| 摘要 |
Several different types of spring-loaded holders. The first type is a cam-based holder which can activate a cam action for holding a stack of art sheets. The second type is a toggle holder which can be toggled between a closed position for holding a stack of art sheets and an open position for loading and unloading said art sheets. Such holders can be installed in a picture frame for holding a stack of art sheets of varied thicknesses. These holders can be further modified and used in a variety of holding boards including fun boards, bulletin boards and poster boards. A one-piece injection molded stretcher with grid will increase the strength of the stretcher and allow thinner stretcher to be used. It is proposed that a framed art ensemble be sold in a retail store. Each ensemble comprises a frame with the present holders and a plurality of matching art sheets of standard sizes.
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