engages a point on the wheel and which is held disen- gaged by a first solenoid. A second solenoid assists in disengaging the latch from the star wheel. A spring biased pawl rides the periphery of the star wheel between points to prevent free rotation. The star wheel is provided with spaced reflective areas on its top surface and a pair of spaced optical sensors detect the presence and absence of re- flective surfaces as the reflective areas pass beneath the sensors. The optical sensors generate a pair of out-of-phase pulses which are employed to count the coins. An apparatus and method are also disclosed to test for dirty conditions of the star wheel or optical sensors by comparing logic signals produced in two logic levels.

400848

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