Spring clamp for paper logs
OwnerFerdinand W. Szaboinventor
Life of this patent
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Abstract
A spring clamp for holding a paper log (rolled up newspapers) while twisting tie wires around the end portions thereof. The clamp comprises a pair of spring-actuated curved jaws which have a laterally flexible cord across the free ends of the jaws to embrace the log, the cord extending through jaw openings and being connected to the ends of springs projecting laterally from the jaws. The springs are arranged to buckle when the jaws are separated to provide a large range of opening movement of the jaws by a substantially constant jaw opening force and a substantially constant tension on the cord.
Claims2
A spring clamp for holding a log made of rolled-up newspapers from unrolling during installation of ties around the end portions of the log, comprising a pair of curved jaws hinged together at one end for movement toward and away from each other, said jaws having handles which diverge from said one end thereof and which are adapted to be squeezed together to move said jaws away from each other;
- and spring means acting on the spaced apart free ends of said jaws for yieldable movement of said jaws as aforesaid into and out of engagement with a log therebetween;
- said spring means comprising laterally extending elongated slender springs which at one end bear on said free ends, and a flexible cord secured to the other end of said springs and extending through openings in said free ends and across the space therebetween to embrace the portion of the log between said free ends;
- said springs buckling to longitudinally curved form upon movement of said jaws away from each other thus to yieldably actuate said jaws to grip a log with approximately constant force despite wide variation of log diameter.
Dependencies are inferred from the claim text.