High voltage television test probe having an adjustable frequency blinker indicator

Claim 1

A TELEVISION HIGH VOLTAGE TESTING PROBE, COMPRISING, IN COMBINATION, A NARROW ELONGATED INSULATING TUBE TAPERED AT ONE END AND TERMINATING WITH A SMALL OPENING, AN ENLARGED HOLLOW INSULATING HOUSING CONNECTED TO THE OTHER END OF SAID TUBE AND HAVING A WINDOW AND AN INDEX NEAR ITS OPEN END, A CONDUCTIVE POINTED CONTACT ROD DISPOSED WITHIN THE END OF SAID TUBE AND PROJECTING THROUGH THE SMALL OPENING THEREOF, A MULTI-MEGOHM FIXED RESISTANCE CARTRIDGE HAVING AN END LEAD AND DISPOSED WITHIN SAID TUBE AND CONNECTED AT ITS OTHER END IN CONDUCTING RELATION WITH SAID ROD, AN INSULATING RETAINER WALL DISPOSED IN SAID ENLARGED HOUSING ADJACENT SAID CARTRIDGE END LEAD AND HAVING ACCES THERETHROUGH FOR SAID CARTRIDGE LEAD, A VARIABLE RESISTOR HAVING A FIXED CONNECTION, AN OPEN END CONNECTION, AND A VARIABLE RESISTANCE CONNECTION, AND A ROTATABLE RESISTANCE-VARYING SHAFT PROJECTING AXIALLY OUT OF SAID HOUSING AND MOUNTED IN SAID HOUSING BEHIND SAID RETAINER WALL AND CONNECTED TO SAID CARTRIDGE LEAD AT ITS FIXED CONNECTION, A JACK RECEPTACLE MOUNTED IN THE WALL OF SAID HOUSING AND HAVING AN INTERNAL JACK CONNECTION, A FIXED FUSE RESISTOR CONNECTED IN SERIES WITH SAID JACK CONNECTION AND THE VARIABLE RESISTANCE CONNECTION OF THE VARIABLE RESISTOR, A KNOB ATTACHED TO THE PROJECTING SHAFT END OF SAID VARIABLE RESISTOR AND CALIBRATED TO INDICATE, IN CONJUNCTION WITH THE INDEX ON THE HOUSING, THE HIGH VOLTAGE AT THE CONTACT ROD,