Control circuit arrangement for electric typewriter

Claim 1

CONTROL CIRCUIT ARRANGEMENT FOR AN ELECTRIC TYPEWRITER HAVING ELECTROMAGNETICALLY ACTUATABLE TYPE LEVERS AND KEY OPERATED SELECTOR SWITCHES FOR SELECTING THE TYPE LEVER TO BE ACTUATED, COMPRISING, IN COMBIATION, A. MAIN ELECTROMAGNET MEANS FOR ACTUATING ANY OF THE TYPE LEVERFS DEPENDING UPON DEPRESSION OF A CORRESPONDING KEY AND INCLUDING A PLURALITY OF ELECTRICAL SELECTOR MEANS INDIVIDUALLY ACTUATABLE BY THE CORRESPONDING SELECTOR SWITCH FOR CAUSING RESPECTIVELY CORRESPONDING TYPE LEVERS TO BE ACTUATED; B. FIRST CONTROL RELAY MEANS FOR CAUSING, UPON ENERGIZATION THEREOF, ENERGIZATION TO SAID MAIN ELECTROMAGNET MEANS; C. MAIN RELAT MEANS ARRANGED TO BE ENERGIZED SIMULTANEOUSLY WITH THE ACTUATION OF ANY SINGLE ONE OF SAID PLURALITY OF ELECTRICAL SELECATOR MEANS, AND FOR CAUSING, UPON ENERGIZATION THEREOF, ENERGIZATION OF SAID FIRST CONTROL RELAY MEANS; D. ELECTRICAL MEANS FOR DEENERGIZING SAID FIRST CONTROL RELAY IMMEDIATELY AFTER A TYPE LEVER HAS BEEN ACTUATED BY SAID MAIN ELECTROMAGNET MEANS; E. SECOND CONTROL RELAY MEANS CONNECTED TO BE ENERGIZABLE WHEN SAID MAIN RELAY MEANS AND SAID FIRST CONTROL RELAY MEANS ARE SIMULTANEOUSLY IN ENERGIZED CONDITION AND INCLUDING MEANS FOR DEENERIGIZING SAID FIRST CONTROL RELAY MEANWHILE SIMULTANEOUSLY HOLDING SAID SECOND CONTROL RELAY MEANS ENERGIZED, AFTER SAID FIRST MAIN REALY MEANS IS DEENERGIZED, AS LONG AS SAID MAIN RELAY MEANS IS IN ENERGIZED CONDITION AFTER ENERGIZATION OF SAID SECOND CONTROL RELAY MEANS; AND F. ELECTRICAL MEANS OPERABLE IN PARALLEL WITH SAID MAIN RELAY MEANS FOR PREVENTING ENERGIZATION OF SAID FIRST CONTROL RELAY MEANS BY SAID MAIN RELAY MEANS WHEN MORE THAN ONE OF SAID ELECTRICAL SELECTOR MEANS IS ENERGIZED SIMULTANEOUSLY.