| 摘要 |
A clamp for attachment to a sheet of material (1) comprises a first member (3) disposed, in use, principally on the rear of the sheet (1) and a second member (4) disposed on the front of the sheet (1). The first member (3) has a row of ramped projections (5) extending over the front of the sheet (1), and the second member (4) has a row of recesses (7) with ramped portions (7a) therein. The second member (4) is placed over the projections (5) and then slid in the direction of the sheet edge so that the ramped portions (7a) engage with ramped surfaces (6) of projections (5) thereby clamping the sheet (1) between the projections (7a) and the first member (3). |
