Stoval Mfg. Quick Grip wrench

thanks, Ski!

This is an interesting idea for multiplying clamping force in a wrench/pair of pliers. I expect it didn't catch on, I've never seen them before. Stovall / Stovall Mfg. Co., Pt. Angeles, WA

 "Quick Grip" wrench / patent 1361923 granted to William M. Stovall, Dec 14 1920

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