Torque sensing mechanism

Claim 1

IN A TORQUE WRENCH A WORK ENGAGING ELEMENT, A ROD RIGIDLY ATTACHED TO SAID ELEMENT AND EXTENDING RADIALLY THEREFROM, A SCALE SUPPORTED ON SAID ROD, AN INDICATING ARM SECURED TO SAID ELEMENT AND HAVING A POINTER PORTION MOVABLE OVERLYING SAID SCALE, A SUPPORT ADJACENT SAID SCALE AND A SENSING MEANS ADJUSTABLY CARRIED BY SAID SUPPORT, SAID SENSING MEANS COMPRISING A HOUSING AND MEANS FOR MOVABLY POSITIONING SAID HOUSING AT A VARIETY OF POINTS ON SAID SUPPORT, A PLUNGER MEMBER ON SAID HOUSING, A FINGER MEMBER PIVOTALLY CARRIED BY SAID PLUNGER, YIELDING MEANS POSITIONED BETWEEN SAID PLUNGER AND SAID HOUSING TO URGE SAID PLUNGER OUTWARDLY FROM SAID HOUSING, HOOK MEANS ON SAID FINGER, A SECOND YIELDING MEANS POSITIONED TO URGE SAID HOOK MEANS INTO ENGAGEMENT WITH SAID HOUSING WHEN SAID PLUNGER IS IN ITS INNERMOST POSITION IN SAID HOUSING, SAID POINTER BEING MOVABLE INTO ENGAGEMENT WITH SAID FINGER TO RELEASE SAID HOOK MEANS AND TO FREE SAID PLUNGER FOR ACTUATION BY SAID FIRST YIELDING MEANS.