| 摘要 |
A mechanism is described for incorporating into a clamping workbench of the type comprising a pair of main clamping jaws (234, 237) and a supplementary clamping jaw (230) which is movable as a consequence of relative movement of the main jaws to engage and clamp a workpiece lying across the main jaws. The clamping movement of the supplementary jaw (230) is generally perpendicular to that of the main jaws. The invention concerns a supplementary jaw (230) having a single actuating arm (238), one end of which is adapted to be pivotally received in an opening (246) in one of the main jaws (237), and the other end of which is slidably connected to the supplementary jaw (230) and held captive therein by pin means (304, 306) extending above and below the captive end of the arm (238). Typically the pins (304, 306) engage in two aligned slots (300, 302) in the supplementary jaw (230) and the inboard end of the actuating arm is pivotally securable in one of at least two spaced apart points along the length of the two aligned slots (236, 242) to permit the supplementary clamping jaw (230) to be adjusted in position to accommodate different workpiece widths. The aligned slots (236, 242) can extend generally parallel or perpendicular to the workpiece engaging face of the supplementary clamping jaw (230).
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