| 摘要 |
The housing (16) of the mechanism (3) contains bearings and guide members (13). They are held by a spring (26) in guides (7,12). The housing is movable at right angles to the table (1). Rollers, or alternatively a supporting arm, can form the bearings and members, and the spring can be of the leaf type, supporting a roller running against a fixed supporting surface (8) on the frame. The guides can consist of grooves formed in cross-members (4,6) on the table. The cross-members can form a one-piece housing in conjunction with sidewalls. |
