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US Patent: 589,228
Wrench
Patentees:
John N. Stephens (exact or similar names) - Crystal Falls, MI
Samuel Prudhomme (exact or similar names) - Crystal Falls, MI

USPTO Classifications:
81/134

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edwin L. Bradford
A. E. Dieterich
John E. McGillis
J. F. Corcoran

Patent Dates:
Applied: Dec. 17, 1896
Granted: Aug. 31, 1897

Patent Pictures:
John N. Stephens and Samuel Prudhomme patent August 31, 1897
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Description:
The sliding jaw works in a central slot in the main shank. Adjustment is set by teeth on the pivoted lever handle that engage teeth on the handle. A spring clip that engages a catch in the pivoted lever handle holds the adustment.

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