Barbara IV loom designed and patented in 1979 by Thought Products. Countermarch loom with at least 10 treadles and numerous shafts. The overall shape is of an acute isosceles triangle with the vertex at the top. The breast beam and warp beam are on opposite ends of a hinged crossbeam that is set in a “V.” The rear support legs become the castle supports, and the beater bar is suspended from its own set of supports.
