Powered combination elevating ladder and crane hoist

Claim 1

A COMBINATION ELEVATING LOAD ARM AND CRANE HOIST COMPRISING: (A) A VERTICAL STANDARD HAVING A LOWER SECTION AND AN UPPER SECTION VERTICALLY MOVABLE WITH RESPECT TO SAID LOWER SECTION, (B) POWER MEANS FOR ELEVATING SAID UPPER STANDARD SECTION WITH RESPECT TO SAID LOWER SECTION, (C) MEANS FOR RIGIDLY SUPPORTING SAID LOWER STANDARD SECTION, (D) A BOOM CARRIER PIVOTED TO THE UPPER END OF SAID UPPER STANDARD SECTION ON A HORIZONTAL AXIS, (E) AN ELONGATED BOOM MOUNTED IN SAID CARRIER TRANSVERSELY TO THE PIVOTAL AXIS THEREOF AND BEING LONGITUDINALLY ADJUSTABLE THEREIN WHEREBY EITHER END THEREOF MAY BE EXTENDED TO A GREATER DISTANCE FROM SAID STANDARD THAN THE OTHER END THEREOF, (F) LINKS, EACH PIVOTED AT ONE END TO SAID LOWER STANDARD SECTION, (G) MEANS FOR PIVOTING THE OPPOSITE ENDS OF SAID LINKS TO SAID BOOM CARRIER SELECTIVELY AT EITHER OF A PAIR OF POINTS SPACED APART OPPOSITELY FROM THE PIVOTAL AXIS OF SAID CARRIER IN A DIRECTION PARALLEL TO SAID BOOM, WHEREBY ELEVATION OF SAID UPPER STANDARD SECTION WILL CAUSE ELEVATION OF ONE OR THE OTHER END OF SAID BOOM, DEPENDING ON TH EPOINT OF CONNECTION OF SAID LINKS TO SAID CARRIER, (HE A HOIST DEVICE MOUNTED AT ONE END OF SAID BOOM, (I) A LOAD ARM SUPPORT MOUNTED AT THE OPPOSITE END OF SAID BOOM, AND (J) AN ELONGATED LOAD ARM ATTACHED AT ONE END TO SAID BOOM CARRIER AND SUPPORTED BY SAID LOAD ARM SUPPORT AT A POINT SPACED APART FROM SAID BOOM CARRIER, SAID LOAD ARM EXTENDING FROM SAID BOOM CARRIER A DISTANCE GREATER THAN THE MAXIMUM SPACING OF SAID LOAD ARM SUPPORT FROM SAID BOOM CARRIER.