Electronic coin tester with a device to prevent fraudulent manipulations

摘要

An electronic coin tester which is constructed such that coins found to be good by the testing electronics cannot be passed several times through the coin path with fraudulent intent. This happens by a stop lever which is connected to a microswitch and which blocks the coin path in a timed manner or clamps a coin, e.g. one attached to a thread, when it is pulled back into the coin path.