Folding personnel lift

Claim 1

A FOLDING BOOM ASSEMBLY, COMPRISING A ROTATABLE SUPPORT, A LOWER BOOM MOUNTED PIVOTALLY AT ITS INNER END ON THE SUPPORT, AN UPPER BOOM, EACH BOOM BEING CONSTRUCTED OF PRESSED METAL AND BENT TO FORM SPACED SIDES AND IN INTERCONNECTING SECTION JOINED TO THE SIDES ALONG ONE EDGE OF THE LATTER, THE OPPOSITE EDGES OF THE SIDES BEING BENT INWARDLY AND THENCE TOWARD THE INTERCONNECTING SECTION TO PROVIDE LATERALLY SPACED REINFORCING CHANNELS, A REINFORCING NACELLE MOUNTED WITHIN THE INNER END OF THE UPPER BOOM AND INTEGRAL THEREWITH, FIRST AND SECOND PIVOT MEANS ON THE NACELLE, THE FIRST PIVOT MEANS INTERCONNECTING THE NACELLE AND THE OUTER END OF THE LOWER BOOM, REINFORCING BRACKET MEANS MOUNTED WITHIN THE LOWER BOOM INTERMEDIATE THE ENDS OF THE LATTER, A PAIR OF PIVOT MEANS ON THE BRACKET MEANS PROJECTING OUTWARDLY THROUGH THE LOWER BOOM IN OPPOSITE DIRECTIONS, FIRST EXTENSIBLE POWER MEANS PIVOTALLY INTERCONNECTING THE SUPPORT AND ONE OF THE PROJECTING PIVOT MEANS, SECOND EXTENSIBLE POWER MEANS PIVOTALLY INTERCONNECTING THE OTHER PROJECTING PIVOT MEANS AND THE SECOND PIVOT MEANS ON THE NACELLE, A TRANSVERSE SHAFT ON THE OUTER END OF THE UPPER BOOM, A PERSONNEL STATION MOUNTED PIVOTALLY ON THE SHAFT AND COMPRISING A LONGITUDINAL EXTENSION OF THE UPPER BOOM, FIRST PULLEY MEANS ROTATABLY MOUNTED ON THE SHAFT, MEANS SECURING THE PERSONNEL STATION TO THE FIRST PULLEY MEANS FOR ROTATION THEREWITH, SECOND PULLEY MEANS MOUNTED AT THE PIVOT BETWEEN THE LOWER AND UPPER BOOMS, THIRD PULLEY MEANS SECURED TO THE SUPPORT, AND CABLE MEANS REAVED OVER SAID PULLEY MEANS AND OPERATIVELY CONNECTED TO THE SUPPORT, WHEREBY TO MAINTAIN THE STATION LEVEL AUTOMATICALLY DURING PIVOTING OF THE BOOMS.