Torsion balance

Claim 1

A TORSION BALANCE WHICH COMPRISES A BASE; A SKELETON COMPRISING A MIDDLE TRUSS FIXEDLY MOUNTED ON SAID BASE HAVING AN UPPER AND A LOWER BAND, TWO END TRUSSES HAVING UPPER AND LOWER BANDS, AN UPPER BEAM AND A LOWER BEAM; MIDDLE TRUSS BAND MOUNTING MEANS MOUNTING SAID UPPER BEAM INTERMEDIATE ITS END TO SAID UPPER MIDDLE TRUSS BAND AT A FULCRUM POINT AND MIDDLE TRUSS BAND MOUNTING MEANS MOUNTING SAID LOWER BEAM INTERMEDIAT ITS ENDS TO SAID TURSS BAND MOUNTING MEANS EACH COMPRISING A BAND RECEIVING MEMBER TO RECEIVE THE BAND AND A REMOVABLE CLAMPING MEMBER CLAMPING THE BAND TO SAID RECEIVING MEMBER, SAID BAND RECEIVING MEMBER BEING ADJUSTABLY MOVABLE LONGITUDINALLY ON SAID BEAMS FOR ADJUSTING THE LENGTH OF THE LEVER ARMS ON EACH SIDE OF SAID MIDDLE TRUSS BANDS FOR CORRECTING LOAD DEFLECTION ERROR, MEANS MOUNTING THE ENDS OF SAID UPPER BEAM TO SAID UPPER END TRUSS BANDS, MEANS MOUNTING THE ENDS OF SAID LOWER BEAM TO SAID LOWER END TRUSS BANDS, A VANE MEMBER SECURED TO SAID SKELETON AT ONE END THEREOF AT A PLACE REMOTE FROM THE MIDDLE TRUSS AND HAVING AN AMPLITUDE OF MOVEMENT CORRESPONDING TO THE ROTATIONAL MOVEMENT OF SAID SKELETON ABOUT SAID FULCRUM POINTS, AND MEANS FOR TRANSLATING THE MOVEMENT OF SAID VANE MEANS IN MAGNIFIED FORM TO A VISUAL INDICATOR DEVICE FOR INDICATING WEIGHT, THE LENGTHS OF SAID ARMS ON THE SAME SIDE OF SAID MIDDLE TRUSS AS SAID VANE BEING ADJUSTED SO THAT THEIR LENGTHS ARE SHORTER THAN THE LENGTHS OF SAID ARMS ON THE OTHER SIDE OF SAID MIDDLE TRUSS, THE LENGTHS OF SAID ARMS ON SAID OTHER SIDE OF SAID MIDDLE TRUSS BEING ADJUSTED SO THAT THEY ARE LONGER THAN SAID SHORTER ARMS BY AN AMOUNT WHICH PRODUCES A TORQUE SUFFICIENT TO CAUSE A ROTATION OF SAID BEAMS ABOUT THEIR FULCRUM POINTS IN A DIRECTIN OPPOSITE TO AND EQUAL IN MAGNITUDE TO MOTION PRODUCED BY THE SAG OF SAID SKELETON WHEN A LOAD TO BE WEIGHED IS APPLIED THERETO.