| 摘要 |
<p>A lever arch mechanism comprises a pair of binder rings (R) selectively movable between an open and a closed position to retain hole punched sheets of paper and the like and a lever mounting plate (P) to which respective ends of the binder rings are mounted. A lever (L) mounted on the plate is operatively connected to the binder rings for movement of the lever in an appropriate direction to open and close the rings. A side plate (S,52,62) is adapted to receive the lever mounting plate and hold it in place. Groups of spurs (14,54,64) depend from the side plate for securely attaching the side plate to a binder (C) for the lever arch mechanism to be securely fastened to the binder and not readily dislodged therefrom. Various spur patterns and spur configurations are described.</p> |
