Frame for folding chair comprises crossing U-shaped frames and circular sub-frame attached to tops of these by bolts fitting into bores which have lower end forming pivot with plug which fits into each leg

摘要

The frame for a folding chair comprises two U-shaped frames (1, 2) which cross and are connected by pivots (15). A circular sub-frame (3) is attached to the tops of these by connectors made up of a bolt (6) with a threaded end which fits into a bore in the sub-frame and a lower end which forms a pivot with a plug (51, 71) which fits into the top of each leg of the U-shaped frame.