| 摘要 |
A cylindrical body houses a shaft and is movable with respect thereto. The body carries a first jaw element at one end thereof. A second jaw element is joined to fixed support means connected to the shaft within the body. A compression spring surrounds a portion of the shaft projecting from the opposite end of the body, and the spring urges the jaw elements into clamping relationship. The clamp is opened by moving the body in opposition to the force of the spring.
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