Demountable top frame for mobile stages - has vertical supports attached to stage pedestals and curtain carriers movable through rope winches

摘要

The demountable top frame is for mobile stages with vertical supports to be attached to the stage pedestal for curtain carriers. One or more curtain carriers(3, 5, 6) can be moved up or down by hand or machine driven rope winches. The ropes of which run over rope rollers fitted to the upper ends of the vertical supports(2, 4). The vertical supports and the curtain carriers consists of profiled sections with grooves which open outwards for wing nut screws which can be fitted together in any crossover position using an angle piece which carries the wing-nut screws.