Adjustment-indicating variable resistor

Claim 1

AN ADJUSTMENT-INDICATING VARIABLE RESISTOR COMPRISING: FIRST MEANS, INCLUDING A RESISTANCE ELEMENT DEVICE HAVING N HELICALLY-ARRANGED CONVOLUTIONS OF ELECTRICALLY ACTIVE RESISTANCE ELEMENT BETWEEN THE LOW-POTENTIAL AND HIGH-POTENTIAL ELECTRICAL ENDS THEREOF, A CONTACT, AND ROTARY MEANS ARRANGED FOR ROTATION THROUGH N REVOLUTIONS TO CAUSE RELATIVE ROTATION BETWEEN SAID ELEMENT AND SAID CONTACT TO CAUSE THE CONTACT TO WIPE FROM ONE ELECTRICAL END OF SAID ELEMENT TO THE OTHER THEREOF TO VARY THE RESISTANCE EXHIBITED BETWEEN SAID CONTACT AND AN ELECTRICAL END OF SAID ELEMENT; SECOND MEANS, INCLUDING INDICIA-BEARING MEANS BEARING A CIRCULAR ARRAY OF INDICIA INCLUDING N NUMERICAL INDICIA INCLUDING A ZERO, SAID SECOND MEANS INCLUDING POWER-TRANSMISSION MEANS AND INDICATOR MEANS COMPRISING FIRST AND SECOND INDICATOR DEVICES ARRANGED FOR VISUAL OBSERVATION AND DISPOSED CLOSELY ADJACENT TO SAID INDICIA-BEARING MEANS AND ARRANGED WITH SAID INDICIA-BEARING MEANS FOR RELATIVE ROTATION THEREBETWEEN WHEREBY TO PROVIDE INDICATIONS OF THE EXTENT OF ROTATION OF SAID ROTARY MEANS, RELATIVE ROTATION BETWEEN SAID FIRST INDICATOR DEVICE AND SAID INDICIABEARING MEANS BEING AT THE RATE OF ONE REVOLUTION FOR EACH CONVOLUTION OF RESISTANCE ELEMENT WIPED BY SAID CONTACT, AND RELATIVE ROTATION BETWEEN SAID SECOND INDICATOR DEVICE AND SAID INDICIA-BEARING MEANS BEING RESTRICTED BY MEANS INCLUDED IN SAID SECOND MEANS TO SLIGHTLY LESS THAN 360* FOR N CONVOLUTIONS OF RESISTANCE ELEMENT WIPED BY SAID CONTACT; AND THIRD MEANS FIXING SAID SECOND MEANS RELATIVE TO SAID FIRST MEANS SO THAT WHEN SAID CONTACT IS AT THE LOWPOTENTIAL ELECTRICAL END OF SAID ELEMENT SAID FIRST INDICATOR DEVICE IS DIRECTED TO SAID ZERO AND SAID SECOND INDICATOR IS DIRECTED SLIGHTLY AHEAD OF SAID ZERO, WHEREBY TO PROVIDE AN UNAMBIGUOUS INDICATION THAT SAID VARIABLE RESISTOR IS ADJUSTED TO THE LOW-POTENTIAL END OF ITS RANGE OF ADJUSTMENT.