Suspended scaffolding

Claim 1

THE COMBINATION WITH A BUILDING STRUCTURE HAVING SIDE WALL MEANS AND A SUBSTANTIALLY HORIZONTAL SUPPORTING SURFACE LOCATED AT AN ELEVATION ABOVE THE GROUND, OF A SUSPENDED SCAFFOLDING COMPRISING SPACED PARALLEL GUIDEWAYS PROVIDED ON SAID SURFACE AND EXTENDING ALONG SAID SIDE WALL MEANS, A TRUCK HAVING WHEELS MOUNTED ON SAID GUIDEWAYS, A HORIZONTAL MAIN SHAFT MOUNTED ON SAID TRUCK AND LOCATED BETWEEN AND SUBSTANTIALLY PARALLEL WITH SAID GUIDEWAYS, A PAIR OF SPACED SUPPORTING ARMS HAVING FIRST ENDS CONNECTED WITH SAID SHAFT AND SECOND ENDS SPACED FROM SAID TRUCK, TRANSVERSE CONNECTING MEANS EXTENDING BETWEEN AND CONNECTED WITH THE SECOND ENDS OF SAID ARMS, A PLATFORM, DEFLECTING MEANS MOUNTED ON SAID TRANSVERSE CONNECTING MEANS, WINCH MEANS PROVIDED ON SAID TRUCK AND COMPRISING CABLE MEANS PASSING OVER SAID DEFLECTING MEANS AND HAVING ENDS CONNECTED WITH SAID PLATFORM SO AS TO RAISE AND TO LOWER THE PLATFORM WHEN RESPECTIVELY COLLECTED AND PAID OUT BY SAID WINCH MEANS, SAID WINCH MEANS FURTHER COMPRISING ROTARY DRUM MEANS MOUNTED ON SAID TRUCK AND CONNECTED WITH SAID CABLE MEANS, EXTERNALLY THREADED SPINDLE MEANS MOUNTED ON SAID TRUCK AND SUBSTANTIALLY PARALLEL WITH SAID DRUM MEANS, INTERNALLY THREADED MEANS MESHING WITH SAID SPINDLE MEANS, SHEAVE MEANS MOUNTED ON SAID INTERNALLY THREADED MEANS, AND MEANS FOR DRIVINGLY CONNECTING SAID DRUM MEANS WITH SAID SPINDLE MEANS SO THAT SAID INTERNALLY THREADED MEANS TRAVELS BACK AND FORTH ALONG SAID SPINDLE MEANS WHEN SAID DRUM MEANS ROTATES IN CLOCKWISE AND ANTICLOCKWISE DIRECTIONS, SAID CABLE MEANS PASSING FROM SAID DRUM MEANS OVER SAID SHEAVE MEANS AND TO SAID DEFLECTING MEANS, AND MEANS FOR PIVOTING SAID ARMS AND THE PLATFORM ABOUT THE AXIS OF SAID SHAFT BETWEEN A FIRST POSITION IN WHICH THE PLATFORM IS MOVED OUTWARDLY AND BEYOND SAID SURFACE AT ONE SIDE OF SAID TRUCK AND MAY BE RAISED AND LOWERED ALONG SAID SIDE WALL MEANS, AND A SECOND POSITION IN WHICH THE PLATFORM IS LOCATED ABOVE SAID SURFACE AND AT THE OTHER SIDE OF SAID TRUCK AFTER MOVING IN AN ARC ABOVE THE TRUCK WHEREBY THE PLATFORM MAY BE ACCESSIBLE TO A PERSON STANDING ON THE SUPPORTING SURFACE FOR MOUNTING SAID PLATFORM FROM THE SUPPORTING SURFACE, AND THE SUPPORTING SURFACE MAY BE ACCESSIBLE TO A PERSON STANDING ON SAID PLATFORM FOR ALIGHTING FROM SAID PLATFORM ONTO THE SUPPORTING SURFACE.