摘要 |
A portable folding standard for supporting a sign has an A-frame pivoted at the top so that the legs can be collapsed into a folded position, bracing links pivoted to the A-frame which can be locked when the frame is in open position and folded alongside the frame when the frame is in closed position, a swinging frame pivoted to the top of the A-frame, balancing springs connected between the swinging frame and the A-frame, and a vertical mast, adaptable for elevation, carried on the swinging frame. The frame and mast are provided with means for exhibiting a sign when the standard is in open position and for storing the sign when the standard is in folded or closed position.
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