| 摘要 |
A worktable clamping apparatus wherein an adjustable clamping jaw is operable between an adjustable mode (allowing both forward and backward movement on a supporting frame and a clamping mode whereby a work piece is clamped by opposing jaws. The clamping mode is selectively effected by actuation of a clamping assembly which prevents backward movement of the adjustable clamping jaw away from the work piece to be clamped. The clamping mode is not effected automatically but is selectively effected by the user. The time taken to clamp a work piece is significantly reduced as compared to conventional clamping apparatus. In a further aspect of the invention, the clamping apparatus can be collapsed into a partially deployed state to allow the "A" frame structure to be used for alternative purposes.
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