Programme selection circuits with coin slot machines for self-service launderettes

Claim 1

A PROGRAM SELECTION CIRCUIT CHANGING DEVICE FOR SELF-SERVICE AUTOMATIC LAUNDRY MACHINES HAVING COIN RELAYS AND PROGRAMMING RELAYS FOR OPERATING AT PREDETERMINED COIN VALUES, EACH OF SAID PROGRAMMING RELAYS BEING ADAPTED TO CONTROL THE CYCLE OF WASHING OPERATIONS AND ALSO BEING CAPABLE OF ENERGIZING THE MACHINE UPON THE DEPOSIT OF COINS IN SAID MACHINE OF A VALUE EQUAL TO THE VALUE REQUIRED FOR A PREDETERMINED PROGRAM, COMPRISING A TERMINAL BAR HAVING A LONGITUDINAL SLOT, CONTACT MEMBERS MOUNTED IN SAID SLOT, CERTAIN OF SAID CONTACT MEMBERS BEING ELECTRICALLY CONNECTED TO SAID COIN RELAYS AND OTHER CONTACT MEMBERS BEING ELECTRICALLY CONNECTED TO SAID PROGRAMMING RELAYS, AN INSULATING PLATE ONE OF THE EDGES OF WHICH IS ADAPTED TO BE REMOVABLY MOUNTED IN THE SLOT IN SAID TERMINAL BAR, PRINTED CIRCUIT CONDUCTORS ON THE FRONT AND REAR OF SAID PLATE WITH THE CONDUCTORS ON ONE SIDE OF THE PLATE CROSSING THE CONDUCTORS ON THE OTHER SIDE OF THE PLATE, AND FORMING SPACED CROSSING POINTS. CONTACT MEMBERS ON OPPOSITE SIDES OF SAID PLATE ALONG SAID ONE EDGE SPACED TO CORRESPOND TO THE SPACING OF SAID CONTACT MEMBERS WHEREBY INSERTION OF SAID PLATE IN SAID TERMINAL BAR WILL ESTABLISH ELECTRICAL CONNECTIONS WITH THE PRINTED CONDUCTORS ON OPPOSITE SIDES OF SAID PLATE AND CONNECTORS EXTENDING THROUGH SAID PLATE AT CERTAIN OF SAID CROSSING POINTS TO ELECTRICALLY CONNECT CERTAIN OF THE PRINTED CONDUCTORS ON ONE SIDE OF THE PLATE WITH CERTAIN OF THE CONDUCTORS ON THE OTHER SIDE OF THE PLATE.