Coin-operated gaming machine - has multi-position difference counter comprising individual electro-mechanical pulse counter decades

摘要

The lifting magnet of the low value decade obtains voltage during the transition of the counter wheel from zero to nine via a contact only if the contact is closed by the lifting magnet as the carry of the associated higher value decade takes place. The safety circuit between the units and the tens decades is made ineffective via a contact by another contact which is closed when the coin is returned. An arrangement of contacts and cam paths prevent the low-value decade from continuing to count, if the higher decade has not been operated during the carry.