US Patent: 609,146


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US Patent: 609,146

Wrench

Patentee:

Hubert C. Hart (exact or similar names) - Unionville, CT

USPTO Classifications:

81/176

Tool Categories:

wrenches : bicycle or pocket wrenches

wrenches : wrench components : wrench jaw components

Assignees:

None

Manufacturer:

Upson and Hart - Unionville, CT

Witnesses:

Patent Dates:
Applied:	Dec. 22, 1897
Granted:	Aug. 16, 1898

Patent Pictures: [ 1 | 2 ]

Hubert C. Hart patent August 16, 1898

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Description:

Adjustable jaw formed from a symmetrical stamping, including extended "pegs" that form the shaft for the adjusting nut. Corresponding German "Gebrauchsmuster" registration D.R.G.M. Nr. DG-96717 dated May 25, 1898.

Known example marked AETNA PAT. AUG. 16, 98.

According to Ken Cope's "American Wrench Makers 1830-1930," Upson and Hart of Unionville, CT produced this wrench.