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US Patent: 596,777
Nut Wrench
Patentee:
Aaron Hopkins - Lake City, IA

USPTO Classifications:
81/137

Tool Categories:
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. S. Van Loan
Ann Payton
A. O. Wick
S. Cretzler

Patent Dates:
Applied: Mar. 20, 1897
Granted: Jan. 04, 1898

Patent Pictures:
Aaron Hopkins patent January 4, 1898
USPTO pdf tiff
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Description:
Quick adjust with an adjusting sleeve having internal teeth that engage rack teeth on the main shank. A spring catch on the side of the shank holds the adjustment against accidental movement.

John Hedderhorn - patent attorney

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