| 摘要 |
In a gripping means comprising a gripping jaw, or a pair of gripping jaws, mounted in a slot in a support means, said slot having an open mouth into which an object to be gripped can be entered for engagement by the gripping jaw or jaws and opposed plane walls converging towards said open mouth, the or each gripping jaw has an inwardly facing surface comprising inner and outer portions inclined to one another at an obtuse angle and an outwardly facing surface comprising inner and outer portions also inclined to one another at an obtuse angle such that the gripping jaw has the inner portion of its inwardly facing surface inclined to the outer portion of its outwardly facing surface at an angle B which is smaller than the angle C between the outer portion of its inwardly facing surface and the inner portion of its outwardly facing surface and spring means is provided normally urging the outer portion of the inwardly facing surface of the or each gripping jaw in a direction towards the object to be gripped.
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