Improvements relating to collapsible sliding gates, doors, shutters and the like

摘要

667,461. Doors. POTTER, RAX, Ltd., and COLEMAN, F. G. June 5, 1950. No. 13998/50. Class 20(iii). In a collapsable door of the type wherein overlapping panels 8 are secured adjacent one vertical edge to pickets 1, the other or free vertical edge of each panel has an upward extension 13 carrying a roller 14 running on a track 15 integral with or secured to the track 4 on which the rollers 3 of the pickets run.