Roof safety barrier supporting frame

In combination with a building having a roof defining a roof edge, a device for erecting a vertically extending upright safety barrier upon said roof, said device comprising:

• (a) an elongate base secured to the surface of said roof substantially along the length of said elongate base and positioned substantially perpendicular to said roof edge, said base having a first end and a second end, said base arranged upon said roof so that said first end is positioned closer to said roof edge than said second end;
• (b) a substantially vertical, upright stanchion pivotally connected to said second end of said base, said stanchion including variable extension means for selectively varying the height of said upright stanchion and selectively lockable adjustment means for locking said stanchion in a desired extended position;
• (c) an elongate diagonal brace having a top end and a bottom end, said bottom end pivotally connected to said first end of said base and said top end pivotally connected to an upper portion of said upright stanchion;
• (d) said upright stanchion including an upper elongate member and a lower elongate member adapted to telescopically engage each other to form said variable extension means, said upper elongate member having two ends, either end being alternatively telescopically engagable with said lower elongate member of said upright stanchion;
• and
• (e) further including a pivot joint interconnecting said top end of said brace and said upper elongate member, said joint including means for enabling said brace and upper elongate member to pivot relative to each other about at least two mutually perpendicular axes of rotation which are both oriented transversely to the length of said upper elongate member so as to permit said upper elongate member to be inverted with respect to said lower elongate member while attached to said brace.