Structures for folding carriages, chairs, and the like

Abstract From the Canadian patent

A carriage, chair, or similar structure is described having tow cross frames which are interpivotally connected by means of a two-axis pivot joint and which are held in their unfolded position at a fixed angle with respect to each other by rigid brace members pivotally connected to the sides of the frames and characterized in that the said brace members each comprise three sections the, middle sections provide horizontal rests for arms. The carriage chair, or similar structure also incorporates a tow piece rear toggle bar and three piece knuckle strut disposed in front to serve both as a support member for the carriage structure and as a rest or ??port member for the object, e.g. a …