(57) In a clamping device comprising a base carrying two jaws (101, 104), one moveable
relative to the other, at least one of the jaws is provided with two claws (109) for
clamping work against the other jaw. the claws being rotatable about a vertical axis
and transversely adjustable towards or away from each other along the length of the
jaw. Each claw (109) may slide in a transverse slot (115) along the jaw, the slot
being provided along the edge furthest away from the other jaw with at least two concave
recesses (117) in which the claw can be positioned in the clamping operation. Both
jaws (101, 104) may be so provided with claws (109) or, alternatively, one jaw may
be of stepped section. Both jaws are preferÂably of hollow section.
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