Formwork for erecting concrete structures

Claim 1

A FRAMEWORK FOR ERECTING A TOWER-LIKE CONCRETE STRUCTURE OF CIRCULAR, OVAL OR CORNERED CROSS-SECTION, HAVING A STRAIGHT OR CURVED GENERATRIX, SAID FORMWORK BEING SUCCESSIVELY ELEVATED IN INCREMENTS AS THE STRUCTURE IS ERECTED AND COMPRISING, IN COMBINATION: (A) A VERTICALLY EXTENDING, HOLLOW CENTRAL POLE HAVING A PLURALITY OF RADIALLY EXTENDING JIB-ARMS FIXEDLY CONNECTED TO ITS UPPER END AND RADIALLY EXTENDING ADJUSTABLE ARMS FIXEDLY CONNECTED TO ITS LOWER END, SAID ADJUSTABLE ARMS BEING SECURABLE TO THE UPPER PART OF THE PREVIOUSLY COMPLETED PORTION OF THE STRUCTURE, BELOW SAID FORMWORK, FOR SUPPORTING THE SAME, (B) A HOLLOW SLIDER SLIDABLY DISPOSED ABOUT SAID POLE AND HAVING RADIALLY EXTENDING ADJUSTABLE ARMS CONNECTED TO THE FORMWORK SKIN ASSEMBLY DEFINED HEREINAFTER; (C) ELEVATING MEANS CARRIED BY SAID SLIDER AND OPERATIVELY ENGAGED WITH THE OPPOSITE ENDS OF SAID POLE FOR LIFTING THE SLIDER RELATIVE TO THE POLE, AND FOR LIFTING THE POLE RELATIVE TO THE SLIDER; AND (D) A FORMWORK SKIN ASSEMBLY COMPRISING CONNECTED INNER AND OUTER FORMWORK SKINS, EACH OF WHICH IS SUPPORTED BY ONE OF SAID POLE AND SAID SLIDER AND INCLUDES A PLURALITY OF SKIN SECTIONS, EACH OF SAID SKIN SECTION COMPRISING: (1) A PLURALITY OF CHANNESL DISPOSED ONE BESIDE THE OTHER, ADJACENT ONES OF SAID SECTIONS DEFINING GAPS, BRIDGED BY COVER PLATES; (2) A FIRST SET OF ADJUSTABLE POWER TRANSMITTING MEMBERS BRIDGING SAID GAPS IN SAID OUTER FORM-