Support apparatus for use on an inclined roof

A support apparatus for supporting workers and materials on an inclined surface comprising:

• at least one ladder having at least two rails and further having hollow rungs defining openings of a predetermined dimension in said rails whereby an unobstructed continuous first passage is formed through said openings and said rungs;
• and
• a support frame operably attached to said at least one ladder, further comprising
• at least two vertical legs, each at least two vertical legs having a first end and a second end, said first end defining a second passage approximating said predetermined dimension of said openings and configured for concentric alignment with said openings, and said second end defining a third passage approximating said predetermined dimension of said openings and configured for concentric alignment with said openings,
• a cross brace assembly further comprising at least one cross brace, said cross brace further comprising a pair of slidable members affixed to one another by an elongated rigid member, each said slidable member defining a channel matingly adapted to one of said vertical legs for slidable travel of said leg within said channel,
• at least one elongated securing member adapted to closely pass through said first passage and selectively pass through said second or third passage of each of said vertical legs, and
• at least two horizontal members, each said horizontal member having a proximate end and a distal end, said distal end defining a fourth passage approximating said predetermined dimension of said openings and configured for concentric alignment with said openings, and said proximate end defining a fifth passage through which said elongated rigid member passes to rotatably join said proximate end to said cross brace assembly;
• whereby a tiltable horizontal platform is supported by said horizontal members, each of said horizontal members is capable of being rotated at least 180 degrees about said cross brace assembly supporting said horizontal members, each of said vertical legs supporting said cross brace assembly is capable of being selectively and individually vertically adjusted to an inclined surface, and said support frame is secured to said ladder by said at least one elongated securing member.