Patent ID: 8534442

Claim:
A mechanical coin checking device, comprising: a coin channel including a running rail for a coin to roll on; a coin acceptance shaft connected to the coin channel; a blocking element adapted to pivot into the coin acceptance shaft if no coin is present and which, due to the weight thereof, is adapted to pivot, after entry of a coin into the acceptance shaft, and to release the acceptance shaft and block the coin channel at the same time; a confirmation photoelectric barrier which is disposed in the acceptance shaft, such that a coin inserted into the coin channel reaches the confirmation photoelectric barrier after it has already passed the blocking element, wherein the confirmation photoelectric barrier is adapted to detect the passage of a coin; an optical sensor adapted to detect the position of the blocking element; and a control unit which is connected to the confirmation photoelectric barrier and to the optical sensor and is disposed in the region of the acceptance shaft, the control unit being adapted to receive signals of the confirmation photoelectric barrier and of the optical sensor and to produce a credit signal as a function of the signals of the confirmation photoelectric barrier and of the optical sensor, the credit signal indicating an acceptance of a coin and a passage of the accepted coin through the acceptance shaft.