| 摘要 |
<p>There is disclosed a device for retaining a stack of hole-punched papers in a file, e.g. an arch lever mechanism for an arch lever file. The device comprises: a base (10); at least two rings (14) secured to and extending upwardly from the base for engaging the marginal holes in the papers, each ring being composed of a moveable first section (18) and a second section (16), the rings being arranged to engage holes in the margin of the papers; a mechanism for keeping the fist and second sections (16, 18) of each ring (14) in either a closed position (as shown) in which the first and second sections of each ring are spaced apart form each other to allow papers to be added to, or removed from, the rings. The mechanism includes a lever (42) having a handle end (45) and an operating end (47), the operating end engaging the rest of the mechanism for moving the first and second sections of each ring between the open and the closed positions. The surface of the handle end of the lever is formed of a material that is softer than metal, preferably a plastic material.</p> |
