Here we have a Vintage, Pat. 1920, LAWSON 10" Offset Pipe Wrench Made by U.S. HAME CO. Buffalo N.Y.  Gottfried C. Lawson of Cleveland, OH was awarded Pat. No. 1,362,014 on Dec. 14, 1920 for his invention of this offset pipe wrench. DATAMP indicates that there were 3 manufactures of this wrench with U. S. HAME ( USHCO) being one of these. This wrench is fully identified as you can see from my pics. The wrench is in Very good 'used tool' fully working condition with minor surface wear from use (see pics). Both jaws have very good teeth with a small chip off one of these teeth.  It would make a nice addition to your collection or put it to use !!