Vintage Cincinnati Tools Co. C-Clamp (Hargrave) @DirtandRust

Vintage Possibly Antique Cincinnati Tool Co. C-Clamp
4 inch Standard Clamp
No. 540
Tested
Winged Screw Handle
Cincinnati Tool Co.
Made in USA
Arma Steel
Circle H Hargrave Logo Marking

A "circled H" on tools made by Cincinnati Tool Company signifies that it was “designed“ by John M. Hargrave

The Cincinnati Tool Company was founded in 1877.   In 1924, changed to the Hargrave Company.   So this clamp "should" be pre-1924.

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