| 摘要 |
PCT No. PCT/GB88/00169 Sec. 371 Date Dec. 14, 1988 Sec. 102(e) Date Dec. 14, 1988 PCT Filed Mar. 7, 1988 PCT Pub. No. WO88/06502 PCT Pub. Date Sep. 7, 1988.A file holder 10 allows a blade 12 to be attached to a base 20, such as by grub screws. At one end of the base 20 there is a handle 16 rotatably mounted on the base 20 and incorporating a cam surface. A tension bar 18 extends between the handle 16 and the other end of the base 20. The tension bar 18 incorporates a cam follower which bears on the cam surface in the handle 16 so that as the handle 16 is rotated, the separation of the two points is cuased to vary, so that base 20 and the blade 12 flex to a degree which depends on the position of the handle 16 in relation to the base 20. |
