| http://www.w3.org/ns/prov#value | - In tools of the above described type, the retaining pin, referred to, is often accidentally sheared off by stresses placed thereon in service; and this invention is directed particularly to means for preventing this accidental shearing of the retaining pin when stresses applied to the tool tend to move the shiftable jaw element beyond the extreme limit permitted by engagement of one end of the slo
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