US Patent 9556624 Scaffold system

A scaffold system for supporting workers includes a plurality of end frames including a pair of uprights joined by an overhead cross bar for supporting planks thereon. The end frames are stacked top-to-bottom to form end frame columns and are laterally secured together to form an exterior framework. The scaffold system also includes interior posts coupled vertically end-to-end so as to form interior columns, with pairs of interior columns being secured to each end frame column between the vertical uprights of the end frames. Side rails are mounted to the interior posts extending between the pairs of interior posts. Planks are supported on the overhead cross bars, extending between adjacent end frames, and are bounded at their ends by the pairs of interior posts to form a work space and/or walkway for workers of a reduced size or area.