Scaffold hanger for overhead highway sign trusses

Claim 1

A TRUSS ENGAGING SCAFFOLD HANGER COMPRISING, A CYLINDRICAL SUSPENSION MEMBER, A HANGER MEMBER TELESCOPICALLY ENGAGEABLE AT ITS LOWER END WITH SAID SUSPENSION MEMBER AND HAVING A TRUSS ENGAGING HOOK ON ITS UPPER END, A FIRST CONNECTING AND SUPPORTING PIN PASSED THROUGH THE TELESCOPED ENDS OF SAID MEMBERS AND THREADEDLY ENGAGED WITH THE OUTER-MOST OF THE MEMBERS, ONE OF SAID MEMBERS HAVING A PLURALITY OF SPACED HOLES THERETHROUGH SELECTIVELY RECEIVING SAID FIRST PIN, A RETAINER SLEEVE SLIDABLY AND ROTATABLY ENGAGED AROUND SAID SUSPENSION MEMBER AND HAVING MEANS ADAPTED TO SELECTIVELY CLAMP THE SLEEVE TO THE SUSPENSION MEMBER, AN ARM PROJECTING FROM THE SIDE OF SAID RETAINER SLEEVE AND FORMING A LATERALLY DIRECTED SLIDEWAY, A TRUSS CHORD HOOK MEMBER HAVING ONE END SLIDABLY GUIDED IN SAID SLIDEWAY WITH A CHORD ENGAGING ARM PROJECTING VERTICALLY THEREFROM, TUBULAR ELEMENTS SECURED IN ALINED RELATION ON SAID HOOK MEMBER AND SAID ARM, A SECOND PIN PASSED THROUGH SAID TUBULAR ELEMENTS AND THREADEDLY ENGAGED WITH ONE OF THEM TO RECIPROCATE SAID HOOK MEMBER ON SAID ARM AND THE SLIDEWAY THEREON, A PLATFORM SUPPORTING SLEEVE MEMBER SLIDABLY AND ROTATABLY RECEIVED ON SAID SUSPENSION MEMBER, A THIRD PIN PASSED THROUGH SAID SUPPORTING SLEEVE MEMBER AND SAID SUSPENSION MEMBER AND THREADEDLY ENGAGED WITH ONE OF THE MEMBERS HAVING A PLURALITY OF VERTICALLY SPACED HOLES FORMED THEREIN SELECTIVELY RECEIVING SAID THIRD PIN, AND A SCAFFOLD SUPPORTING BRACKET CARRIED BY AND PROJECTING LATERALLY FROM SAID SUPPORTING SLEEVE MEMBER, SAID PINS HAVING MANUALLY OPERABLE HANDLES THEREON.