Hinkle pipe wrenches and carpet stretchers show up occasionally but little information is available. There is a patent for a soap mill number 786,125. There are 2 Hinkle carpet stretchers with one being a Leonard Hinkle of Indianapolis, Indiana number 456,001 and the other Columbus, Ohio without record. There is a notice in 1906 that Jessie Hinkle is building a factory at Buttles and Michigan Avenue in Columbus, Ohio to manufacture carpet stretchers. The address matches up with the 1909 wrench advertisement.
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