Coin-controlled compressed air dispenser

Claim 1

A COIN-CONTROLLED COMPRESSED AIR DISPENSER FOR CONTROLLING THE ENERGIZATION OF AN ELECTRIC-MOTOR-DRIVEN AIR COMPRESSOR, SAID DISPENSER COMPRISING A HOUSING, A COIN-CONTROLLED SWITCH MOUNTED ON SAID HOUSING, A POWER RELAY HAVING AN OPERATING COIL AND A FIRST NORMALLY-OPEN POWER SWITCH CLOSABLE IN RESPONSE TO THE ENERGIZATION OF SAID OPERATING COIL AND CONNECTED IN ENERGIZATION-CONTROLLING RELATIONSHIP WITH THE AIR COMPRESSOR MOTOR, A NORMALLY-CLOSED SOLENOIDAL AIR VALVE OPENABLE IN RESPONSE TO THE ENERGIZATION OF SAID POWER RELAY OPERATING COIL, AN AIR DISPENSING COUPLING DISPOSED EXTERNALLY OF SAID HOUSING, AN AIR DISPENSING CONDUIT CONNECTING SAID AIR VALVE TO SAID DISPENSING COUPLING, AN AIR SUPPLY CONDUIT HAVING A SUPPLY COUPLING ARRANGED FOR CONNECTION TO THE AIR COMPRESSOR AND COMMUNICATING WITH SAID AIR DISPENSING CONDUIT BY WAY OF SAID AIR VALVE, AP RESSURE-RESPONSIVE SWITCH HAVING A NORMALLY-CLOSED SWITCH BLADE AND HAVING A MOTIVE DEVICE COMMUNICATING WITH SAID AIR SUPPLY CONDUIT AND OPENABLE IN RESPONSE TO THE ATTAINMENT OF A PREDETERMIZNED PRESSURE THEREIN, AND A STEPPING RELAY HAVING A STEPPING SWITCH CONNECTED IN ENERGIZATION CONTROLLING RELATIONSHIP WITH SAID POWER RELAY OPERATING COIL BY WAY OF SAID PRESSURE-RESPONSIVE SWITCH, SAID STEPPING RELAY HAVING A STEPPING SWITCH OPERATING COIL CONNECTED IN ENERGIZATION-CONTROLLED RELATIONSHIP WITH SAID COIN-CONTROLLED SWITCH AND RESPONSIVE TO A PREDETERMINED NUMBER OF COIN-ACTUATED CLOSING OF SAID COIN-CONTROLLED SWITCH FOR SHIFTING SAID STEPPING SWITCH A CORRESPONDING NUMBER OF STEPS INTO CIRCUIT-CLOSING RELATIONSHIP WITH SAID POWER RELAY OPERATING COIL.